Geologic Map of the Fittstown 7.5' Quadrangle, Pontotoc and Johnston Counties, Oklahoma by David J. Lidke and Charles D. Blome 2017 U.S. Geological Survey Scientific Investigations Map 3371 ABSTRACT: This 1:24,000-scale geologic map includes new geologic mapping as well as compilation and revision of previous geologic maps in the area. Field investigations were carried out during 2009–2011 that included mapping and investigations of the geology and hydrology of the Chickasaw National Recreation Area, Oklahoma, west of the map area. The Fittstown quadrangle is in Pontotoc and Johnston Counties in south-central Oklahoma, which is in the northeastern part of the Arbuckle Mountains. The Arbuckle Mountains are composed of a thick sequence of Paleozoic sedimentary rocks that overlie Lower Cambrian and Precambrian igneous rocks; these latter rocks are not exposed in the quadrangle. From Middle to Late Pennsylvanian time, the Arbuckle Mountains region was folded, faulted, and uplifted. Periods of erosion followed these Pennsylvanian mountain- building events, beveling this region and ultimately developing the current subtle topography that includes hills and incised uplands. The southern and northwestern parts of the Fittstown quadrangle are directly underlain by Lower Ordovician dolomite of the Arbuckle Group that has eroded to form an extensive, stream-incised upland containing the broad, gently southeast-plunging, Pennsylvanian-age Hunton anticline. The northeastern part of the map area is underlain by Middle Ordovician to Pennsylvanian limestone, shale, and sandstone units that predominantly dip northeast and form the northeastern limb of the Hunton anticline; this limb is cut by steeply dipping, northwest-southeast striking faults of the Franks fault zone. This limb and the Franks fault zone define the south- western margin of the Franks graben, which is underlain by Pennsylvanian rocks in the northeast part of the map area. DISCLAIMERS: This database, identified as SIM3371, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. DATA FILES: The pamphlet and map for this report are located at and can be downloaded via the Web from at the U.S. Geological Survey publications website at https://doi.org/10.3133/sim3371 List of files: 00ReadMe.txt sim3371_pamphlet.pdf sim3371_map.pdf SIM3371_map_geo.pdf (georeferenced pdf for users' convenience) Original geologic compilation by William E. Ham, Myron E. McKinley, and others, 1954, Oklahoma Geological Survey. Revised by Johnson, 1990, Oklahoma Geological Survey. Field work done in 2009 and 2011 by David J. Lidke and Charles D. Blome. The GIS database for this report is located at and can be downloaded via the Web from ScienceBase at https://doi.org/10.5066/F77P8WJN The database contact is: Paco VanSistine 303-236-5452 dvansistine@usgs.gov U.S. Geological Survey Mail Stop 980 Denver, CO 80225 This geospatial database consists of shapefiles and ArcGIS geodatabase files contained in zip archives. See the list below. Please refer to the file SIM3363.met for detailed metadata documentation for this geospatial database. List of files: sim3371.met (.xml) sim3371_Topo.zip fittbasr.tif fittbasr.tfw fittbasr.prj sim3371_Hillshade.zip Fittstown_hillshade.tif Fittstown_hillshade.tfw Fittstown_hillshade.prj sim3371_shapefiles.zip: shapefiles directory: Fittstown_bedding.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) point Fittstown_boundary.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) polygon Fittstown_contact.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) line Fittstown_fault.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) line Fittstown_fold.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) line Fittstown_geology.shp (.dbf/.prj/.sbn/.sbx/.shx.xml/.shx) polygon sim3371_GIS.gdb.zip directory (contains GIS data as geodatabase feature classes) HOW TO OBTAIN THE DIGITAL FILES: The map sheet and accompanying pamphlet can be obtained via the Internet from the U.S. Geological Survey publications website. Go to the web page at https://doi.org/10.3133/sim3371/ and follow the directions to download the files. The main product is a Portable Document Format (.pdf) map, which requires Adobe Acrobat for viewing. This Portable Document Format (PDF) file (sim3371_map.pdf) can be downloaded, from which paper copies may be printed. Acrobat software runs on a variety of systems, and is available for download free of charge from Adobe at http://www.adobe.com. Publication Reference: Lidke, D.J., and Blome, C.D., 2017, Geologic map of the Fittstown 7.5' quadrangle, Pontotoc and Johnston Counties, Oklahoma: U.S. Geological Survey Scientific Investigations Map 3371, 14 p., 1 sheet, scale 1:24,000, https://doi.org/10.3133/sim3371. The digital files constituting the geologic map database of this report can be obtained via the Internet from ScienceBase: ScienceBase link: https://doi.org/10.5066/F77P8WJN ScienceBase Reference: Lidke, D.J., and Blome, C.D., 2016, Data release for Geologic Map of the Fittstown 7.5' quadrangle, Pontotoc and Johnston Counties, Oklahoma: U.S. Geological Survey data release, https://doi.org/10.5066/F77P8WJN. This map is offered as an online-only, digital publication. Users should be aware that, because of differences in rendering processes and pixel resolution, some slight distortion of scale may occur when viewing it on a computer screen or when printing it on an electronic plotter, even when it is viewed or printed at its intended publication scale.