STRONTIUM ISOTOPES IN BASALTS FROM PACIFIC OCEAN BASIN

被引：54

作者：

HEDGE, CE

机构：

[1] U.S. Geological Survey, Denver Federal Center, Denver

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1978年 / 38卷 / 01期

关键词：

D O I：

10.1016/0012-821X(78)90127-9

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Basalts being erupted in the Pacific Ocean Basin vary in Sr isotopic composition in a simple geographic pattern. 87Sr/86Sr increases away from the East Pacific Rise to very high values for islands in the south-central Pacific. The 87Sr/86Sr variations are almost certainly related to past segregation of Rb, K, and other large cations. The segregation process was probably incipient partial melting which resulted in various mantle zones being enriched or depleted. © 1978.

引用

页码：88 / 94

页数：7

共 20 条

[1]

ENGEL AEJ, 1965, GEOL SOC AM BULL, V76, P719, DOI 10.1130/0016-7606(1965)76[719:CCOOBA]2.0.CO

[2]

[3] TRACE ELEMENT FRACTIONATION AND ORIGIN OF THOLEIITIC AND ALKALINE MAGMA TYPES [J].

GAST, PW .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1968, 32 (10) :1057-&

[4] LIMITATIONS ON THE COMPOSITION OF THE UPPER MANTLE [J].

GAST, PW .

JOURNAL OF GEOPHYSICAL RESEARCH, 1960, 65 (04) :1287-1297

[5] ISOTOPIC COMPOSITION OF LEAD + STRONTIUM FROM ASCENSION + GOUGH ISLANDS [J].

GAST, PW ;

HEDGE, C ;

TILTON, GR .

SCIENCE, 1964, 145 (363) :1181-&

[6] K, RB, CS, SR AND BA CONTENTS AND SR ISOTOPE RATIOS OF OCEAN FLOOR BASALTS [J].

HART, SR .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1971, 268 (1192) :573-&

[7] SUBMARINE BASALTS FROM KILAUEA RIFT HAWAII - NONDEPENDENCE OF TRACE-ELEMENT COMPOSITION ON EXTRUSION DEPTH [J].

HART, SR .

EARTH AND PLANETARY SCIENCE LETTERS, 1973, 20 (02) :201-203

[8] SR87-SR86 RATIOS IN BASALTS FROM ISLANDS IN INDIAN-OCEAN [J].

HEDGE, CE ;

WATKINS, ND ;

HILDRETH, RA ;

DOERING, WP .

EARTH AND PLANETARY SCIENCE LETTERS, 1973, 21 (01) :29-34

[9] STRONTIUM ISOTOPIC COMPOSITION OF BASALTS FROM GORDO AND JUAN DE FUCA RISES, NORTHEASTERN PACIFIC-OCEAN [J].

HEDGE, CE ;

PETERMAN, ZE .

CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1970, 27 (02) :114-&

[10]

HEDGE CE, 1972, GEOL SOC AM BULL, V83, P2709, DOI 10.1130/0016-7606(1972)83[2709:POLFWS]2.0.CO

← 1 2 →