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Did Shan-Thai twice marry Indochina and then India?: A Review |
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| รหัสดีโอไอ | |
| Creator | Sangad Bunopas |
| Title | Did Shan-Thai twice marry Indochina and then India?: A Review |
| Contributor | Sombon Khositanont |
| Publisher | Department of Geology, Chulalongkorn University |
| Publication Year | 2551 |
| Journal Title | Bulletin of Earth Sciences of Thailand (BEST) |
| Journal Vol. | 1 |
| Journal No. | 2-Jan |
| Page no. | 27-Jan |
| Keyword | Shan-Thai, Indochina, India, Inthanon, Khorat Plateau, Mekong River, cometary impact, glaciation |
| URL Website | https://www.bestjournal.org/ |
| Website title | Bulletin of Earth Sciences of Thailand |
| ISSN | 1906-280X |
| Abstract | "Did Shan-Thai twice marry Indochina then India?" Field evidences in the north and northeast Thailand led to a clear vision of their late heritage of the Quaternary pushed-pulled Himalayan extrusional continuum to major vertical crustal uplifting Inthanon Epeirogenesis to extreme that also tilted Khorat Plateau northeastwards and diverting Mekong River from Tonle Sap, both of which occurred prior to Buntharik Event (0.8 Ma cometary impact), Buriram basalts, and Asian glacial age. History of Gondwana-derived continental crusts in Southern Hemisphere, Shan-Thai and Indochina microcontinents, North China and South China subcontinents migrated from west Australia since very latest Devonian (some preferred most unlikely lower Permian) to settled in late Norian, for the first time above the ocean, in Pangea in Northern Hemisphere. During late Triassic both microcontinents drifted up the latitude and stayed in the Northern Hemisphere after the 1st continent-continent collision. Pre-first continent-continent collision between Shan-Thai and Indochina occurred just under the Equator as early as Lower Triassic. Since the breakup of Pangea in late Cretaceous time, and very much later India continent drifting northwards and effect southwest margin of South East Asia (northern extension of early Shan-Thai, previously amalgamated to Indochina and South China) but not until 45 Ma that the Himalayan Extrusion, caused by the 2nd continent-continent collision, began and have its paroxysm in Mid-Miocene. Second continent-continent collision is known to be started at latest Cretaceous to Paleogene in west Myanmar. The rise of the Himalayan, the opening of the Gulf of Thailand, the opening of the South and North China seas and the forming of some country lands like Japan, the Philippines and New Zealand, etc. occurred during the Himalayan Extrusion especially during the Miocene. The all headed-down Shan-Thai, Indochina, North China, South China moved up to Northern Hemisphere with clockwise rotation over a half round (more than 180ฐ) until the present day position. New discovery in northern Thailand suggests the Himalayan extrusional continuum from late Pliocene to lower Quaternary Inthanon Epeirogeny and uplifted from 200 m to 1,000 m, or even to 2,600 m in the western mountains of Thailand, or from few thousands to nearly ten thousand meters in the Himalayan. The Khorat Plateau's early Quaternary vertically uplifting, after long Cenozoic cratonization of the Mesozoic Khorat Group, its northeast tilting eastwards diverted Mae Khong River before the 0.8 ma cometary impact catastroleoss and the overflowing Mid-Pleistocene Buriram and Indochina basalts. The incident was identified from real-time sequence with firmly known by many consistent absolute age results obtained from around the world laboratories from bedded tektites and splashed tektites in Thailand and Indochina. Paleomagnetic reversal polarity results from catastroloess ensemble the real-time catastroloess from the Buntharik Event of 0.8Ma cometary impact are absolutely well constrained. Quaternary uplifting and the following cometary impact became the most important principle of the paper links to southward sudden extension of younger Pleistocene sudden full glacial intervals in Asia now are better understood. Precision of research and good clear vision are needed in understanding terrestrial and extraterrestrial mix-up processes through the whole Quaternary Neotectonics of Thailand. |
