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.
One of the widely used hydrocarbon maturity parameter was vitrinite reflectance (Ro) The effectiveness of this technique had been proven good if it was used for coal sample But, its effectiveness was relatively declining if it was used for determining source rock, especially if that source rock contained relatively high hydrogen In this case, the va…
Northwards movements of the Indian Ocean plate relative to the Asian plate are postulated to be closely associated with north-south lateral compression in western Indonesia. This compression was responsible for the formation of a meridional shear system in java. This shear system has developed since the late cretaceous.