Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

V. D. Mamgain ¹, B. R. Jagannatha Rao ¹

Affiliations
1 Geological Survey of India, Calcutta, IN

Abstract

The paper gives an account of the Orbitolines found in the limestone intercalations associated with volcanic rocks of Dras, Jammu and Kashmir state. One new genus, with characters intermediate between Orbitolina d'Orbigny and Iragia Henson along with three species of Orbilolina and ?Birbalina are recorded. The Foraminifera indicate a Barremian to Aptian age for the limestone intercalations and associated volcanic rocks.

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V. D. Mamgain ¹, M. V. A. Sastry ¹, J. V. Subbaraman ²

Affiliations
1 Geological Survey of India, Calcutta, IN
2 Dalmia Cement (Bharat) Ltd., Dalmiapuram, IN

Abstract

No Abstract.

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J. K. Pati ¹, V. D. Mamgain ¹

Affiliations
1 STM-I, Op. U.P., Geological Survey of India, Lucknow - 226 024, IN

Abstract

Orbicular structures from the Bundelkhand Granitoid complex in Banda District, Uttar Pradesh are reported for the first time.

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J. K. Pati ¹, S. Raju ¹, V. D. Mamgain ¹, Ravi Shanker ¹

Affiliations
1 Geological Survey of India (NR), Aliganj, Lucknow-226 024, IN

Abstract

Geological mapping in parts of Bundelkhand Granitoid Complex (BGC) reveals a number of E-W trending shear zones marked by mylonites. Synkinematic fluid activity along these shear zones is conspicuous. Anomalous gold values in the range of 5 and 1000 ppb in BGC is recorded against a background value of l to 2 ppb in most Precambrian granitoids.

Keywords

Economic Geology, Gold, Granites, Precambrian, Bundelkhand, Central India.

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