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
Culture of Indonesia cities and large towns there are also many commercial stations. Since 2006, several digital radio stations have been based in Jakarta and Surabaya, using Digital Audio Broadcasting (DAB) and Hybrid HD-Radio. Islam is Indonesia's main religion, with almost 88% of Indonesians declared Muslim according to the 2000 census, making Indonesia the most populous Muslim-majority nation in the world. The remaining population is 9% Christian (of which roughly two-thirds are Protestant with the remainder mainly Catholic, and a large minority Charismatic, 2% Hindu, and 1% Buddhist. The "Pancasila", the statement of two principles which encapsulate the ideology of the Indonesian state,