THE RELATIONSHIP BETWEEN MAGNETIC-FIELD STRENGTH AND REVERSAL FREQUENCY - PRELIMINARY PALEOINTENSITY RESULTS FROM THE CRETACEOUS QUIET ZONE

被引：4
|
作者：
SHERWOOD, GJ
SHAW, J
机构：
[1] Geomagnetism Laboratory, Department of Earth Sciences, University of Liverpool, Liverpool, L69 3BX
来源：
STUDIA GEOPHYSICA ET GEODAETICA | 1991年 / 35卷 / 04期
关键词：
D O I：
10.1007/BF01613978
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：
It has been predicted that the geomagnetic field strength will be at its highest during periods of low reversal frequency. Using basaltic lavas from Israel and India, which were erupted during the 35 Ma interval of normal polarity in the mid-Cretaceous (the Cretaceous Quiet Zone), we have obtained palaeointensity estimates. The mean virtual dipole moments from the two areas are about 75% of the present value. This suggests that there is no simple relationship between the time averaged strength of the dipole and the frequency of reversals.
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页码：325 / 333
页数：9
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