Southwick, D. L.  1936- <br/><br/>
Tectonic imbrication and foredeep development in the Penokean orogen, east-central Minnesota--an interpretation based on regional geophysics and the results of test-drilling / 
by D.L. Southwick and G.B. Morey. The Penokean orogeny in Minnesota and upper Michigan--a comparison of structural geology / by Timothy B. Holst 
 - Washington :  U.S. Dept. of the Interior, U.S. Geological Survey,  1991 
 - iv, C17, D10 p. :  ill. ;  28 cm. 
 - U.S. Geological Survey bulletin ;  1904-C, D .
<br/><br/> Chapters C and D are issued as a single volume and are not available separately 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Proterozoic<br/>Geology--Minnesota<br/>Geology, Structural--Minnesota<br/>Plate tectonics<br/>Geology--Michigan<br/>Geology, Structural--Michigan
<br/><br/><label>Dewey Class. No.: </label>551.71509776