% Encoding: UTF-8
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@article{faucris.118950304,
author = {Will, Thomas M. and Schmädicke, Esther},
doi = {10.1016/S0024-4937(01)00059-7},
faupublication = {no},
journal = {Lithos},
note = {UnivIS-Import:2017-03-24:Pub.2001.nat.dgeo.IGM.profes{\_}1.afirst},
pages = {109-125},
peerreviewed = {Yes},
title = {{A} first find of retrogressed eclogites in the {Odenwald} {Crystalline} {Complex}, {Mid}-{German} {Crystalline} {Rise}, {Germany}: evidence for a so far unrecognised high-pressure metamorphism in the {Central} {Variscides}},
year = {2001}
}
@article{faucris.208999807,
author = {Ling, Xiao-Xiao and Schmädicke, Esther and Li, Qiu-Li and Gose, Jürgen and Wu, Rui-Hua and Wang, Shi-Qi and Liu, Yu and Tang, Guo-Qiang and Li, Xian-Hua},
doi = {10.1016/j.lithos.2015.02.019},
faupublication = {yes},
journal = {Lithos},
keywords = {Titanite; Tremolite; Nephrite; SIMS U-Pb dating; Geochronology},
pages = {289-299},
peerreviewed = {Yes},
title = {{Age} determination of nephrite by in-situ {SIMS} {U}-{Pb} dating syngenetic titanite: {A} case study of the nephrite deposit from {Luanchuan}, {Henan}, {China}},
year = {2015}
}
@article{faucris.208992843,
author = {Schmädicke, Esther and et al.},
author_hint = {Ling X., Schmädicke E., Wu R., Wang S., Gose J.},
doi = {10.1127/0077-7757/2013/0229},
faupublication = {yes},
journal = {Neues Jahrbuch für Mineralogie-Abhandlungen},
keywords = {Asian nephrite deposits; Archaeology; Tremolite; Electron microprobe analysis; White nephrite},
pages = {49-65},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Composition} and distinction of white nephrite from {Asian} deposits},
volume = {190},
year = {2013}
}
@article{faucris.209000435,
author = {Will, Thomas M. and Schmädicke, Esther and Frimmel, Hartwig E.},
doi = {10.1007/s00710-010-0125-7},
faupublication = {yes},
journal = {Mineralogy and Petrology},
pages = {185-200},
peerreviewed = {Yes},
title = {{Deep} solid-state equilibration and deep melting of plagioclase-free spinel peridotite from the slow-spreading {Mid}-{Atlantic} {Ridge}, {ODP} {Leg} 153},
volume = {100},
year = {2010}
}
@book{faucris.118912904,
address = {Leipzig-Stuttgart},
author = {Schmädicke, Esther},
faupublication = {no},
note = {UnivIS-Import:2017-03-24:Pub.1994.nat.dgeo.IGM.legeo.dieekl},
peerreviewed = {unknown},
publisher = {Deutscher Verlag für Grundstoffindustrie},
title = {{Die} {Eklogite} des {Erzgebirges}. {Freiberger} {Forschungsheft} {C} 456.},
year = {1994}
}
@article{faucris.208996438,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Okrusch M., Schmidt W.},
doi = {10.1007/BF00310740},
faupublication = {no},
journal = {Contributions To Mineralogy and Petrology},
pages = {226-241},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Eclogite}-facies rocks in the {Saxonian} {Erzgebirge}, {Germany}: high pressure metamorphism under contrasting {P}-{T} conditions},
volume = {110},
year = {1992}
}
@article{faucris.118851084,
abstract = {The metamorphic sequences of the Saxonian Erzgebirge were thoroughly overprinted by a Variscan medium-pressure event under amphibolite facies conditions. However, eclogitic relics documenting an older high-pressure event are widespread. P-T conditions of the eclogite-facies metamorphism systematically decrease, over a distance of 50 km, from about >29 kbar/850°C, in the central part, to 20-24 kbar/650°C, in the westernmost part of the Erzgebirge crystalline complex. A distinct gap in P-T conditions exists between the central and the western Erzgebirge coinciding with the fault zone of the Flöha syncline. Therefore, the eclogitebearing sequences are assumed to represent at least two different nappe units. The lower-grade eclogite assemblages in the western Erzgebirge display a continuous metamorphic zonation with a gradual decrease of peak metamorphic temperatures towards the west. Assemblages formed in the stability field of coesite and thus indicating a regional ultra-high pressure metamorphism, are restricted to the central Erzgebirge, where they are widespread in the eclogites, but also present in metaacidic country rocks. The same high-temperature/high-pressure conditions, testifying to a burial of at least 100 km, were independently recorded for the ultramafic garnet pyroxenites associated with the eclogites of the central Erzgebirge. Mineral relics included in the eclogite phases and mineral assemblages formed by retrograde reactions permit reconstruction of the prograde and retrograde P-T paths in the different parts of the Erzgebirge crystalline complex. © 1992 Springer-Verlag.},
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke Esther, Okrusch M., Schmidt W.},
doi = {10.1007/BF00310740},
faupublication = {no},
journal = {Contributions To Mineralogy and Petrology},
note = {UnivIS-Import:2017-03-24:Pub.1992.nat.dgeo.IGM.profes{\_}1.eclogi},
pages = {226-241},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Eclogite}-facies rocks in the {Saxonian} {Erzgebirge}, {Germany}: {High} pressure metamorphism under contrasting {P} {T} conditions.},
volume = {110},
year = {1992}
}
@article{faucris.118824464,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmidt W., Schmädicke Esther, Werner C. D.},
faupublication = {no},
journal = {European Journal of Mineralogy},
note = {UnivIS-Import:2017-03-24:Pub.1990.nat.dgeo.IGM.profes{\_}1.eklogi},
pages = {125 169},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Eklogite} des {Erzgebirges}},
volume = {2},
year = {1990}
}
@article{faucris.209001302,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Will T.},
doi = {10.1130/G22170.1},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {Eclogite facies metamorphism; Antarctica; Shackleton Range; Pan-African; Ultramafic rocks},
pages = {133-136},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{First} evidence of eclogite facies metamorphism in the {Shackleton} {Range}, {Antarctica}: {Trace} of a suture between {East} and {West} {Gondwana}?},
volume = {34},
year = {2006}
}
@article{faucris.209001609,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Evans B.},
doi = {10.1007/s004100050265},
faupublication = {no},
journal = {Contributions To Mineralogy and Petrology},
pages = {57-74},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Garnet}-bearing ultramafic rocks from the {Erzgebirge}, and their relation to other settings in the {Bohemian} {Massif}},
volume = {127},
year = {1997}
}
@article{faucris.208993217,
author = {Schmädicke, Esther and Gose, Jürgen and Reinhardt, Juergen and Will, Thomas M. and Stalder, Roland},
