HEAT-FLOW CONSTRAINTS ON THE WEST AFRICAN LITHOSPHERE STRUCTURE

被引：19

作者：

LESQUER, A

VASSEUR, G

机构：

[1] Centre Géologique et Géophysique, CNRS, Montpellier

来源：

GEOPHYSICAL RESEARCH LETTERS | 1992年 / 19卷 / 06期

关键词：

D O I：

10.1029/92GL00263

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Heat production measurements from the West-African shield have been compiled using various samples of crustal rocks. There is no clear indication for a systematic variation of heat production with age which could explain the regional heat flow density (HFD) variations by corresponding variations of the crustal component. HFD values are positively correlated with the P-wave travel time residuals deduced from teleseismic observations and negatively correlated with gravity isostatic anomalies. We propose that regional HFD variations are significative of change in the upper mantle structure.

引用

页码：561 / 564

页数：4

共 12 条

[1] EVIDENCE FOR LATE PRECAMBRIAN PLATE TECTONICS IN WEST-AFRICA [J].