The Origin of Diamonds in Drift of the North Central United States

  title={The Origin of Diamonds in Drift of the North Central United States},
  author={Henry P. Schwarcz},
  journal={The Journal of Geology},
  pages={657 - 663}
  • H. Schwarcz
  • Published 1 July 1965
  • Geology
  • The Journal of Geology
Diamonds found in Wisconsin drift in Ohio, Indiana, Michigan, and Wisconsin are proposed to have been carried south from an ancient meteorite crater at present outlined by the Nastapoka island arc in southeastern Hudson Bay. Following meteorite impact, brecciation extended to a depth of about 150 km., and fragments of this mantle-rock breccia, enclosing diamonds, are inferred to have been brought to the surface in a central uplift similar to those found in lunar craters. Following the crater's… 
The Origin of Diamonds in Drift of the North Central United States: A Discussion
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