地磁极性时期：一个新的极性事件和松山布容极性期的年龄。

Geomagnetic polarity epochs: a new polarity event and the age of the brunhes-matuyama boundary.

出版信息

Science. 1966 May 20;152(3725):1060-1. doi: 10.1126/science.152.3725.1060.

DOI:10.1126/science.152.3725.1060

Abstract

Recent paleomagnetic-radiometric data from six rhyolite domes in the Valles Caldera, New Mexico, indicate that the last change in polarity of the earth's magnetic field from reversed to normal (the Brunhes-Matuyama boundary) occurred at about 0.7 million years ago. A previously undiscovered geomagnetic polarity event, herein named the "Jaramillo normal event," occurred about 0.9 million years ago.

摘要

最近来自新墨西哥州瓦勒斯 Caldera 的六个流纹岩穹丘的古地磁-放射性年代数据表明，地球磁场从反转到正向（布容-松山界线）的最后一次极性反转发生在大约 70 万年前。一个以前未被发现的地磁极性事件，本文命名为“杰拉米洛正向事件”，发生在大约 90 万年前。