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标题：The sinkhole enigma in the Alpine Foreland, Southeast Germany: Evidence of impact-induced rock liquefaction processes
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作者：Kord Ernstson ; Werner Mayer ; Andreas Neumair 等
期刊名称：Open Geosciences
电子版ISSN：2391-5447
出版年度：2011
卷号：3
期号：4
页码：385-397
DOI：10.2478/s13533-011-0038-y
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：Abstract Sudden collapse of the Quaternary soil to form sinkholes on the order of meters and tens of meters has been a geologic phenomenon within living memory in a localized area north of Lake Chiemsee in Southeast Germany. Failing a satisfying explanation, a relation with an undefined glaciation process has always been proposed. Excavations and geophysical measurements at three newly affected sites show underground features such as prominent sandy-gravelly intrusions and extrusions typical of rock liquefaction processes well known to occur during strong earthquakes. Since strong earthquakes can reasonably be excluded to have affected the area under discussion, it has been suggested that the observed widespread liquefaction is related with the recently proposed Holocene Chiemgau meteorite impact event. Except for one earlier proposed but unassertive relation between impact and liquefaction, the obviously direct association of both processes in the Chiemgau area emphasizes that observed paleoliquefaction features need not necessarily have originated solely from paleoseismicity but can provide a recognizable regional impact signature.
其他关键词：Keywordsensinkholes (thunderholes)liquefactionseismicitymeteorite impactKienberg-Southern Germany