Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5784825 | Precambrian Research | 2017 | 61 Pages |
Abstract
The data support the model suggesting amalgamation between the AGC and BGB terranes at ca. 3.23Â Ga. In addition, they require crustal thickening in the AGC terrane at ca. 3.15Â Ga, causing Barrovian-type metamorphism in the DSS and granulite-facies metamorphism in the Luboya-Kubuta Terrane. Low-P granulite-facies metamorphism at ca. 2.99Â Ga is most likely related to crustal extension during the onset of Pongola Basin rifting, causing mantle upwelling, mafic magmatism, and heat transfer from the mantle into the thinned crust.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Valby van Schijndel, Gary Stevens, Armin Zeh, Dirk Frei, Cristiano Lana,