Kuwait-University-Journal-of-Law-header
Search
Kuwait Journal of Science

Previous Issues

Advance Search
Year : From To Vol
Issue Discipline:
Author

Volume :12 Issue : 2 1985      Add To Cart                                                                    Download

Some textural patterns and their bearing on the origin of the granitic rocks of the Aswan region, south Egypt

Auther : MOSTAFA M. SOLIMAN

Department of Geology, Faculty of Science, University of Zagazig, Zagazig, Egypt

 

ABSTRACT

 

The massif of the Aswan region consists of granitic rocks of Precambrian age, the earlier phases of which are more mafic, coarse grained, and sometimes show porphyritic and rapakivi textures. The K-feldspar megacrysts show intensive perthitization of exolution origin and occur in more than one generation, sometimes replacing each other. The K-feldspar includes oriented plagioclase crystals that lie parallel to the re-entrant angles at the Carlsbad twinning planes of the K-feldspar megacrysts. The plagioclase megacrysts also contain oriented biotite, magnetite and apatite inclusions that are concentrated in the cores and between the cores and their outer rims. Occasionally these included crystals lie parallel to the re-entrant angles at the Carlsbad twinning planes of the plagioclase megacrysts. These features suggest crystallization of the K-feldspar and plagioclase megacrysts from silicate melts and lend some support to the magmatic hypothesis of the Aswan batholith

Kuwait Journal of Science
Journal of Law

You are Visitor No.

55170

Journal of Law
Journal of Law
Tell your friendsJournal of Law
Journal of Law

Last Updated

Jun 19, 2012

Journal of Law
Journal of Law
Journal of Law

Please enter your email Here to receive our news

Journal of Law