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The AAPG/Datapages Combined Publications Database

Indonesian Petroleum Association


6th Annual Convention Proceedings (Volume 1), 1977
Pages 241-253

The Status of the Melange Complex in Ciletuh Area, South – West Java

Endang Thayyib S., Said E. L., Siswoyo, Sumarso Prijomarsono


Pre-Tertiary exposures are known to occur in Java at three localities, namely the Jiwo Hills and Luk Ulo area in Central Java and the Ciletuh area, in West Java. The pre-Tertiary rock assemblage in Luk Ulo has been regarded as a melange complex.

In the Ciletuh area, the pre-Tertiary rocks are well exposed along the course of Citisuk river and its surrounds consisting of ultra basic to basic rocks (peridotite, gabbro, pillowed basalt), metamorphic rocks (serpentinite, schist, phyllite, quartzite) and sedimentary rocks (red clay, black shale, greywacke, limestone). These units are tectonically mixed, and the realtionship between them can not be explained by applying the law of superposition, lateral continuity and faunal assemblage as used in normal deposition.

Data at hand strongly suggest that this rock assemblage might be regarded as a melange complex.

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