40AR/39AR age and duration of tholeiitic magmatism related to the early opening of the Red Sea rift
- 1 February 1991
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 18 (2) , 195-198
- https://doi.org/10.1029/91gl00207
Abstract
The early opening of the Red Sea rift is accompanied by tholeiitic magmatism stretching at least 1700 km along the western coast of Saudi Arabia, and consisting of thick gabbroic dykes, dense dyke swarms, plutons and discrete lava flows. Whereas the conventional K‐Ar measurements have furnished a wide variety of ages, the 40Ar/39Ar analyses presented here (giving 17 plateau‐ages) display a pronounced cluster of ages from 24 to 21 Ma. Such a short‐lived magmatic event has been suggested for other continental rifts.This publication has 14 references indexed in Scilit:
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