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Publication
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| Title of Article |
Characteristics of Collapsible Red Soil in Northeast Thailand |
| Date of Acceptance |
27 August 2023 |
| Journal |
| Title of Journal |
Geology, Ecology, and Landscapes |
| Standard |
SCOPUS |
| Institute of Journal |
Taylor and Francis Group |
| ISBN/ISSN |
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| Volume |
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| Issue |
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| Month |
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| Year of Publication |
2023 |
| Page |
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| Abstract |
We analyzed the characteristics of red soils exposed on terraces in northeast Thailand
that cover the urban area of Khon Kaen Province; these soils are often considered
collapsible soils, and their engineering properties have been widely explained.
However, their soil genesis has been the subject of debate. In this study, we examined
the depositional environment and lithologic characteristics, analyzed stratigraphy, and
conducted mechanical sieve, X-ray fluorescence, X-Ray diffraction, scanning electron
microscope, X-ray fluorescence analyses and optically stimulated luminescence
dating. We analyzed samples collected from the gravel pits on the terrace around the
Khon Kaen subbasin to examine and reveal details of their depositional processes.
Based on particle size distribution, we inferred that the abrupt particle size change in
the overlying soil formed a pseudo-disconformity with the subjacent gravel bed. The
soil was unstratified with granule gravels scattered throughout the soil layer. The soil
consisted of mostly sand (~70%), with minor silt and clay contents (~30%); thus, the
soil was classified as silty sand. The soil samples contained a large amount of silicon,
a high percentage of quartz, with the source being local weathered rocks of the Khorat
Group. V-shaped micro textures represented percussion and abrasion mechanisms on
the surface of individual grains, suggesting transport by fluvial processes. The
deposition occurred during the Late Pleistocene, and the absence of desert
environment suggested different conditions than those associated with aeolian
deposition. Consequently, the lithology, physical and chemical properties, and
chronology were consistent with termite mounding, which plays an important role in the
upward transportation of small particles and causes large sediments to descend.
Therefore, a defining feature of this collapsible soil is the particle size distribution of red
sand in the Khon Kaen subbasin terraces. |
| Keyword |
Quaternary terrace deposits; Khon Kaen collapsible soil; loess; red soil; digital elevation model (DEM) |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| ใช้สำหรับสำเร็จการศึกษา |
ไม่เป็น |
| Attach file |
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| Citation |
0
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Journal Publication
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