doi = {10.1016/j.precamres.2015.09.019},
faupublication = {yes},
journal = {Precambrian Research},
keywords = {Rehoboth terrane; Water in garnet; Eclogite; Alkremite; Pyroxenite; Kaapvaal Craton},
pages = {285-299},
peerreviewed = {Yes},
title = {{Garnet} in cratonic and non-cratonic mantle and lower crustal xenoliths from southern {Africa}: {Composition}, water incorporation and geodynamic constraints},
volume = {270},
year = {2015}
}
@article{faucris.209002264,
author = {Schmädicke, Esther and Okrusch, M. and Rupprecht-Gutowski, P. and Will, T. M.},
doi = {10.1016/j.precamres.2011.07.010},
faupublication = {yes},
journal = {Precambrian Research},
keywords = {Alkremite; Garnet pyroxenite; Eclogite; Gibeon kimberlite; Geothermobarometry; Mantle xenolith},
pages = {1-17},
peerreviewed = {Yes},
title = {{Garnet} pyroxenite, eclogite and alkremite xenoliths from the off-craton {Gibeon} {Kimberlite} {Field}, {Namibia}: {A} window into the upper mantle of the {Rehoboth} {Terrane}},
volume = {191},
year = {2011}
}
@article{faucris.209002638,
author = {Schmädicke, Esther and Will, Thomas M. and Mezger, Klaus},
doi = {10.1016/j.lithos.2015.09.016},
faupublication = {yes},
journal = {Lithos},
keywords = {Eclogite-facies garnet pyroxenite; Antarctica; Plume magmatism; Picrite; Shackleton range; Rodinia breakup},
pages = {185-206},
peerreviewed = {Yes},
title = {{Garnet} pyroxenite from the {Shackleton} {Range}, {Antarctica}: {Intrusion} of plume-derived picritic melts in the continental lithosphere during {Rodinia} breakup?},
volume = {238},
year = {2015}
}
@article{faucris.208993617,
author = {Will, T. M. and Frimmel, H. E. and Zeh, A. and Le Roux, Petrus and Schmädicke, Esther},
doi = {10.1016/j.precamres.2010.03.005},
faupublication = {yes},
journal = {Precambrian Research},
keywords = {Zircon single grain Lu-Hf isotopes; East Antarctica; Crustal evolution and sutures; Shackleton Range; Lithogeochemistry; Whole rock Rb-Sr; Sm-Nd and Pb-Pb isotopes},
pages = {85-112},
peerreviewed = {Yes},
title = {{Geochemical} and isotopic constraints on the tectonic and crustal evolution of the {Shackleton} {Range}, {East} {Antarctica}, and correlation with other {Gondwana} crustal segments},
volume = {180},
year = {2010}
}
@article{faucris.265060792,
abstract = {New zircon U-Pb-Hf-O isotope, whole rock geochemical and Sr-Nd-Pb isotope geochemical data of Variscan felsic to intermediate rocks from the Odenwald-Spessart basement, Mid-German Crystalline Zone, Germany are presented. Peraluminous, high-K calc-alkaline S-type granite in the eastern Odenwald basement (Group 1 rocks) formed by partial melting of the lower crust at c. 425 Ma. Their high-K calc-alkaline composition indicates the presence of sedimentary and/or metasomatized lithospheric mantle material during formation of the melts. The protolithic melts of metaluminous, medium-to high-K calc-alkaline I-type granodiorite and diorite of the Spessart and western Odenwald basement as well as the Neustadt (Odenwald) outlier (Group 2 rocks) formed by partial melting of the upper mantle at c. 340 Ma. The melt source was enriched through previously subducted Mesoproterozoic sedimentary material. Eastern Odenwald basement leucocratic gneiss have zircon with ages ranging from 2803 Ma to 336 Ma and main age peaks between 620 and 570 Ma and 360 and 330 Ma. The presence of numerous >1800 Ma old zircon and a prominent age gap between 1800 and 1000 Ma imply a Gondwanan zircon source and indicate the presence of Cadomian material in the Odenwald-Spessart basement. Group 2 diorite is exposed over a distance of at least 60 km from the easternmost Spessart to the westernmost Odenwald and is expected to underlie the eastern Odenwald basement. We suggest that Group 2 diorite formation was related to the presence of a mantle plume, which was also responsible for the widespread Carboniferous magmatism and the associated high-temperature metamorphism in the Odenwald-Spessart basement and other areas of the Variscan orogen.},
author = {Will, Thomas M. and Schmädicke, Esther and Ling, Xiao-Xiao and Li, Xian-Hua and Li, Qiu-Li},
doi = {10.1016/j.lithos.2021.106454},
faupublication = {yes},
journal = {Lithos},
note = {CRIS-Team WoS Importer:2021-10-15},
peerreviewed = {Yes},
title = {{Geochronology}, geochemistry and tectonic implications of {Variscan} granitic and dioritic rocks from the {Odenwald}-{Spessart} basement, {Germany}},
volume = {404-405},
year = {2021}
}
@article{faucris.267491628,
abstract = {Major and trace elements in omphacite, including hydrogen, were determined in eclogites from two Variscan basement complexes in Germany: Erzgebirge (EG) and Fichtelgebirge (FG). Erzgebirge eclogite is derived from three units, showing different peak pressure (P) and temperature (T) conditions (Unit 1: 840-920 degrees C/>= 30 kbar, Unit 2: 670-730 degrees C/24-26 kbar, Unit 3: 600-650 degrees C/20-22 kbar). The peak conditions of FG eclogite (690-750 degrees C/25-28 kbar) resemble those of EG Unit 2. Coesite eclogite occurs in EG Unit 1, and quartz eclogite in all other units. Omphacite from all samples shows four infrared (IR) absorption bands. Two prominent, sharp bands occur at 3,455 +/- 10 cm(-1) (band II) and 3,522 +/- 10 cm(-1) (band III). Band II is usually more prominent than band III, except for few samples with low jadeite content. A further, broad band is centred between 3,270 and 3,370 cm(-1) (band I) and a fourth, minor band at 3,611-3,635 cm(-1) (band IV). Bands II and III are due to hydrogen bound as structural OH- ions in omphacite. In most cases, this also applies to band IV. However, some spectra with extremely large type IV bands reflect phengite inclusions. The ambiguous band I may be due to different H2O species (molecular water, structural OH, and water in phengite). Omphacite of quartz eclogite has lower contents of TiO2, Zr, Hf, and REE, compared with that from coesite eclogite. By contrast, omphacite in quartz eclogite from both EG (H2O sample averages: 465-852 ppm) and FG (546-1,089 ppm) contains the same amount of structural OH (concentrations given in wt.