GEOL 1001 Chapter : Geology Chapter 12
Document Summary
Alpine-himalayan chain: largest orogenic belt on earth today, formed by collisions of the former. Gondwana continents with the southern margins of europe and asia. Ancestral rockies: the late paleozoic uplifts of the rocky mountain region. they eroded away long before the present rocky mountains formed. Archean eon: the middle precambrian eon; continental crust formed from colliding volcanic arcs and hot-spot volcanos, oceans filled, life formed. Basin and range province: a broad, cenozoic continental rift that has affected a portion of the western united states in nevada, utah, and arizona. in this province, tilted fault blocks form ranges, and alluvium-filled valleys are basins. Banded iron formation (bif): iron-rich sedimentary layers consisting of alternating gray beds of iron oxide and red beds of iron-rich chert. Ediacaran fauna: multicellular invertebrate organisms that lived perhaps as early as 620 ma and certainly by 565 ma. They were named for a region in south australia.
