Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Targed Rock**  Bolid Type***
 Viewfield  Saskatchewan, Canada  N 49° 35'  W 103° 4'  2.5  190 ± 20  N  Y  S  -


Gent, M. R., Kreis, L. K. and D. Gendzwill., The Maple Creek structure, southwestern Saskatchewan. Summary of Investigations 1992, Saskatchewan Geological Survey, Rep. 92-4, p 204-208. 1992.
Grieve, R. A. F., Kreis, K., Therriault,A.M.and P.B.Robertson., Impact structures in the Williston Basin. Meteoritics and Planetary Science, v 33, n 4, p A63-A64. 1998.
Meteorite crater tip-off to Saskatchewan oil trap. Oilweek, v. 23, n. 14, p. 10-11 (May22, 1972). 1972.
Sawatzky, H. B., Astroblemes in the Williston basin. Journal of the Canadian Society of Exploration Geophysicists, v. 10, pp. 23-38. 1975.
Sawatzky, H. B., Astroblemes in the Williston Basin (abstract). Fuels: A Geological Appraisal. A Saskatchewan Geological Society Symposium, Nov 7-8, 1974, Regina, Saskatchewan, p. 12. 1974.
Sawatzky, H. B., Viewfield - a producing crater? CSEG Journal, v. 8, n. 1, p. 22-40. 1972.
Westbroek, H., Stewart, R., The formation, morphology, and economic potential of meteorite impact craters, CREWES Research Report v. 8, p. 1-26. 1996.
Westbroek, H. H., Stewart, R.L and Lawton,D.C., Seismic description of subsurface meteorite impact craters, Conference and Technical Exhibition - European Association of Geoscientists and Engineers, vol.58, abstr. A016, 1996. 1996.
* pre-1977 K-Ar, Ar-Ar and Rb-Sr ages recalculated using the decay constants of Steiger and Jager (1977) Ages in millions of years (Ma) before present.

** Abbreviations: C - Crystalline Target; C-Ms - Metasedimentary Target; M - Mixed Target (i.e.sedimentary strata overlying crystalline basement); S - sedimentary target (i.e. no crystalline rocks affected by the impact event). From Osinski. G. R., Spray J. G., and Grieve R. A. F. 2007. Impact melting in sedimentary target rocks: A synthesis. In The Sedimentary Record of Meteorite Impacts, Geological Society of America Special Paper. Editors: Evans K. Horton W., King D., Morrow J., and Warme J. Geological Society of America: Boulder, in press.

***From Koeberl,C. Identification of meteoritic components in impactites. 1998, Koeberl, C. The Geochemistry and Cosmochemistry of Impacts. 2007 and PASSC Files. (IAB, IIIAB, IIIB, IIID - Iron Meteorite)