-ppm H2O) as omphacite in coesite eclogite (492-1,140 ppm). The obtained difference in the garnet-omphacite H2O partition coefficient between quartz (0.01-0.03) and coesite eclogite (0.08-0.11) results from different H2O contents in garnet (coesite eclogite: 50-150 ppm; quartz eclogite: <2-50 ppm; Gose & Schmadicke, 2018). The total content of structural OH in omphacite is unrelated to its major and trace element composition. However, treating the individual IR bands separately, a relation between OH and mineral composition is observed. The OH amount defined by band II is positively correlated to Ti and tetrahedral Al, and that of band III shows a positive correlation with Ca and a negative one with Na (and jadeite). Both the total OH content of omphacite and the partial contents deduced from individual IR bands are unrelated to PT conditions. This implies that omphacite incorporated its structural H2O mainly in the quartz stability field, presumably during initial omphacite growth. Conversely, most OH in garnet was derived from the final breakdown of the last remaining calcic amphibole close to or within the coesite stability field. Our data suggest that coesite eclogite is able to transport a significant amount of H2O (average 550 ppm, maximum 730 ppm), corresponding to that in 3-4 vol.% calcic amphibole, via subduction to depths beyond 100 km. However, the majority of water liberated by dehydration reactions during subduction, including the breakdown of 5-10 vol.% eclogite facies and >10 vol.% pre-eclogitic hydrous minerals, is not preserved in eclogite but liberated to the mantle wedge.},
author = {Gose, Jürgen and Schmädicke, Esther},
doi = {10.1111/jmg.12642},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
note = {CRIS-Team WoS Importer:2021-12-24},
peerreviewed = {Yes},
title = {{H2O} in omphacite of quartz and coesite eclogite from {Erzgebirge} and {Fichtelgebirge}, {Germany}},
year = {2021}
}
@article{faucris.209003318,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Gose J., Will T.},
doi = {10.1016/j.lithos.2011.02.014},
faupublication = {yes},
journal = {Lithos},
keywords = {Infrared spectroscopy; Geothermobarometry; Nominally anhydrous minerals; Mid-Atlantic Ridge; Spinel peridotite; Orthopyroxene},
pages = {308-320},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Heterogeneous} mantle underneath the {North} {Atlantic}: {Evidence} from water in orthopyroxene, mineral composition and equilibrium conditions of spinel peridotite from different locations at the {Mid}-{Atlantic} {Ridge}},
volume = {125},
year = {2011}
}
@article{faucris.208997265,
author = {Schmädicke, Esther and et al.},
author_hint = {Klemd R., Schmadicke E.},
faupublication = {no},
journal = {Chemie Der Erde-Geochemistry},
pages = {241-261},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{High}-pressure metamorphism in the {Munchberg} {Gneiss} {Complex} and the {Erzgebirge} {Crystalline} {Complex}: the influence of fluid and reaction kinetics},
url = {https://www.scopus.com/record/display.uri?eid=2-s2.0-0028592347&origin=inward},
volume = {54},
year = {1994}
}
@article{faucris.209004001,
author = {Schmädicke, Esther and et al.},
author_hint = {Müller W., Schmädicke E., Okrusch M., Schüssler U.},
doi = {10.1127/0935-1221/2003/0015-0295},
faupublication = {yes},
journal = {European Journal of Mineralogy},
keywords = {Anthophyllite; Amphibole-chlorite-talc intergrowths; Chain arrangement faults; Ca-amphibole; Cummingtonite; Chain multiplicity faults; Orientation relationships; Gedrite exsolutions; TEM},
pages = {295-307},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Intergrowths} between anthophyllite, gedrite, calcic amphibole, cummingtonite, talc and chlorite in a metamorphosed ultramafic rock of the {KTB} pilot hole, {Bavaria}},
volume = {15},
year = {2003}
}
@article{faucris.208993990,
author = {Schmädicke, Esther and et al.},
author_hint = {Will T., Schmädicke E.},
doi = {10.1046/j.1525-1314.2003.00453.x},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {KFMASH pseudosections; Anti-clockwise P-T paths; Mid-German Crystalline Rise; Low-P/high-T metamorphism; Variscides},
pages = {469-480},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Isobaric} cooling and anti-clockwise {P}-{T} paths in the {Variscan} {Odenwald} {Crystalline} {Complex}, {Germany}},
volume = {21},
year = {2003}
}
@article{faucris.229928086,
abstract = {Data on water in nominally anhydrous minerals (NAMs) of orogenic garnet-bearing ultramafic rocks (GBU) are extremely rare. In this study, garnet of peridotite and pyroxenite from Erzgebirge (EG), Germany, and two peridotite samples from Alpe Arami (AA), Switzerland, were analyzed by infrared (IR) spectroscopy. Garnet from EG peridotite and pyroxenite yielded IR absorption bands at 3650 +/- 10 cm(-1) (type I) and in the wavenumber range of 3570-3630 cm(-1 )(type II) that are ascribed to structural hydroxyl (colloquially "water"). Additional broad band's centered at <3460 cm(-1), present in about half of the samples, are related to molecular water (MW). The content of structural H2O defined by band types I + II is low (3-68 ppm) in all EG samples. Structural water is negatively correlated to Mg and Ti and positively to Y and HREE in EG garnet. Including molecular water, a pronounced positive correlation between H2O and Li is observed. Because the intensity of the type II band is enhanced in domains with molecular water, the primary, peak metamorphic H2O content in EG garnet was probably as low as 0-11 ppm. Equally low contents of structural water are present in AA garnet (10-13 ppm) in which molecular water is negligible. Such concentrations are distinctly lower than the water storage capacity of garnet at the relevant pressure. Water loss upon decompression cannot serve as an explanation for the low contents because, on the contrary, post-peak-metamorphic influx of H2O led garnet to take up secondary structural water. Hence, the results are interpreted as an indication of severe water deficiency at peak metamorphism. Notably, the obtained data agree with the H2O content of 6 ppm reported in garnet from Cima di Gagnone peridotite, which originated as abyssal peridotite. It remains unknown if these low contents are typical for an abyssal, low-pressure protolith but, if the rocks were part of the lowermost, most hydrated portion of the mantle wedge, they are expected to contain much more water. Given that garnet in basaltic coesite eclogite from the Erzgebirge is equally water-deficient as the GBU samples from the same unit, it is at least a possibility that both rock types share a low-pressure origin in an oceanic setting.},
author = {Schmädicke, Esther and Gose, Jürgen},
doi = {10.1127/ejm/2019/0031-2880},
faupublication = {yes},
journal = {European Journal of Mineralogy},
note = {CRIS-Team WoS Importer:2019-11-29},
pages = {715-730},
peerreviewed = {Yes},
title = {{Low} water contents in garnet of orogenic peridotite: clues for an abyssal or mantle-wedge origin?},
volume = {31},
year = {2019}
}
@article{faucris.209004670,
