Records of the Geological Survey of India, Volume 112, Part 8The Survey, 1977 - 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. |
From inside the book
Results 1-3 of 10
Page 10
... fragments of porphyry are found within the rhyolite . Under the microscope it consists of very fine- grained groundmass with microphenocrysts of quartz and a little felspar and magnetite . The rock consists of angular fragments of ...
... fragments of porphyry are found within the rhyolite . Under the microscope it consists of very fine- grained groundmass with microphenocrysts of quartz and a little felspar and magnetite . The rock consists of angular fragments of ...
Page 33
... fragments , and crystals and fragments of quartz , plagioclase and K - felspars in a microcrystalline ground- mass ( Pl . 1 , Figs . 3 and 4 ) . The rock frag- ments are of andesite , tuff , quartz - porphyry and chert . Glass fragments ...
... fragments , and crystals and fragments of quartz , plagioclase and K - felspars in a microcrystalline ground- mass ( Pl . 1 , Figs . 3 and 4 ) . The rock frag- ments are of andesite , tuff , quartz - porphyry and chert . Glass fragments ...
Page 34
... fragments and felspar phenocrysts . Under the microscope , it is a typical crystal - vitric tuff , consisting of mine- rals , rocks and their fragments in a ground- mass of ash . The ash particles are crescent- shaped , horn - like and ...
... fragments and felspar phenocrysts . Under the microscope , it is a typical crystal - vitric tuff , consisting of mine- rals , rocks and their fragments in a ground- mass of ash . The ash particles are crescent- shaped , horn - like and ...
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 |
14 other sections not shown
Other editions - View all
Common terms and phrases
anomaly bands basin Bhander biotite calcareous Chail chemical comprises conglomerate Deoban belt Deoban Group depth Dharamsala Dharmigad district dunite dykes exposed fault fauna felspar folds foliation 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 mineralisation 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