Dynamics of the erosion in the Irrawaddy River basin during the last two climatic cycles (280-0 ka).

被引：7

作者：

Colin, C ^{[1
]}

Bertaux, J

Turpin, L

Kissel, C

机构：

[1] Univ Paris Sud, UPS Orsayterre, CNRS, UMR, F-91405 Orsay, France

[2] Ctr IRD, UR Paleotrop, F-93143 Bondy, France

[3] CEA, CNRS, Lab Mixte, Lab Sci Climat & Environm, F-91198 Gif Sur Yvette, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 2001年 / 332卷 / 08期

关键词：

Burman ranges; monsoon; erosion; mineralogy; neodymium;

D O I：

10.1016/S1251-8050(01)01565-8

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Core MD77-169, located in the Andaman Sea, is characterized by epsilon (Nd)(0) ranging between -9.5 and -11, implying that the Irrawaddy River is the main contributor of detrital material. The pedogenic clays (smectite and kaolinite) to primary mineral (feldspar, quartz, illite and chlorite) ratios show strong precessional cycles, suggesting that they are controlled by past changes in the monsoon intensity. Wet periods of summer monsoon reinforcement are characterized by the increase of chemical weathering and/or physical erosion of the Irrawaddy plain soils. (C) 2001 Academie des sciences / Editions scientifiques et medicales Elsevier SAS.

引用

页码：483 / 489

页数：7

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