The Sudbury impact layer in the Paleoproterozoic of northern Michigan, USA
Cannon, W. F., K. J. Schulz, J. Wright Horton, Jr., andDavid A. Kring, 2009, The Sudbury impact layer in the
Paleoproterozoic iron ranges of northern Michigan, USA.
Geological Society of America Bulletin. Ahead of Print,
September 25, 2009
http://gsabulletin.gsapubs.org/content/early/2009/09/24/B26517.1.abstract
Pufahl, P. K., Eric E. Hiatt, Clifford R. Stanley, Jared
R. Morrow, Gabriel J. Nelson, and Cole T. Edwards, 2009,
Physical and chemical evidence of the 1850 Ma Sudbury
impact event in the Baraga Group, Michigan, Geology.
vol. 35, no. 9, pp. 827-830.
http://geology.geoscienceworld.org/cgi/content/abstract/35/9/827
http://www.uwosh.edu/faculty_staff/hiatt/Research/Early_ocean/Pufahl_Ejecta_9_07.pdf
http://www.uwosh.edu/faculty_staff/hiatt/Research/Early_oceans.html
Source: Paul H., USA
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