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 72
... EMPLACEMENT OF PEGMATITES IN THE BUCHARA AREA OF NORTHEASTERN RAJASTHAN U. BOSE Geological Survey of India ABSTRACT A wide tract of pegmatite bodies occurs around the Buchara Lake in the districts of Sikar and Jaipur in northeastern ...
... EMPLACEMENT OF PEGMATITES IN THE BUCHARA AREA OF NORTHEASTERN RAJASTHAN U. BOSE Geological Survey of India ABSTRACT A wide tract of pegmatite bodies occurs around the Buchara Lake in the districts of Sikar and Jaipur in northeastern ...
Page 80
... Emplacement of tabular pegmatites Tabular pegmatites constitute the most predo- minant morphological group in the present area intruding all the other pegmatites . They invariably follow the planar surfaces of the country rocks ...
... Emplacement of tabular pegmatites Tabular pegmatites constitute the most predo- minant morphological group in the present area intruding all the other pegmatites . They invariably follow the planar surfaces of the country rocks ...
Page 81
... Emplacement of these veins were , therefore , pre- or syn - tectonic , which have been subsequently folded in conformity with the country rocks . Sequence of pegmatite emplacement in relation to tectonism Before drawing a chronological ...
... Emplacement of these veins were , therefore , pre- or syn - tectonic , which have been subsequently folded in conformity with the country rocks . Sequence of pegmatite emplacement in relation to tectonism Before drawing a chronological ...
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