GGR112H5 Lecture Notes - Lecture 14: Convergent Boundary, Continental Crust, Jigsaw Puzzle
Document Summary
Ggr112 lecture 14 tectonics, earthquakes & volcano. Tectonic activity (caused by internal energy) + weathering and erosion (caused by sun through motion of air, water, ice /external) Deformed strata sedimentary rock folded and twisted currently: some are upward curving, marine fossils found in upper rocky mountains, jigsaw puzzle continents fit together however, they are drifted. Proposed theory of continental drift in 1915. Said the land was shell that could be drifted by fluid. Fossils were collected from several parts of the world when pangea was still together south was called gondwanaland: similar climatic/geographic zones had similar species. No physical mechanism for continental drift had been proposed during wagner"s time he died in 1930 but his theory was accepted in. To generate convection, a thermal rise is needed. There is deep high temperature in the earth"s core, could have been used to pull apart the land. Transform 2 plates moving past each other side by side.
