West Java is the Indian Ocean. Unlike most other provinces in Indonesia which have their capitals in coastal areas, the provincial capital, Bandung, is located in the mountainous area in the centre of the province. Banten Province was formerly part of West Java Province but was created a separate province in 2000. West Java, in the densely populated western third of Java, is home to almost 1 out of every 5 Indonesians. West Java and Banten provinces, as a part of the Pacific Ring of Fire, have more mountains and volcanoes than any of the other provinces in Indonesia. The vast volcanic
Oceanic trench to dispose of sediment. An evolution in trench morphology can be expected, as oceans close and continents converge. While the ocean is wide, the trench may be far from continental sources of sediment and so may be deep. As continents approach each other, the trench can fill with continental sediments and become shallower. A simple way to approximate when the transition from subduction to collision has occurred is when the plate boundary previously marked by a trench is filled enough to rise above sea level. Accretionary prisms grow in two ways: by frontal accretion, whereby sediments are scraped off the