New evidence of early Ordovician tectonism in the Upper Mississippi Valley
By: Greg A. Ludvigson, M. Patrick McAdams.
Contributors: McAdams, M. Patrick.
Series: Technical information series (Iowa Geological Survey) -- no. 9
Publisher: Iowa Geological Survey
Published: 1980
Place of publication: Iowa City, Iowa
Language: eng
Number of pages: 29
Subjects: Geology, Stratigraphic -- Ordovician.; Geology -- Iowa.; Geology -- Wisconsin.; Geology -- Mississippi River Valley.
Notes: Includes abstract.

Bibliography: p. 27-29.