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Murty, M. S.
- Myrmekite from the Charnockite Series of Amaravathi, Guntur District, Andhra Pradesh
Abstract Views :207 |
PDF Views:2
Authors
A. Ramaswamy
1,
M. S. Murty
1
Affiliations
1 Department of Geology, S. V. University, Tirupati, IN
1 Department of Geology, S. V. University, Tirupati, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 13, No 3 (1972), Pagination: 273-276Abstract
A detailed description of myrmekite is furnished and its origin discussed in the light of the existing theories. Myrmekite is believed to be formed by exsolution, deriving both the components - quartz and plagioclase, which are held in solid solution in the form of albite and CaAl2, Si6O16 in po:ash felspar. Myrmekite in norite is presumed to be formed due to the breakdown of anorthite molecule of the plagioclase releasing the required silica, thus making the plagioclase less basic than its parent. The granulite facies (charnockite environmental) conditions seem to be ideal for the formation of myrmekite by exsolution process.- Lithology and Structure of the Eastern Ghats of Visakhapatnam, Andhra Pradesh
Abstract Views :278 |
PDF Views:2
Authors
A. Sriramadas
1,
M. S. Murty
1
Affiliations
1 Department of Geology, Andhra University, Waltair, IN
1 Department of Geology, Andhra University, Waltair, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 16, No 2 (1975), Pagination: 188-192Abstract
An area of about four hundred and eighty square kilometres in Visakhapatnam, consisting of khondalites, charnockites and granites, was geologically mapped. The trend of the formations varies from NE-SW through E-W to NW-SE. This trend neither conforms with NE-SW trend of the Eastern Ghats nor with the NW-SE trend of the hinterland of the Eastern Ghats between the Godavari and Mahanadi rivers. The change in the trend pattern is inferred to be due to the area being located in an intensely folded and faulted region in the eastern margin of the Eastern Ghats.- Sodalite-Cancrinite-Fluorite Syenite from the Granitic Terrain of Podili, Prakasam District, Andhra Pradesh
Abstract Views :212 |
PDF Views:120
Authors
Affiliations
1 Department of Geology, S. V. University, Tirupati, Andhra Pradesh, IN
1 Department of Geology, S. V. University, Tirupati, Andhra Pradesh, IN