author = {Will, T. M. and Schmädicke, Esther and Ling, X. -X. and Li, X. -H. and Li, Q-L.},
doi = {10.1016/j.lithos.2018.01.008},
faupublication = {yes},
journal = {Lithos},
keywords = {Odenwald-Spessart basement; Paired metamorphic belt; Lu-Hf isotope data; U-Pb geochronology; Variscan orogeny},
pages = {278-297},
peerreviewed = {unknown},
title = {{New} evidence for an old idea: {Geochronological} constraints for a paired metamorphic belt in the central {European} {Variscides}},
year = {2018}
}
@article{faucris.248693165,
abstract = {Meta-basaltic eclogite occurs in the Erzgebirge in three high-pressure (HP) units (Unit 1, 2, and 3) as numerous lenses within high-grade felsic rocks. Units 2 and 3 are common HP units with quartz eclogite, and Unit 1 is an ultra-high pressure (UHP) unit with coesite eclogite, garnetite (metarodingite) and garnet peridotite. The conditions of peak metamorphism increase from Unit 3 (600–650 °C, 20–22 kbar), to Unit 2 (670–730 °C, 24–26 kbar) and Unit 1 (840–920 °C, ≥30 kbar), correlating with a decreasing abundance of hydrous minerals (from >10 vol% in Unit 3 to 0 vol% in Unit 1). In all units, the dominating eclogite type is dark-colored with a composition typical of MORB. A subordinate light type is chemically more variable and has higher contents of Mg, Al, Ca, Cr, Ni, and large ion lithophile elements as well as lower Fe, Zr, Y, and rare earth element concentrations than dark eclogite. Light eclogite formation is interpreted by plagioclase accumulation in a MOR magma chamber. No compositional difference is visible between well-preserved eclogite and samples with variable degrees of post-eclogitic overprint. In addition, dark eclogite from all units is compositionally indistinguishable, implying that prograde dehydration reactions did not modify major and trace element concentrations. This conclusion applies to all reactions in the temperature interval between c. 600 °C (peak T in Unit 3) and c. 900 °C (peak T in Unit 1), including prograde breakdown of calcic amphibole, zoisite, paragonite, and phengite. Together with previous studies on dehydration reactions in blueschist and eclogite at <600 °C (Spandler et al., 2003; Spandler et al., 2004), the present results imply that de-volatilization of the basaltic portion of subducting slabs plays only a minor, if any, role for the enrichment of fluid-mobile elements in the mantle wedge. We infer that most, if not all, of the H2O produced by dehydration reactions between 600 and 900 °C is preserved in eclogite due to the pressure-enhanced capability of garnet and omphacite to incorporate structural water. Incorporation of H2O, produced during the final dehydration stage (c. 800 ± 50 °C, 25–30 kbar), in nominally anhydrous minerals may explain why partial melting obviously did not occur in eclogite.},
author = {Schmädicke, Esther and Will, Thomas M.},
doi = {10.1016/j.lithos.2021.105995},
faupublication = {yes},
journal = {Lithos},
keywords = {Eclogite; Element mobility; Erzgebirge; Geochemistry; Mantle wedge; Meta-basalt},
note = {CRIS-Team Scopus Importer:2021-02-05},
peerreviewed = {Yes},
title = {{No} chemical change during high-{T} dehydration and re-hydration reactions: {Constraints} from {Erzgebirge} {HP} and {UHP} eclogite},
volume = {386-387},
year = {2021}
}
@article{faucris.209004980,
author = {Schmädicke, Esther and et al.},
author_hint = {Gose J., Schmädicke E., Markowitz M., Beran A.},
doi = {10.1007/s00710-009-0095-9},
faupublication = {yes},
journal = {Mineralogy and Petrology},
pages = {105-111},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{OH} point defects in olivine from {Pakistan}},
volume = {99},
year = {2010}
}
@article{faucris.209005276,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Gose J., Witt-Eickschen G., Brätz H.},
doi = {10.2138/am.2013.4440},
faupublication = {yes},
journal = {American Mineralogist},
keywords = {Olivine; Nominally anhydrous minerals; Trace elements; Spinel peridotite; Water content},
pages = {1870-1880},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Olivine} from spinel peridotite xenoliths: {Hydroxyl} incorporation and mineral composition},
volume = {98},
year = {2012}
}
@article{faucris.314050862,
abstract = {Erzgebirge ultrahigh-pressure (UHP) garnet peridotite includes scarce layers of garnet pyroxenite, nodules of garnetite and, very rarely, of eclogite. Peridotite-hosted eclogite shows the same subalkali-basaltic bulk rock composition, mineral assemblage and peak conditions as gneiss-hosted eclogite present in the same UHP unit. Garnetite has considerably more Mg, moderately enhanced Ca and Fe and significantly lower contents of Na, Ti, P, K and Si than eclogite, whereas Al is very similar. In addition, the compatible trace elements (Ni, Co, Cr, V) are elevated and most incompatible elements (Zr, Hf, Y, Sr, Rb and rare Earth elements [REE]) are depleted in garnetite relative to eclogite. In contrast to other large ion lithophile elements (LILEs), Pb (+121%) and Ba (+83%) are strongly enriched. The REE patterns of garnetite are characterized by depletion of light and heavy REE and a medium REE hump indicative of metasomatism, features being absent in eclogite. An exceptional garnetite sample shows an REE distribution similar to that of eclogite. Garnetite is interpreted to have formed from the same, but metasomatically altered, igneous protolith as eclogite. Except for Ba and Pb, the chemical signature of garnetite is explained best by metasomatic changes of its basaltic protolith caused by serpentinization of the host peridotite. Garnetite is chemically similar to basaltic rodingite/metarodingite. Although rodingite is commonly more enriched in Ca, there are also examples with moderately enhanced Ca matching the composition of Erzgebirge garnetite. Limited Ca metasomatism is attributed to the preservation of Ca in peridotite during hydrous alteration. This can be explained by incomplete serpentinization favouring metastable survival of the original clinopyroxene. In this case, most Ca is retained in peridotite and not available for infiltration and metasomatism of the garnetite protolith. This inescapable consequence is supported by the fact that clinopyroxene is part of the garnet peridotite UHP assemblage, which would not be the case if Ca had been removed from the protolith prior to high-pressure metamorphism. The enrichment of compatible elements in garnetite is attributed to decomposition of peridotitic olivine (Ni, Co) and spinel (Cr, V) during serpentinization. Enrichment of Ba and Pb contrasts the behaviour of other LILEs and is ascribed to dehydration of the serpentinized peridotite (deserpentinization). This requires two separate stages of metasomatism: (1) intense chemical alteration of the basaltic garnetite precursor, together with serpentinization of peridotite at the ocean floor or during incipient subduction; and (2) prograde metamorphism and dehydration of serpentinite during continued subduction, thereby releasing Pb–Ba-rich fluids that reacted with associated metabasalt. Finally, subduction to >100 km and UHP metamorphism of all lithologies led to formation of garnetite, eclogite and garnet pyroxenite hosted by co-facial garnet peridotite as observed in the Erzgebirge.},
