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| Titel |
Post-Variscan exhumation history and long-term landscape evolution of the western Rhenish Massif and surrounding areas |
| VerfasserIn |
M. Sehrt, U. A. Glasmacher, P. Kukla, D. F. Stockli, M. Wipf |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250044624
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| Zusammenfassung |
| The Northern Linksrheinisches Schiefergebirge is the western part of the Variscan fold-and-thrust belt in Central Europe. Published apatite fission-track ages cover the range of 159 (10) Ma to 203 (21) Ma in the Northern Linksrheinisches Schiefergebirge. The post-Variscan thermal and exhumation history of the foreland and fold-and-thrust belt in the Northern Linksrheinisches Schiefergebirge is part of the general post-Variscan geological evolution of the Rhenish Massif. To unravel the post-Variscan exhumation history and long-term landscape evolution samples of the RWTH-1 drill cuttings from various depths were analyzed. The well RWTH-1 is located at the Aachen Thrust in Aachen, Germany.
The four thermochronometric analyses (fission-track, (U-Th)/He on apatite and zircon each) and furthermore 2-D Modelling with HeFTy were performed at the Devonian to Carboniferous rocks of the RWTH-1.
The apatite (U-Th-Sm)/He ages of 5-10 Ma clarify, that the geothermal gradient is very young. The apatite fission-track ages ranging between 43-174 Ma confirm the published AFT data of the surrounding area and points to a post-Triassic exhumation. The zircon (U-Th)/He ages ranging from 198-239 Ma suggest an earlier post-Variscan exhumation, starting during the Lower-Middle Triassic. Comparing these results to existing geological records enable us to identify and quantify the relevant tectonic processes that shape the landscape of the western Rhenish Massif. |
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