Swamy, V and Iyer, GVA and Menon, AG (1997) Metamorphic-metasomatic fluids and Al, Si order/disorder of K-rich alkali feldspars from southern Indian high grade terrain. In: Journal of the Geological Society of India, 50 (6). pp. 681-690.
Full text not available from this repository. (Request a copy)Abstract
The structural state of K-feldspars in the quartzofeldspathic gneisses, charnockites, metapelites and pegmatites from the southern Kamataka, northern Tamil Nadu and southern Kerala high-grade regions of southern India has been characterized using petrographic and powder X-ray diffraction methods. The observed distribution pattern of structural state with a preponderance of disordered K-feldspar polymorphs in granulites compared to the ordered microclines in the amphibolite facies rocks is interpreted to reflect principally the varying H2O contents in the metamorphic-metasomatic fluids across metamorphic grade. The K-feldspars in the pegmatites of granitic derivation and in a pegmatite of inferred metamorphic origin also point to the important role of aqueous fluids in their structural state.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of the Geological Society of India |
| Publisher: | Springer |
| Additional Information: | Copyright of this article belongs to Springer. |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
| Date Deposited: | 29 Aug 2011 09:17 |
| Last Modified: | 29 Aug 2011 09:17 |
| URI: | http://eprints.iisc.ac.in/id/eprint/38300 |
Actions (login required)
 |
View Item |