author = {Schmädicke, Esther and Will, Thomas M.},
doi = {10.1111/jmg.12742},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {Erzgebirge; garnetite; rodingitization; serpentinization; UHP metamorphism},
note = {CRIS-Team Scopus Importer:2023-11-17},
pages = {1237-1259},
peerreviewed = {Yes},
title = {{Origin} of {Erzgebirge} ultrahigh-pressure garnetite: {Formation} from a basaltic protolith by serpentinization-assisted metasomatism?},
volume = {41},
year = {2023}
}
@article{faucris.209005590,
author = {Schmädicke, Esther and et al.},
author_hint = {Will T., Zeh A., Gerdes A., Frimmel H., Millar I., Schmädicke E.},
doi = {10.1016/j.precamres.2009.03.008},
faupublication = {yes},
journal = {Precambrian Research},
keywords = {Gondwana assembly; East Antarctica; Zircon and monazite U-Pb and Th-U-Pb dating; Shackleton Range},
pages = {25-45},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Palaeoproterozoic} to {Palaeozoic} magmatic and metamorphic events in the {Shackleton} {Range}, {East} {Antarctica}: {Constraints} from zircon and monazite dating, and implications for the amalgamation of {Gondwana}},
volume = {172},
year = {2009}
}
@article{faucris.209005924,
author = {Schmädicke, Esther and et al.},
author_hint = {Romer T., Mezger K., Schmädicke E.},
doi = {10.1111/j.1525-1314.2009.00820.x},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {Antarctica; Pan-African orogeny; Eclogite facies; Sm-Nd age dating; Shackleton Range},
pages = {335-347},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Pan}-{African} eclogite facies metamorphism of ultramafic rocks in the {Shackleton} {Range}, {Antarctica}},
volume = {27},
year = {2009}
}
@article{faucris.106136844,
abstract = {Alpine-type peridotites and associated pyroxenites are found as lenses in the continental crust in many different orogens. The reconstruction of the pressure-temperature (P-T) evolution of these rocks is, however, difficult or even impossible. With geothermobarometry, usually one point on the overall P-T path can be obtained. To use the different mineral assemblages observed in ultramafic rocks as P-T indicators, quantitative P-T phase diagrams are required. This study presents new calculated phase diagrams for peridotitic and pyroxenitic rocks in the model systems CaO-MgO-Al2O3-SiO2-H2O (CMASH) and Na2O-CaO-MgO-Al2O3-SiO2-H2O (NCMASH), which include the respective solid solutions as continuous exchange vectors. These phase diagrams represent applicable petrogenetic grids for peridotite and pyroxenite. On the basis of these general petrogenetic grids, phase diagrams for particular peridotite and pyroxenite bulk compositions are constructed. In an example of pyroxenite from the Shackleton Range, Antarctica, the different observed mineral assemblages are reflected by the phase diagrams. For these rocks, a high-pressure metamorphic stage around 18 kbar and an anticlockwise P-T evolution, not recognized previously, can be inferred.},
author = {Schmädicke, Esther},
faupublication = {no},
journal = {Journal of Petrology},
keywords = {Antarctic; High-pressure metamorphism; Peridotite; Phase diagrams; Pyroxenite},
note = {UnivIS-Import:2017-03-24:Pub.2000.nat.dgeo.IGM.profes{\_}1.phaser{\_}26},
pages = {69-86},
peerreviewed = {Yes},
title = {{Phase} relations in peridotitic and pyroxenitic rocks in the model systems {CMASH} and {NCMASH}},
volume = {41},
year = {2000}
}
@article{faucris.209006559,
author = {Schmädicke, Esther and et al.},
author_hint = {Will T., Okrusch M., Schmädicke E., Chen G.},
doi = {10.1007/s004100050406},
faupublication = {no},
journal = {Contributions To Mineralogy and Petrology},
pages = {85-102},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Phase} relations in the greenschist-blueschist-amphibolite-eclogite facies in the system {Na2O}-{CaO}-{FeO}-{MgO}-{Al2O3}-{SiO2}-{H} {2O} ({NCFMASH}), with application to metamorphic rocks from {Samos}, {Greece}},
volume = {132},
year = {1998}
}
@article{faucris.106108024,
abstract = {Lenses of ultramafic rocks intercalated within a metagabbro-amphibolite sequence were encountered in the KTB pilot hole. A pervasive metamorphic overprint formed the dominating assemblage calcic amphibole-orthoamphibole- chlorite-talc. In this study the phase relations of ultramafic rocks are investigated in order to (a) constrain the stability field of this assemblage in general, and (b) define the equilibrium pressure-temperature (P-T) conditions of this assemblage in the ultramafic rocks from the KTB borehole. For that purpose, phase equilibria were calculated in the model systems CaO-MgO-Al 2O3-SiO2-H2O (CMASH) and CaO-MgO-FeO-Al2O3-SiO2-H2O (CMFASH). Thereby, the continuous compositional change of solid solutions with pressure and temperature was modeled, including the Tschermak's substitution and the MgFe-1 exchange. Based on these results, petrogenetic grids were constructed, revealing that calcic amphibole-orthoamphibole-chlorite-talc assemblages cover a stability field of < 650-770°C/1 → 14 kbar (CMASH) and < 550-650°C/1 → 14 kbar (CMFASH), respectively. This explains the widespread occurrence of the considered assemblage. Based on the bulk rock composition of the KTB samples, a special P-T diagram was constructed, limiting the stability field of the calcic amphibole-orthoamphibole-chlorite- talc assemblage. At 580°C the stability field extends from 6 to 14 kbar pressure, and shrinks to 10-11 kbar at 630°C. Conventional estimates using the mineral compositions of the KTB samples yield a temperature around 630°C, at which the calculated stability field of calcic amphibole-orthoamphibole-chlorite-talc extends from 10 to 11 kbar. © Springer-Verlag 1997.},
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke Esther, Okrusch M.},
faupublication = {no},
journal = {International Journal of Earth Sciences},
keywords = {Bohemian massif; Geothermobarometry; KTB; Metamorphic rocks; Phase petrology; Ultramafic rocks; Variscides; Zone of Erbendorf-Vohenstrauss},
