%0 Journal Article
%T Rb-Sr and 40Ar/39Ar Ages of the Adamellite in Sanligang Area<br>湖北省随州三里岗地区二长花岗岩Rb-Sr、40Ar/39Ar同位素年龄
%A SHI Yu-ruo
%A ZHANG Zong-qing
%A LIU Dun-yi
%A TANG Suo-hai
%A WANG Jin-hui
%A CHEN Wen
%A ZHANG Si-hong
%A LIU Xin-yu
%A <br>石玉若
%A 张宗清
%A 刘敦一
%A 唐索寒
%A 王进辉
%A 陈文
%A 张思红
%A 刘新宇
%J 地球学报
%D 2005
%I 
%X The Sanligang adamellite is one of the main tectonic blocks of the Huashan ophiolitic melange and has an intrusive contact with the basic volcanic rocks. The determination of the isotopic age of this adamellite can lead to determining the upper limit of the isotopic chronology of the Huashan ophiolitic melange. The ages of the adamellite in Sanligang area were measured by Sm-Nd, Rb-Sr and 40Ar/39Ar methods. The mean age of the model ages tDM determined by 3 samples is 1 064±105 Ma. 12 whole-rock samples present a Rb-Sr isochron age of 422±53(2o)Ma. Hornblende picked out from the adamellite gives an 40Ar/39Ar age of 141.4±0.3 Ma. The results indicate that the age of the volcanic rocks of the Huashan ophiolitic melange is older than 422 Ma.
%K Sanligang
%K adamellite
%K isotopic chronology<br>三里岗
%K 二长花岗岩
%K 同位素年代
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=82E53A58B96F5AABD4D15BEE35CFA860&yid=2DD7160C83D0ACED&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=BCA2697F357F2001&eid=A04140E723CB732E&journal_id=1006-3021&journal_name=地球学报&referenced_num=2&reference_num=11