USGS - science for a changing world

Mineral Resources On-Line Spatial Data

Ventioner Formation

Ventioner Formation
StateTexas
NameVentioner Formation
Geologic agePhanerozoic | Paleozoic | Carboniferous Pennsylvanian [Missouri]
Original map labelIPv
Commentsinterbedded shale, sandstone, siltstone, and limestone. Shale- gray, black, maroon weathers tan and reddish brown, silty, sandy, locally laminated, thick beds, ferruginous nodules locally common; many sandy and silty lenses and flaggy, thin beds w/ horiz. lamination, ripple cross-lamination, local load and flute casts; some small, sandy channel-fill bodies to 6 ft thick w/ woody debris; fossil beds w/ marine invertebrates uncommon, fine-grained plant debris abdt. Sandstone and shale--ss units closely spaced, sheetlike and massive beds, trough cross stratified channel-fill bodies with shale clasts and plant debris, fine to med-grained, interbedded with shale and laminated siltst., thickness 15 to 40 ft. Limestonr-- tan to yellow, fine- to med-grained, thin beds and nodular, bioclastic mostly with algae, crinoids, fusulinids, and brachipods; merges with Ranger Limestone in subsurface; thickness 10-15 ft. Thickness of Ventioner Formation (revised) 200 to 270 ft
Primary rock typefine-grained mixed clastic
Secondary rock typemedium-grained mixed clastic
Other rock typeslimestone
Lithologic constituents
Major
Sedimentary > Clastic > Mixed-clastic > Sandstone-Mudstone (Bed)
Minor
Sedimentary > Clastic > Mixed-clastic > Siltstone-Mudstone (Bed)
Incidental
Sedimentary > Carbonate > Limestone (Bed)
Map references
Bureau of Economic Geology, 1992, Geologic Map of Texas: University of Texas at Austin, Virgil E. Barnes, project supervisor, Hartmann, B.M. and Scranton, D.F., cartography, scale 1:500,000
Unit references
Bureau of Economic Geology, 1987, Wichita Falls-Lawton Sheet, Geologic Atlas of Texas: University of Texas at Austin, Bureau of Economic Geology, scale 1:250,000.
Geographic coverageJack - Wise

Show this information as [XML] - [JSON]

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=TXPAv;0
Page Contact Information: Peter Schweitzer