Conodont and carbon isotope stratigraphy near the Frasnian/Famennian (Devonian) boundary at Wulankeshun, Junggar Basin, NW China

Journal article
(Original article)


Publication Details

Author(s): Wang ZH, Becker RT, Aboussalam ZS, Hartenfels S, Joachimski M, Gong YM
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology
Publisher: Elsevier
Publication year: 2016
Volume: 448
Pages range: 279-297
ISSN: 0031-0182


Abstract


Conodont faunas from the Wulankeshun section in the northwestern Junggar Basin of Xinjiang, NW China, are characterized by shallow-water assemblages with many endemic taxa. This study presents separate local icriodid and polygnathid conodont zonations for the Lower Member of the Hongguleleng Formation, which can only roughly be correlated with the pelagic "standard zonation". The basal beds of the Hongguleleng Formation are assigned to a low diverse Icriodus praealternatus ferus n. ssp. Zone, which possibly includes latest Frasnian strata but it continues into the basal Famennian. At present, the Frasnian/Famennian boundary cannot be defined unequivocally by conodonts and there are no obvious Upper Kellwasser equivalents. However, the carbon isotope data are comparable with the Bulongguor Reservoir stratotype, where the top-Frasnian lies within the basal Hongguleleng Formation. In the early Famennian, partly endemic icriodid lineages provide successive Icriodus cornutus, I. stenoancylus junggarensis n. ssp., and I. plurinodosus n. sp. (sub)zones. The basal Famennian is possibly marked by the oldest, endemic species of Neopolygnathus, Neo. huijunae n. sp. It is followed by local Neo. communis communis, "Polygnathus" pomeranicus, Po. cf. szulczewskii, and "Po." pseudocommunis n. sp. zones. The new local conodont zonations provide a high biostratigraphic resolution for further future studies. The Wulankeshun shallow-water conodont faunas show restricted similarities with contemporaneous faunas from eastern Europe, Kazakhstan, and Iran. There are a few taxa that were originally described from other distant regions, such as NW Canada and eastern Australia. The local high number of endemic taxa (17 (sub)species, 46%) points to a significant plate tectonic isolation of the Junggar Basin in the early Famennian.



FAU Authors / FAU Editors

Joachimski, Michael Prof. Dr.
Lehrstuhl für Geologie (Exogene Dynamik)


External institutions
China University of Geosciences / 中国地质大学
Westfälische Wilhelms-Universität (WWU) Münster


How to cite

APA:
Wang, Z.H., Becker, R.T., Aboussalam, Z.S., Hartenfels, S., Joachimski, M., & Gong, Y.M. (2016). Conodont and carbon isotope stratigraphy near the Frasnian/Famennian (Devonian) boundary at Wulankeshun, Junggar Basin, NW China. Palaeogeography, Palaeoclimatology, Palaeoecology, 448, 279-297. https://dx.doi.org/10.1016/j.palaeo.2015.12.029

MLA:
Wang, Z. H., et al. "Conodont and carbon isotope stratigraphy near the Frasnian/Famennian (Devonian) boundary at Wulankeshun, Junggar Basin, NW China." Palaeogeography, Palaeoclimatology, Palaeoecology 448 (2016): 279-297.

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Last updated on 2018-17-11 at 20:50