EAPS 11200 Lecture Notes - Lecture 25: Paleoarchean, Neoarchean, Mesoarchean
Document Summary
It ends when there is no more hydrogen and then the sun expands into a big red star and turns into a white dwarf. In 1 or more of the earth"s icehouse climates, the earth had been entirely or almost entirely frozen over: could the world plunge into a snowball like it did before? a. It could hypothetically: it happened all of a sudden because co2 and other greenhouse gases were sucked out of the atmosphere. That could always just occur again: in what ways can free oxygen be released into the atmosphere, break up of water vapor into the atmosphere, describe gondwana. It was an ancient supercontinent a: was formed 550 million years ago (neoproterozoic, broke up 180 million years ago (jurassic, discuss pannotia. Redbeds were prevalent 1. 9 billion years ago but not before this time. A change from bifs to red beds remarks is significant. Part of a continent covered by flat-lying or gently tilted strata.