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
Buddhism in Indonesia literature, particularly as documented in the oldest esoteric Buddhist tantric text in Old Javanese, the "Sang Kyang Kamahayanan Mantranaya" refer Kazuko Ishii (1992). In Indonesia Buddhism is mainly followed by the Chinese Indonesian people and some small indigenous groups of Indonesia, with 0.8% (including Taoism and Confucianism) of Indonesia's population being Buddhists. A small minority of Sasaks called the "Bodha" (estimated population: 8000) are mainly found in the village of Bentek and on the slopes of Gunung Rinjani, Lombok. They are totally untouched by Islamic influence and worship animistic gods, incorporating some Hindu and Buddhist influences in their rituals and