Preliminary Volcanic stratigraphy of the Khao Noi volcanic, Tha Takiap District, Chachoengsao Province, eastern Thailand

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Amporn Chaikam
Abhisit Salam
Takayuki Manaka


The Khao Noi volcanics (study area) is in Tha Takiap district, Chachoengsao Province. This volcanics is part of the Lampang Volcanic Belt, a potential host rocks for mineralization especially gold and antimony epithermal style. Based on field investigation and drill core logging, the volcanic sequence at Khao Noi has a thickness of 150 meters. The lowest unit (sedimentary unit-Unit 3) which forms as a basement for the Khao Noi volcanics sequence is characterized by laminated limestone, laminated sandstone, limestone breccia, and laminated mudstone. The volcanic sequence can be divided into two units namely, 1) Mafic-intermediate volcanic unit (Unit 2) consisting of plagioclase-phyric andesite, monomictic andesitic breccia, and 2) Felsic volcanic unit (Unit 1) comprising of crystal-rich pumice breccia, lithic-rich pumice breccia, and quartz-phyric andesite. The contact between Unit 2 and Unit 1 is sharp contact and compositionally change from mafic-intermediate to felsic composition. The Khao Noi volcanic architecture is mainly composed of mafic to felsic volcanic succession reflects in eruption style, proximal and distal from sources, depositional environments, and emplacement processes, relatively shallow marine which dominant below wave-base submarine to the subaerial setting. After the formation of the Late Carboniferous sedimentary unit (Unit 3), Unit 2 was deposited with predominantly of andesite and subsequently followed by the deposition of volcanics Unit 1. The volcanic facies architecture comprises interfingering proximal and distal facies association related to four main volcanic types; (1) Submarine andesite includes plagioclase-phyric andesite facies and monomictic andesitic breccia facies. (2) Shallow mafic-intermediate intrusions comprise plagioclasephyric basalt and aphyric trachyte. (3) Submarine pumice pyroclastic surge comprises crystal-rich pumice breccia facies and lithic-rich pumice breccia facies, and (4) Syn-eruptive intrusion of quartzphyric rhyolite facies.

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Chaikam, A., Salam, A., & Manaka, T. (2021). Preliminary Volcanic stratigraphy of the Khao Noi volcanic, Tha Takiap District, Chachoengsao Province, eastern Thailand. Bulletin of Earth Sciences of Thailand, 13(1), 19–26. Retrieved from
Research Articles


Barr, S. M., and A. S. Macdonald, 1991, Toward a late Palaeozoic-early Mesozoic tectonic model for Thailand.

Cas, R., and J. Wright, 2012, Volcanic successions modern and ancient: A geological approach to processes, products and successions: Springer Science & Business Media.

Fontaine, H., S. Salyapongse, and D. Vachard, 1999, The Carboniferous of East Thailand—New Information from Microfossils.

Gifkins, C. C., J. McPhie, and R. L. Allen, 2002, Pumiceous rhyolitic peperite in ancient submarine volcanic successions: Journal of Volcanology and Geothermal Research, v. 114, no. 1–2, p. 181–203.

Gill, R., 2010, Igneous Rocks and Processes: A Practical Guide: p. 472.

McPhie, J., and R. L. Allen, 2003, Submarine, silicic, syn-eruptive pyroclastic units in the Mount Read Volcanics, western Tasmania: Influence of vent setting and proximity on lithofacies characteristics: GMS, v. 140, p. 245–258.

McPhie, J., M. Doyle, and R. L. Allen, 1993, Volcanic textures: a guide to the interpretation of textures in volcanic rocks.

Paipana, S., 2014, Geology and Mineralization Characteristics of Bo Thong Antimony+-Gold Deposit, Chonburi Province, Eastern Thailand: BSc (Hons) Thesis, University of Tasmania, Hobert, Australia, p. 100.

Pichler, H., 1965, Acid hyaloclastites: Bulletin volcanologique, v. 28, no. 1, p. 293–310.

Tiyapirach, S., 1996, Geological map of Amphoe Tha Takiap (5335 IV)-1:50,000 scale. Bureau of Geological Survey, Department of Mineral Resources, Bangkok, Thailand, Geological map: Bangkok, Thailand, Department of Mineral Resources, 00000.

Wipakul, U., C. Tiangtham, B. Srithai, and Y. Panjasawatwong, 2012, Volcanic Facies of the Doi Phra Baht Volcanic Deposits, Mueang District, Lampang Province, Thailand: v. 5, no. 1, p. 9.