Clastic rocks associated with the Midcontinent Rift System in Iowa /
Anderson, Raymond R.
Clastic rocks associated with the Midcontinent Rift System in Iowa / by Raymond R. Anderson and Robert M. McKay. - Washington : Denver, CO : U.S. G.P.O. ; For sale by U.S. Geological Survey, Information Services, 1997. - 145 p. : ill., maps ; 28 cm. - U.S. Geological Survey bulletin ; 1989 Strategic and critical minerals in the midcontinent region, United States ; ch. I .
Includes bibliographical references (p. 138-140).
Geology, Stratigraphic--Proterozoic.
Geology--Iowa.
Keweenawan Rift.
QE75 QE653.5 / .B9 no. 1989-I
Clastic rocks associated with the Midcontinent Rift System in Iowa / by Raymond R. Anderson and Robert M. McKay. - Washington : Denver, CO : U.S. G.P.O. ; For sale by U.S. Geological Survey, Information Services, 1997. - 145 p. : ill., maps ; 28 cm. - U.S. Geological Survey bulletin ; 1989 Strategic and critical minerals in the midcontinent region, United States ; ch. I .
Includes bibliographical references (p. 138-140).
Geology, Stratigraphic--Proterozoic.
Geology--Iowa.
Keweenawan Rift.
QE75 QE653.5 / .B9 no. 1989-I