In what kind of rock would we expect to find fossils

In what kind of rock would we expect to find fossils -...

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In what kind of rock would we expect to find fossils? Sedimentary rocks. Their structure can tell us a lot about earth history. Laid down in strata of sedimentary layers. Bedding planes generally mark the boundary between the end of one sediment and the beginning of another. Several logical rules can be used to determine the sequence of events: Relative dating . generally one follows several principles: superposition the older rock is below and the younger rock is above; original horizontality : the strata are laid down originally in a horizontal position (gravity is what lays them down). Thus
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Unformatted text preview: nonhorizontality must have occurred after the deposition. The cross cutting relationship states that the cut formation is older that the formation doing the cutting. Another prominent feature is an unconformity which occurs when the rate of deposition has been interrupted, the sediments eroded and deposition renewed. A clear break in the sequence of events is apparent. One type of unconformity is an angular unconformity where strata with originally horizontal bedding planes now have bedding planes that intersect. Significant because it reflects a major episode of geologic change....
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This note was uploaded on 11/06/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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