Himalaya sections:

Metamorphism and Tectonics in the Himalaya and Karakoram

A collaboration with M. P. Searle and external co-workers involving several graduate students.

Current and completed D.Phil. projects:

On the linked pages you will find some information about our research on the High Himalayan Slab in the Zanskar region of NW India and the Everest region of Nepal and south Tibet.

The High Himalayan Slab, which forms the high-grade metamorphic core of the Himalaya, was metamorphosed during the India-Asia collision and was rapidly uplifted, while still at high temperature, between the Main Central thrust and the South Tibetan detachment zone. We are studying the metamorphic history of the slab to determine the mechanism of its formation and emplacement. The prograde and near-peak P-T path can be calculated from garnets showing prograde growth zoning and from the sequence of assemblages deduced from inclusion suites and microstructural relationships in the matrix. Diffusional closure profiles in garnets from higher-grade rocks and reaction microstructures constrain the retrograde P-T path. The later stages of the exhumation history are deduced from cooling age patterns.

Over the past few years our focus has moved to the Everest area of Nepal, where the upper part of the High Himalayan Slab is well displayed (though not easy of access). My own contribution has been to study the petrological material collected in situ from the northern side of Everest by Lawrence Wager, participant in the 1933 British climbing expedition and subsequently Head of this Department. Lawrence Wager and the Geology of Mt Everest is the web version of a display poster prepared for student open days in 2006.