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1. Bedrock geologic map of northwestern Minnesota, M-80

1994. Jirsa, Mark A., Runkel, Anthony C., and Chandler, Val W. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northwestern Minnesota, scale 1:250,...

2. Bedrock geologic map of northwestern Minnesota, M-92

1999. Jirsa, Mark A., Chandler, Val W., and Runkel, Anthony C. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of northwestern Minnesota, scale 1:200,...

3. Bedrock geology of the Cook-Side Lake area, St Louis and Itasca Counties, Minnesota, M-75

1991. Jirsa, Mark A., Boerboom, Terrence J., Chandler, Val W., and McSwiggen, Peter L. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments), Cook-Side Lake area, scale 1:48,000.

4. Bedrock geology of the Mesabi Iron Range, Minnesota, M-163

2005. Jirsa, Mark A., Chandler, Val W., and Lively, R.S. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Mesabi Iron Range, scale 1:100,000.

5. Maps of bedrock geology and superimposed magnetic on gravity (SMOG) anomaly for east-central Minnesota, M-132

2003. Jirsa, Mark A., Chandler, Val W., Lively, R.S., and Boerboom, Terrence J. Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments); gravity (interpretation of gravity dat...

6. Simple Bouguer gravity map of Minnesota, Hibbing sheet, M-56

1985. Chandler, Val W., Jirsa, Mark A., and Ikola, Rodney J. Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between ...