Records of the Geological Survey of India, Volume 112, Part 5The Survey, 1979 - 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 43
... structure , presence of spheroidal weathering feature and interlocking texture suggest them to be of igneous origin . Genetically the ore is both primary and secondary , where the latter is p edominant , formed by the process of ...
... structure , presence of spheroidal weathering feature and interlocking texture suggest them to be of igneous origin . Genetically the ore is both primary and secondary , where the latter is p edominant , formed by the process of ...
Page 69
... structure . Hence these are considered subsequent in age to the general folding of the Dharwars . In the area mapped there are four dolerites , each varying in thickness from 15 to 30 m ; out of which , one is trending N - S and the ...
... structure . Hence these are considered subsequent in age to the general folding of the Dharwars . In the area mapped there are four dolerites , each varying in thickness from 15 to 30 m ; out of which , one is trending N - S and the ...
Page
... STRUCTURE OF THE NILGIRI HILLS The Nilgiri hills are essentially composed of charnockitic rocks with basic ... structural analysis bears out an overall synformal structute ( Fig . ) and within this . a structural basin is deciphered ...
... STRUCTURE OF THE NILGIRI HILLS The Nilgiri hills are essentially composed of charnockitic rocks with basic ... structural analysis bears out an overall synformal structute ( Fig . ) and within this . a structural basin is deciphered ...
Contents
RECORDS | 1 |
Petrology of the Ultramafic Rocks of Chalk Hills Salem Tamil Nadu | 15 |
Studies on the Dolerite Dykes of Hunsur Periyapatna area Mysore District | 35 |
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amphibole aquifers Auroville banded ferruginous barytes beds biotite borehole carbonate Chalk Hills charnockitic chemical chert chert/quartzite chlorite clay clinopyroxene colour Cretaceous Cuddapah basin Dharwar diopside dips district dolerite dolomite drilled dunites dykes East lode electrical log faults feldspars formation Gadag Geol Surv Ind GEOLOGICAL SURVEY geomorphic gms/tonne gneisses goethite gold grains granite granulites Groundwater hematite hornblende hornblendite igneous indicates iron Kabuliyatkatti Karnataka Kerala lapilli laterite layers limestone magma magnesite Mangampeta mapping metamorphism metres minerals Murthy Mysore Nilgiri occur olivine outcrops peridotites plagioclase present pyroxene pyroxenite quartz quartzite Quilon range Rec Geol Surv Red Oxide Salem samples sands sandstone Sandur schist sedimentary sediments serpentinite shear zone shonkinite silica strike length studies surface Survey of India taluk Tamil Nadu tectonic Tertiary thickness tonnes trend ultrabasic ultramafic bodies ultramafic rocks Unpublished GSI Report upto a depth varies vein barytes Vempalle Warkalli