Forearc
A forearc is the region between an oceanic trench and the associated volcanic arc. As such, forearc regions are found at convergent margins, and include any accretionary wedge and forearc basin that may be present. Due to tectonic stresses as one tectonic plate rides over another, forearc regions are sources for great thrust earthquakes
Formation
During subduction, an oceanic plate is thrust below another tectonic plate, which may be oceanic or continental. Water and other volatiles in the down-going plate cause flux melting in the upper mantle, creating magma that rises and penetrates the overriding plate, forming a volcanic arc. The weight of the down-going slab flexes the down-going plate creating an oceanic trench. The area between the trench and the arc is the forearc region, and the area behind the arc (i.e. on the side away from the trench) is the back-arc region.
Initial theories purposed that the oceanic trenches and magmatic arcs were the primary suppliers of the accretionary sedimentation wedges in the forearc regions. More recent discovery suggests that some of the accreted material in the forearc region is from a mantle source along with trench turbidites derived from continental material. This theory holds due to evidence of pelagic sediments and continental crust being subducted in processes known as sediment subduction and subduction erosion respectively.
Podcasts:
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by Glee Cast
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by Kind Of Like Spitting
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by Seether
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by Katy Perry
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by The Butchies
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by Lower Than Atlantis
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by Thyrane
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by My Ticket Home
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by Hopes Die Last
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by Karmin
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by Sam Tsui
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by Despite My Deepest Fear
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by Butchies
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by Faakhir
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by Future Idiots
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by Chris Sligh
Firework
by: Glee CastFeaturing: Katy PerryDo you ever feel like a plastic bag
Drifting throught the wind
Wanting to start again
Do you ever feel, feel so paper thin
Like a house of cards
One blow from caving in
Do you ever feel already buried deep
Six feet under scream
But no one seems to hear a thing
Do you know that there's still a chance for you
Cause there's a spark in you
You just gotta ignite the light
And let it shine
Just own the night
Like the Fourth of July
Cause baby you're a firework
Come on show 'em what you're worth
Make 'em go "Oh, oh, oh!"
As you shoot across the sky-y-y
Baby you're a firework
Come on let your colors burst
Make 'em go "Oh, oh, oh!"
You're gunna leave 'em goin' "oh, oh, oh"
You don't have to feel like a waste of space
You're original, cannot be replaced
If you only knew what the future holds
After a hurricane comes a rainbow
Maybe you're reason why all the doors are closed
So you could open one that leads you to the perfect road
Like a lightning bolt, your heart will blow
And when it's time, you'll know
You just gotta ignite the light
And let it shine
Just own the night
Like the Fourth of July
Cause baby you're a firework
Come on show 'em what you're worth
Make 'em go "Oh, oh, oh!"
As you shoot across the sky-y-y
Baby you're a firework
Come on let your colors burst
Make 'em go "Oh, oh, oh!"
You're gonna leave 'em goin' "oh,oh,oh"
Boom, boom, boom
Even brighter than the moon, moon, moon
It's always been inside of you, you, you
And now it's time to let it through
Cause baby you're a firework
Come on show 'em what your worth
Make 'em go "Oh, oh, oh!"
As you shoot across the sky-y-y
Baby you're a firework
Come on slet your colors burst
Make 'em go "Oh, oh, oh!"
You're gonna leave 'em goin' "oh, oh, oh"
Boom, boom, boom
Even brighter than the moon, moon, moon
Boom, boom, boom