EESA06H3 Lecture Notes - Lecture 9: Thrust Tectonics, Grenville Orogeny, Stromatolite
23 Apr 2018
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Lecture 9: notes: continents grow through time; they expand, and we can recognize 5 stages (arctica (2. 7. Lead can slowly leak out of the crystal, so that when we measure the amount of lead in the lab, we"re not getting the accurate amount. When collisions are at their maximum, when widely dispersed continents start to come together to form these supercontinents: detrital zircons are freshly made zircons in magmas which create volcanic rocks but breakup when they get weathered. The third arm will fail and that waterway between greenland and baffin island is a failed rift. Oceans that didn"t grow and stayed put: oceanic crust - oceanic crust that"s being subducted down below the nain crater, on the. It"s being added to eurasia to produce a larger landmass: cratonization - is a key geological process to form stable continental masses with a considerable scale.
