Refining Rodinia: Geologic Evidence for the Australia–Western U.S. connection in the Proterozoic

• DOI: 10.1130/gsat-1999-10-01-science
• Publication Date: 2020-04-28T18:55:16Z
• Authors: Karl Karlstrom
• Keywords: Laurentia; Rodinia; Supercontinent; Baltica

Prior to the Grenvillian continentcontinent collision at about 1.0 Ga, southern margin of Laurentia was a long-lived convergent that extended from Greenland California.The truncation these 1.8-1.0Ga orogenic belts in southwestern and northeastern suggests they once farther.We propose Australia contains continuation southwest Baltica northeast.The combined system comparable length modern American Cordilleran or Alpine-Himalayan systems.This plate reconstruction Proterozoic supercontinent Rodinia called AUSWUS (Australia-Southwest U.S.) differs well-known SWEAT (Southwest U.S.-East Antarctic) Australia, rather than northern Canada, is adjacent United States.The supported by distinctive "fingerprint" geologic similarities tectonic histories between States 1.8 0.8 better agreement 1.45 Ga paleomagnetic poles for Laurentia.