Pb-207/Pb-206 and 40Ar/39Ar geochronology of the palaeoproterozoic granites of the Rio Itapicuru Greenstone Belt (Bahia, Brazil)

被引：0
|
作者：
Chauvet, A
Guerrot, C
daSilva, FA
Faure, M
机构：
[1] UNIV ORLEANS, FR 09, F-45067 ORLEANS 2, FRANCE
[2] BUR RECH GEOL & MINIERES, SGN, I2G, F-45060 ORLEANS 2, FRANCE
[3] UFBA, INST GEOCIENCIAS, BR-40210340 SALVADOR, BA, BRAZIL
来源：
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 324卷 / 04期
关键词：
granite; palaeoproterozoic; Pb-evaporation; 40Ar/39Ar geochronology; cooling rate; Greenstone Belt; Brazil;
D O I：
暂无
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Pb-207/Pb-206 and 40Ar/39Ar geochronology can accurately determine the crystallization age of the granites of the Palaeoproterozoic Rio Itapicuru Greenstone Belt, and allow discussion of a cooling model in which slow rates of ca. 3.4 degrees C/Ma were involved.
引用
收藏
页码：293 / 300
页数：8
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