Guidebook 21. Field Trip Guidebook for Selected Geology in Minnesota and Wisconsin

Abstract

CONTENTS Field Trip 1. THE GEOLOGY OF THE MISSISSIPPI RIVER VALLEY-TWIN CITIES REGION: USING AN URBAN RIVER FOR INQUIRY-BASED EARTH SCIENCE EDUCATION Karen Campbell and Kent Kirkby Field Trip 2. CLASSIC PRECAMBRIAN GEOLOGY OF NORTHEAST MINNESOTA Mark Jirsa and James Miller Field Trip 3. DEPOSITS AND LANDFORMS IN THE REGION GLACIATED BY THE ST. LOUIS SUBLOBE Alan Knaeble, Gary Meyer, Lisa Marlow, Phil Larson, and Howard Mooers Field Trip 4. GRANITES OF THE EAST-CENTRAL MINNESOTA BATHOLITH Terry Boerboom, Daniel Holm, and Randy Van Schmus Field Trip 5. SINKHOLE ANATOMY 101 Calvin Alexander, Howard Hobbs, and Robert Tipping Field Trip 6. LATE ORDOVICIAN STRATIGRAPHY AND PALEONTOLOGY OF THE TWIN CITIES BASIN Robert Sloan, Michael Middleton, and Gerald Webers Field Trip 7. LATE ORDOVICIAN LITHOSTRATIGRAPHY AND BIOSTRATIGRAPHY OF THE SOUTHERN MARGIN OF THE TWIN CITIES BASINRobert Sloan, Michael Middleton, and Gerald Webers Field Trip S. GEOLOGY OF THE PRE-CRETACEOUS WEATHERING PROFILE AND CRETACEOUS STRATA OF THE MINNESOTA AND COTTONWOOD RIVER VALLEYS Larry Zanko, John Heine, and Dale Setterholm Field Trip 9. ARCHITECTURE OF AN ARCHEAN GREENSTONE BELT: STRATIGRAPHY, STRUCTURE, AND MINERALIZATION Dean Peterson, Mark Jirsa, and George Hudak Field Trip 10. THE WESTERN MARGIN OF THE KEWEENAWAN MIDCONTINENT RIFT SYSTEM: GEOLOGIC HIGHLIGHTS OF ARCHEAN, PALEOPROTEROZOIC, MESO PROTEROZOIC, AND PALEOZOIC BEDROCK IN EASTERN MINNESOTA AND NORTHWESTERN WISCONSIN Terry Boerboom, Daniel Holm, Laurel Woodruff, and Karl Wirth Field Trip 11. GEOLOGY AND SEDIMENTOLOGY OF THE PALEOPROTEROZOIC ANIMIKIE GROUP: POKEGAMA FORMATION, BIWABIK IRON FORMATION, AND VIRGINIA FORMATION OF THE EASTERN MESABI IRON RANGE, AND THE THOMSON FORMATION NEAR DULUTH, NORTHEASTERN MINNESOTA Richard Ojakangas, Mark Severson, Peter Jongewaard, John Arola, Joel Evers, Doug Halvorson, G.B. Morey, and T.B. Holst Field Trip 12. PRE-WISCONSINAN AND WISCONSINAN GLACIAL. STRATICRAPHY, HISTORY, AND LANDSCAPE EVOLUTION, WESTERN WISCONSIN Kent Syverson, Robert Baker, Steven Kostka, and Mark Johnson