Online Links:
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?Access_Constraints: none
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.