HIGH MAGNESIA LIQUIDS AS THE PARENTAL MAGMA FOR OCEAN-FLOOR BASALTS

被引：128

作者：

ELTHON, D ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT GEOL SCI,NEW YORK,NY 10027

来源：

NATURE | 1979年 / 278卷 / 5704期

关键词：

D O I：

10.1038/278514a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The primary melt segregating from the upper mantle beneath an oceanic ridge is shown to contain ~18% MgO. Whereas these primary liquids are capable of generating the petrological features of the oceanic crust, this is not possible for tholeiitic basalts with 9-11% MgO which are highly fractionated. Compositions of liquids ranging from primary melts to high calcium picrites from the Tortuga ophiolite complex, Chile, are reported. © 1979 Nature Publishing Group.

引用

页码：514 / 518

页数：5

共 34 条

[1] PETROGENESIS OF BASALTS FROM PROJECT FAMOUS AREA - EXPERIMENTAL-STUDY FROM 0-KBAR TO 15-KBARS [J].