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 34
... Thin impersistent chert bands are exposed at a few places . A thin band of chert , interstratified with limestone and not exceeding a metre in thickness , occurs northwest of Pandoli Amonki in the shales . This chert is green , massive ...
... Thin impersistent chert bands are exposed at a few places . A thin band of chert , interstratified with limestone and not exceeding a metre in thickness , occurs northwest of Pandoli Amonki in the shales . This chert is green , massive ...
Page 36
... thin sections . A thin section shows that it consists of orthoclase , oligoclase , albite , biotite , riebeckite and epidote . Accessory minerals are clino- zoisite , apatite , magnetite , quartz , calcite , chlorite and scapolite ...
... thin sections . A thin section shows that it consists of orthoclase , oligoclase , albite , biotite , riebeckite and epidote . Accessory minerals are clino- zoisite , apatite , magnetite , quartz , calcite , chlorite and scapolite ...
Page 54
... thin section , it shows sub - angular to perfectly rounded quartz grains set in a matrix of fine quartz , sericite , muscovite and altered felspars . Iron oxide is abundant , either coating the grain boundaries of quartz or in cubic ...
... thin section , it shows sub - angular to perfectly rounded quartz grains set in a matrix of fine quartz , sericite , muscovite and altered felspars . Iron oxide is abundant , either coating the grain boundaries of quartz or in cubic ...
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