ESS105H1 Lecture Notes - Lecture 5: Acasta Gneiss, Cambrian Explosion, Archean
Document Summary
2: younger rock is deposited on top of older rock. 3: young rock can contain pieces of an older rock. 38 (1 / 3) - relative time. 5: young rock/feature can cause changes along their contacts with older rocks. unconformities: gaps in time angular unconformity, nonconformity, disconformity principle of fossil succession: species appear and go extinct. Kingston, on principle of fossil succession: species appear and go extinct fossils: evidence for past life (body fossils and trace fossils) fossil range ex: brachiopods (clarkson) 40 - the geologic timescale combines relative and absolute time brief earth history brief earth history (read from bottom up) 42 (1 / 3) - spotlight on canada: brief earth history (read from bottom up) brief earth history today. Cambrian explosion life conquers land: plants, lungs, eggs spotlight on canada: from hot to cold climate ice ages hydrocarbon deposits in alberta formation of cordillera by accretion sea level variations formation of pangea builds appalachians.
