Records of the Geological Survey of India, Volume 112, Part 7The Survey, 1982 - 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 65
... grade ( Range of temperature approximately 500 ° C to 700 ° C ) Staurolite in , cordierite in , chloritoid out , chlorite out Greenschist facies group Almandine forms at high temperature range of low grade metamorphism ( Biotite ...
... grade ( Range of temperature approximately 500 ° C to 700 ° C ) Staurolite in , cordierite in , chloritoid out , chlorite out Greenschist facies group Almandine forms at high temperature range of low grade metamorphism ( Biotite ...
Page 66
... grade to high grade ( Low pressure ) dent on the composition of parental rocks rather than on the intensity of deformation . It is observed that , the Alwar psammites are metamorphosed at compara- tively higher grades than the pelites ...
... grade to high grade ( Low pressure ) dent on the composition of parental rocks rather than on the intensity of deformation . It is observed that , the Alwar psammites are metamorphosed at compara- tively higher grades than the pelites ...
Page 68
... grade rocks is sericitic and occur as shreds . Develop- ment of biotite in low grade rocks can be explained at the expense of muscovite and chlorite . Garnet ( alman- dine ) occurs as porphyroblasts , which are sometimes flattened ...
... grade rocks is sericitic and occur as shreds . Develop- ment of biotite in low grade rocks can be explained at the expense of muscovite and chlorite . Garnet ( alman- dine ) occurs as porphyroblasts , which are sometimes flattened ...
Contents
Coastal geomorphology of Bhavnagar Gujarat India O | 1 |
Sediments of river Mendhaan admixture of humid and arid epoch | 11 |
CONTENTS | 16 |
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Ajabgarh Group albite Alwar Group Aravalli Aund axial Banded Gneissic Complex Bari Sadri basin Bayana beds Berach Granite Bhadesar Bhavnagar biotite Buchara Bundelkhand Gneiss calcite chert chlorite colour conglomerate country rocks cross-bedding Delhi Delhi Supergroup deposits district dolomite east eastern emplacement epidote facies fault felsite felspar felspathic ferruginous folds foliation fractures Geol Geological Survey geosynclinal cycle Gneiss grade grains of quartz granite porphyry grey Gujarat hornblende intrusive Jahaj Jaipur Jogipura Formation Khardeola Khareri Khetri Kushalgarh Kutch limestone magmatic matrix metamorphism metasediments mica schist microcline migmatites mineralisation minerals muscovite NE-SW Nithar northeastern Rajasthan occur oligoclase oolites orthoclase pebbles pegmatite phase phenoclasts phyllites places Pre-Aravalli pre-Delhi quartz quartz felsite quartzite Raialo Rajasthan ripple marks Salenia sand sandstone schist sedimentary sedimentation seen sequence sericite shale shows siliceous Sita slates specimen stratigraphic Supergroup surface Surv Survey of India tectonic terrace thick trend unconformity veins Vindhyan western zone