EVIDENCE FROM GRAVITY-DATA FOR FOCUSED MAGMATIC ACCRETION ALONG THE MID-ATLANTIC RIDGE

被引：462

作者：

LIN, J ^{[1
]}

PURDY, GM ^{[1
]}

SCHOUTEN, H ^{[1
]}

SEMPERE, JC ^{[1
]}

ZERVAS, C ^{[1
]}

机构：

[1] UNIV WASHINGTON, SCH OCEANOG, SEATTLE, WA 98195 USA

来源：

NATURE | 1990年 / 344卷 / 6267期

关键词：

D O I：

10.1038/344627a0

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：

Gravity data from the Mid-Atlantic Ridge between latitudes 27°50′N and 30°40′N show that the accretion of magma at the ridge is focused at discrete centres along the spreading axis. Large positive gravity anomalies equivalent to reductions of almost 50% in crustal thickness are observed over non-transform discontinuities bounding spreading segments. © 1990 Nature Publishing Group.

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页码：627 / 632

页数：6

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