“bottomset beds”的概念、定义、翻译、参考文献-科学参考

单词	bottomset beds
释义	bottomset beds Geology and Earth Sciences 1. The part of a cross-bedded set of sediments that forms at the base of the downcurrent or lee-side of a dune- or ripple-form structure. 2. Offshore clays formed at the base of a prograding deltaic sequence. See also delta; progradation.
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