GSC 101 Lecture Notes - Lecture 2: Kola Superdeep Borehole, Continental Crust, Chondrite

• School: University of Miami
• Department: Geological Sciences
• Course: GSC 101
• Professor: leech

Document Summary

Digging holes in the earth= kola borehole 12,000m or 7. 6 miles deep. The thinnest continental crust of the earth is about 10-15 miles deep. Mantle rocks at the earth"s surface= altered by volcanic and tectonic processes and changes them into something new. Weighing the earth and implications for the earth"s interior= the earth would be way lighter if it were made of strictly rocks. Composition of crust and mantle vs. core= the stony stuff floats to the top and the heavier metal sinks to the bottom. Earth"s magnetic field= the earths molten iron core swirling around makes this.