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A simplified map of the geological structures of Indonesia. The tectonics of Indonesia are very complex, as it is a meeting point of several tectonic plates.Indonesia is located between two continental plates: the Sahul Shelf and the Sunda Plate; and between two oceanic plates: the Pacific Plate and the Philippine Sea Plate.
Indonesia has relatively high tectonic and volcanic activities. It lies on the convergence between the Eurasian , Indo-Australian , Pacific , and Philippine Sea plate . The Sunda megathrust is a 5,500 km long fault located off southern coasts of Sumatra, Java and Lesser Sunda Islands, where the Indo-Australian Plate is thrusting northeastward ...
Map showing the location of volcanoes and geological fault lines of Sumatra. The geography of Sumatra is dominated by a mountain range called Bukit Barisan (lit: "a row of hills"). The mountain range spans nearly 1,700 km (1,100 mi) from the north to the south of the island, and it was formed by movement of the Australian tectonic plate. [9]
Tectonic - Indo-Australian Plate and Eurasia Plate Major Volcanoes - Merapi , Krakatoa , Mount Sinabung , Semeru The Sunda Arc is a volcanic arc that produced the volcanoes that form the topographic spine of the islands of Sumatra , Nusa Tenggara , Java , the Sunda Strait , and the Lesser Sunda Islands .
Banda Arc tectonic map. The Banda Arc (main arc, Inner, and Outer) is a dual chain of islands in eastern Indonesia that is around 2,300 km long. It is the result of the collision of a continent and an intra-oceanic island arc.
Simplified geologic map of Kalimantan (Borneo) Island Map of Borneo and surrounding features. Made using GeoMapApp. The basement rock of Borneo is a complex mosaic of geologic terrains, commonly interpreted as the product of primarily Mesozoic accretion of micro-continental fragments, island arc material, oceanic crustal material and marginal basin fill onto the Paleozoic core of the Schwaner ...
This is considered to be a feature representing a major tectonic discontinuity between the east and west Sunda Arcs (the Sumba Fracture). [17] Further, a marked absence of shallow and intermediate earthquake activity in the region to the south of Lombok and Sumbawa is a feature interpreted to represent a marked break in the Sunda Arc Zone. [17]
Indonesia is a country located close to tectonic plate boundaries which causes it to have many active faults and is prone to earthquakes, [1]