文章基本信息

标题：Geomagnetic paleointensity over 1.2 Ma from deep-tow vector magnetic data across the East Pacific Rise
本地全文：下载
作者：Michiko Yamamoto ; Nobukazu Seama ; Nobuhiro Isezaki 等
期刊名称：Earth, Planets and Space
电子版ISSN：1880-5981
出版年度：2014
卷号：57
期号：5
页码：465-470
DOI：10.1186/BF03351835
出版社：Springer Verlag
摘要：Deep-tow vector magnetic data have been acquired across the fast-spreading southern East Pacific Rise 18°S and inverted to magnetization intensity variations. Vector magnetic data are used to determine continuous magnetic intensity within intervals of constant polarity over the Matuyama and Brunhes periods up to the Cobb Mountain event at 1.19 Ma. A comparison of our deep-tow vector data and a sediment core-derived geomagnetic paleointensity timescale suggests that the short-wavelength magnetic anomaly signal is indeed of geomagnetic origin and can be used to date the seafloor with a high resolution. The crustal age determined from our date reveals a highly asymmetric spreading rate for the recent period (since 0.3 Ma).