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flash cards

can be any of the six types of fossils. it tells you the geologic period of the rock layer in which it is found. index fossil film
the remains have been replaced by minerals petrified
when a mold gets filled in with solid material cast
a hollow spot in a rock left in a sedimentary layer by an organism mold
a missing layer of rock, representing missing time in a geologic sequence an unconformity
any evidence of former life fossils
sedimentary rock layers start off flay lying original horizontalty
the fragments that make up a rock are older than the rock itself included
no portion of the organism, just evidence that it lived there. trace fossil
an unchanged shell, tooth, etc.. Original remains
younger layers sit on top of older layers the law of
cutting relationships formations cut across older cross
A. easily recognized B. global Distribution C. lived for a brief period of time Three properties of an? index fossil
events are in the sequence that they occured relative dating
how many years ago is determined absolute dating
Created by: courtneybaby95