Journal of Himalayan Geology, Volumes 1-2Wadia Institute of Himalayan Geology, 1990 - Geology |
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Page 41
... plagioclase laths in these rocks occur in groundmass or as inclusions in K - feldspar ( Fig . 3B ) . Sometimes , plagioclase also occurs as large phenocrysts and show inclusions of quartz and biotite ( Fig . 3C ) . They generally show ...
... plagioclase laths in these rocks occur in groundmass or as inclusions in K - feldspar ( Fig . 3B ) . Sometimes , plagioclase also occurs as large phenocrysts and show inclusions of quartz and biotite ( Fig . 3C ) . They generally show ...
Page 65
... plagioclase , biotite and muscovite . Among the accessory minerals , zircon , garnet , apatite and iron oxides are significant . Mineralogically , the leucosomes are made up of quartz and feldspar , whereas melanosomes are made up of ...
... plagioclase , biotite and muscovite . Among the accessory minerals , zircon , garnet , apatite and iron oxides are significant . Mineralogically , the leucosomes are made up of quartz and feldspar , whereas melanosomes are made up of ...
Page 81
... plagioclase and epidote ; alters to chlorite in the peripheral part of the crystal , shows post - crystalline deformation as evidenced by deformed cleavage ) , biotite and sphene ( occurs as idioblstic crystals ) . Table 1. Model ...
... plagioclase and epidote ; alters to chlorite in the peripheral part of the crystal , shows post - crystalline deformation as evidenced by deformed cleavage ) , biotite and sphene ( occurs as idioblstic crystals ) . Table 1. Model ...
Contents
RAJESH SHARMA B K NAYAK Ore petrology and origin of leadzinc deposits in great limestone | 103 |
R K MAZARI T N BAGATI Postcollision graben development in the Spiti valley Himachal | 111 |
P Dobhal SURENDAR KUMAR A K MUNDEPI Mass wasting and slope analysis of Chhota | 119 |
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amphibolite Amritpur Amritpur Granite basin beds biotite block chlorite clasts conglomerate Cretaceous Crystallines deformation deposits developed dolerite dolomite earthquakes eastern Eocene evaporites facies fault feldspars folds fossils Garhwal Garhwal Himalaya garnet Geol glacial glacier gneisses Gondwana grained granitoids Group Himachal Pradesh Himalaya Himalayan Geology hornblende hornblende schists India Indian plate indicate Indus Suture Institute of Himalayan Jour Journal of Himalayan K-feldspar Krol Belt Kumar Kumaun Ladakh Lesser Himalaya limestone lineaments lithology lower magmatic margin metamorphism Middle Siwalik migmatites minerals Molnar moraines muscovite Nayar observed occur ophiolitic Ophiolitic Melange Pakistan phase phyllite plagioclase plane Precambrian quartz quartzite Rawat region river rocks Salt Range samples sandstone schist sedimentary sediments sequence shale Sharma shear zones shows Shyok Singh Siwalik slope Spiti stratigraphic structure Subathu Subathu Formation subduction Surv Suture Zone syncline tectonic Tethyan Thakur thick Thrust trend Upper Siwalik valley volcanics Wadia Institute western Zanskar