Research Projects

In the region of the Main Central Thrust (MCT) and the Trans Himadri Fault in the north-eastern Kumaun Himalayas, Higher Himalayan Metamorphics are exposed as a thrust package. Metamorphic rocks are extensively visible in the Himalayas and were recorded by the first geologists exploring the range (Hooker 1854; Mallet 1874; Middlemiss1887). Earlier workers also recognized the connection between metamorphic rocks and the tectonic activity leading to thrust belts that developed during the Himalayan evolution (Pilgrim and West, 1928; Auden, 1937; Heim and Gansser1939). Himalayan metamorphic rocks, especially the rocks having the highest grade bared in the thrust belt and Greater Himalayan, are focused on through subsequent studies. These rocks currently are exposed along a trip in the geographic interior of the orogen, where they rest structurally above Lesser Himalayan sedimentary along with the MCT. Early Miocene granites having the origin of anatectic, Impose the Greater Himalayan Terrane, which is composed of high-grade metamorphic rocks. In 1891, C. L. Greisbach designed Gneiss and schist lithology, interbedded with quartzite, marble and amphibolite as the Vaikrita in Kumaun and eastern Himachal. Penetrated the high-grade metamorphic succession and widely migmatized through anatectic granites. Four formations in Uttarakhand define the division of the Vaikrita Group (Heim and Gansser 1939; Gansser 1964; Valdiya and Goel 1983; Valdiya et al. 1999). These are the Suru (Nanda and Singh 1977), the Padar (Jangpangi et al. 1978), the Higher Himalayan Crystallines (Fuchs 1977, 1987; Thakur 1987; Baud et al. 1984), and the Crystallines of Parbat-Zanskar (Thakur et al. 1990). Migmatites and anatectic granites trapped in a syntaxial bend were comprised by the Nanga Parbat - Haramosh Massif in the north-west. Variation in age from 841 ± 10 to 2560 ± 8 Ma was found in crystalline rocks of the Greater Himalayan (Spencer et al. 2012). Anticlinical structure formation was found for the Vaikrita complex (Wadia 1928; Coward and Butler 1985; Coward et al. 1988). However, neither the metamorphism in the proposed area has been dated nor has its Tectonometamorphic and magmatic evolution been constrained. In the Munsiari Formation in Kumaun, the metamorphism took place at temperatures of 600-650°C at 5-5.7 kbar pressures (Valdiya and Goel 1983). In the Garhwal sector, the metamorphic conditions have been estimated at 710oC at 3.2-5.25 kbar (Hodges and Silverberg 1988) and 550-640°C at 8-12 kbar (Metcalfe 1993). Metamorphics in higher north-eastern Kumaun Himalaya comprise gneisses, schist and amphibolite rocks. Here the possibility of grade is very high, and the P-T-t paths have not been attempted. Using the Pseudosection modelling by the bulk composition of metamorphic rocks of Higher Himalaya for metamorphism and diffusion modelling for the duration of thermal and tectonic processes in metamorphic rocks.