Constraining the age of the Grizzly Creek Shear Zone, Glenwood Canyon, Colorado

CHED 286

Megan L Mekoli, meko0005@mrs.umn.edu, Division of Science and Mathematics, University of Minnesota, UMM Mail #1869, 600 E. 4th St., Morris, MN 56267 and Robert E Goodfellow, Department of Geology, University of Minnesota, Morris Campus, Department of Geology, University of Minnesota, UMM Mail #966, 600 E. 4th St., Morris, MN 56267.
The research done here is a field- and laboratory-based study to determine the age and tectonic significance of the Grizzly Creek Shear Zone (GCSZ). The GCSZ is a recently discovered zone of concentrated crustal deformation in western Colorado which records important geological evidence regarding the tectonic history of Colorado and the formation of North America. However, the age of deformation and the true significance of the highly deformed rocks are not well understood. This past summer, we collected rocks to constrain the age of in the laboratory using a Laser Ablation Inductively Coupled Plasma Mass Spectrometer (LA-ICP-MS) at the University of Texas, Austin. The basic field work has been done, but the laboratory analysis will take place in January of this coming year, so results are pending. The poster will highlight techniques used in conjunction with the LA-ICP-MS as it pertains to this research and also a small portion on fieldwork.
 

Undergraduate Research Poster Session: Analytical Chemistry
11:00 AM-1:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster

Division of Chemical Education

The 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007