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RE: New Geologic Epoch
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu]
> On Behalf Of David Marjanovic
> > > Other proposals to the ICS include mucking about with the
> > > Carboniferous (again...)
> How? Reversing the silly "subera" designation for the
> Mississippian and the Pennsylvanian that means the
> Carboniferous now has 5 epochs consisting of 1 stage each
> (some of them very long!) and 1 epoch consisting of a
> whopping 2 stages?
A Lower C (Tournaisian & Visean), Middle C (Serpukhovian, Bashkirian,
Moscovian), and Upper C (Kaslmovian, Gzhelian) Epoch BUT a Mississippian
(Tournaisian-Serpukhovian) and Pennsylvanian (Bashkirian-Gzhelian)
> > > and the Cambrian (again...)
> Well, in the Cambrian there isn't a lot to muck about with...
> 2/3 of the stages and half of the epochs don't even have
> accepted names yet...
Even though a lot of them once did have perfectly good names... The new
organization has an Early Cambrian Epoch that contains both the Terreneuvian
Series and Series 2, a Middle Cambrian with Series 3, and a Late Cambrian
with the Furongian Series. (So that Epochs are no longer the geochronologic
expression of chronostratigraphic Series).
Thomas R. Holtz, Jr.
Email: email@example.com Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Faculty Director, Earth, Life & Time Program, College Park Scholars
Mailing Address: Thomas R. Holtz, Jr.
Department of Geology
Building 237, Room 1117
University of Maryland
College Park, MD 20742 USA