Interaction between bimodal volcanism, fluvial sedimentation and basin development in the Permo-Carboniferous Saar-Nahe Basin (south-west Germany)

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Stollhofen H, Stanistreet IG
Zeitschrift: Basin Research
Verlag: Wiley-Blackwell
Jahr der Veröffentlichung: 1994
Band: 6
Heftnummer: 4
Seitenbereich: 245-267
ISSN: 0950-091X
Sprache: Englisch


Abstract


Widespread bimodal-calcalkaline magmatism and contemporaneously active faulting reflect

the combined effects of late-orogenic collapse and strike-slip faulting during syn-rift

development of the late-Variscan Saar-Nahe Basin. The intrabasinal drainage systems

experienced major but differing influences from three prominent styles of volcanic

extrusives: extensive basic lava flows; localized acidic domes; and widespread pyroclastic

units.

Sedimentary sections including basic to intermediate lavas show the transformation of

pre-eruptive meandering fluvial systems into lacustrine systems following lava eruptions.

These relationships are interpreted in terms of damming of the drainage systems by the

topographic barriers represented by the basic lavas themselves. Siliciclastic sediments

re-entered and ultimately filled the lakes through prograding, small-scale crevasse

channel / mouth bar complexes.

Uplift associated with the intrusive / extrusive emplacement of acidic domes affected both

the accommodation space and the internal topography of the basin. Following an extrusive

pulse, each dome collapse caused the progradation of voluminous volcaniclastic aprons onto

the surrounding alluvial plain. Locally, the overload by large volumes of unconsolidated

detritus converted the regional meandering drainage system into a braided one. The overall

duration of acidic dome activity could have been longer than lo6 years, but was interrupted

by repose periods varying probably between a few hundred years to several thousand years.

the stratigraphic record. Fine-grained ashes of phreatoplinian eruptions were spread widely

within the basin and overloaded streams in the area of fallout. Rapid reworking of huge

amounts of unconsolidated material supplied an abundance of volcanic detritus, which

tended to fill topographic lows that were usually fault-controlled.

The relationships between basin evolution, intrabasinal volcanism and contemporaneously

active faulting, identified in the Saar-Nahe Basin, are important. They emphasize and

further the understanding of how similar volcanic products in sedimentary basins worldwide

impacted on the depositional system.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Stollhofen, Harald Prof. Dr.
Lehrstuhl für Geologie (Exogene Dynamik)


Einrichtungen weiterer Autorinnen und Autoren

The University of Liverpool


Zitierweisen

APA:
Stollhofen, H., & Stanistreet, I.G. (1994). Interaction between bimodal volcanism, fluvial sedimentation and basin development in the Permo-Carboniferous Saar-Nahe Basin (south-west Germany). Basin Research, 6(4), 245-267. https://dx.doi.org/10.1111/j.1365-2117.1994.tb00088.x

MLA:
Stollhofen, Harald, and Ian G. Stanistreet. "Interaction between bimodal volcanism, fluvial sedimentation and basin development in the Permo-Carboniferous Saar-Nahe Basin (south-west Germany)." Basin Research 6.4 (1994): 245-267.

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