Arid
DOI10.1130/G23378A.1
Subsurface seismic record of salt glaciers in an extensional intracontinental setting (Late Triassic of northwestern Germany)
Mohr, Markus; Warren, John K.; Kukla, Peter A.; Urai, Janos L.; Irmen, Anton
通讯作者Mohr, Markus
来源期刊GEOLOGY
ISSN0091-7613
出版年2007
卷号35期号:11页码:963-966
英文摘要

In the Northwest German Basin of Central Europe, Late Triassic interaction of normal faulting and salt diapirism during regional extension in subsalt basement locally initiated lateral flow of surface-piercing salt in namakiers (salt glaciers). Using seismic sections and variance attribute maps derived from high-resolution three-dimensional seismic data, we show that when a syndepositional fault cuts a near-emergent diapir crest, the caprock carapace was breached, opening a pathway for salt extrusion. The fault escarpment and the adjacent fault-induced depression allowed focused gravity-driven downward flow of salt across the land surface (a namakier) and its subsequent preservation and encasement in continental (arid redbed) sediments. Geodynamically there is an apparent distinction between the compressional setting of modern namakiers in the and deserts of Iran and the fault-intersected extensional setting of stacked Keuper namakiers. Stacked namakiers preserved in thicknesses that are seismically resolvable are interpreted to indicate hyperarid conditions in Keuper time. The climate was typical of the highly continental Late Triassic Pangaean supercontinent as it rifted and sagged to form the incipient Atlantic Ocean.


英文关键词salt glacier diapirs Northwest German Basin continental redbeds extension
类型Article
语种英语
国家Germany ; Oman
收录类别SCI-E
WOS记录号WOS:000250543900001
WOS关键词NW-GERMANY
WOS类目Geology
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154315
作者单位(1)Rhein Westfal TH Aachen, Inst Geol, D-52056 Aachen, Germany;(2)Sultan Qaboos Univ, Shell Chair Carbonate Studies, Muscat, Oman;(3)Gaz France Prod Explorat Deutschland GmbH, Lingen, Germany
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GB/T 7714
Mohr, Markus,Warren, John K.,Kukla, Peter A.,et al. Subsurface seismic record of salt glaciers in an extensional intracontinental setting (Late Triassic of northwestern Germany)[J],2007,35(11):963-966.
APA Mohr, Markus,Warren, John K.,Kukla, Peter A.,Urai, Janos L.,&Irmen, Anton.(2007).Subsurface seismic record of salt glaciers in an extensional intracontinental setting (Late Triassic of northwestern Germany).GEOLOGY,35(11),963-966.
MLA Mohr, Markus,et al."Subsurface seismic record of salt glaciers in an extensional intracontinental setting (Late Triassic of northwestern Germany)".GEOLOGY 35.11(2007):963-966.
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