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Geomorphological Characteristics of Phu Phra Angkhan, Buriram Province: Evidence from Remote Sensing and Geological Data |
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| รหัสดีโอไอ | |
| Creator | Nattarika Meesa |
| Title | Geomorphological Characteristics of Phu Phra Angkhan, Buriram Province: Evidence from Remote Sensing and Geological Data |
| Contributor | Patcharin Kosuwan Jundee, Pichawut Manopkawee, Wipawee Wilaisit, Punya Charusiri |
| Publisher | Department of Mineral Resources of Thailand |
| Publication Year | 2568 |
| Journal Title | Thai Geoscience Journal |
| Journal Vol. | 6 |
| Journal No. | 10 |
| Page no. | 1-25 |
| Keyword | Geomorphology, Extinctvolcano, Landform, PhuPhraAngkhan, Buriram, Basalt |
| URL Website | https://ph03.tci-thaijo.org/index.php/TGJ |
| Website title | THAI GEOSCIENCE JOURNAL |
| ISSN | 2730-2695 (Print)3056-9370 (Online) |
| Abstract | Phu Phra Angkhan, the small hill where the architectural and religious sites have been established, is in Buriram p, northwestern Thailand. The area has been selected for the current investigation with the aims of determining geomorphological characteristics and proposingthe mode of occurrencesusing geographic information system (GIS). The current research commences from geological data compilation, remote-sensing image interpretation, field checking, and explanation of the landform. The result illustrates that Phu Phra Angkhan is a small extinct volcano, based upon the radiometric age (~ 0.9 Ma) of the volcanic rocks at the nearby Khao Phanom Rung volcano. The current field study demonstrates that Phu Phra Angkhan volcano consists of massive layers of alkali olivine basaltic lava without any pyroclastic debris. Previous geochemical data reveal that the silicon oxide is lower than 55 %, suggesting that the lava has low viscosity enough to spread over a wide area. The lava accumulation may have caused thecone-shaped volcanic landform to form shield or dish cover with relatively not gentle slopes. Additionally, it is also recognized that its crater has a circular shape with a radius of 1.0 to 1.5 km, and its circumference is about 3.14 km. The cross sections in several directions disclose that the Phu Phra Angkhan volcano has its various slope angles and asymmetrical shapes. The steeper slope angles are in the eastern flank with its deeply eroded slope surface whereas on the western flank more gentle slopes are encountered.Based on its morphology and landform characteristics and classification, it is concluded that Phu Pra Angkhan represents the extinct shield volcano with a collapsed crater, formed by explosion associated with surface subsidence. Its mode of occurrence is manifested by a complex crater forming as nested circumferences.. Moreover, a very small mound or hill is found at the eastern edge crater, triggered by crater-ring fracturing, implying the last, relatively violent eruption. It is also anticipated that the temple located at the crater edge is considered to be safe from a landslide disaster. |
