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Authors
Affiliations
1 Department of Geology, Osmania University, Hyderabad 500 007, IN
2 Central Ground Water Board, Southern Region, Hyderabad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 35, No 4 (1990), Pagination: 341-356
Abstract
The alkali syenites of Podili represent a mildly undersaturated nepheline nonnative microsyenites (NNMS) and quartz nonnative microsyenites (QNMS). All the microsyenites have developed nonnative acmite and are totally free from normative hypersthene. In contrast, the quartz syenites always carry normative hypersthene and are invariably devoid of normative acmite.
In the variation diagrams. the PodiIi syenites form distinct petrochemical trends indicating their consanguineous relationship. A dichotomous differentiation trend is discernible.
Keywords
Alkali Syenite, Alkaline Province, Andhra Pradesh, Geochemistry, Petrology.
