ENV-1010 Lecture Notes - Lecture 13: Whistle Rymes, Lithification
13 Sep 2016
School
Department
Course
Professor
Document Summary
Soils: soils are formed by weathering of pre-existing rocks, minerals and organic matter by exposure to surface conditions. Who cares: soils are needed to support primary producers (plants, no producers = no consumers! Regular atomic arrangement (got to form crystals) Approximately 92% of all minerals are silicates. Other 8% are oxides, sulfides, and carbonates. Many of these are also used as resources. Rocks: combination (one or more) of minerals, classified by how they are formed. Formed by cooling and crystallization of molten material: metamorphic rocks. Formed by exposing pre-existing rock to health and/or pressure below its melting rock: sedimentary rocks. Formed by exposure of pre-existing rocks to weathering, erosion, transportation, deposition, and lithification (all processes that convert sediments to rock) When organisms die in areas where sediments are formed, their remains accumulate and are incorporated into rocks. When you find fossils in rocks they are referred to as fossiliferous sedimentary rocks.
