GEOL-1010 Lecture Notes - Lecture 2: Subduction, Dendrochronology, Outer Core
3 Apr 2017
School
Department
Course
Professor
Document Summary
Sedimentary processes: most common rock type at earth"s surface. Forming sedimentary rocks: parent rocks- whatever type of preexisting rock you have. Can slowly break apart sedimentary rock: frost wedging. If the temp drops below freezing point of water, the water in the cracks, when frozen, will expand as ice and break the rock. Chemical weathering: more common in many environments, most important way to break rocks down, phelsic minerals are more stable and weather the slowest, mafic minerals are least stable and weather more quickly, with water. It looks hard, but when you touch it, it will break apart in your hands. Transport process, moving the particles to different locations. Gravity: every time you have particles that roll down a hill, that"s erosion. Wind: particles blow around in the wind. Glacial ice: moves particles with it, tears through mountains. Basin: any place where sediment can be deposited, come in all shapes and sizes.
