GEOL 104 Lecture Notes - Peridotite, Continental Crust, Paleoclimatology

• School: Queen's University
• Department: Geological Sciences and Geological Engineering
• Course: GEOL 104
• Professor: Michael T.Mc Bride

Document Summary

Depth to the core was already known, however, nuclear testing gave a more accurate depth. Upper mantle (asthenosphere) is not liquid. it is plastic - capable of flow. The lower mantle is rigid and solid. Waves slow down when they go from the lithoswphere to the upper mantle (asthenosphere) The lithosphere goes to about 100km. upper mantle goes down to about 700km. We need to know that the upper mantle is called the asthenosphere. The lower mantle is called the mesosphere. The lithosphere includes the crust and the solid portion of upper mantle. Go to the earth"s crust diagram in the notes pg93. Add moho boundary, gutenberg boundary and lehmann boundary. Continental crust is pretty much granite (33km) The ocean is pretty much basaltic (5-8km) The mantle is ultramafic, peridotite (mostly fe, mg, si, o. Proof of plate techtonics: continental fit fossil evidence.