Slide Mountain Ocean

{{Short description|Ancient ocean between the Intermontane Islands and North America}} [[File:Intermontane arc.png|thumb|upright=1.5|alt=|Plate tectonics of the [[Intermontane Islands]] arc 195 million years ago]]

The '''Slide Mountain Ocean''' was an ancient [[ocean]] that existed between the [[Intermontane Islands]] and [[North America]]<ref name="Burke Museum">{{cite web |url=http://www.burkemuseum.org/geo_history_wa/The%20Omineca%20Episode.htm |title=The Omineca Episode (180-115 million years ago) |website=Burke Museum |archive-url=https://web.archive.org/web/20160810042246/http://www.burkemuseum.org/geo_history_wa/The%20Omineca%20Episode.htm |archive-date=10 August 2016 |url-status=live |access-date=19 June 2016 }}</ref> beginning around 245 million years ago in the [[Triassic]] period. It is named after the [[Slide Mountain terrane]], which is composed of rocks from the ancient oceanic floor.<ref name="Burke Museum"/> There was a [[subduction zone]] on the Slide Mountain Ocean's floor called the [[Intermontane Trench]] where the [[Intermontane Plate]] was being subducted under North America. The floor of the Slide Mountain Ocean was pushed up onto the ancient margin of North America.

==References== {{Reflist}}

[[Category:Historical oceans]] [[Category:Triassic paleogeography]]