GEO 1111 Lecture Notes - Lecture 6: Lithostratigraphy, Radiometric Dating, Uniformitarianism

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GEO 1111 Full Course Notes
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** midterm is now on monday feb 8th 4-5:30. : if we put earth in a blender composition would be same as a chondrite. Two groups due to material, volatile and refractory material in solar system, volatile forms ice, creating jovian planets. The idea was that beyond the frost like, volatile material condenses and forms ice. I(cid:374) (cid:272)ho(cid:374)drite (cid:373)eteorites, there"s a lot of (cid:374)i(cid:272)kel. Whe(cid:374) you look at our earths (cid:272)rust, (cid:449)e ha(cid:448)e a deficiency of nickel. Shows that nickel is a siderphile, and stays in a metal state. Shows that segregation is due to chemical affinity as well as density. Low density compared to earth: may have had an asteroid like body, knocking into the earth, flinging a part of the mantle/crust, creating the moon. Moon died an early death, not geologically alive. (no atmosphere, no plates,) small so it lost its heat rapidly. Moon is made of highlands and maria. Highlands have more craters, assumed to be older.

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