Submitted on: 10 May 2005.
Revised on: 02 July 2005.
Accepted on: 25 July 2005.
___________________Geochemistry---ELSEVIER GMBH
http://reply.papertrans.cn/2/106/10537/10537-32.png
Submitted on: 11 June 2003.
Revised on: 29 July 2003.
Accepted on: 08 August 2003.
___________________Geochemistry---ELSEVIER GMBH
Submitted on: 24 September 2010.
Revised on: 18 October 2010.
Accepted on: 17 November 2010.
___________________Geochemistry---ELSEVIER GMBH
http://reply.papertrans.cn/2/106/10537/10537-35.png
Submitted on: 12 February 2004.
Revised on: 18 May 2004.
Accepted on: 10 July 2004.
___________________Geochemistry---ELSEVIER GMBH