- Geologi Indonesia
- Busur Banda
- Lempeng Sunda
- Cendana
- Kepulauan Nusa Tenggara
- Zona subduksi Selat Sunda
- Universitas Syiah Kuala
- Daftar gunung berapi di Indonesia
- Daftar ibu kota provinsi di Indonesia
- Subduksi
- Banda Arc
- Banda Sea
- Sunda Arc
- Sunda plate
- Subduction
- Timor
- Rote Island
- Weber Deep
- Flores back-arc thrust fault
- Barat Daya Islands
- Banda Arc - Wikipedia
- What Is The Banda Arc? - WorldAtlas
- The Geology of Indonesia/Banda Arc - Wikibooks
- Surface deformation and slab–mantle interaction during Banda arc ...
- Discovery of biggest exposed fault on Earth solves mystery of …
- Indonesia's puzzling Banda arc: New findings explain mystery …
- Movements, collisions and the Banda Arc – Wallacea and …
- Banda Arc: broadband 2D seismic unlocks frontier area
- Banda Arc Experiment—Transitions in the Banda Arc‐Australian ...
- Banda Arc ISRA - Important Shark Ray Areas
Banda Arc GudangMovies21 Rebahinxxi LK21
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.
The presently active volcanic arc is mounted on stretched continental and oceanic crust whereas the associated subduction trench is underlain by continental crust, which has subducted deep enough to contaminate the volcanic arc with continental melts. The island of Timor is notable for the lack of volcanic activity. This is due to the island representing the zone of fore-arc and continental collision which prevents volcanic activity from occurring.
The convergence of the Indo-Australian plates and Eurasia resulted in the formation of the Sunda and Banda island arcs. The transitional zone between the arcs is located south of Flores Island and is characterized by the change in the tectonic regime along the boundary in the Timor Region.
Geologic Setting
Some academic literature refers to the arcs by location – so that the main arc can be referred to as the 'southern', the 'western' Situated at the centre of three converging and colliding major tectonic plates, Indo-Australia, Eurasia, Pacific, the Banda arc includes young oceanic crust enclosed by a volcanic inner arc, outer arc islands and a trough parallel to the Australian continental margin. It is a complex subduction setting (where one plate moves under another, sinking into the Earth's mantle), with possibly the largest fold on Earth, extending to a depth of about 650 km (404 mi), in a subducted plate. Although the Australian Continental crust does not subduct, the sub-crustal mantle lithosphere that is attached to the Australian plate continues to subduct underneath the Eurasian plate. This subduction continues to pull the Australian plate in a northward direction today.
Inner and outer arcs
The Banda Arc is a double island arc formed by the collision of the Indo-Australian plate with the Eurasian plate that commenced around 15 to 12 million years ago. Principal islands include Timor, Flores, and Seram.
The Inner Banda Arc consists of a string of recent and active volcanic islands from Komodo to Kekeh-besar of the Barat Daya Islands, including Flores, Solor, Alor, Wetar, and Damar.
The Outer Banda Arc consists of Australian continental margin cover units that were scrapped off the Australian plate and added to the southern edge of the Asian plate. The oldest sedimentary rocks in these islands are from the Early Permian. The Banda arc-continent collision is still active and converging at a rate of 7 cm/a. It stretches from Savu through Rote, Timor, Leti, Babar, Tanimbar, and the Kai Islands, before turning west to Seram, Ambon, and Buru. The outer arc is geologically associated with the Australian continent, though it is a more recent accretion than the neighboring Aru Islands.
The island of Timor provides an excellent landscape for understanding the arc-continent collision that is taking place. Although previous interpretations of the island of Timor have placed it as an accretionary wedge, it is in fact a mixture of Banda fore-arc volcanic rocks and the Australian continental margin.
The resulting feature is a 180-degree island arc, which is more than 1,000 kilometres (620 miles) long. Geographically, it stretches across eastern Indonesia, and is delimited by an active inner volcanic arc. The outer arc contains numerous islands, and its internal geologic structure contains young oceanic crust exclusively.
See also
Weber Deep
Banda Sea plate
List of islands of Indonesia
Oceanic trench
Plate tectonics
Sunda Arc
Sunda Islands
Greater Sunda Islands
Lesser Sunda Islands
Sundaland
Sunda Trench
References
Audley-Charles, MG (1986). "Timor–Tanimbar Trough: the foreland basin of the evolving Banda orogen". Spec. Publs Int. Ass. Sediment. 8: 91–102.
Harris, RA (2011). "The Nature of the Banda Arc–Continent Collision in the Timor Region". Arc-Continent Collision. Frontiers in Earth Sciences. pp. 163–211. doi:10.1007/978-3-540-88558-0_7. ISBN 978-3-540-88557-3.
Kata Kunci Pencarian:
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banda arc
Daftar Isi
Banda Arc - Wikipedia
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.
What Is The Banda Arc? - WorldAtlas
Jan 4, 2018 · Numerous islands near Indonesia make up the Banda Arc. The Banda Arc comprises of a set of island arcs. This horseshoe-shaped arc lies in Eastern Indonesia. The arc lies at the center of three major tectonic plates. These plates are the Pacific, Eurasia, and Indo-Australian plates.
The Geology of Indonesia/Banda Arc - Wikibooks
Jan 20, 2025 · The Banda Arc, a west facing horse-shoe shaped arc in eastern Indonesia, defines the locus of three converging and colliding major plates, the Indo-Australia Plate, the Pacific Plate, and the Eurasian Plate. Splinters of the Mesozoic southern Tethyan crust now form the base of the Banda Sea.
Surface deformation and slab–mantle interaction during Banda arc ...
Jul 25, 2010 · The Banda arc represents an outstanding example of large-scale deformation of the Earth’s crust in response to coupling between the crust, slab and surrounding mantle.
Discovery of biggest exposed fault on Earth solves mystery of …
Nov 29, 2016 · However, the Weber Deep is a forearc basin, which is basically a depression located in front of the Banda arc, a curved chain of volcanic islands. So how did this basin end up becoming like a...
Indonesia's puzzling Banda arc: New findings explain mystery …
Jul 27, 2010 · The Banda arc -- a gigantic 1,000km long, 180-degree curve in eastern Indonesia -- has puzzled geologists for many years, with much debate and controversy surrounding its complex...
Movements, collisions and the Banda Arc – Wallacea and …
The Banda Arc represents an example of large-scale deformation of the Earth’s crust. The curved Banda arc comprises young oceanic crust enclosed by a volcanic inner arc, outer arc islands and a trough parallel to the Australian continental margin (Spakman & Hall, 2010).
Banda Arc: broadband 2D seismic unlocks frontier area
Apr 17, 2020 · CGG’s high quality BandaSeis 2D seismic data set, acquired and recently reprocessed with the latest imaging technology, and accompanying comprehensive Jumpstart™ geological study enhance the exploration potential of the Banda Arc region.
Banda Arc Experiment—Transitions in the Banda Arc‐Australian ...
Sep 7, 2016 · The Banda arc seismic experiment was designed to unravel some of the complex dynamics of convergent tectonics. This passive source experiment is composed of 30 broadband instruments that extend across the Nusa Tenggara Timur region of …
Banda Arc ISRA - Important Shark Ray Areas
Banda Arc is located in the Banda Sea of eastern Indonesia. It is spread across three provinces: Maluku, West Papua, and Southwest Papua. The area includes several islands (e.g., southern Maluku Islands) and bays (e.g., Kaimana). The area is highly influenced by monsoon winds (Moore et al. 2003).