TEMPORAL TRENDS OF MAGNETIC DISSOLUTION IN THE PELAGIC REALM - GAUGING PALEOPRODUCTIVITY

被引：79

作者：

TARDUNO, JA

机构：

[1] Department of Earth and Environmental Sciences, University of Rochester, Rochester

来源：

EARTH AND PLANETARY SCIENCE LETTERS | 1994年 / 123卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0012-821X(94)90255-0

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：

Magnetic hysteresis data from the western equatorial Pacific suggest that the preservation of magnetic remanence in pelagic carbonates is controlled by paleoproductivity. Hysteresis excursions (100 k.y. intervals) are linked here to greater magnetic dissolution associated with increased glacial organic carbon supply. Changes in the redox boundary coupled to glacial terminations result in anomalous magnetic features which are preserved in the sedimentary record. These high-frequency variations are superimposed on a longer term signal of magnetic dissolution which may reflect decreased productivity since the Miocene.

引用

页码：39 / 48

页数：10

共 39 条

[1]

BARTON CE, 1986, DSDP90 IN REP, P1273

[2]

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