GEOCHEMISTRY AND ORIGIN OF ANDESITIC ROCKS FROM NORTHWESTERN SARDINIA

被引：26

作者：

DUPUY, C

DOSTAL, J

COULON, C

机构：

[1] ST MARYS UNIV,DEPT GEOL,HALIFAX B3H 3C3,NS,CANADA

[2] UNIV ST JEROME,PETROL LAB,F-13397 MARSEILLE,FRANCE

来源：

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH | 1979年 / 6卷 / 3-4期

关键词：

D O I：

10.1016/0377-0273(79)90011-8

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The chemical variations in the continental-margin andesitic suite from northwestern Sardinia are compatible with a mechanism involving both fractional crystallization and contamination. Contamination is probably related to interaction with ignimbrites formed by crustal anatexis, which are spatially and temporally associated with andesitic rocks. A similar process may have also affected other calc-alkaline andesitic suites such as those of New Zealand and southern Peru where the contents of lithophile elements and the Sr isotope ratios appear to be related to the composition of associated ignimbrites. © 1979.

引用

页码：375 / 389

页数：15

共 47 条

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