Isotopic constraints on the cooling history of the Nanga Parbat-Haramosh Massif and Kohistan arc, western Himalaya

Article Abstract:

The 40Ar/39Ar and Rb-Sr mica cooling ages determined for the northern part of the Nanga Parbat-Haramosh Massif (NPHM) are from 1.4 to 7.7 Ma, whereasthe equivalent ages of the Kohistan arc are predominately from 12.9 to 26.6 Ma. The little systematic variation from east to west in the cooling histories for these areas prove that the basement could have been exhumed as a relatively rigid block, after multiple stages of folding. This contrast in the cooling ages points to a rapid cooling of the NPHM in the last 10 m.y. compared to the Kohistan arc.

Analysis, Geology, Stratigraphic, Stratigraphy, Paleoclimatology, Himalaya Mountain region

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Geology of the northern part of the Nanga Parbat massif, northern Pakistan, and its implications for Himalayan tectonics

Article Abstract:

An analysis describing data on the Nanga Parbat massif is presented. The massif supports a northern outcrop termination of Indian continental crust. Tectonic contact with the Kohistan island arc links its lithology with that of Nanga Parbat. This lithological relation may be associated with the Main mantle thrust in the northwestern Himalayan region. Analysis shows no evidence of the massif's role as a promontory to the Indian continent nor of any neotectonic faults bounding its area.

Pakistan

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7th Himalaya-Karakoram-Tibet workshop

Article Abstract:

The success of the first Himalayan workshop in Leicester University in 1985 led to an agreement to have the conference on an annual basis. Conferences focusing on goelogical research involving the Himalaya Mountains, Tibet and the Karakoram Range were held in France in 1986, London in 1987, Switzerland in 1988, Italy in 1990 and France in 1991. The Geological Society hosted the 1992 meeting in the Dept of Earth Sciences, Oxford University.

Conferences, meetings and seminars, Tibet, Karakoram Range

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