The late Neogene Sr-87/Sr-86 record of lowland Himalayan rivers

被引：151

作者：

Quade, J

Roe, L

DeCelles, PG

Ojha, TP

机构：

[1] Department of Geosciences, Desert Laboratory, University of Arizona, Tucson

来源：

SCIENCE | 1997年 / 276卷 / 5320期

关键词：

D O I：

10.1126/science.276.5320.1828

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Fossil shells and paleosol carbonate from ancestral Himalayan river deposits provide a Sr-87/Sr-86 record of lowland Himalayan river water during the late Neogene. Reconstructed Sr-87/Sr-86 river values increased sharply in the late Miocene, probably marking the beginning of exhumation of high Sr-87/Sr-86 metalimestones, more in the central than in the western Himalayas. These results imply that the marine Sr-87/Sr-86 record may not be a proxy for silicate weathering or consumption of atmospheric CO2 resulting from that weathering.

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页码：1828 / 1831

页数：4

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