note = {UnivIS-Import:2017-03-24:Pub.1997.nat.dgeo.IGM.profes{\_}1.phaser},
pages = {212-221},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Phase} relations of calcic amphibole- orthoamphibole-chlorite-talc assemblages, with applications to ultramafic rocks from the {KTB} pilot hole, {Bavaria}},
volume = {86},
year = {1997}
}
@article{faucris.209007783,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Will T.},
doi = {10.1046/j.1525-1314.2003.00482.x},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {Exhumation; Cyclades; Pseudosection; High-pressure metamorphism; Sifnos},
pages = {799-811},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Pressure}-temperature evolution of blueschist facies rocks from {Sifnos}, {Greece}, and implications for the exhumation of high-pressure rocks in the {Central} {Aegean}},
volume = {21},
year = {2003}
}
@article{faucris.209008103,
author = {Schmädicke, Esther},
doi = {10.1127/ejm/3/2/0231},
faupublication = {no},
journal = {European Journal of Mineralogy},
pages = {231-238},
peerreviewed = {Yes},
title = {{Quartz} pseudomorphs after coesite in eclogites from the {Saxonian} {Erzgebirge}},
volume = {3},
year = {1991}
}
@article{faucris.209008378,
author = {Schmädicke, Esther and Will, Thomas M. and Ling, Xiaoxiao and Li, Xian-Hua and Li, Qiu-Li},
doi = {10.1016/j.lithos.2018.10.017},
faupublication = {yes},
journal = {Lithos},
keywords = {Erzgebirge; Exhumation; Eclogite; UHP metamorphism; Symplectite; U-Pb dating},
pages = {250-267},
peerreviewed = {unknown},
title = {{Rare} peak and ubiquitous post-peak zircon in eclogite: {Constraints} for the timing of {UHP} and {HP} metamorphism in {Erzgebirge}, {Germany}},
volume = {322},
year = {2018}
}
@article{faucris.119024224,
author = {Will, T. M. and Frimmel, H. E. and Zeh, A. and Le Roux, Petrus and Schmädicke, Esther},
doi = {10.1016/j.precamres.2010.03.005},
faupublication = {yes},
journal = {Precambrian Research},
note = {UnivIS-Import:2017-03-24:Pub.2010.nat.dgeo.IGM.profes{\_}1.texton},
pages = {85-112},
peerreviewed = {Yes},
title = {{Tectonic} and crustal evolution of the {Shackleton} {Range}, {East} {Antarctica}: {Geochemical} and isotope contraints},
year = {2010}
}
@article{faucris.118866924,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke Esther, Okrusch M., Schubert W., Elwart B., Görke U.},
faupublication = {no},
journal = {Mineralogy and Petrology},
note = {UnivIS-Import:2017-03-24:Pub.2001.nat.dgeo.IGM.profes{\_}1.themar},
pages = {77-111},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{The} marble horizon from {Auerbach}/{Odenwald}: {Phase} relations and {PT} evolution},
year = {2001}
}
@article{faucris.118839424,
abstract = {In the Proterozoic Schist Belt of Nigeria, lenticular bodies of metabasites and meta-ultramafics are frequently intercalated within staurolite bearing metapelitic schists. Such a metamorphosed mafic-ultramafic complex is particularly well exposed in the Mokuro riverbed between the towns of Ife and Ilesha. These outcrops display contact relationships with the surrounding metasediments, as well as between the individual mafic and ultramafic rock types. The most common mafic rocks are indistinctly layered amphibolites, accompanied by apatite rich amphibolites and massive amphibolites, in part rich in ilmenite and pyrrhotite. Among the generally massive ultramafic rocks, nearly monomineralic amphibole rocks predominate, while chlorite-amphibole, talc-chlorite-amphibole and talc bearing olivine-chlorite-amphibole rocks occur in subordinate amounts. Field, textural and geochemical evidence suggest that mafic-ultramafic complex derived from a thick, structurally differentiated basaltic sill that contained doleritic portions in its interior. Slow cooling rates in these inner parts enabled crystal settling with the formation of ultramafic cumulates. Due to the enrichment of volatiles during the crystallization process, higher amounts of apatite and sulphides, as well as late magmatic amphibole, were formed in parts of the mafic-ultramafic body. Mineral assemblages in the mafic-ultramafic complex testify to a metamorphic overprint under amphibolite-facies conditions. Thermodynamic modelling in the system CMFASH leads to an estimated P-T range of 1.5-3 kbar and 550-620°C for the metamorphic peak assemblage talc-olivine-chlorite-Ca amphibole-orthoamphibole.},
author = {Schmädicke, Esther and et al.},
author_hint = {Ige O. A., Okrusch M., Schüssler U., Schmädicke Esther, Cook N. J.},
doi = {10.1016/S0899-5362(98)00035-9},
faupublication = {no},
journal = {Journal of African Earth Sciences},
note = {UnivIS-Import:2017-03-24:Pub.1998.nat.dgeo.IGM.profes{\_}1.themet},
pages = {593-618},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{The} metamorphosed mafic-ultramafic complex of {Mokuro}, {Ilesha} {Schist} {Belt}, southwestern {Nigeria}},
volume = {26},
year = {1998}
}
@article{faucris.209009012,
author = {Schmädicke, Esther and Gose, Jürgen and Will, T. M.},
doi = {10.1111/j.1525-1314.2010.00876.x},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {Bohemian Massif; Garnet pyroxenite; Garnet peridotite; Ultra high temperature metamorphism; Saxonian Granulitgebirge},
pages = {489-508},
peerreviewed = {Yes},
title = {{The} {P}-{T} evolution of ultra high temperature garnet-bearing ultramafic rocks from the {Saxonian} {Granulitgebirge} {Core} {Complex}, {Bohemian} {Massif}},
volume = {28},
year = {2010}
}
@article{faucris.209009359,
author = {Will, T. M. and Schulz, Bernhard and Schmädicke, Esther},
doi = {10.1007/s00531-016-1375-3},
faupublication = {yes},
journal = {International Journal of Earth Sciences},
keywords = {In situ monazite age dating; 40Ar/39Ar age data; Odenwald–Spessart basement; Mid-German Crystalline Zone; Terrane boundary; Paired metamorphic belt},
pages = {1631-1649},
peerreviewed = {Yes},
title = {{The} timing of metamorphism in the {Odenwald}–{Spessart} basement, {Mid}-{German} {Crystalline} {Zone}},
volume = {106},
year = {2017}
}
@article{faucris.208998797,
author = {Schmädicke, Esther and et al.},
author_hint = {Schmädicke E., Müller W.},
faupublication = {no},
journal = {Contributions To Mineralogy and Petrology},
pages = {629-642},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Unusual} exsolution phenomena in omphacite and partial replacement of phengite by phlogopite + kyanite in an eclogite from the {Erzgebirge}},
url = {https://www.scopus.com/record/display.uri?eid=2-s2.0-0033732726&origin=inward},
volume = {139},
year = {2000}
