Kaeng Krachan Gr
Type Locality and Naming
Remarks: The Kaeng Krachan Fm (Javanaphet, 1969) was proposed as the upper part of the Tanaosri Group. Piyasin (1975) raised the Kaeng Krachan formation to group status. The Phuket group (Mitchell and others, 1970) is equivalent of the Kaeng Krachan Group; however, the given age (Cambrian-Lower Permian) is now known to be erroneous (Lexicon of Stratigraphic Names of Thailand, 2013).
Subdivisions: Piyasin (1975) proposed 3 formal formations: Huai Phu Noi Fm, Khao Phra Fm and Khao Chao Fm; Raksaskulwong and Wongwanich (1993) revised the group to comprise 4 formations: Khao Wang Kradat Fm, Spillway Fm, Ko He Fm and Khao Phra Fm; Chaodumrong and others (2007) revised the group to consist of 5 formal formations: Laem Mai Phai Fm, Spillway Fm, Ko He Fm, Khao Phra Fm and Khao Chao Fm, and the formations have been used in recent geological maps of the Department of Mineral Resources.
Synonym: กลุม่หินแก่งกระจาน
Lithology and Thickness
[Figure: Geological column of Kaeng Krachan Group and Ratburi Limestone in Phi Phi Island off Krabi, southern Peninsular Thailand. Data mainly from Ejima (2005) with minor modification (Ueno & Charoentitirat, 2011).]
Relationships and Distribution
Lower contact
Upper contact
Regional extent
[Figure 1-3: Distribution of Carboniferous–Permian in lower Peninsular, Western region and upper peninsular Thailand, respectively. Data mainly based on 1:1 million scale geological map of Thailand (DMR 1999) with minor modifications (KKG: Kaeng Krachan Group). (Ueno & Charoentitirat, 2011).]
GeoJSON
Fossils
Age
Depositional setting
Additional Information