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 22
... green coloured , coarse - grained rock , essentially com- posed of large prismatic grains of green amphi- bole , some pyroxene , relic olivine , feldspar and opaque ores in a rather pegmatitic than hypidomorphic ass- emblage , While ...
... green coloured , coarse - grained rock , essentially com- posed of large prismatic grains of green amphi- bole , some pyroxene , relic olivine , feldspar and opaque ores in a rather pegmatitic than hypidomorphic ass- emblage , While ...
Page 35
... Green Yellowish Green Brownish Green Green Hypersthene shows generally straight extinction but sometimes inclined extinction to a few degrees .. The extinction angle of hornblende varies from 0 ° to 30 ° . An interesting feature in some ...
... Green Yellowish Green Brownish Green Green Hypersthene shows generally straight extinction but sometimes inclined extinction to a few degrees .. The extinction angle of hornblende varies from 0 ° to 30 ° . An interesting feature in some ...
Page 35
... green biotite . In these , some contain also olivine which is clouded but does not have any corona ( PI 3 , Fig 2 ) .. ( D ) Dolerite These are ophitic in texture and consist of clino- pyroxene and plagioclase feldspar ( An62 ) , with ...
... green biotite . In these , some contain also olivine which is clouded but does not have any corona ( PI 3 , Fig 2 ) .. ( D ) Dolerite These are ophitic in texture and consist of clino- pyroxene and plagioclase feldspar ( An62 ) , with ...
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