Lithostratigraphy of Part of Sao Khua Formation at Khao Phang Hoei Area, Amphoe Thepsatit, Changwat Chaiyaphum
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Abstract
The rock units in the study area are sub-horizontal clastic sediments in four lithostratigraphic units of Sao Khua Formation. The rocks are reddish brown to purplish grey siltstones, mudstones with calcrete nodules and bioturbation burrows, conglomeratic to very finegrained reddish brown to greyish white well sorted sandstones showing many sedimentary structures such as graded bedding, cross-bedding, and cross-lamination. Petrographic studies indicate that the sandstones in the study area are sublitharenite and subarkose. The depositional environment indicated is meandering rivers in semi-arid to arid paleoclimate.
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Copyright © 2008 Department of Geology, Faculty of Science, Chulalongkorn University. Parts of an article can be photocopied or reproduced without prior written permission from the author(s), but due acknowledgments should be stated or cited accordingly.
References
Meesook et al., 1995, Non-marine Mesozoic Rocks in the Vicinity of Khorat Plateau. Proceedings of the Symposium on Geology of Thailand 26-31 August 2002, Bangkok, Thailand, pp. 102-110.
Department of Mineral Resources, 1976, Geological map of Thailand 1:50,000. Explanation for the sheets Amphoe Ban Mi, Geological Survey Division, Department of Mineral Resources, Bangkok, Thailand.