Records of the Geological Survey of India, Volume 128, Part 3The Survey, 1995 - 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
... quartz mica schist , quartz mica - schist , quartzite , calc - silicate rocks and metabasites . These are intruded by a number of pegmatites and quartz veins . Locally minor folds are developed in composite gneiss near Sindurpur in the ...
... quartz mica schist , quartz mica - schist , quartzite , calc - silicate rocks and metabasites . These are intruded by a number of pegmatites and quartz veins . Locally minor folds are developed in composite gneiss near Sindurpur in the ...
Page 88
... quartz , sericite , rutile , opaque minerals , epidote and zoisite . It contains amygdules filled up with glass , and rimmed by opaques . At places , quartz grains are recrystallised ; sericite flakes are arranged in a pre- ferred ...
... quartz , sericite , rutile , opaque minerals , epidote and zoisite . It contains amygdules filled up with glass , and rimmed by opaques . At places , quartz grains are recrystallised ; sericite flakes are arranged in a pre- ferred ...
Page 89
... quartz . Occasion- ally finer grain size is noticed in the outer rim of the vesicles . The groundmass is very fine grained con- sisting of anhedral quartz , long prismatic grains of feldspar , secondary epidote - zoisite , devitrified ...
... quartz . Occasion- ally finer grain size is noticed in the outer rim of the vesicles . The groundmass is very fine grained con- sisting of anhedral quartz , long prismatic grains of feldspar , secondary epidote - zoisite , devitrified ...
Contents
Coastal studies and Neotectonics | 5 |
Chhotonagpur Gneiss East | 12 |
Investigation for copper and associated mineralisation | 18 |
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ABSTRACTS OF PROGRESS acid volcanic alkaline amphibolite Andaman anomaly apatite bands basemetal basin belt Bihar block boreholes carbonatite chert Chhotanagpur chlorite chromite clay coastal conglomerate covered CXF CXF Dalma Darjeeling depth Dhanjori DIST district drilling dykes Eastern Ghat Engineering Geology exploration EXTENDED ABSTRACTS FIELD SEASON fold foliation fractures geochemical GEOLOGICAL MAP GEOLOGICAL SURVEY Geologist geophysical GEOTECHNICAL INVESTIGATION gneiss Gondwana grade grained granite granite gneiss gravity Group of rocks Hydel INDEX indicate intersected intrusive Island laterite lineaments located magnetic metabasic mica schist minerals nala Nicobar occur Orissa OVERVIEW phyllite Plate potential Project Engineering Geology Purulia quartz quartz veins quartzite Quaternary regional river samples sand sandstone scale schist sector shale shear zone Sikkim Singhbhum Granite slope soil spillway sq km STAGE GEOTECHNICAL INVESTIGATION sulphide Sundargarh district SURVEY OF INDIA syenite terrain thick toposheet trending ultramafic upto WB-SIK-A West Bengal