The role of strike-slip faulting in the history of the Hukawng Block and the Jade Mines Uplift,Myanmar |
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Authors: | Michael F Ridd Michael J Crow Christopher K Morley |
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Institution: | 1. Independent geologist, London, United Kingdom;2. Formerly British Geological Survey, Nottingham, United Kingdom;3. Department of Geological Sciences, Chiang Mai University, Chiang Mai 50200, Thailand |
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Abstract: | The Hukawng Basin is bounded on its east by splays of the still-active Sagaing Fault. Palinspastically restoring Myanmar's blocks to their positions before the widely-accepted c.400?km dextral strike-slip fault displacement, places the Hukawng Block alongside the Tengchong Block, suggesting they were formerly connected. Additionally the Cretaceous–Paleogene Medial-Myanmar Shear Zone then aligns with the NW-SE Jade Mines Belt. Jadeitite formed there under HP/LT conditions in a Mesozoic subduction zone. It was exhumed at the intersection of the dextral Medial-Myanmar Shear Zone with the subduction-zone at the continental margin of Sundaland. The later Sagaing Fault played no part in that exhumation. |
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Keywords: | Hukawng Block Sagaing Fault Tengchong Block Medial-Myanmar Shear Zone Jade Mines Jadeitite |
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