GEOL 103 Lecture Notes - Lecture 12: Shocked Quartz, Sea Level Rise
30 May 2018
School
Department
Course
Professor
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GEOL 103
Spring 2018 AEC Notes
Prof: Davis
5/9/18 (Week 6, Class #12) Wednesday
Notes for the exam:
● Precambrian-- just land, nothing else (no plants)
● No limbs during the
● Sponges are basal animals, not our ancestors, we have a common ancestor, not
direct
● All living things are subject to evolution and natural selection
● Secondary animals are often smaller because they need to use energy to move
GO to office hours for exam help/credit back?
Group Work, Today
● Mass Extinctions
● Generating and testing hypothesis (what kind of data would you look for to
prove your hypothesis)
● Sequence of earth history events at the level of geologic period
● Explain role of life in regulating earth’s air and water
● KT extinction
Case Study Background:
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Precambrian-- just land, nothing else (no plants) Sponges are basal animals, not our ancestors, we have a common ancestor, not direct. All living things are subject to evolution and natural selection. Secondary animals are often smaller because they need to use energy to move. Generating and testing hypothesis (what kind of data would you look for to prove your hypothesis) Sequence of earth history events at the level of geologic period. Explain role of life in regulating earth"s air and water. The triassic-jurassic boundary (200 ma) is defined by a mass extinction of both marine and terrestrial animals (70% species extinct) Extinction took place over a short period of time. Large changes in sea level and the break of if pangea both occur near the kt boundary. Land evidence, isotope evidence (iridium), life evidence (before and after kt boundary), shocked quartz. Event had to be quick, had to be able to make the changes evident (from video)
