Geology and Geodynamic Evolution of the Himalayan Collision Zone, Volume 18, Parts 1-2Kewal K. Sharma |
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Page 286
... mantle fractionates derived from tholeiitic magma of upper mantle source . Rb / Sr ratio of < 0.1 ( Fig.10 ) suggest that the magma was generated at a depth of 20-30 km ( Condie , 1973 , 1976 ) . The metaluminous nature of the ...
... mantle fractionates derived from tholeiitic magma of upper mantle source . Rb / Sr ratio of < 0.1 ( Fig.10 ) suggest that the magma was generated at a depth of 20-30 km ( Condie , 1973 , 1976 ) . The metaluminous nature of the ...
Page 390
... mantle ) have been delineated at several places in Karakorum , Pamir mountains and S Tien - Shan region along Soviet ... mantle . In order to explain the observed gravity field , density contrast of the order of 0.28 to 0.30 g / cu cm ...
... mantle ) have been delineated at several places in Karakorum , Pamir mountains and S Tien - Shan region along Soviet ... mantle . In order to explain the observed gravity field , density contrast of the order of 0.28 to 0.30 g / cu cm ...
Page 399
... mantle . A reasonable good fit for the model was obtained for a density contrast of -0.32 g / cu cm between the crust and the mantle . There is some discrepancy ( of the order of 50 mGal ) , however , between curve 1 and the observed ...
... mantle . A reasonable good fit for the model was obtained for a density contrast of -0.32 g / cu cm between the crust and the mantle . There is some discrepancy ( of the order of 50 mGal ) , however , between curve 1 and the observed ...
Contents
LHASA SECTOR | 193 |
Regional framework and tectonics of the Yarlung | 221 |
Sedimentology of trencharc sediments and | 237 |
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Acharyya Andaman anomaly Assam basalt basin blueschist Bouguer chert continental Cretaceous crustal crystalline cumulate dunite earthquake Eocene facies fault flysch Formation fossils gabbro Gangdise GANSSER Geodynamic Geol Geology Geophy Gondwana granite greywacke harzburgite high-P Himalaya Himalayan collision zone India Indian plate Indus Suture Indus-Tsangpo Suture island arc Kashmir Klootwijk Kohistan Kumaun Ladakh Lhasa Lhasa block limestone located Lohit magmatic mantle margin massif mega-belt melange metamorphism Mishmi Moho Molnar Naga Hills Nandy Nanga Parbat northern NW Himalaya obducted occur oceanic crust ophiolite ophiolite melange Pakistan Palaeomagnetic pillow lava pole positions pyroxene Qilian Qing-Zang plateau Qinghai-Xizang Plateau radiolarian region samples sandstone schists sector sedimentary sediments seismicity sequence Shan Sharma structure subduction suture zone tectonic tectonites Tectonophysics Terrane Tertiary Tethyan Tethys thrust Tibet TiO2 trench turbidite Triassic turbidite ultramafic upper Verma volcanic rocks Xigaze Xigaze Group Xizang Yarlung Zangbo ophiolite