AMAZON DEEP-SEA FAN MUDS - LIGHT REE ENRICHED PRODUCTS OF EXTREME CHEMICAL-WEATHERING

被引：80

作者：

NESBITT, HW ^{[1
]}

MACRAE, ND ^{[1
]}

KRONBERG, BI ^{[1
]}

机构：

[1] LAKEHEAD UNIV,DEPT GEOL,THUNDER BAY P7B 5E1,ONTARIO,CANADA

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1990年 / 100卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0012-821X(90)90180-6

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Pleistocene muds collected over a wide area of the Amazon deep-sea fan display light rare earth element (LREE) enrichment patterns when normalized to the North American shale composite (NASC). The patterns appear to reflect the results of extreme in-situ weathering combined with particle size sorting rather than source rock composition or diagenetic processes. This explanation is supported by the mineralogical and major element compositions of the muds; they are highly aluminous (20-26% Al2O3) and contain large amounts of kaolinite. © 1990.

引用

页码：118 / 123

页数：6

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