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Srinivasan, T. P.
- Significance of Fayalite (+Quartz) Assemblage in Gokanakonda Syenite, Prakasam District, Andhra Pradesh
Abstract Views :182 |
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Authors
Affiliations
1 Department of Geology, Osmania University, Hyderabad 500 007, IN
2 National Geophysical Research Institute, Uppal, Hyderabad 500 039, IN
1 Department of Geology, Osmania University, Hyderabad 500 007, IN
2 National Geophysical Research Institute, Uppal, Hyderabad 500 039, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 36, No 2 (1990), Pagination: 143-153Abstract
The Fayalite syenites of Gokanakonda in Andhra Pradesh, India, are mineralogically divided into two types: (1) fayalite-clinopyroxene syenites (FC-syenites) and (2) fayalite-quartz syenites (FQ-syenites). The olivine composition ranges from Fa90-95 and the petrochemistry suggests their successive evolution in that order. The assemblage (fayalite+magnetite+quartz) in these syenites suggests a pressure of 11.5 kb and a temperature of 900°C under constant fo2.Keywords
Petrology (Igneous), Fayalite-Syenite, Prakasarn District, Andhra Pradesh.- Mineralogy and Textural Features of Settupalle Syenites, Prakasm District, Andhra Pradesh
Abstract Views :188 |
PDF Views:3
Authors
Affiliations
1 Bhavan's New Science College, Narayanguda, Hyderabad - 500 029, IN
2 Department of Geology, Osmania University, Hyderabad-500 007, IN
1 Bhavan's New Science College, Narayanguda, Hyderabad - 500 029, IN
2 Department of Geology, Osmania University, Hyderabad-500 007, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 45, No 2 (1995), Pagination: 137-144Abstract
The Settupalle igneous complex is characterised by syenitic variants with distinct mineralogic assemblages. The variable perthitic patterns, nature of plagioclase, fayalite-quartz assemblage in Settupalle syenites clearly suggest that the Settupalle igneous complex has evolved under fluctuating pressure and temperature conditions. The mineral chemistry of K-feldspar and plagioclase suggests that K-feldspar assemblage in these rocks indicates their subsolvus nature. The probable crystallization sequence of rocks is fayalite clinopyroxene syenite (FC-Syenite) - fayalite quartz syenite (FQ-Syenite)-hornblende syenite - quartz syenite - nepheline syenite in that order.Keywords
Mineralogy, Syenites, Settupalle, Prakasarn District, Andra Pradesh.- On Extensions of Measures
Abstract Views :168 |
PDF Views:1
Authors
Affiliations
1 Tata Institute of Fundamental Research, Bombay, IN
1 Tata Institute of Fundamental Research, Bombay, IN
Source
The Journal of the Indian Mathematical Society, Vol 19, No 1 (1955), Pagination: 31-60Abstract
A classical approach due to Caratheodory serves to obtain a measure on a σ-algebra of sets starting from an 'outer measure'.- On Measurable Sets
Abstract Views :142 |
PDF Views:0
Authors
Affiliations
1 Tata Institute of Fundamental Research, Bombay, IN
1 Tata Institute of Fundamental Research, Bombay, IN