Geology of Indonesia active volcanoes formed Sumatra, Java, Bali, and Nusa Tenggara islands, most of which, particularly Java and Bali, emerged within the last 2–3 million years. The Pacific and Australian plate movements controlled the tectonics of the eastern portion of Indonesia. The tectonics processes in Indonesia formed major structures in Indonesia. The most prominent fault in the west of Indonesia is the Semangko Fault or the Great Sumatran Fault, a dextral strike-slip fault along Sumatra Island (about 1900 km). The formation of this fault zone is related to the subduction zone in the west of Sumatra. Palu-Koro fault is another major structural
Bishops' Conference of Indonesia cooperation in their pastoral duties to lead Catholics in Indonesia. KWI is not "above" or supervises bishops, each bishop remains autonomous. KWI does not have branches in the area. Until now the number of members is 38, the number of dioceses in Indonesia 37, each bishop lead one diocese, except the Diocese of Ambon that having two Bishops, the Archbishop and the Auxiliary Bishop. All bishops in Indonesia are members of KWI, except for the retired bishops. Ecclesiastical Province of Medan Ecclesiastical Province of Palembang Ecclesiastical Province of Jakarta Ecclesiastical Province of Semarang Ecclesiastical Province of Pontianak Ecclesiastical Province of