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Author Topic:   Introduction To Geology
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Message 183 of 294 (675549)
10-12-2012 10:43 AM
Reply to: Message 173 by petrophysics1
10-06-2012 5:01 PM

Re: Unconformities
BTW you can not see a jump in fauna across a noncomformity.....because there aren't any fossils in igneous or metamorphic rocks.

Not necessarily. You can preserve fossils in contact metamorphosed sedimentary units, and the thermal budgets of cooling plutons can be large enough for erosional surfaces to be identified as nonconformities.

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 Message 173 by petrophysics1, posted 10-06-2012 5:01 PM petrophysics1 has not yet responded

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