Woodbury impact structure

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THE WOODBURY STRUCTURE: REMAINS OF A LATE
PROTEROZOIC (?) PEAK-RING IMPACT CRATER IN
WEST-CENTRAL GEORGIA, USA

“The Woodbury structure” has been used to
refer to a 7-km wide circular depression (32.92º’N; 84.54ºW)
within the Pine Mountain terrane of west-central Georgia [1].
Quartzite breccias collected inside the basin contain evidence of
altered pseudotachylites, coesite, and possible planar deformation
features (PDFs) in quartz and zircon [1, 2]. Based on those observations, we have proposed that the structure resulted from an
impact sometime between the Late Proterozoic and Alleghanian
tectonism.

R. S. Harris, E. F. Albin, S. J. Jaret, R. E. Jarrett, G. Jirak,
D. T. King, Jr., and G. Mauldin-Kinney. Department of Geosciences, Georgia State University, Atlanta, Georgia 30302. Email: rsharris@gsu.edu. Fernbank Science Center, Atlanta, Georgia 30307. Department of Earth and Planetary Sciences,
Harvard University, Cambridge, Massachusetts 02138. Department of Geology and Geography, Auburn University, Auburn, Alabama 36849.

adsabs.harvard.edu/abs/2010M%26PSA..73.5415H