ESS105H1 Lecture Notes - Lecture 10: Glacial Lake Iroquois, Seismic Tomography, Juan De Fuca Plate
Document Summary
10. geology of canada: geology of canada geologic map of canada. Canadian shield reveals record of supercontinents, subduction, climate change, impacts, Archean provinces ex: superior from subduction-related collision of island arcs (granite-greenstone belts) with in sediments in between supercontinents: 74 (1 / 3) - pc supercontinents: Proterozoic mountain belts glue archean provinces together ( united plates of america , Sudbury impact (10 km meteorite, 250 km crater) ~500 myr missing shallow seas came and go. Silurian: sea level rises reef carbonates rock layers exposed into niagara gorge assembly of pangea. 76 (2 / 3) - rock layers exposed into niagara gorge. Mesozoic: atlantic opens, high oceans, rockies form opening of atlantic (rifting in east) Mesozoic high ocean levels (alberta badlands, dinosaurs, potash, salt) formation of rockies and accreted terranes in west. 77 (1 / 3) - formation of rockies and accreted terranes in west. Thompson rivers (boundary between coast and intermontane belts)
