25th Himalaya-Karakoram-Tibet Workshop: San Francisco 2010 : Program and Extended AbstractsNational Science Foundation, San Francisco State University, 2010 - 23 pages |
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Page A-72
... zircon rims , with a weighted mean age of 24.4 Ma ( Figure 2 ; Hassett and Leech , 2007 ) . The Renbu dome has relict U - Pb zircon core ages ranging from Late Archean to Late Triassic ( 2.5 Ga to 200 Ma ) and Late Eocene to Late ...
... zircon rims , with a weighted mean age of 24.4 Ma ( Figure 2 ; Hassett and Leech , 2007 ) . The Renbu dome has relict U - Pb zircon core ages ranging from Late Archean to Late Triassic ( 2.5 Ga to 200 Ma ) and Late Eocene to Late ...
Page A-195
... Zircon Ages and Lower Paleozoic Signatures from Leucosomes of the Namche Migmatites , Everest Area , Nepal Himalaya Bishal N. Upreti1 , George E. Gehrels ?, Santa M. Rai1 , Masaru Yoshida3 1,3 ' Department of Geology , Tribhuvan ...
... Zircon Ages and Lower Paleozoic Signatures from Leucosomes of the Namche Migmatites , Everest Area , Nepal Himalaya Bishal N. Upreti1 , George E. Gehrels ?, Santa M. Rai1 , Masaru Yoshida3 1,3 ' Department of Geology , Tribhuvan ...
Page A-206
... zircon He data span a more limited range of relief ( 1100 - 2000 m ) . AFT ages are systematically younger at lower elevations and range from 15 - 56.5 Ma . In contrast , zircon ( U - Th ) / He ages range from 7.3 - 14.3 Ma . Thus , for ...
... zircon He data span a more limited range of relief ( 1100 - 2000 m ) . AFT ages are systematically younger at lower elevations and range from 15 - 56.5 Ma . In contrast , zircon ( U - Th ) / He ages range from 7.3 - 14.3 Ma . Thus , for ...
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25th Himalaya-Karakoram-Tibet Workshop ages belt beneath Bhutan Cenozoic Central Tibet channel flow China Cite constraints continental crustal deformation Department of Earth detrital dome Earth Sciences earthquakes eastern erosion evolution exhumation Figure folds foreland Formation Geochronology Geol Geophys Geophysics Geosciences glacial glacier gneiss granite Greater Himalayan Sequence Himalaya Himalaya-Karakoram-Tibet Workshop San Implications INDEPTH India Indian plate indicate Indus isotopic June Kunlun Leech Leo Pargil Lesser Himalayan leucogranites Lhasa lithosphere lower crust Main Central Thrust mantle margin metamorphic migmatites Miocene Moho Nepal normal faults northern Open-File Report ophiolitic orogen Pakistan paleomagnetic Proceedings Qaidam Qaidam Basin Qiangtang Quaternary range region River rocks samples sedimentary sediments seismic Shan shortening southern Tibet strain strike-slip structure subduction surface suture zone tectonic temperature terrane Tethyan Tibet Tibetan Plateau U-Pb U.S. Geological Survey University uplift upper valley velocity western Workshop San Francisco Zanskar zircon