Petrification: The small internal cavities in pores of an organ organism that ar

Question

Petrification: The small internal cavities in pores of an organ organism that are filled with precipitated mineral matter . Photo(s) Cast: carbonization: impression: amber: indirect evidence: 9.6 Fossils Fossils, the remains or traces of prehistoric life, are among the most important tools for interpreting the geologic past. Knowing the nature of the life-forms that existed at a par ticular time helps researchers understand past environmental conditions. Fossils are also valuable time indicators ACTIVITY 9.6 Types of Fossils 1. Refer to FIGURE 9.13. Which photo(s) (A-I0) best illustrate(s) the methods of fossilization or fossil evidence listed below? (Photos/letters may be used more than once.) Petrification: The small internal cavities and pores of an original organism that are filled with precipitated mineral matter. Photo(s): Cast: The space once occupied by a dissolved shell or other structure is subsequently filled with mineral matter Photo(s): Carbonization: Preservation that occurs when fine sediment encases delicate plant or animal forms and leaves a residue of carbon. Photo(s): Impression: A replica of an organism, such as a leaf, left in fine-grained sedimentary rock.Photols): Amber: Hardened resin of ancient trees that preserved delicate organisms such as insects. Photo(s): Indirect evidence: Traces of prehistoric life but not the organism itself. Photo(s): A. shrimp) B. Fossilized wood C. Fossil bee D. Fossil brachiopods E. Dinosaur track F. Trilobite fossi G. Fossil dung H. Fossil spider L Fossil fish FIGURE 9.13 Various types of fossilization. (Photos A and F by Dennis Tasa; photo C by National Park Service; photo H y Calin Kindersley; other photos by E. J. Tarbuck)

Explanation / Answer

patrification -

fossil brachiopod , in brachiopod fossil we dont find any hard part but the replaced part.

fossilised wood , the fossilised wood is the replaced part of wood . there is no such wood present all replaced by sediments,

fossile dung - their original composition replaced by mineral deposites

IMPRESSION

Trilobite fossil - trilobites are soft fossil which give their impression on the muddy sediments

fossil fish - fossile fish also give the impression on the muddy sediments

dinosaur track . they gave their impression of movement.

fossile bee- they have their impression on the rock

AMBER

fossil spider - spider is totally preserved inside the minral.

crustacean. it is also reserved in the minerals

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