Southeast Pacific Ocean and Scotia Sea 50S 70W

Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
First-time Visitors: Please visit Site Map and Disclaimer. Use "Back" to return here


Scale: 1 pixel = 10 km. 10-degree grid;             Lambert Conformal Conic Projection, Center 50S 70W

       Global Geology Index



It appears your browser cannot render HTML5 canvas.

Legend

Ocean Floor Ages

Tectonic Structures

Topography

Land Geology

Notes and References

Discussion

Before Pangaea broke up, the Pacific margins of North America, South America and Antarctica were continuous and bordered by a continuous subduction zone. As the three continents rifted away from the rest of Pangaea, they also rifted apart from one another. Spreading centers formed in the gaps and bouyant, hot oceanic crust pushed eastward over the older and colder Atlantic crust. The gaps are now filled by narrow tongue-shaped plates, the Caribbean and Scotia Plates. The Antarctic Peninsula is a former continuation of the southern Andes.

Alao note the eastward protruding tongue of South America, extending beyond the Falkland Islands and connected by a megashear to South Africa. The southern Tip of Africa once fit into the re-entrant north of the Falkland Islands.


Return to Global Geology Index.htm
Return to Professor Dutch's Home Page

Created 11 April 2014, Last Update 17 October 2014
Not an official UW Green Bay site