ANT 2 Lecture Notes - Lecture 1: Laurasia, Neoproterozoic, Supercontinent
Document Summary
In present day, the earth is seen as a spherical landscape with 7 continents that are all surrounded by water; however, this was not always the case. The earth started off as a single supercontinent called pangea. Eventually, this piece of land broke up into two smaller pieces of land. These two smaller supercontinents went by the names of laurasia and gondwana. For the most part, laurasia stayed intact, but in the meantime gondwana was completely transforming. Around two hundred million years ago, gondwana split into four of the seven continents that people know today (antarctica, south america, africa, and australia) and a fifth one that was just discovered by scientists named mauritia. Mauritia is said to be as large as 2,040 square kilometers and has three distinct volcanic phases forming it, named the older, intermediate, and younger phases, dating from 9. 0 ma to. Also in the samples of mauritia there is evidence of.
