Earth Sciences 1086F/G Lecture Notes - Lecture 8: Geology Of The Moon, Anorthosite, Escape Velocity
11 Jun 2020
School
Department
Course
Professor
Document Summary
Chapter 8: moon: product of collision b/w earth and theia. Collision result in mixing, earth getting most of the metal core of impact, leaving moon with low density, rich in silicon, al, mg, o. Tidal coupling: after collision, earth"s gravitational influence forced moon into exactly the same rotational period and orbital period as earth. Results of synchronized patter that is we see only one hemi of moon, far side never rotates into positional view. View from earth: something as small as the moon must have low escape velocity. *moon is airless and soundless face of moon turn towards is is near side . Light areas lunar highlands : composed of anorthosite rocks. Dark areas maria : solidified basalt face awaying far side . There is no maria with tons on impact craters. Asteroid: >100m-1000km: hits planet making crater that accumulates this can be used to interpret history.
