Bibliographic Details
| Title: |
Magnetic anomalies and basement structure of the Eastern Ghats Mobile Belt and southwest Krishna basin in parts of Prakasam District, Andhra Pradesh. |
| Authors: |
Swamy, K. V.1 baalukandadai@yahoo.co.in, Rao, P. Rama2, Murthy, I. V. Radhakrishna2 |
| Source: |
Current Science (00113891). 1/25/2008, Vol. 94 Issue 2, p262-268. 7p. 3 Graphs, 3 Maps. |
| Subjects: |
Magnetic anomalies, Geomagnetic maps, Charnockite |
| Geographic Terms: |
Eastern Ghats (India), India |
| Abstract: |
A regional magnetic survey over a part of the Eastern Ghats Mobile Belt (EGMB) and southwest Krishna basin around Ongole Prakasam District, Andhra Pradesh (between 15° and 16°N lat. and 79 °45′ and 80°48′E long.) was carried out. The magnetic anomalies are generally noisy with no easily identifiable trends, particularly north of 15°21′N lat. Inversion of upward continued anomalies brought out the magnetic basement constituting the charnockites located at an average depth of 3 km. The basement is overlain by the khondalitic group of rocks and exhibits horst-graben-like structures developed due to faulting. The study shows that the charnockites extend south of Ongole also, and attributes the seismicity of the region to the faulted charnockitic basement. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
