DOI: 10.1007/s00531-015-1267-y
Scopus记录号: 2-s2.0-84949483251
论文题名: Thermal history of the westernmost Eastern Alps (Penninic Rhenodanubian Flysch nappes, Helvetic nappes, and Subalpine Molasse thrust sheets)
作者: Zerlauth M. ; Bertrand A. ; Rantitsch G. ; Groß D. ; Ortner H. ; Pomella H. ; Fügenschuh B.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 5 起始页码: 1525
结束页码: 1547
语种: 英语
英文关键词: Apatite fission track dating
; Diagenesis to very low-grade metamorphism
; Helvetic nappes
; Penninic Rhenodanubian Flysch nappes
; Subalpine Molasse thrust sheets
; Thermal modelling
; Vitrinite reflectance
Scopus关键词: apatite
; diagenesis
; fission track dating
; low grade metamorphism
; petrogenesis
; petrology
; tectonic evolution
; tectonic setting
; thrust
; Alps
; Eastern Alps
英文摘要: The frontal part of the westernmost Eastern Alps comprises from top to bottom of the Austroalpine and Penninic nappes, Ultrahelvetic slices, and two Helvetic thrust sheets, thrust upon the northern Alpine Molasse Basin. The thermal evolution of the Penninic Rhenodanubian Flysch nappes, the Helvetic nappes, and the allochthonous part of the Alpine Molasse Basin is constrained by vitrinite reflectance measurements and apatite fission track dating and implemented in a tectonic evolution scheme. Within the Helvetic nappes, vitrinite reflectance increases regionally from north to south and stratigraphically from the Campanian–Maastrichtian Wang Formation to the Toarcian Mols Member. Apatite fission track ages from Penninic and Subalpine Molasse units are consistently younger than the deposition age. They indicate therefore a post-depositional thermal overprint exceeding approximately 120 °C, the upper temperature limit of the apatite partial annealing zone. 1D thermal modelling suggests that the Penninic nappes attained deepest burial between the latest Cretaceous and Early Palaeocene with the Penninic basal thrust being located at approximately 8 km in the north compared to approximately 12 km in the south. Deepest burial of the upper Helvetic nappe occurred between the latest Eocene and Early Miocene. Its base was buried down to approximately 10.5 km in the north compared to 11.5 km in the south. Exhumation of the entire nappe stack started in the Early to Middle Miocene. For both Penninic and Helvetic models, a heatflow minimum during the Cenozoic deformation (max. 27–32 mW/m2), followed by an increase from the Middle Miocene onwards (up to 60 mW/m2), was assumed. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949483251&doi=10.1007%2fs00531-015-1267-y&partnerID=40&md5=66a613b2d4973d6edc7e17b47fb22da0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70154
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: alpS – Centre for Climate Change Adaptation, Grabenweg 68, Innsbruck, Austria; Department Applied Geosciences and Geophysics, Montanuniversität Leoben, Peter-Tunner-Straße 5, Leoben, Austria; Institute of Geology, University of Innsbruck, Innrain 52, Innsbruck, Austria
Recommended Citation:
Zerlauth M.,Bertrand A.,Rantitsch G.,et al. Thermal history of the westernmost Eastern Alps (Penninic Rhenodanubian Flysch nappes, Helvetic nappes, and Subalpine Molasse thrust sheets)[J]. International Journal of Earth Sciences,2016-01-01,105(5)