GEO 330 Lecture Notes - Lecture 3: Asthenosphere, Structure Of The Earth, Seismic Wave
1 Feb 2018
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Mars, like earth has a core, mantle, and crust. The planetary interior can also be divided by its physical properties. The lithosphere is rigid and contains the upper part of the mantle and the crust. The asthenosphere is more plastic and is comprised of the deeper mantle. Mantle convection has a major impact on surface geology. There is no evidence for plate tectonics on mars. The internal composition of mars is reflected by the composition of the volcanic materials on the surface. Mars, and all planets, work to lose heat over time. Planets release heat through volcanism and (potentially) plate tectonics. In order for planetary bodies to melt and be volcanically active, heat sources are required. Moment of inertia describes the distribution of mass outward from the center of an object -- in this case, a disk. For a sphere (cid:651) (cid:652) for a disk. Two basic ways to study the martian interior:
