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Palaeovegetation and palaeoclimate of tertiary sediments fromHongsa Coalfield, Xayabouly province,Lao PDR โ" Implication from palynofloras |
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| รหัสดีโอไอ | |
| Creator | 1. Thunyapat Sattraburut 2. Benjavun Ratanasthien 3. Yupa Thasod |
| Title | Palaeovegetation and palaeoclimate of tertiary sediments fromHongsa Coalfield, Xayabouly province,Lao PDR โ" Implication from palynofloras |
| Publisher | Research and Development Office,Prince of Songkla University |
| Publication Year | 2564 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 43 |
| Journal No. | 3 |
| Page no. | 648-659 |
| Keyword | palynology, tertiary, Hongsa coal mine, palaeoclimate, palaeovegetation |
| URL Website | https://rdo.psu.ac.th/sjstweb/ |
| ISSN | 0125-3395 |
| Abstract | Palynological contents of organic-rich Tertiary sediments of the Hongsa coalfield, Xayabouly Province, north-westernLao PDR, were investigated. Palynomorphs that were used to reconstruct the palaeovegetation and palaeoclimate, were extractedfrom a sediment drill core from the central part of the Hongsa coal mine. Three pollen zones from bottom to top (Hongsa I zone,Hongsa II zone, and Hongsa III zone) were divided based on the quantitative change of the palynological assemblages. Theyindicate the change of climate from subtropical to temperate during the deposition of the Hongsa coal. The Hongsa vegetationcomposes of subtropical to warm temperate broad-leaved forests. Quercus, Fagus, castanoids, Salix, Fabaceae, and Myrtaceaewere the dominant trees and shrubs, and ferns were commonly found on the forest floor. The palynological assemblages from theHongsa Basin are different from the Oligocene and Miocene from northern Thailand; however, they are similar to the middle tolate Miocene of southwest China. |
