The Michigan Geological Repository for Research and Education at Â鶹´«Ã½ archives more than 530,000 linear feet of Michigan well cores. Additional Michigan cores are housed by these government agencies:
: This spreadsheet lists over 140 wells, most drilled by Shell or Sun Oil Companies. Cores from some of these wells are also housed at MGRRE.
, Office of the Michigan Geological Survey: The includes the counties of Alger, Baraga, Bay, Chippewa, Delta, Dickinson, Gogebic, Houghton, Ingham, Iron, Jackson, Keweenaw, Luce, Mackinac, Marquette, Menominee, Ontonagon, Saginaw, Schoolcraft and Tuscola. Also available from the state are for all of Michigan.
U.S. Geological Survey, Michigan: This of cores is from six Michigan wells. It also contains information about cuttings from 12 wells housed at the .
Unocal Michigan Cores: This collection represents 14 cored wells housed at the in Schulenberg, TX.