Greetings:
We wanted to inform you of an upcoming field trip
on Paleoproterozoic tectonics of the southwestern U.S:
Orogenic models for the Paleoproterozoic of the
southwestern US: Implications for global reconstructions
Leaders: Ernest Duebendorfer, Karl Karlstrom,
Kevin Chamberlain, Mike Williams
Date: Sunday, September 23 through Tuesday, September 25
Cost: $395.00
No. of Participants: Minimum- 20; Maximum- 30
Starting Location: Hilton El
Conquistador Golf and Tennis Resort, Tucson
Ending Location: Hilton El Conquistador
Golf and Tennis Resort, Tucson
Questions regarding the scope, content, and
logistics of the trip may be directed to Ernest
Duebendorfer [email: [log in to unmask]; phone: 928-523-7510].
Description: This 3-day field trip will focus on
the Paleoproterozoic orogens of the southwestern
U.S., and their positions within global
reconstructions. We will visit the Yavapai and
Mojave crustal provinces, Arizona. Key themes
will be (1) nature of province boundaries, (2)
deformational, metamorphic, and plutonic
histories, and (3) models for crustal growth and
assembly (arc accretion, role of transcurrent
faults, rifting and bimodal magmatism). Tentative
field localities include: Yavapai province -
Cleator shear zone, Crazy Basin, Brady Butte;
Chino Valley; Mojave province Cerbat Mountains,
and possibly Hualapai Mountains.
The trip will be in conjunction with the Arizona Geological Society Symposium:
Ores and Orogenesis: Circum-Pacific
Tectonics,Geologic Evolution, and Ore Deposits -
A symposium in honor of William R. Dickinson
Tucson, Arizona
24-30 September, 2007
In addition, on Wednesday, September 26, there will be a special session:
UNESCO IGCP SYMPOSIUM: Palaeoproterozoic Supercontinents
and Global Evolution: Ernie Duebendorfer, Karl
Karlstrom, Kevin Chamberlain, & Mike Williams, Session Chairs
Information concerning the meeting is available at http://agssymposium.org
Field Trip – Registration deadline is soon;
please sign up if you are interested
Michael L. Williams
Head, Department of Geosciences
233 Morrill Science Center
611 North Pleasant Street
University of Massachusetts
Amherst, MA 01003
Ph: 413-577-2270
FAX: 413-545-1200
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