GEO 1111 Lecture 9: GEO1111 Lecture 9

• School: University of Ottawa
• Department: Geology
• Course: GEO 1111
• Professor: Robert Jack Cornett

Document Summary

Sediment rock fragments that settle and accumulate in layers after being transported or precipitated. Originates form mechanical/chemical breakdown of existing rock or biomaterials. Contains 100% of rock evidence of past environment such as tectonics, climate, life. Types: rock types based on source of material: detrital/classic. Left over, transported sediment as solid particles: chemical rocks. Sedi(cid:373)e(cid:374)t that pre(cid:272)ipitates fro(cid:373) sol"(cid:374) or e(cid:454)tra(cid:272)ted fro(cid:373) (cid:449)ater (cid:271)(cid:455) orga(cid:374)is(cid:373)s ((cid:272)o(cid:374)(cid:448)erted to shell/skeleton) Sedimentary process : physical features in rock tell how sed were deposited and environmental conditions of deposition: weathering (breaking down, erosion (mass wasting, transport, deposition, lithification (compaction and cementation) Physical or chemical changes (weakening and break down) that occur in rocks when they are exposed to the atmosphere and biosphere. Factor which controls weather: parent rock granite climate rain/ice, soil chemicals in soil, time. Stable on earth surfaces: less pressure and more cooler temperatures.