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Geology of the Kualkulun in the Middle Kalimantan, Indonesia: I. Stratigraphy and Structure  

Kim In-Joon (한국지질자원연구원, 지질기반정보연구부)
Kee Won-Seo (한국지질자원연구원, 지질기반정보연구부)
Song Kyo-Young (한국지질자원연구원, 지질기반정보연구부)
Kim Bok-Ghul (한국지질자원연구원, 지질기반정보연구부)
Lee Sa-Ro (한국지질자원연구원, 지질기반정보연구부)
Lee Gyoo Ho (한국지질자원연구원, 지질기반정보연구부)
Publication Information
Economic and Environmental Geology / v.37, no.5, 2004 , pp. 437-457 More about this Journal
Abstract
The geology of the Kualakulun in the Middle Kalimantan, Indonesia comprises Permian to Carboniferous Pinoh Metamorphic Rocks and Cretaceous Sepauk Plutonics of the Sunda Shield, late Eocene Tanjung Formation, Oligocene Malasan Volcanics, Oligocene to early Miocene Sintang Intrusives and Quaternary alluvium. Tanjung Formation was deposited in low-and high-sinuosity channel networks developed on the proximal to distal delta plain and delta front forming southward paleoflow system, which, in turn, gradually change into shallow marine environment. Four main deformational phases are recognized: D1, folding of metamorphic rocks accompanied by development of S1 schistosity under regional metamorphic condition; D2, ductile shearing in Cretaceous granitoids; D3, folding of metamorphic rocks accompanied by S2 crenulation cleavage; D4, faulting under N-S compressional regime during Tertiary times, producing NE-trending sinistral and NW-trending dextral strike-slip faults and N-S to NNE-trending normal faults.
Keywords
Indonesia; paleoflow system; deformational phases;
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