Pressure, temperature and time constraints on Himalayan metamorphism from eastern Kashmir and western Zanskar

Article Abstract:

Crustal thickening due to deformation of the Indian plate during the Indian-Asian plate collision resulted in Himalayan metamorphism in Kashmir and Zanskar. Evidence of continental margin rock metamorphosis exists, while pre-collision K-feldspar and other granites are also found. Equilibration pressure-temperature conditions across a 45-km traverse are documented. Analysis indicates early prograde metamorphism, southward diachronous metamorphism propagation and passive isograd and thrust-fold structures in the hanging-wall. Exhumation of Himalayan metamorphic rocks was accomplished through erosion, uplift and extensional unroofing.

Analysis, Rocks, Metamorphic, Metamorphic rocks, Metamorphism (Geology), Himalaya Mountains, Morphotectonics

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An integrated tectonothermal model for the evolution of the High Himalaya in western Zanskar with constraints from thermobarometry and metamorphic modeling

Article Abstract:

Research focusing on a part of the High Himalaya in western Zanskar where the metamorphic core of the High Himalaya is particularly exposed is presented. It was possible to determine the metamorphic evolution by studying garnet growth using phase diagrams and Gibbs method modelling. An integrated tectonothermal model for the evolution of the High Himalayan crystalline rocks is suggested.

Himalaya Mountain Region

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The tectonic evolution of the Kohistan-Karakoram collision belt along the Karakoram Highway transect, north Pakistan

Article Abstract:

The Kohistan arc terrane in north Pakistan is an exposed section from the deep root to the volcanic edifice of an island arc, trapped within the Tethyan suture zones between India and Asia during the Himalayan collision. New data from Kohistan and the Karakoram has been compiled and used to propose a tectonic evolutionary model for the Kohistan arc.

Pakistan

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