EESA06H3 Lecture Notes - Lecture 10: Supercontinent Cycle, Iapetus Ocean, Eastern Canada
Document Summary
Layer one is the oldest (precambrian), made up of many collisions. Layer 2 was formed when it was closest to the equator. Layer 3 was formed from sediments gathered after episodes of glaciatoion and interglaciation. Ca(cid:374)ada"s geology is (cid:373)ade up of 4 layers. Grenville orogeny is the collision that finished off the building of the north american craton. Break up of rodinia formed the canadian shield and north american craton. Uplifts took place making rifts and oceans such as iapetus ocean, formed after the break up of. Closing of the iapetus ocean caused the continents to come together as the ocean subducted, formation of pangea. Before rodinia there was a continent called artica in the middle of present hudson bay, originally oceans were surrounding artica, subducting of the oceans caused other continents to added to artica making it bigger (penokean orogeny)
