R8: Metamorphic rocks and tectonics

[R8-11] Metamorphic zone mapping and a P-T path of metapelite of the Higher Himalayan crystalline nappe in Dhankuta, eastern Nepal

[Presentation award entry]

*Shumpei Kudo¹, Tetsuo Kawakami^1,2, Toru Nakajima¹, Harutaka Sakai¹ (1. Kyoto Univ. Sci., 2. JAEA)

Keywords:Himalaya, Higher Himalayan crystalline nappe

We newly constructed a P-T path of a Grt-Ky-Bt gneiss in Higher Himalayan Crystalline nappe by applying geothermobarometers to inclusions in Grt and replacement microstructure of Grt rim. As a result, the sample is shown to have experienced a P-T path starting from the Ky stability field to the Sil stability field. Compared with reported P-T(-t) paths, the rocks in the HHC nappe and the lower HHC in the root zone are suggested to have experienced similar exhumation process.