A note on geophysical mapping of the granulite terranes surrounding the Godavari Basin

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Authors:Ram Babu, H. V.; Lakshmi, Prasanti
Author Affiliations:Primary:
National Geophysical Research Institute, Hyderabad, India
Volume Title:Journal of the Geological Society of India
Source:Journal of the Geological Society of India, 65(2), p.211-216. Publisher: Geological Society of India, Bangalore, India. ISSN: 0016-7622
Publication Date:2005
Note:In English. 9 refs.; illus., incl. geol. sketch map
Summary:Regional gravity and aeromagnetic data over the Godavari basin and the adjoining region show distinct signatures of granulite terranes of Karimnagar and Bhopalpatnam area. The Karimnagar Granulite Terrane (KGT) showing up as a thin (about 10-15 km wide) north-south belt near Khammam, widens to about 100 km near Warangal and extends through Karimnagar, Adilabad and beyond up to Wardha in a NW-SE direction, parallel to the Godavari basin. The Bhopalpatnam Granulite Terrane (BGT) appears as a 10 km wide linear belt on the eastern side of the basin. The Eastern Ghat Granulite Terrane (EGT), which occupies a vast area along the east coast of India, also possesses similar characteristic features within the study area. About 15 km east of Hyderabad, a north-south linear belt showing characteristic signatures of granulites could be identified from the aeromagnetic image. This belt, named as the Hyderabad Granulite Terrane (HGT) is about 25 km wide and joins the KGT near Karimnagar. These granulite terranes show higher values of magnetic susceptibility and density (except that of HGT). [G.L.B.]
Sections:Petrology; Physical properties of rocks and minerals
Subsections:Metamorphism: regional, dynamic
Subjects:Bouguer anomalies; Geophysical methods; Geophysical surveys; Granulites; Gravity anomalies; Gravity methods; Magnetic methods; Mapping; Metamorphic rocks; Surveys; Terranes; Andhra Pradesh India; Asia; India; Indian Peninsula; Krishna-Godavari Basin
Coordinates:N170000 N200000 E0820000 E0780000
Abstract Numbers:05M/636
Record ID:2005051749
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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