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Rai, Hakim
- The Ophiolitic Suture Zones of the Ladakh and the Kailas Region-A Comparison
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1 Wadia Institute of Himalayan Geology Dehra Dun-248001, IN
1 Wadia Institute of Himalayan Geology Dehra Dun-248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 21, No 6 (1980), Pagination: 311-313Abstract
No Abstract.Full Text
- A Note on the Geology of Nubra-Shyok Area of Ladakh, Kashmir, Himalaya
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1 Wadia Institute of Himalayan Geology, Dehradun 248001, IN
1 Wadia Institute of Himalayan Geology, Dehradun 248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 22, No 1 (1981), Pagination: 46-50Abstract
The Nubra-Shyok area lying between Ladakh range in the north and Karakoram range in the south, differs tectono-stratigraphically from the Indus Suture zone. It is characterised by acid to intermediate volcanics with interbedded sediments of Lower Cretaceous age (Khardung volcanics) and an ophiolitic melange consisting of low to medium grade metasediments, lava flows alternations of sandstone, shale conglomerate and bodies of serpentinite, pyroxenite, hornblendite and diorite (Shyok Formation). These are intruded by a tonalite body in the northwestern part of the area. The tectono-stratigraphy of the Nubra-Shyok area suggests that they probably represent the components of a marginal basin in an island-arc system.Full Text
- Some Geological Observations on the Area Between Khalsar and Darbuk in the Shyok Valley, Ladakh
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1 Wadia Institute of Himalayan Geology, Dehra Dun 248001, IN
1 Wadia Institute of Himalayan Geology, Dehra Dun 248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 27, No 6 (1986), Pagination: 512-516Abstract
The study of the area between Khalsar and Darbuk, in the Shyok Valley, reveals that ophiolitic melange with granitic intrusions is dominating. The Khardung acid volcanics do not extend to the east as was shown in earlier maps. Rocks of this area are the continuation of the Shyok tectonic zone.
- A New Metabasic Reference Sample (MB-H) from Himalayan Orogenic Belt
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Affiliations
1 Wadia Institute of Himalayan Geology, 33-General Mahadeo Singh Road, Dehra Dun-248001, IN
1 Wadia Institute of Himalayan Geology, 33-General Mahadeo Singh Road, Dehra Dun-248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 37, No 5 (1991), Pagination: 453-456Abstract
An attempt has been made to produce an international metabasic rock standard from the Rudraprayag Fonnation of Himalayan orogenic belt. The bulk sample collected has been processed and subjected to homogeneity test (F test). The salient petrographic features. proximate analysls and the F-ratio of the different fractions are presented in this paper.- Geochemical-and Isotopic Studies of the Granitoids Exposed on the Southern Slope in the Sasoma-Saser Brangra Section of Karakoram Batholith, Jammu and Kashmir
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1 Wadia Institute of Himalayan Geology, 33 General Mahadeo Singh Road, Dehradun - 248 001, IN
1 Wadia Institute of Himalayan Geology, 33 General Mahadeo Singh Road, Dehradun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 3 (2005), Pagination: 325-334Abstract
The Karakorarn Batholith is one of the geological features that traverses the entire Karakorarn range. There is wide compositional variation across the batholith. The granitoids of Karakoram Batholith separate the metamorphic complex from the Karakoram Tethys sequence. The purpose of this study is to provide geological information on the Karakoram batholith and to suggest possible mechanisms that were responsible for the development of granitoids of the southern slope of the Karakorarn Batholith between Sasoma-Saser Brangra regions. The studies suggest that, the granitoids are metaluminous to peraluminous (mol. A/CNK value is -1.0), have Sti, ratio ∼0.709, show volcanicarc affinity, and suggest emplacement age of ∼124 Ma. They represent the reworking of lower crustal Calc-Alkaline parental rocks.Keywords
Geochemistry, 124 Ma Granitoids, Metaluminous I-type, Sasoma-Saser Brangra, Karakoram Batholith, Jammu and Kashmir.- Geochemical Studies of Granitoids from Shyok Tectonic Zone of Khardung-Panamik Section, Ladakh, India
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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, General Mahadeo Singh Road, Dehradun - 248 001, IN
1 Wadia Institute of Himalayan Geology, General Mahadeo Singh Road, Dehradun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 4 (2009), Pagination: 553-566Abstract
The Shyok tectonic zone lies to the north of Ladakh magmatic arc or the Ladakh batholith in the Trans- Himalaya of Ladakh district, J & K. Investigations were carried out on the granitoids exposed along Leh-Siachan highway between Khardung and Panamik villages. The granitoid bodies under study are: Khardung granite (KG), Tirit granite (TG) and Panamik granite (PG) belonging to Ladakh batholith, Shyok ophiolitic mélange and Karakoram batholith respectively. Though the granitoids belong to different litho-tectonic units, yet they have subduction related geochemical characters typical of Andean-type granitoids. Re-melting of crustal rocks of volcanic arc affinity has played an important role for the origin of KG rocks which are more evolved, while the TG and PG rocks represent transitional tectonic environment from primitive to mature arc.Keywords
Granitoids, Geochemical Studies, Shyok Tectonic Zone, Ladakh, Jammu and Kashmir.References
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- Geology of the Sbyok Tectonic Zone in Eastern Ladakh, India
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Authors
Affiliations
1 Wadia lnstitute of Himalayan Geology, Dehradun - 248 001, IN
1 Wadia lnstitute of Himalayan Geology, Dehradun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 49, No 6 (1997), Pagination: 727-730Abstract
The Oarbuk-Chushul area, an easternmost part of the Shyok Tectonic Zone within the Indian territory, is dominated by three main lithologies i.e., the Tangse Porphyritic Granite, ophiolitic melange and Ladakh Batholith. A tectonic mixture of basic volcanics with pillow lava, rare serpentinite and flyschoidal sediments constitute the melange sequence. Northern flank of the Ladakh Batholith is exposed in this region. Beside the main batholith, there are intrusive granitic bodies within the Shyok Tectonic Zone. To the north, Tangse Porphyritc Granite forms a thin but continuous belt.Full Text