High-resolution magnetostratigraphy of four sediment cores from the Greenland Sea .1. Identification of the Mono Lake excursion, Laschamp and Biwa I Jamaica geomagnetic polarity events

被引：48

作者：

Nowaczyk, NR

Antonow, M

机构：

[1] UNIV BREMEN, FACHBEREICH GEOWISSENSCH, D-28334 BREMEN, GERMANY

[2] TU BERGAKAD FREIBERG, INST GEOL, D-09596 FREIBERG, GERMANY

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1997年 / 131卷 / 02期

关键词：

Biwa I event; Brunhes Chron; Greenland Sea; Laschamp event; magnetostratigraphy; Mono Lake excursion;

D O I：

10.1111/j.1365-246X.1997.tb01224.x

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：

High-resolution magnetostratigraphic analysis of three sediment cores from the base of the volcanic seamount Vesteris Banken in the Greenland Basin and one core from the Jan Mayen Fracture Zone revealed records of three pronounced geomagnetic events within the last 200 ka. Dating by stable carbon and oxygen isotope analysis, AMS(14)C measurements and biostratigraphic data (foraminifera abundances) yielded ages of 28-27 ka for the Mono Lake excursion, 37-33 ka for the Laschamp event, and 189-179 ka for the Biwa I event, In at least one of the cores the Laschamp event exhibits a full reversal of the local geomagnetic field vector, The same is true of the Biwa I event, documented in one of the cores.

引用

页码：310 / 324

页数：15

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