Repeated sedimentation and exposure of glacial Lake Missoula sediments: A lake-level history at Garden Gulch, Montana, USA

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• 作者：Larry N. Smith ^{lsmith@mtech.edu}
• 关键词：Quaternary ; Geomorphology ; Glacial Lake Missoula ; Periglacial ; Active-layer wedge ; North America
• 刊名：Quaternary Science Reviews
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：155
• 期：Complete
• 页码：114-126
• 全文大小：7660 K
• 卷排序：155

文摘

Lake-bottom glaciolacustrine sediments were subaerially exposed 12 times at the Garden Gulch section. Glacial Lake Missoula filled to, and fluctuated around, near its highstand position 7–12 times in the late Pleistocene. Cryogenic deformation was due to seasonal cold and desiccation. Features attributable to permafrost are not present.