Records of the Geological Survey of India, Volume 112, Part 8The Survey, 1981 - 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 9
... quartz present in it . Fine quartz in the groundmass shows flattening , whereas the big grains of quartz have irregular boundaries and have crys- tallised within the sericitised masses . The siltstone is completely changed due to many ...
... quartz present in it . Fine quartz in the groundmass shows flattening , whereas the big grains of quartz have irregular boundaries and have crys- tallised within the sericitised masses . The siltstone is completely changed due to many ...
Page 30
... quartz in a dark grey ground- mass . Near the contact the phenocrysts become smaller in size and the rock becomes richer in quartz . Felspar shows rapakivi texture . The pyra- midal ends of quartz - crystals , nearly perfect in form ...
... quartz in a dark grey ground- mass . Near the contact the phenocrysts become smaller in size and the rock becomes richer in quartz . Felspar shows rapakivi texture . The pyra- midal ends of quartz - crystals , nearly perfect in form ...
Page 108
... Quartz veins Arenaceous phyllite Quartzite - phyllite intercalations Quartzite and quartz schist Limonitised - quartz - sericite - chlorite schist Phyllitic slate and arenaceous phyllite Quartz - sericite phyllite The rocks show ...
... Quartz veins Arenaceous phyllite Quartzite - phyllite intercalations Quartzite and quartz schist Limonitised - quartz - sericite - chlorite schist Phyllitic slate and arenaceous phyllite Quartz - sericite phyllite The rocks show ...
Contents
RECORDS | 1 |
Geology Structure and Sulphide Mineralisation of Tosham District Bhiwani Haryana | 7 |
Geology and Geochemistry of Sulphide Mineralisation in Teejanwali Hill Mahendragarh | 17 |
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anomaly bands basin Bhander biotite calcareous Chail chemical chromite chromite mineralisation comprises conglomerate Deoban belt Deoban Group depth Dharamsala Dharmigad district dunite dykes exposed fault felspar folds geochemical Geol Geological Survey Giri glacial glacier gneiss granite grey groundmass Haryana Himalaya ignimbrites Jamuna Jaunsar Jutogh Jutogh Thrust Kaimur Kallar kankar kankar deposits Kulu limestone Lower Main Central Thrust Mandhali Formation mapping metres minerals Morar-Chakrata nala Narkasi Naugaon Nawagaon occur pebbles Permian phenocrysts phyllite plagioclase Plate-1 porphyroblastic porphyry Pradesh quartz quartzite Quaternary Raina Ramganga rhyolite river rocks Salnian samples sand Sandstone Sauli Formation schist schistose sediments sequence sericite Shale shear zone shelly bedded kankar silt siltstone Simla Siwalik slate slope soil Spiti stratigraphic structure Surv Survey of India Table-1 tectonic thickness tion Tiuni Tons valley Tosham hill Tr Tr trend tuff lavas Unpub Upper upto values Vindhyan volcanic Yamuna valley