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Re: Age of Gobi formations
I'm sorry if I seem nit-picky, but after all, science requires precision and
accuracy. Proper terminology must be used, and certain nomenclatural rules
must be followed. The Sundance Formation does NOT overlay the Buckhorn
Conglomerate, does NOT overly the Morrison Formation, and has NEVER been
considered to be Lower Cretaceous. It underlies and interfingers with parts
of the LOWER Morrison Formation and has ALWAYS been considered to be Upper
Jurassic. Perhaps you're confusing the Sundance with the Dakota Formation
(a marine unit that interfingers with the Cloverly Fm.)? At any rate, there
is no point further debating the stratigraphy of the
Sundance-Morrison-Clovery interval and its lateral equivalents when all
you'd need to do to settle this is to crack open a text or some papers on
the relevant formations. Just trying to help.
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