Experimental simulation of prograde and retrograde reactions of osumilite-bearing assemblages: relevance to Mg-Al granulites

Basavalinag, B. and Ganesha, A. V. and Pasha, M. A. (2007) Experimental simulation of prograde and retrograde reactions of osumilite-bearing assemblages: relevance to Mg-Al granulites. Journal of the Geological Society of India, 70 (5). pp. 706-713. ISSN 0974-6889

Full text not available from this repository. (Request a copy)
Official URL: http://www.geosocindia.org/index.php/jgsi/article/...

Abstract

Experimental studies on the osumilite bearing assemblages relevance to Mg-A1 granulites were carried out and simulated certain retrograde reaction textures. Piston-Cylinder runs were conducted in the P-T range of 5 10 Kbars and 700 - 1100°C using bulk representing Al-SI rich portion of KMASH system. The phases obtained in the retrograde runs are low-Corrodorate osumilite, low Al-enstatite and melt. These phases distinctly differ from the high P-T minerals of prograde runs. It iS interesting to note that in retrograde runs the precurson phase phlogopite did not form, instead high temperature osumilite persists along with corroborates and enstatite at conditions as low as 700°C and 10 Kbar. The osumiliteo bearing etrograde reaction textures observed in run products corroborates well with that of Mg-A1 granulites of Eastern Ghat Mobile Belt.

Item Type: Article
Subjects: F Earth Science > Geology
Divisions: Department of > Earth Science
Depositing User: MUL SWAPNA user
Date Deposited: 07 Sep 2019 05:44
Last Modified: 07 Sep 2019 05:44
URI: http://eprints.uni-mysore.ac.in/id/eprint/7716

Actions (login required)

View Item View Item