naa a22 4500 510756565 CHVBK 20180411083124.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s12594-013-0158-8 doi (NATIONALLICENCE)springer-10.1007/s12594-013-0158-8 Structurally-controlled melt accumulation: Himalayan migmatites and related deformation — Dhauli Ganga valley, Garhwal Himalaya [Elektronische Daten] [A. Jain, Puneet Seth, Mrinal Shreshtha, P. Mukherjee, Keser Singh] In the uppermost parts of the Higher Himalayan Crystallines (HHC) of the Great Himalaya, widespread in situ partial melting of sillimanite+K-feldspar gneiss resulted in the formation of migmatite and resultant melt accumulation near the South Tibetan Detachment System (STDS) during various deformation events along the Dhauli Ganga valley in Garhwal. The oldest migmatite phase, designated as the Me1, parallels the main foliation Sm as the stromatite layers and concordant leucogranite bands. Younger melt phases Me2, Me3 and Me5 are recorded along small-scale ductile thrusts, extensional fabric and structureless patches, respectively. It is only the Me4 melting phase that is evidenced by large-scale melt migration along cross-cutting irregular veins. These were possible conduits for migration and accumulation of melt into larger leucogranite bodies like the Malari granite (19.0± 0.5 Ma). Geological Society of India, 2013 Higher Himalayan Crystallines nationallicence Migmatites nationallicence Dhauli Ganga valley nationallicence Jain A. CSIR-Central Building Research Institute, 247 667, Roorkee, India aut Seth Puneet Department of Earth Sciences, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut Shreshtha Mrinal Department of Earth Sciences, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut Mukherjee P. Wadia Institute of Himalayan Geology, 248 001, Dehra Dun, India aut Singh Keser Wadia Institute of Himalayan Geology, 248 001, Dehra Dun, India aut Journal of the Geological Society of India Springer India 82/4(2013-10-01), 313-318 0016-7622 82:4<313 2013 82 12594 https://doi.org/10.1007/s12594-013-0158-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12594-013-0158-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jain A. CSIR-Central Building Research Institute, 247 667, Roorkee, India aut NATIONALLICENCE 700 1- Seth Puneet Department of Earth Sciences, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut NATIONALLICENCE 700 1- Shreshtha Mrinal Department of Earth Sciences, Indian Institute of Technology Roorkee, 247667, Roorkee, India aut NATIONALLICENCE 700 1- Mukherjee P. Wadia Institute of Himalayan Geology, 248 001, Dehra Dun, India aut NATIONALLICENCE 700 1- Singh Keser Wadia Institute of Himalayan Geology, 248 001, Dehra Dun, India aut NATIONALLICENCE 773 0- Journal of the Geological Society of India Springer India 82/4(2013-10-01), 313-318 0016-7622 82:4<313 2013 82 12594 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer