Some pitfalls in paleosol interpretation in carbonate sequences
Some pitfalls in paleosol interpretation in carbonate sequences
复制标题
碳酸盐序列古土壤解释中的一些陷阱
DOI：
10.1007/bf03175383
复制
发表时间：
1991
影响因子：
1.4
通讯作者：
J. Mylroie
中科院分区：
文献类型：
--
作者：
J. Carew;J. Mylroie
在主要由风成岩组成的第四纪碳酸盐岩单元中，古土壤是重要的地层标志，有助于区分与冰川-海平面升降有关的碳酸盐沉积事件。以这种方式使用古土壤可能会被误解，从而导致地质记录解释的错误。一些可能的陷阱包括：未能区分红土古土壤和钙屑岩原生土;未能认识到单独的古土壤可能横向合并成复合古土壤;未能认识到单一的古土壤可能在高度风化的基岩中分叉;未能认识到填充岩溶特征的土壤衍生物质。巴哈马的第四纪碳酸盐岩被用来说明这些陷阱，这些陷阱可能发生在任何年龄的碳酸盐岩中。
In Quaternary carbonate units composed mostly of eolianites, paleosols are important stratigraphic markers that help differentiate episodes of carbonate deposition tied to glacio-eustatic sea level fluctuations. Paleosols used in this manner can be misinterpreted, and thus lead to errors in interpretation of the geologic record. Some possible pitfalls include: failure to differentiate between terra-rossa paleosols and calcarenite protosols; failure to recognize that separate paleosols may merge laterally into composite paleosols; failure to recognize that single paleosols may bifurcate in highly weathered bedrock; and failure to recognize soil-derived material that infills karst features. The Quaternary carbonates of the Bahamas are used to illustrate these pitfalls, which may occur in carbonates of any age.