On the age and morphology of the reunion event

被引：26

作者：

Baksi, AK ^{[1
]}

Hoffman, KA

机构：

[1] Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA

[2] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 94307 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2000年 / 27卷 / 18期

关键词：

D O I：

10.1029/2000GL008536

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Data pertinent to the age of the normal polarity Reunion "Event" (or subchron), and whether it is a split feature, are critically examined. New 40Ar/39Ar age determinations on lavas from two sequences on Reunion Island, along with available potassium-argon (K-Ar), 40Ar/39Ar and astrochronological analyses, indicate an age of 2.15 - 2.13 Ma. Although the possibility cannot be completely ruled out, at present there is no convincing evidence supporting the contention of a short duration of normal polarity some 70 - 90 kyr later.

引用

页码：2997 / 3000

页数：4

共 32 条

[1]

Baksi A. K., 1989, GEOL SOC AM SPEC PAP, V239, P105, DOI [10.1130/SPE239-p105, DOI 10.1130/SPE239-P105]

[2] ISOTOPIC FRACTIONATION OF A LOOSELY HELD ATMOSPHERIC ARGON COMPONENT IN PICTURE GORGE BASALTS [J].

BAKSI, AK .

EARTH AND PLANETARY SCIENCE LETTERS, 1974, 21 (04) :431-438

[3] TESTING THE ACCURACY OF THE GEOMAGNETIC POLARITY TIME-SCALE (GPTS) AT 2-5 MA, UTILIZING 40AR/39AR INCREMENTAL HEATING DATA ON WHOLE-ROCK BASALTS [J].

BAKSI, AK ;

HOFFMAN, KA ;

MCWILLIAMS, M .

EARTH AND PLANETARY SCIENCE LETTERS, 1993, 118 (1-4) :135-144

[4] Mesozoic igneous activity in the Maranhao province, northern Brazil: 40Ar/39Ar evidence for separate episodes of basaltic magmatism [J].

Baksi, AK ;

Archibald, DA .

EARTH AND PLANETARY SCIENCE LETTERS, 1997, 151 (3-4) :139-153

[5] Reevaluation of plate motion models based on hotspot tracks in the Atlantic and Indian Oceans [J].

Baksi, AK .

JOURNAL OF GEOLOGY, 1999, 107 (01) :13-26

[6] FINE-TUNING THE RADIOMETRICALLY DERIVED GEOMAGNETIC POLARITY TIME-SCALE (GPTS) FOR 0-10-MA [J].

BAKSI, AK .

GEOPHYSICAL RESEARCH LETTERS, 1995, 22 (04) :457-460

[7] CONCORDANT SEA-FLOOR SPREADING RATES OBTAINED FROM GEOCHRONOLOGY, ASTROCHRONOLOGY AND SPACE GEODESY [J].

BAKSI, AK .

GEOPHYSICAL RESEARCH LETTERS, 1994, 21 (02) :133-136

[8] GEOCHRONOLOGICAL STUDIES ON WHOLE-ROCK BASALTS, DECCAN TRAPS, INDIA - EVALUATION OF THE TIMING OF VOLCANISM RELATIVE TO THE K-T BOUNDARY [J].

BAKSI, AK .

EARTH AND PLANETARY SCIENCE LETTERS, 1994, 121 (1-2) :43-56

[9]

BAKSI AK, 1987, GEOLOGY, V15, P147, DOI 10.1130/0091-7613(1987)15<147:CEOTAO>2.0.CO

[10]

← 1 2 3 4 →