Upper Carboniferous System, Pennsylvanian Subsystem, Subdivision Classification and Nomenclature
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Front Cover: Photograph of reference section for upper Chanute Shale and Paola Limestone Member, Muncie Creek Shale Member, Raytown Limestone Member of the Iola Limestone. Author John Pope holding staff that is 6.5 feet (2.0 m) long, with the top near the base of Paola Limestone. The outcrop is at an exposure in a south-facing cutbank of North River in the SE SW NE NW section 11, T. 76 N., R. 29 W., Madison County, Iowa, about 300 feet (91 m) east of the Elmwood Avenue bridge. Photo by Diana Pope, May 2008. Description of Pennsylvanian Units, Revision of Stratigraphic Nomenclature, and Reclassification of the Morrowan, Atokan, Desmoinesian, Missourian, and Virgilian stages in Iowa Special Report Series No. 5 John Paul Pope Department of Natural Sciences, Geology Northwest Missouri State University Maryville, Missouri, 64468 Iowa Geological and Water Survey December 2012 Iowa Department of Natural Resources Charles Gipp, Director Special Report Series No.5 ii Iowa Geological and Water Survey Table of Contents ABSTRACT.............................................................................................................................................xiii INTRODUCTION...................................................................................................................................... 1 Early Studies of Pennsylvanian (Carboniferous) in Iowa ....................................................... 2 Iowa Structural Basins ................................................................................................................. 2 Midcontinent Rift System............................................................................................................ 3 Cyclothems.................................................................................................................................... 5 PART 1: MIDCONTINENT (FOREST CITY) BASIN STRATIGRAPHY........................................ 6 Carboniferous System.................................................................................................................. 6 Pennsylvanian Subsystem........................................................................................................... 7 UPPER PENNSYLVANIAN SERIES ........................................................................................... 7 Pennsylvanian-Permian Boundary............................................................................................ 8 VIRGILIAN STAGE............................................................................................................ 9 COUNCIL GROVE GROUP* (* not recognized in Iowa)............................. 11 Red Eagle Limestone*.......................................................................... 11 Howe Limestone Member (Permian)*................................................ 11 Bennett Shale Member (Permian)*..................................................... 11 Glenrock Limestone Member (Pennsylvanian)*................................. 11 Johnson Shale* ..................................................................................... 11 Foraker Limestone* ............................................................................. 11 Long Creek Limestone Member* ....................................................... 11 Hughes Creek Shale Member*............................................................ 11 Americus Limestone Member*........................................................... 11 ADMIRE GROUP*........................................................................................... 11 Janesville Shale*................................................................................... 11 Hamlin Shale Member* ...................................................................... 11 Five Point Limestone Member*.......................................................... 11 West Branch Shale Member*.............................................................. 11 Falls City Limestone*........................................................................... 11 Onaga Shale* ........................................................................................ 11 Hawxby Shale Member*..................................................................... 11 Aspinwall Limestone Member*.......................................................... 11 Towle Shale Member*........................................................................ 11 WABAUNSEE GROUP.................................................................................... 11 Wood Siding Formation*..................................................................... 12 Brownville Limestone Member* ........................................................ 12 Pony Creek Shale Member*................................................................ 12 Grayhorse Limestone Member*.......................................................... 12 Plumb Shale Member*........................................................................ 12 Nebraska City Limestone Member* ................................................... 12 Root Shale ............................................................................................. 12 French Creek Shale Member*............................................................. 12 Lorton Coal bed (NE, KS)* ....................................................... 12 Jim Creek Limestone Member*.......................................................... 12 Friedrich Shale Member......................................................................12 Stotler Formation ................................................................................ 12 Grandhaven Limestone Member........................................................ 13 iii Special Report Series No.5 Dry Shale Member ............................................................................. 13 Dover Limestone Member ................................................................. 13 Pillsbury Shale...................................................................................... 13 Nyman Coal bed........................................................................ 14 Zeandale Limestone............................................................................. 14 Maple Hill Limestone Member .......................................................... 14 Wamego Shale Member ..................................................................... 14 Tarkio Limestone Member ................................................................. 15 Willard Shale........................................................................................ 15 Emporia Limestone.............................................................................. 16 Elmont Limestone Member ................................................................ 16 Harveyville Shale Member................................................................. 16 Reading Limestone Member............................................................... 16 Aubern Shale........................................................................................ 16 Bern Formation.................................................................................... 17 Wakarusa Limestone Member............................................................ 17 Soldier Creek Shale Member.............................................................. 17 Burlingame Limestone Member......................................................... 17 Scranton Formation............................................................................. 18 Silver Lake Shale Member ................................................................. 18 Rulo Limestone Member .................................................................... 18 Cedar Vale Shale Member.................................................................. 18 Elmo Coal bed .......................................................................... 19 Happy Hollow Limestone Member .................................................... 19 White Cloud Shale Member ............................................................... 19 Howard Limestone............................................................................... 19 Utopia Limestone Member................................................................. 20 Winzeler Shale Member ..................................................................... 21 Church Limestone Member ................................................................ 21 Shanghai Creek Shale Member .......................................................... 21 Wauneta Limestone Member.............................................................. 22 Severy Shale.......................................................................................... 22 Nodaway Coal bed.................................................................... 22 SHAWNEE GROUP......................................................................................... 22 Topeka Limestone................................................................................ 24 Coal Creek Limestone Member.......................................................... 24 Holt Shale Member............................................................................. 24 DuBois Limestone Member................................................................ 24 Turner Creek Shale Member .............................................................. 25 Sheldon Limestone Member............................................................... 25 Jones Point