}
@article{faucris.208995704,
author = {Will, T. M. and Lee, S. -H. and Schmädicke, Esther and Frimmel, H. E. and Okrusch, M.},
doi = {10.1016/j.lithos.2015.01.018},
faupublication = {yes},
journal = {Lithos},
keywords = {Metabasite; Eclogite; Odenwald; Mid-German Crystalline Zone; Terrane boundary; Spessart},
pages = {23-42},
peerreviewed = {Yes},
title = {{Variscan} terrane boundaries in the {Odenwald}-{Spessart} basement, {Mid}-{German} {Crystalline} {Zone}: {New} evidence from ocean ridge, intraplate and arc-derived metabasaltic rocks},
year = {2015}
}
@article{faucris.263747458,
abstract = {This study presents new secondary ion mass spectrometry (SIMS) reference materials (RMs) for measuring water contents in nominally anhydrous orthopyroxenes from upper mantle peridotites. The enstatitic reference orthopyroxenes from spinel peridotite xenoliths have Mg#s between 0.83 and 0.86, Al2O3 ranges between 4.02 and 5.56 wt%, and Cr2O3 ranges between 0.21 and 0.69 wt%. Based on Fourier-transform infrared spectroscopy (FTIR) characterizations, the water contents of the eleven reference orthopyroxenes vary from dry to 249 +/- 6 mu g/g H2O. Using these reference grains, a set of orthopyroxene samples obtained from variably altered abyssal spinel peridotites from the Atlantic and Arctic Ridges as well as from the Izu-Bonin-Mariana forearc region was analyzed by SIMS and FTIR regarding their incorporation of water. The major element composition of the sample orthopyroxenes is typical of spinel peridotites from the upper mantle, characterized by Mg#s between 0.90 and 0.92, Al2O3 between 1.66 and 5.34 wt%, and Cr2O3 between 0.62 and 0.96 wt%. Water contents as measured by SIMS range from 68 +/- 7 to 261 +/- 11 mu g/g H2O and correlate well with Al2O3 contents (r = 0.80) and Cr#s (r(.) = -0.89). We also describe in detail an optimized strategy, employing both SIMS and FTIR, for quantifying structural water in highly altered samples such as abyssal peridotite. This approach first analyzes individual oriented grains by polarized FTIR, which provides an overview of alteration. Subsequently, the same grain along with others of the same sample is measured using SIMS, thereby gaining information about homogeneity at the hand sample scale, which is key for understanding the geological history of these rocks.},
author = {Wenzel, Kirsten and Wiedenbeck, Michael and Gose, Jürgen and Rocholl, Alexander and Schmädicke, Esther},
doi = {10.1007/s00710-021-00757-9},
faupublication = {yes},
journal = {Mineralogy and Petrology},
note = {CRIS-Team WoS Importer:2021-09-10},
peerreviewed = {Yes},
title = {{Water} contents of nominally anhydrous orthopyroxenes from oceanic peridotites determined by {SIMS} and {FTIR}},
year = {2021}
}
@article{faucris.209010630,
author = {Schmädicke, Esther and Gose, Jürgen and Stalder, R.},
doi = {10.1029/2017GC007390},
faupublication = {yes},
journal = {Geochemistry Geophysics Geosystems},
keywords = {restitic mantle; water content; nominally anhydrous minerals; orthopyroxene; MORB source; abyssal peridotite},
pages = {1824-1843},
peerreviewed = {Yes},
title = {{Water} in {Abyssal} {Peridotite}: {Why} {Are} {Melt}-{Depleted} {Rocks} so {Water} {Rich}?},
volume = {19},
year = {2018}
}
@article{faucris.209010963,
author = {Gose, Jürgen and Schmädicke, Esther},
doi = {10.1093/petrology/egy022},
faupublication = {yes},
journal = {Journal of Petrology},
keywords = {Water; Eclogite; Amphibole; Fichtelgebirge; Erzgebirge; Nominally anhydrous minerals; Garnet; Ultra-high pressure metamorphism; Subduction},
pages = {207-232},
peerreviewed = {unknown},
title = {{Water} incorporation in garnet: {Coesite} versus quartz eclogite from {Erzgebirge} and {Fichtelgebirge}},
volume = {59},
year = {2018}
}
@article{faucris.209011289,
author = {Schmädicke, Esther and et al.},
author_hint = {Gose J., Schmädicke E., Beran A.},
doi = {10.1130/G25558A.1},
faupublication = {yes},
journal = {Geology},
pages = {543-546},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Water} in enstatite from {Mid}-{Atlantic} {Ridge} peridotite: {Evidence} for the water content of suboceanic mantle?},
volume = {37},
year = {2009}
}
@article{faucris.240990611,
abstract = {Little is known about water in nominally anhydrous minerals of orogenic garnet peridotite and enclosed metabasic rocks. This study is focused on peridotite-hosted eclogite and garnetite (metarodingite) from the Erzgebirge (EG), Germany, and the Lepontine Alps (LA), Switzerland. Newly discovered, peridotite-hosted eclogite in the Erzgebirge occurs in the same ultra-high pressure (UHP) unit as gneiss-hosted coesite eclogite, from which it is petrologically indistinguishable. Garnet is present in all mafic and ultramafic high pressure (HP) rocks providing for an ideal proxy to compare the H2O content of the different rock types. Garnet composition is very similar in EG and LA samples and depends on the rock type. Garnet from garnetite, compared to eclogite, contains more CaO (garnetite: 10.5–16.5 wt%; eclogite: 5–11 wt%) and is also characterized by an anomalous REE distribution. In contrast, the infrared (IR) spectra of garnet from both rock types reveal the same OH absorption bands that are also identical to those of previously studied peridotitic garnet from the same locations. Two groups of IR bands, SW I (3,650 ± 10 cm−1) and SW II (3,570–3,630 cm−1) are ascribed to structural hydroxyl (colloquially ‘water’). A third, broad band is present in about half of the analysed garnet domains and related to molecular water (MW) in submicroscopic fluid inclusions. The primary content of structural H2O, preserved in garnet domains without fluid inclusions (and MW bands), varies systematically—depending on both the location and the rock type. Garnet from EG rocks contains more water compared to LA samples, and garnet from garnetite (EG: 121–241 wt.ppm H2O; LA: 23–46 wt.ppm) hosts more water than eclogitic garnet (EG: 84 wt.ppm; LA: 4–11 wt.ppm). Higher contents of structural water (SW) are observed in domains with molecular water, in which the SW II band (being not restricted to HP conditions) is simultaneously enhanced. This implies that fluid influx during decompression not only led to fluid inclusions but also favoured the uptake of secondary SW. The results signify that garnet from all EG and LA samples was originally H2O-undersaturated. Combining the data from eclogite, garnetite and previously studied peridotite, H2O and CaO are positively correlated, pointing to the same degree of H2O-undersaturation at peak metamorphism in all rock types. This ubiquitous water-deficiency cannot be reconciled with the derivation of any of these rocks from the lowermost part of the mantle wedge that was in contact with the subducting plate. This agrees with the previously inferred abyssal origin for part of the rocks from the LA (Cima di Gagnone). A similar origin has to be invoked for the Erzgebirge UHP unit. We suggest that all mafic and ultramafic rocks of this unit not only shared the same metamorphic evolution but also a common protolith origin, most probably on the ocean floor. This inference is supported by the presence of peridotite-hosted garnetite, representing metamorphosed rodingite.},
