Type s o f fo s s ilizatio n C arbo nizatio n c he m ic al re ac tio n whe re

Type s o f fo s s ilizatio n c arbo nizatio n c he m

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Type s  o f fo s s ilizatio n   C arbo nizatio n  c he m ic al re ac tio n whe re  wate r trans fo rm s  the  o rg anic   m ate rial o f plant o r anim al to  a thin film  o f c arbo n.  Nitro g e n, hydro g e n, and o xyg e n are  drive n o ff as  g as e s ,  le aving  an o utline  o f the  o rg anis m .   fis h, le ave s  and the  wo o dy tis s ue s  o f plants .   Mo lds Ho w are  fo s s ils  pre s e rve d?
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Type s  o f fo s s ilizatio n  Trac e  fo s s ils  trac ks  trails  burro ws  bo ring s Ho w are  fo s s ils  pre s e rve d?
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Appropriate characteristics of fossils used for correlation (Zone Fossils)(1) Easily preserved bones and shells, not jellyfish! Easily identified distinctive characteristics, as with ammonites, that are better than freshwater clams
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Appropriate Characteristics of Zone Fossils (2) Abundant forams are better than dinosaurs Geographically widespread to enable long distance correlation Environmentally tolerant facies independent
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Commonly used groups of fossils include: graptolites, trilobites (Paleozoic) corals, brachiopods (Paleozoic) goniatites (Paleozoic) ammonites (Mesozoic)
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Commonly used groups of fossils include: microfossils calcareous nannofossils (Cretaceous & Cenozoic) conodonts (Paleozoic) forams (Cenozoic) pollen and spores
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Petroleum Micropaleontology The petroleum industry uses microfossils (particularly forams) because they are small and abundant, so that large numbers can be recovered from well cuttings
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