Admiral Formation (TXPad;0)

State	Texas
Name	Admiral Formation
Geologic age	Phanerozoic \| Paleozoic \| Permian [Wolfcamp]
Original map label	Pad
Comments	Mudstone, shale, sandstone, and limestone. Mostly mudstone and shale tan, gray, greenish-brown, reddish-brown, reddish mudstone more abdt northward. rare lentils of sandy and clayey limestone in southern part. Overall Limestone gray, fine to coarse grained, bioclastic, thin beds, wavy-nodular; fossils mostly crinoid frags, phylloid algae, and fusulinids; ls. 5-15 ft thick in e lenticular beds(so. Throckmorton Co.). Thickness of formation 200-240 ft.
Primary rock type	mudstone
Secondary rock type	limestone
Other rock types	sandstone
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed) Sedimentary > Clastic > Mudstone > Claystone (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, 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
Geographic coverage	Callahan - Coleman - Concho - McCulloch - Shackelford - Throckmorton