ROLLER-BEARING TECTONIC EVOLUTION OF THE JUAN-FERNANDEZ MICROPLATE

被引：75

作者：

LARSON, RL

SEARLE, RC

KLEINROCK, MC

SCHOUTEN, H

BIRD, RT

NAAR, DF

RUSBY, RI

HOOFT, EE

LASTHIOTAKIS, H

机构：

[1] UNIV DURHAM,DEPT GEOL SCI,DURHAM DH1 3LE,ENGLAND

[2] WOODS HOLE OCEANOG INST,WOODS HOLE,MA 02543

[3] UNIV S FLORIDA,DEPT MARINE SCI,ST PETERSBURG,FL 33701

[4] MIT WHO JOINT PROGRAM,WOODS HOLE,MA 02543

[5] UNIV TORONTO,DEPT GEOL,TORONTO M5S 3B1,ONTARIO,CANADA

来源：

NATURE | 1992年 / 356卷 / 6370期

关键词：

D O I：

10.1038/356571a0

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：

A combined GLORIA sidescan and Hydrosweep multi-narrow-beam sonar survey shows striking evidence for fan-shaped spreading systems, bounding pseudofaults and compression ridges associated with 90-degrees of clockwise rotation of the Juan Fernandez microplate in the past 4 Myr. A quantitative analysis of this evolution suggests that the microplate has rotated as a rigid 'roller bearing' for most of its history, driven at its edges by shear between the surrounding major plates. The remarkable similarity between the Juan Fernandez and Easter microplates, despite their different tectonic settings, suggests that this is a general model for microplate tectonics.

引用

页码：571 / 576

页数：6

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