volcanic arc


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Related to volcanic arc: accretionary wedge, Fracture zone

volcanic arc

[väl‚kan·ik ′ärk]
(geography)
References in periodicals archive ?
These samples are distinct from normal ocean floor lavas and geochemically identical to the presently active South Sandwich Islands volcanic arc to the east of the Scotia Sea that today forms a barrier to the ACC, diverting it northward.
The Northern Volcanic Zone (NVZ) of Colombia is defined by a narrow volcanic arc located above the Benioffzone that overlies the steeply subducting slab dipping about 45[degrees] to the east (Ojeda and Havskov, 2001) (Figure 5).
Our geological mapping recognises the eastern and western Yidun Volcanic Arc to be two distinct subterranes.
Kellogg et al(1995) used flexural models 2D employing a fractured plate, obtaining a value of effective elastic thickness between 20 and 25 km below volcanic arc and 60 km for mountain belt placed at north of volcanic arc.
At some distance from the trench, an arcuate chain of volcanoes, or volcanic arc, is developed above the subduction zone, fuelled by magma rising from above the subducting slab.
The younger, Popelogan volcanic arc started about early to middle Arenig after obduction of the Penobscot Arc was completed (van Staal et al.
Together, these domains comprise what is generally called a volcanic arc, and contain some of the most dynamic tectonic environments on Earth.
It is located in the active Halmahera volcanic arc and the mineralization is hosted by a potassic altered and magnetite bearing tonalite porphyry stock.
The Mariveles, Bataan, geothermal area is on the West Luzon Volcanic Arc, which starts from Mt.
The property area is within a portion of the Quesnel Trough, an Upper Triassic to Jurassic volcanic arc sequence.
It is shown that gold deposits of the Cretaceous Volcanic Arc of Cuba largely consist of native gold, telluride and pyrite, where arsenopyrite is almost absent.