Definitions for forearc
fore·arc

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1. forearcnoun

   A region of raised rock debris which forms between the subduction zone and any associated volcano or volcanic chain.

WikipediaRate this definition:0.0 / 0 votes

1. Forearc

   Forearc is a plate tectonic term referring to a region between an oceanic trench, also known as a subduction zone, and the associated volcanic arc. Forearc regions are present along a convergent margins and eponymously form 'in front of' the volcanic arcs that are characteristic of convergent plate margins. A back-arc region is the companion region behind the volcanic arc. Many forearcs have an accretionary wedge which may form a topographic ridge known as an outer arc ridge that parallels the volcanic arc. Between the accretionary wedge and the volcanic arc a forearc basin, sometimes referred to as an outer arc trough, may be present and can accumulate thick deposits of sediment. Due to tectonic stresses as one tectonic plate rides over another, forearc regions are sources for great thrust earthquakes.

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1. Forearc

   A forearc or forarc, also called arc-trench gap, is a depression in the sea floor located between a subduction zone and an associated volcanic arc. Typically, it is filled with sediments from the adjacent landmass and the island arc in addition to trapped oceanic crustal material. The oceanic crustal fragments may be obducted as ophiolites onto the continent during terrane accretion. The following features are recognized in a forearc. The steep inner trench wall flattens up into the upper trench slope, also known as the forearc basin. Usually a break in the slope is observed between the two areas, which can even be a small ridge called the outer ridge. The Cretaceous Great Valley Sequence, and the early Paleogene marine section overlying it in the Central Valley of California are examples of a thick section of sedimentary rocks deposited in a forearc basin. Formation of the basin began with the start up of subduction in the late Jurassic and continued into the late Paleogene when the California continental margin began to transform into the modern San Andreas Fault.

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1. care for

How to pronounce forearc?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

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   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Indian

   Priya

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   Neerja

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   Zira

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   Oliver

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   Wendy

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   Fred

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How to say forearc in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of forearc in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of forearc in Pythagorean Numerology is: 3

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References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Forearc
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Forearc
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=forearc