EESA10H3 Lecture Notes - Lecture 1: African Plate, Supercontinent Cycle, Supercontinent
22 Oct 2017
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Eesa06h3- lecture 01 living on an active dynamic. Uperco(cid:374)ti(cid:374)e(cid:374)t called pa(cid:374)gea: i(cid:374) greek it (cid:373)ea(cid:374)s (cid:862)all the la(cid:374)d(cid:863) Earths surface is relatively cool, and cool rocks tend to be very brittle (can break them); broken into plates and the plates are mobile. Continents are embedded in the plates which are mobile. Every part of the earths surface is on the move. There was a supercontinent before pangea and so on; we can point these supercontinents 3. 3 billion years back. 600 million years: as a species we originated in a rift in the african plate. Choose the direction of movement and the length of the arrow gives you some idea of velocity. A lot of friction and stress produces breakage in rocks and this is why we have earthquakes. Deep under water and formed by plate tectonics; consists of various mountains linked in chains, typically having a valley known as a rift running along its spine.
