IGC field trip T147: Precambrian and Paleozoic geology and ore deposits in the midcontinent region / James W Baxter, James C Bradbury, Eva B Kisvarsanyi, Paul E Gerdemann, Jay M Gregg, Richard D Hagni -- Precambrian and Paleozoic geology and ore deposits of the midcontinent area / James W Baxter, James C Bradbury -- Precambrian rocks and ore deposits in the St. Francois Mountains, southeast Missouri -- a middle Proterozoic terrane of granite ring complexes and associated rhyolites / Eva B Kisvarsanyi -- The southeast Missouri lead district / Richard D Hagni -- Field trip guide to the Upper Cambrian Lamotte, Bonneterre, and Davis Formations, St. Francois Mts. Area, Missouri / Paul E Gerdemann, Jay M Gregg. |