MANTLE MELTING AND BASALT EXTRACTION BY EQUILIBRIUM POROUS FLOW

被引：123

作者：

LUNDSTROM, CC ^{[1
]}

GILL, J ^{[1
]}

WILLIAMS, Q ^{[1
]}

PERFIT, MR ^{[1
]}

机构：

[1] UNIV FLORIDA, DEPT GEOL, GAINESVILLE, FL 32611 USA

来源：

SCIENCE | 1995年 / 270卷 / 5244期

关键词：

D O I：

10.1126/science.270.5244.1958

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 chemical composition of mid-ocean ridge basalt, the most prevalent magma type on the planet, reflects the melt's continuous reequilibration with the surrounding mantle during porous flow. Models of basalt extraction that account for the observed uranium-series disequilibria on the Juan de Fuca ridge constrain both the abundance of melt beneath ridges (0.1 to 0.2 percent) and the style of mantle melting. Unlike models that incorporate near-fractional melts (dynamic melting), mixing of equilibrium porous flow melts derived from heterogeneous source materials quantitatively explains the uranium-series observations.

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页码：1958 / 1961

页数：4

相关论文

共 35 条

[1] IMPLICATIONS OF A 2-COMPONENT MARBLE-CAKE MANTLE [J].

ALLEGRE, CJ ;

TURCOTTE, DL .

NATURE, 1986, 323 (6084) :123-127

[2] URANIUM THORIUM DISEQUILIBRIA AND PARTITIONING ON MELTING OF GARNET PERIDOTITE [J].

BEATTIE, P .

NATURE, 1993, 363 (6424) :63-65

[3]

BENOTHMAN D, 1990, EARTH PLANET SC LETT, V98, P129

[4]

CHADWICK WW, 1991, NATURE, V350, P4168

[5] GEOCHEMICAL AND STRUCTURAL STUDIES OF THE LAMONT SEAMOUNT - SEAMOUNTS AS INDICATORS OF MANTLE PROCESSES [J].

FORNARI, DJ ;

PERFIT, MR ;

ALLAN, JF ;

BATIZA, R ;

HAYMON, R ;

BARONE, A ;

RYAN, WBF ;

SMITH, T ;

SIMKIN, T ;

LUCKMAN, MA .

EARTH AND PLANETARY SCIENCE LETTERS, 1988, 89 (01) :63-83

[6] GEOCHRONOLOGY AND PETROGENESIS OF MORB FROM THE JUAN DE FUCA AND GORDA RIDGES BY U-238 TH-230 DISEQUILIBRIUM [J].

GOLDSTEIN, SJ ;

MURRELL, MT ;

JANECKY, DR ;

DELANEY, JR ;

CLAGUE, DA .

EARTH AND PLANETARY SCIENCE LETTERS, 1991, 107 (01) :25-41

[7] PA-231 AND TH-230 CHRONOLOGY OF MIDOCEAN RIDGE BASALTS [J].

GOLDSTEIN, SJ ;

MURRELL, MT ;

WILLIAMS, RW .

EARTH AND PLANETARY SCIENCE LETTERS, 1993, 115 (1-4) :151-159

[8] EQUILIBRATION DURING MANTLE MELTING - A FRACTAL TREE MODEL [J].

HART, SR .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1993, 90 (24) :11914-11918

[9] MAGMATISM IN THE GARRETT TRANSFORM-FAULT (EAST PACIFIC RISE NEAR 13-DEGREES-27-MINUTES-S) [J].

HEKINIAN, R ;

BIDEAU, D ;

HEBERT, R ;

NIU, YL .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1995, 100 (B6) :10163-10185

[10] U-238 TH-230-RA-226 AND U-235 PA-231 DISEQUILIBRIA PRODUCED BY MANTLE MELTING WITH POROUS AND CHANNEL FLOWS [J].

IWAMORI, H .

EARTH AND PLANETARY SCIENCE LETTERS, 1994, 125 (1-4) :1-16

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