THE MATACHEWAN DYKE SWARM, CANADA - AN EARLY PROTEROZOIC MAGNETIC-FIELD REVERSAL

被引：44

作者：

HALLS, HC

机构：

[1] Department of Geology, J. Tuzo Wilson Research Laboratories, University of Toronto, Mississauga, Ont. L5L 1C6, Erindale Campus

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1991年 / 105卷 / 1-3期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0012-821X(91)90137-7

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：

Consistent age relationships between oppositely magnetized dykes of the 2.45 Ga matachewan dyke swarm suggest that only a single magnetic field reversal occurred during the period of igneous activity. The magnetic field throughout most of this time was characterized by a SSW declination and shallow negative inclination but reversed toward the waning stages of magmatism. The new paleomagnetic data provide the oldest known magnetic reversal for which the relative reversal sense is known.

引用

页码：279 / 292

页数：14

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