Magnetic lineations in the ancient crust of Mars

被引：367

作者：

Connerney, JEP ^{[1
]}

Acuña, MH

Wasilewski, PJ

Ness, NF

Rème, H

Mazelle, C

Vignes, D

Lin, RP

Mitchell, DL

Cloutier, PA

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[3] Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France

[4] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[5] Rice Univ, Dept Space Phys & Astron, Houston, TX 77005 USA

来源：

SCIENCE | 1999年 / 284卷 / 5415期

关键词：

D O I：

10.1126/science.284.5415.794

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 Mars Global Surveyor spacecraft, in a highly elliptical polar orbit, obtained vector magnetic field measurements above the surface of Mars (altitudes >100 kilometers). Crustal magnetization, mainly confined to the most ancient, heavily cratered martian highlands, is frequently organized in east-west-trending linear features, the Longest extending over 2000 kilometers. Crustal remanent magnetization exceeds that of terrestrial crust by more than an order of magnitude. Groups of quasi-parallel linear features of alternating magnetic polarity were found. They are reminiscent of similar magnetic features associated with sea floor spreading and crustal genesis on Earth but with a much Larger spatial scale. They may be a relic of an era of plate tectonics on Mars.

引用

页码：794 / 798

页数：5

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