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Newark Supergroup; Conglomerate, mixed clasts

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Rounded to subangular pebbles, cobbles, and boulders of mixed lithologies including quartz, phyllite, quartzite, gneiss, schist, greenstone, and marble in a matrix of medium- to very-coarse-grained, reddish-brown to gray, locally arkosic, sandstone.
State Virginia
Name Newark Supergroup; Conglomerate, mixed clasts
Geologic age Upper Triassic
Lithologic constituents
Major
Sedimentary > Clastic > ConglomerateConglomerate, mixed clasts
Comments Mesozoic Basins; paper map and digital map have differernt labels: paper map does not have TR prefix, but the digital source has TR as part of the label.
References

Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000.

Virginia Division of Mineral Resources, 2003, Digital Representation of the 1993 Geologic Map of Virginia, Publication 174, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, scale 1:500,000.
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Counties Albemarle - Amelia - Appomattox - Campbell - Caroline - Charlotte - Chesterfield - Dinwiddie - Fairfax - Fauquier - Halifax - Hanover - Henry - Loudoun - Madison - Orange - Pittsylvania - Prince William - Danville - Manassas