Amazon deep-sea fan muds: light REE enriched products of extreme chemical weathering

Details Amazon deep-sea fan muds: light REE enriched products of extreme chemical weathering Amazon deep-sea fan muds: light REE enriched products of extreme chemical weathering

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl.100..118n&link_type=abstract

Earth and Planetary Science Letters, Volume 100, Issue 1-3, p. 118-123.

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8

Scientific paper

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.

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