CODING SCHEME FOR ARC ATTRIBUTES: Several polygons and arcs were given the attribute unknown. These unknown lines and polygons ouccur along the Mississippi river. ITEM FEATURE P1 Shorthand attribute COLOR Line pattern from CARTO.LIN NAME Type of line Line Types and Attributes P1 Color Name -1 0 unknown 1 101 contacts 2 128 state borders 3 203 thrust faults 4 103 normal faults 5 107 dotted faults 6 402 Ki igneous rocks CODING SCHEME FOR POLYGON ATTRIBUTES: P1 COLOR MAPCODE FORMATION SYSTEM ERA -1 0 unknown 101 133 Qcm Alluvium Quaternary Cenozoic 102 71 Qso Alluvial deposits Quaternary Cenozoic 103 900 Qt Terrace deposits Quaternary Cenozoic 104 472 Qds Dune sand Quaternary Cenozoic 105 416 Qss Silt and sand Quaternary Cenozoic 106 98 Ql Loess Quaternary Cenozoic 107 9 Qsg Sand and gravel Quaternary Cenozoic 108 133 Qal Alluvium Quaternary Cenozoic 109 470 Qat Alluvium and terrace deposits Quaternary Cenozoic 201 476 Tg Gravel Tertiary Cenozoic 202 474 Tj Jackson Group Tertiary Cenozoic 203 883 Tc Claiborne Group Tertiary Cenozoic 204 10 Tw Wilcox Group Tertiary Cenozoic 205 6 Tm Midway Group Tertiary Cenozoic 301 702 Ksc Sand and clay Cretaceous Mesozoic 302 701 Kr Cretaceous rocks Cretaceous Mesozoic 303 659 Kad Arkadelphia Marl Cretaceous Mesozoic 304 660 Kn Nacatoch sand Cretaceous Mesozoic 305 605 Ks Saratoga Chalk Cretaceous Mesozoic 306 356 Km Marlbrook Marl Cretaceous Mesozoic 307 606 Ka Annona Chalk Cretaceous Mesozoic 308 303 Ko Ozan Fm Cretaceous Mesozoic 309 630 Kb Brownstown Marl Cretaceous Mesozoic 310 77 Kto Tokio Fm Cretaceous Mesozoic 311 17 Kw Woodbine Fm Cretaceous Mesozoic 312 808 Kkg Kiamichi Fm and Goodland Ls Cretaceous Mesozoic 313 14 Kt Trinity Group Cretaceous Mesozoic 314 12 Kde De Queen Ls Cretaceous Mesozoic 315 13 Kdi Dierks Ls Cretaceous Mesozoic 316 52 Ki Igneous rocks Cretaceous Mesozoic 401 4 Pzi Olistoliths of Metagabbro +Soapstone-Serpentine Paleozoic 402 321 &a Atoka Fm, undivided Pennsylvanian Paleozoic 403 334 &bh Bloyd Sh and Prairie Grove Mbr of Hale Fm Pennsylvanian Paleozoic 404 120 &hc Cane Hill Mbr of Hale Fm Pennsylvanian Paleozoic 405 88 &by Boggy Fm Pennsylvanian Paleozoic 406 83 &sv Savanna Fm Pennsylvanian Paleozoic 407 84 &ma McAlester Fm Pennsylvanian Paleozoic 408 86 &hs Hartshorne Ss Pennsylvanian Paleozoic 409 493 &au Atoka Fm, upper part Pennsylvanian Paleozoic 410 532 &am Atoka Fm, middle part Pennsylvanian Paleozoic 411 492 &al Atoka Fm, lower part Pennsylvanian Paleozoic 412 66 &jv Johns Valley Sh Pennsylvanian Paleozoic 413 2 &j Jackfork Ss Pennsylvanian Paleozoic 501 865 Mpfb Pitkin Ls, Fayetteville Sh + Batesville Ss Mississippian Paleozoic 502 490 Mr Ruddell Sh Mississippian Paleozoic 503 523 Mm Moorefield Fm Mississippian Paleozoic 504 308 Mb Boone Fm Mississippian Paleozoic 505 302 Ms Stanley Sh Mississippian Paleozoic 506 554 MDa Arkansas Novaculite Miss +Devonian Paleozoic 507 665 MDcp Chattanooga Sh, Clifty Ls, + Penters Chert Miss +Devonian Paleozoic 601 27 Slsb Lafferty, St. Clair, and Brassfield Lms Silurian Paleozoic 602 29 Smb Missouri Mountain Sh + Blaylock Ss Silurian Paleozoic 701 122 Ocj Carson Sh, Fernvale Ls, Kimmswick Ls, + Joachim Dm Ordovician Paleozoic 702 131 Ose St. Peter Ss + Everton Fm Ordovician Paleozoic 703 279 Op Powell Dolomite Ordovician Paleozoic 704 91 Ocjc Cotter and Jefferson City Dm Ordovician Paleozoic 705 408 Opb Polk Creek Sh and Bigfoot Chert Ordovician Paleozoic 706 100 Ow Womble Sh Ordovician Paleozoic 707 95 Ob Blakely Ss Ordovician Paleozoic 708 320 Om Mazarn Sh Ordovician Paleozoic 709 732 Ocm Crystal Mountain Ss Ordovician Paleozoic 710 622 Oc Collier Sh Ordovician Paleozoic 999 151 H2O Water
Original source of contact, thrust, culture, legend, drainage and type layers is unknown. However I believe that these were created by Rothtek Co. under the direction of Jim Queen of the USGS, Reston. These are the scribe sheets (or copies) used to print the 1993 paper verion of the Geology of Arkansas. These digital scanned scribe were placed on the greenwood ftp server. Greg Green of the USGS Denver, attributed the sheets in Arc/Info. The normal faults and igneous rocks scribe sheets were not found and these were digitized by hand by Green from a liibrary copy. (expect some errors)
This dataset was developed to provide a geologic map GIS database of the State Map of Arkansas for use in spatial analysis by a variety of users.
Are there legal restrictions on access or use of the data?
Use_Constraints:This database is not meant to be used or displayed at any scale other than 1:500,000.
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) editorial standard nor with the North American stratigraphic codes. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:100,000.
|Data format:||Geologic Map of Arkansas in format ArcInfo interchange (version 7.1.2) Size: 10|