EESA06H3 Lecture 1: Lec notes EESA06
Document Summary
Know: basic structure of cycle, which particular supercontinent you(cid:495)re dealing with. Death of oceans- toward the next supercontinent: continents grow in size, oceanic crust adds on to continents, we are living in a super glacial now. Ice age- because of collision between india and asia, ocean closure, and building of the himalayas: pacific rim of fire: This consumers ocean floor crust faster than which it is being produced at the mid ocean ridge. This pulls continent towards the closing ocean and eventually closes the ocean. Widespread ocean closure 1 billion years ago to form rodinia (supercontinent) when new crust was added to eastern north america (e. g. much of ontario) The life cycle of oceans: pangea will form in 250 million years as oceans close. Volcanoes and earthquakes characteristic of a closing ocean: volcano comes from vulcano, the first island north to sicily to have a volcanic eruption.
