气候变化领域集成服务门户(CCPortal): Three-dimensional geological modeling supports a revised Burdigalian chronostratigraphy in the North Alpine Foreland Basin

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DOI	10.1007/s00531-019-01780-0
	Three-dimensional geological modeling supports a revised Burdigalian chronostratigraphy in the North Alpine Foreland Basin
	Hofmayer F.; Kirscher U.; Sant K.; Krijgsman W.; Fritzer T.; Jung D.; Weissbrodt V.; Reichenbacher B.
发表日期	2019
ISSN	14373254
起始页码	2627
结束页码	2651
卷号	108 期号:8
英文摘要	Precise age data are a basic prerequisite for the correlation of a sedimentary succession with the Global Time Scale, which in turn allows one to place its biotic and other data in a global context. In the North Alpine Foreland Basin (NAFB), a patchy distribution of outcrops and uncertainties in the correlation of strata have led to conflicting age models, in particular for deposits of lower Miocene (Burdigalian) age. Here, we present a new three-dimensional geological model of the SE German sector of the NAFB, covering an area of 13,200 km2, which helps to resolve the discrepancies. The dataset comprises lithostratigraphic information from 150 boreholes, supplemented by magnetostratigraphic data from six outcrops. Computer-based 3D modeling was conducted with the open source software QGIS for a 500-m-thick succession comprising units of the Upper Marine Molasse, the brackish Oncophora Fm and the Upper Freshwater Molasse. The results provide new insights pertaining to (1) the isochrony of strata, (2) subsidence, and (3) synsedimentary tectonics. The new data permit us to reliably place the outcrops within the regional lithostratigraphic scheme, thus enabling a new correlation of their magnetic polarities with the Global Time Scale. On this basis, we propose a revised age model for the middle and upper Burdigalian strata in the eastern part of the NAFB, which is supported by previously reported 87Sr/86Sr age data. The model indicates that the succession is substantially—up to 0.8 Ma—younger than earlier publications have suggested. Furthermore, it implies that the two synsedimentary tectonic events discerned may both be related to the large-scale tectonic movements that affected the NAFB during the late Burdigalian. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	3D model; Ottnangian–Karpatian; S-German Molasse Basin; Sr-isotope ages; Stratigraphy; Tectonics
语种	英语
scopus关键词	Burdigalian; chronostratigraphy; foreland basin; lithostratigraphy; strontium isotope; tectonic evolution; three-dimensional modeling; Molasse Basin; Oncophora
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147763
作者单位	Department of Earth- and Environmental Sciences, Palaeontology and Geobiology, Ludwig-Maximilians-University, Richard-Wagner-Strasse 10, Munich, 80333, Germany; Geological Survey of Austria, Neulinggasse 38, Vienna, 1030, Austria; Department of Geosciences, Eberhard Karls University Tübingen, Sigwartstr. 10, Tübingen, 72076, Germany; Paleomagnetic Laboratory “Fort Hoofddijk”, Department of Earth Sciences, Utrecht University, Budapestlaan 17, Utrecht, 3584 CD, Netherlands; Bayerisches Landesamt für Umwelt, Dienststelle Augsburg, Haunstetter Straße 112, Augsburg, 86161, Germany; Bayerisches Landesamt für Umwelt, Dienststelle Hof, Hans-Högn-Straße 12, Hof/Saale, 95030, Germany; Department of Earth and Environmental Sciences, Geophysics, Ludwig-Maximilians-University, Theresienstraße 41, Munich, 80333, Germany
推荐引用方式 GB/T 7714	Hofmayer F.,Kirscher U.,Sant K.,et al. Three-dimensional geological modeling supports a revised Burdigalian chronostratigraphy in the North Alpine Foreland Basin[J],2019,108(8).
APA	Hofmayer F..,Kirscher U..,Sant K..,Krijgsman W..,Fritzer T..,...&Reichenbacher B..(2019).Three-dimensional geological modeling supports a revised Burdigalian chronostratigraphy in the North Alpine Foreland Basin.International Journal of Earth Sciences,108(8).
MLA	Hofmayer F.,et al."Three-dimensional geological modeling supports a revised Burdigalian chronostratigraphy in the North Alpine Foreland Basin".International Journal of Earth Sciences 108.8(2019).