Slideshow 101.13 Sedimentary Rocks - Soils, Classification

Slideshow 101.13 Sedimentary Rocks - Soils, Classification...

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Sedimentary Rocks and Environments Sedimentary Rocks and Environments Sedimentary Rocks Sedimentary Rocks Overview Overview Weathering Weathering Soil Soil Classification of Sedimentary Rocks Classification of Sedimentary Rocks Sedimentary Structures Sedimentary Structures Sedimentary Environments Sedimentary Environments Sedimentary Basins Sedimentary Basins
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Sedimentary Rocks and Environments Sedimentary Rocks and Environments Sediment:  unconsolidated particles created by the weathering  and erosion of rock, precipitated from water, or secretions of  organisms. …once formed, sediment can:   be transported be deposited and lithify evolve into soil Note: 75 to 80% of the earth’s surface is covered by Sedimentary rock!
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Sedimentary Rocks and Environments Sedimentary Rocks and Environments Soil:  S e dim e nt tha t ha s  unde rg o ne  c ha ng e s  a t the  s urfa c e   o f the  Ea rth, inc luding  re a c tio n with ra inwa te r a nd  the  inc o rpo ra tio n o f o rg a nic  m a te ria l, s o  tha t it c a n s uppo rt the  g ro wth o f pla nt life .   C o nta ins  s o lids , liq uids  a nd g a s e s , ha s  ho rizo ns  o r  la ye rs , a nd is  dis ting uis ha b le  fro m  the  pa re nt m a te ria l fro m  whic h it is  de rive d.
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Sedimentary Rocks and Environments Sedimentary Rocks and Environments   1) Anim a ls , pla nts , m ic ro b e s  a nd  fung i inte ra c t with the   s e dim e nt, a b s o rb ing   nutrie nts  a nd le a ving  b e hind  wa s te  a nd re m a ins . 1) Wa te r pe rc o la te s  do wnwa rd, re dis trib uting  c la y  pa rtic le s  a nd io ns . 1)  Burro wing  o rg a nis m s  (wo rm s , a nts , m o le s ) c hurn a nd  m ix the  m a te ria l the y m o ve  thro ug h in a   pro c e s s  c a lle d  “b o iturb a tio n”. Three processes that contribute to the formation of soil are:
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Sedimentary Rocks and Environments Sedimentary Rocks and Environments Organisms interact Water percolates Zone of Leaching   ions are carried    downward Zone of accumulation   new minerals form   (precipitate) and    fine clay accumulates.
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Sedimentary Rocks and Environments Sedimentary Rocks and Environments Soil “Profile” Ho rizo ns : O  – m o s tly Hum us  (pa rtia lly  de c a ye d O rg a nic  m atte r) A1  – de c a ye d hum us  +
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Slideshow 101.13 Sedimentary Rocks - Soils, Classification...

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