Earth Sciences 2281A/B Midterm: ES 2281B Geology Midterm Exam Study Guide
3 Apr 2017
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Document Summary
Scientific study of the planet earth: materials, processes, products, history of planet and its lifeforms since origin. Uniformitarianism key principle of modern geology: physical, chemical, and biological laws that operate today have also operated identically in the geologic past. Earth"s interior (fig 1. 5: crust (rigid, <1000 c, mantle (plastic, 1000-2500 c, outer core (liquid, 2500-3900 c, inner core (solid, >3900 c, lithosphere, asthenosphere. Theory of plate tectonics internal processes: lithosphere consists of plates, which move relative to one another, sliding on the underlying asthenosphere, diverging boundaries and mid-oceanic ridges, transform boundary, converging boundary and subduction zones. Earth sciences 2281b midterm review: igneous and metamorphic rock, the rock cycle. Silica tetrahedron & common silicate structures: si and o are the two most abundant elements in the earth"s crust, si and o combine to form the basic building block for common minerals. Types of silicate minerals: single chains share 1 oxygen, double chains share 2 oxygen, sheet structures share 3 oxygen.
