Revised paleomagnetic pole for the Sonoma volcanics, California
Revised paleomagnetic pole for the Sonoma volcanics, California
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修正后的加利福尼亚州索诺玛火山古地磁极
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
E. A. Mankinen
中科院分区：
文献类型：
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作者：
E. A. Mankinen
对加利福尼亚州北部的中新世和上新世索诺玛火山进行了古地磁采样，以补充早期的收集。来自 25 个冷却装置的数据产生正折叠和反转测试，古地磁极位于北纬 80.2°，东经 069.2°，α95 = 6.8°。该古极点明显移位（纬度 9.6° ± 5.3°）到地理极点的远端。数据在方向和 VGP 空间上的高度椭圆分布表明，地磁长期变化的不完全平均比火山场向北平移更可能解释这种异常。
Paleomagnetic sampling of the Miocene and Pliocene Sonoma Volcanics, northern California, was undertaken to supplement an earlier collection. Data from 25 cooling units yield positive fold and reversal tests, and a paleomagnetic pole located at 80.2°N., 069.2°E., with α95 = 6.8°. This paleopole is significantly displaced (9.6° ± 5.3° of latitude) to the farside of the geographic pole. A highly elliptical distribution of the data in both direction and VGP space indicates that incomplete averaging of geomagnetic secular variation is a more likely explanation for this anomaly than is northward translation of the volcanic field.