A GEOMAGNETIC POLARITY TIME-SCALE FOR THE PERIOD 0-17 MA, BASED ON 40AR/39AR PLATEAU AGES FOR SELECTED FIELD REVERSALS

被引：63

作者：

BAKSI, AK

机构：

[1] Department of Geology&Geophysics, Louisiana State University

来源：

GEOPHYSICAL RESEARCH LETTERS | 1993年 / 20卷 / 15期

关键词：

D O I：

10.1029/93GL01876

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Utilizing 40Ar/39Ar plateau ages for selected field reversals at approximately 1, 2, 10, 16 and 34 Ma, a geomagnetic polarity time scale (GPTS) is constructed, following the technique of Cande and Kent [1992]. This differs markedly from previous GPTS, especially in middle-late Miocene time; the ages for the chrons in post-Miocene time are in agreement with values derived by the astrochronological technique. Refinements in this GPTS await acquisition of 40Ar/39Ar plateau ages for field reversals in the time frames 3-8 Ma and 11-15 Ma.

引用

页码：1607 / 1610

页数：4

共 30 条

[1]

ANDREIEFF P, 1976, B BUR RECH GEOL MIN, V4, P335

[2] A NEW CALIBRATION POINT FOR THE LATE MIOCENE SECTION OF THE GEOMAGNETIC POLARITY TIME-SCALE - 40AR/39AR DATING OF LAVA FLOWS FROM AKAROA VOLCANO, NEW-ZEALAND [J].