Ocean-Continent Collisions John Louie Geol 333 Spring 2001.

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Presentation transcript:

Ocean-Continent Collisions John Louie Geol 333 Spring 2001

Purpose n Provide Examples of How Mountain-Building Depends on Oceanic-Plate Features n Topographic and bathymetric images derived from Eartha Global Explorer, Copyright 1998 by DeLorme Inc., Yarmouth, Maine. n New Zealand example from work by Louie, Henrys, and Bannister of UNR and the Crown Institute for Geological and Nuclear Sciences, New Zealand.

Topics n Oceanic Trenches n Oceanic Plateaus n Next Topics: u Continental Collision u New Zealand and the Hikurangi Trough

Oceanic Trenches n Andes

Oceanic Trenches n Chile

Oceanic Trenches n Chile

Oceanic Trenches n Chile

Oceanic Trenches n Chile

Oceanic Trenches n Cascadia

Oceanic Trenches n Cascadia

Oceanic Trenches n Cascadia

Oceanic Trenches n Cascadia

Oceanic Trenches n Cascadia

Oceanic Trenches n Cascadia

Oceanic Trenches n Cocos Plate

Oceanic Trenches n Central American close-up

Oceanic Trenches n Costa Rica

Oceanic Trenches n Costa Rica

Oceanic Trenches n Nicaragua Subduction Wedge

Oceanic Trenches n Costa Rica Subduction Wedge

Oceanic Trenches n Japan - Philippine Sea

Oceanic Trenches n Japan - Philippine Sea

Oceanic Trenches n Japan - Philippine Sea

Oceanic Trenches n Underplating

Oceanic Trenches n Japan - Philippine Sea

Oceanic Trenches n Japan - Philippine Sea

New Zealand and the Hikurangi Trough n Australia–Pacific Plate Boundary

Oceanic Plateaus n Ontong-Java

Oceanic Plateaus n Ninety-East Ridge

Oceanic Plateaus n Kerguellen

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