The origin of stratified Catfish Creek Till by basal melting
The origin of stratified Catfish Creek Till by basal melting
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基底融化造成的分层鲶鱼溪耕地的起源
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发表时间：
2008
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通讯作者：
P. Gibbard
中科院分区：
文献类型：
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作者：
P. Gibbard
本文介绍了安大略西南部伊利湖北岸出露的威斯康星晚期分层鲶鱼溪丘的横向和垂直变化的沉积学研究。沉积特征和地层关系的冰碛物结合的粒度和碳酸盐分析的结果表明，它是由底部融化形成的浮动，覆盖冰架下。这与早期的研究相反，早期的研究认为冰碛物是由附近的接地冰缘形成的一系列水下流动形成的。本文还对底融成层冰碛的成因、意义和特点与水下流和冰山漂流作了对比。
Sedimentological investigations into the lateral and vertical variation of Late Wisconsinan stratified Catfish Creek Till exposed on the north shore of Lake Erie, in southwestern Ontario, are presented. Depositional features and stratigraphical relations of the till combined with the results of granulometric and carbonate analyses indicate that it was formed beneath a floating, overriding ice shelf by basal melting. This is contrary to earlier work which suggested the till was formed as a series of subaquatic flows from a nearby grounding ice margin. The genesis of stratified till by basal melting, its significance and characteristics are contrasted with those of subaquatic flowage and iceberg-rafting.