author = {Schmädicke, Esther and Gose, Jürgen},
doi = {10.1111/jmg.12554},
faupublication = {yes},
journal = {Journal of Metamorphic Geology},
keywords = {eclogite; Erzgebirge; garnet; Lepontine Alps; metarodingite; structural water},
note = {CRIS-Team Scopus Importer:2020-07-31},
peerreviewed = {Yes},
title = {{Water} in garnet of garnetite (metarodingite) and eclogite from the {Erzgebirge} and the {Lepontine} {Alps}},
year = {2020}
}
@article{faucris.209011600,
author = {Schmädicke, Esther and et al.},
author_hint = {Gose J., Schmädicke E., Stalder R.},
doi = {10.1127/0935-1221/2011/0023-2122},
faupublication = {yes},
journal = {European Journal of Mineralogy},
keywords = {Infrared spectroscopy; Hydrogen diffusion; Nominally anhydrous minerals; Mid-Atlantic-Ridge; Serpentinization; Orthopyroxene; Water loss; Spinel peridotite},
pages = {529-536},
peerreviewed = {Yes},
support_note = {Author relations incomplete. You may find additional data in field 'author{\_}hint'},
title = {{Water} in mantle orthopyroxene-no visible change in defect water during serpentinization},
volume = {23},
year = {2011}
}
@article{faucris.106998144,
abstract = {Here we present water concentration data for olivine from different host rocks, measured with a nuclear technique using proton-proton scattering. This method, which is used here for the first time on olivine, is very powerful for determining trace amounts of water. The studied olivine specimens differ in their H2O contents, ranging from 4 to 51 wt ppm (=10-117 atom ppm H). The lowest concentrations are found in olivine from spinel peridotite xenoliths, the highest concentrations in olivine from alpine-type peridotite; the contents of an ophiolitic and a hydrothermal olivine are intermediate. Infrared spectroscopy was applied to ensure that the measured water contents stem solely from hydroxyl defects in the mineral structure. The infrared spectra differ from sample to sample. Five of six olivine specimens show absorption bands typical of hydroxyl groups associated with Ti defects. These olivines differ in their Ti contents by two orders of magnitude. However, a correlation of water and Ti content was not observed.},
author = {Gose, Jürgen and Reichart, Patrick and Dollinger, Guenther and Schmädicke, Esther},
doi = {10.2138/am.2008.2835},
faupublication = {yes},
journal = {American Mineralogist},
keywords = {Hydroxyl defects; Nominally anhydrous minerals; Olivine; Peridotite; Proton-proton scattering; Water content},
note = {UnivIS-Import:2017-03-24:Pub.2008.nat.dgeo.IGM.legeo.wateri},
pages = {1613-1619},
peerreviewed = {Yes},
title = {{Water} in natural olivine - determined by proton-proton scattering analysis.},
volume = {93},
year = {2008}
}
@article{faucris.209012315,
author = {Hesse, Kirsten and Gose, Jürgen and Stalder, Roland and Schmädicke, Esther},
doi = {10.1016/j.lithos.2015.06.011},
faupublication = {yes},
journal = {Lithos},
keywords = {Geothermometry; East Pacific Rise; Nominally anhydrous minerals; Infrared spectroscopy; Upper mantle; Orthopyroxene water content},
pages = {23-34},
peerreviewed = {Yes},
title = {{Water} in orthopyroxene from abyssal spinel peridotites of the {East} {Pacific} {Rise} ({ODP} {Leg} 147: {Hess} {Deep})},
volume = {232},
year = {2015}
}
@article{faucris.257695478,
abstract = {Orthopyroxene was analyzed as a proxy for water supra-subduction-zone peridotite by polarized infrared radiation. Samples from Conical and Torishima seamounts, Mariana-Izu-Bonin forearc (ODP-Leg 125), have very similar average H2O contents of 215 ppm (range: 122–363 ppm; Conical) and 191 ppm (range: 116–292 ppm; Torishima). Conical peridotite equilibrated at lower temperature (760°C) and oxygen fugacity (ΔlogFMQ −0.65) than samples from Torishima (830°C; ΔlogFMQ +0.33). The degree of partial melting is almost identical for the two sites (18% and 20%). The H2O concentrations are considerably higher compared to samples from the Bismarck forearc (31–92 ppm; Tollan and Hermann, 2019). Instead, the average values resemble those of peridotitic orthopyroxene from MOR settings. The measured H2O contents by far exceed values expected for residual peridotite. This implies that secondary uptake of water must have occurred after melt-extraction but prior to exhumation to shallow crustal levels. Most likely, re-equilibration took place at c. 50 km depth. As indicated by elemental correlations and/or enhanced contents, the secondary fluid(s) must have been enriched in B, K, Li, and Sr. The boron contents of orthopyroxene are c. 10 times higher those in MOR samples. These findings suggest that peridotite from Conical and Torishima seamounts was presumably infiltrated by fluid generated by dehydration reactions in a subducting plate. The elemental spectrum points to two source lithologies: (i) serpentinite (liberation of B) and metasediments (liberation of K, Li, and Sr). The varying H2O contents point to heterogeneous fluid supply suggesting that fluid infiltration was not pervasive.},
author = {Gose, Jürgen and Schmädicke, Esther},
doi = {10.1029/2020GC009586},
faupublication = {yes},
journal = {Geochemistry Geophysics Geosystems},
keywords = {: mantle wedge; Mariana-Izu-Bonin forearc; orthopyroxene; peridotite; water},
note = {CRIS-Team Scopus Importer:2021-05-07},
peerreviewed = {Yes},
title = {{Water} in the {Supra}-{Subduction}-{Zone} {Mantle} of the {Mariana}-{Izu}-{Bonin} {Forearc}: {Constraints} {From} {Peridotitic} {Orthopyroxene}},
volume = {22},
year = {2021}
}
@article{faucris.209012633,
author = {Schmädicke, Esther and Gose, Jürgen},
doi = {10.2138/am-2017-5920},
faupublication = {yes},
journal = {American Mineralogist},
keywords = {garnet; Eclogite; nominally anhydrous minerals; infrared spectroscopy; subduction; omphacite; water},
pages = {975-986},
peerreviewed = {Yes},
title = {{Water} transport by subduction: {Clues} from garnet of {Erzgebirge} {UHP} eclogite},
volume = {102},
year = {2017}
}