Records of the Geological Survey of India, Volume 121, Part 1The Survey, 1991 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 13
... dykes along with their compositional variation is important in understanding the evolution of the Earth's curst . In India clusters of mafic dykes occur in several Precambrian terrains in East , North and South India . K - Ar age data ...
... dykes along with their compositional variation is important in understanding the evolution of the Earth's curst . In India clusters of mafic dykes occur in several Precambrian terrains in East , North and South India . K - Ar age data ...
Page 37
... dykes . Three prominent lineament and dyke systems was delineated on the Landsat imagery , oriented NE - SW , NW - SE and E - W , conforming to the regional structural trends . The straight course of Palar river in Vaniyambodi ...
... dykes . Three prominent lineament and dyke systems was delineated on the Landsat imagery , oriented NE - SW , NW - SE and E - W , conforming to the regional structural trends . The straight course of Palar river in Vaniyambodi ...
Page 245
... dykes have been brought out in the course of systematic geological mapping . Petrological studies carried out earlier have revealed that the dykes belong to three generations . R. V. G. Nair carried out the work . An area of 300 sq km ...
... dykes have been brought out in the course of systematic geological mapping . Petrological studies carried out earlier have revealed that the dykes belong to three generations . R. V. G. Nair carried out the work . An area of 300 sq km ...
Contents
INTRODUCTION | 1 |
AIRBORNE MINERAL SURVEYS EXPLORATION WING | 44 |
OPERATION BIHAR | 135 |
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alignment analysis Andhra Pradesh anomaly arca assess Asstt bands basalt basin Bihar biotite block boreholes carried chalcopyrite charnockite chemical clay coal coalfield comprising Construction stage covering an area Deccan Trap delineated deposits depth district DIVISION Director DIVISION-I Divn drill cores dykes Economic Geology evaluation exploration exposed field season Formation fossils geochemical geological investigations geological mapping Geologist Jr GEOLOGY DIVISION geomorphological geophysical surveys Geophysicist geotechnical investigation Ghosh gneiss Gondwana granite granite gneiss Group indicated investigation was taken Karnataka km was covered Kumar laboratory limestone located logging magnetic Maharashtra migmatites mineral mineralisation occur Orissa pegmatite Petrology phyllite power house programme proposed quartz quartzite Quaternary Rajasthan Regional Geology river rock types S/Shri samples were collected sandstone scale schist schist belt seams sediments sequence shale Shri Singh Siwalik spillway sq km Srivastava strike length studies suggested sulphide surface thickness toposheet trending tunnel upto Uttar Pradesh