EESA06H3 Lecture 8: Lecture 8 Notes
Document Summary
Japan is so dangerous because it has both the pacific plate and the philippine plate. The plates are locked so a lot of stress is built up. Normal plate movement would be 2. 5-3cm a year, 25 meters tells you that this accumulated movement has built up for 1000 years, japan goes east pacific plate underneath goes west. Geologic time and stratigraphy: stratigraphy is simply lining up rocks in terms of their geologic age. As you come up in the stratigraphy you get younger and younger layers. These are marine rocks they were deposited way off shore, underwater, now they"re several kilometers above land. These rocks are the right way up, the older rocks are at the bottom. Each layer may have a distinct fossil type. We can correlate the rocks we see in one location, with the rocks we see in another. Can correlate rocks in the same area, or between different areas.
