barry is applying the principles of relative dating to a building that has been constructed. analyzing a section of the building, barry
says that the lowest part of the section must have been constructed
the parts above it were constructed. he
bases this conclusion on the principle of
. also, looking at a crack forming in the building wall, he says
that the crack must be
the wall. barry used the principle of
to arrive at this
conclusion.
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2010
11

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.