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The trench stretches from the Lesser Sunda Islands past Java, around the southern coast of Sumatra to the Andaman Islands, and forms the boundary between the Indo-Australian plate and Eurasian plate (more specifically, Sunda plate). The trench is considered to be part of the Alpide belt as well as one of oceanic trenches around the northern ...
The Sahul Shelf and the Sunda Shelf today. The area in between is called "Wallacea"Sundaland [1] (also called Sundaica or the Sundaic region) is a biogeographical region of Southeast Asia corresponding to a larger landmass that was exposed throughout the last 2.6 million years during periods when sea levels were lower.
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.
"Sunda" also denotes continental shelves or landmasses. Indonesia itself has two shelves: the Sunda Shelf in the west and the Sahul/Arafuru Shelf in the east. Other terms associated with "Sunda" include the Sunda Island Arc or the arc of Sunda Islands, Sunda Fold or tectonic folding in the Natuna Sea, the Sunda Trench, and Sundaland. [1]
They categorized the region into Greater Sunda (Sunda Besar) for the larger western islands and Lesser Sunda (Sunda Kecil) for the smaller eastern islands. Since then, the term "Sunda" has been widely adopted in earth sciences (geology-geography) as a reference for the Indonesian region, surpassing the usage of "Indonesia" in this field. The ...
The Sunda plate is a minor tectonic plate straddling the equator in the Eastern Hemisphere on which the majority of Southeast Asia is located. [ 1 ] The Sunda plate was formerly considered a part of the Eurasian plate , but the GPS measurements have confirmed its independent movement at 10 mm/yr eastward relative to Eurasia.
The Flores back-arc thrust fault is a major system of west–east trending thrust faults that extend eastwards from west of Lombok just south of where Sunda Shelf ends at Bali Sea, towards the islands of Sumbawa, Flores, and Alor, with a total length of at least 800 km., [1] entering the Weber Basin and Aru Basin adjacent Sahul Shelf of the Australian plate.
The Sumatra Trench is a part of the Sunda Trench or Java Trench. The Sunda subduction zone (called also: the Sumatra-Andaman subduction zone) is located in the east part of Indian Ocean, and is about 300 km (190 mi) from the southwest coast of Sumatra and Java islands.