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# 211627 4-Apr-2017 20:26
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Published in March

http://www.geosociety.org/gsatoday/archive/27/3/article/GSATG321A.1.htm



Short version: Zealandia is a continent, that 94% submerged

Long version: "A 4.9 Mkm2 region of the southwest Pacific Ocean is made up of continental crust. The region has elevated bathymetry relative to surrounding oceanic crust, diverse and silica-rich rocks, and relatively thick and low-velocity crustal structure.

Its isolation from Australia and large area support its definition as a continent—Zealandia. Zealandia was formerly part of Gondwana.

Today it is 94% submerged, mainly as a result of widespread Late Cretaceous crustal thinning preceding supercontinent breakup and consequent isostatic balance.

The identification of Zealandia as a geological continent, rather than a collection of continental islands, fragments, and slices, more correctly represents the geology of this part of Earth.

Zealandia provides a fresh context in which to investigate processes of continental rifting, thinning, and breakup."


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  # 1756607 4-Apr-2017 20:44
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Very cool. I read that when it came out. Interesting stuff. 


gzt

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  # 1756624 4-Apr-2017 21:03
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gzt

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  # 1756625 4-Apr-2017 21:04
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gzt

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  # 1756627 4-Apr-2017 21:05
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gzt

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  # 1756633 4-Apr-2017 21:18
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Those visualisations made my day. Had to share : ).

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  # 1756680 5-Apr-2017 01:03
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sorry don't understand how they define the continent - is there an underwater land mass that I'm missing?





Swype on iOS is detrimental to accurate typing. Apologies in advance.


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