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Geologic units containing novaculite

Earth material > Sedimentary rock > Chemical sedimentary rock
Novaculite
A dense, hard, even-textured, light-colored, cryptocrystalline siliceous sedimentary rock, similar to chert but characterized by dominance of microcrystalline quartz over chalcedony.
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Arkansas - Oklahoma - Texas
Arkansas
Arkansas Novaculite (Phanerozoic | Paleozoic | Devonian-Late Carboniferous Mississippian-Early)
Arkansas Novaculite - Includes upper division (Mississippian), middle division (Mississippian and Devonian), and lower division (Devonian)
Tokio Formation (Phanerozoic | Mesozoic | Cretaceous-Late)
Tokio Formation
Trinity Group (Phanerozoic | Mesozoic | Cretaceous-Early)
Trinity Group
Oklahoma
Arkansas Novaculite (Phanerozoic | Paleozoic | Devonian-Late)
ARDMORE-SHERMAN- Shale, black, cherty, with much novaculite; thickness, 230 to375 feet. Occurs in the OUACHITA MNTS
Arkansas Novaculite (Phanerozoic | Paleozoic | Silurian Devonian(?) Carboniferous Mississippian-Early )
McALESTER TEXARKANA- Chert, fine- to very fine-grained, gray, green, tan, black, white, and pink, with interbedded black to gray shale in 1-to 18-inch beds; some interbedded conglomerates and in places a basal conglomerate; upper part has been determined to be Mississippian in age and lower part to be Early Silurian, on basis of examination of palynomorphs from Potato Hills; thickness, 600 feet or more. Occurs in the OUACHITA MTNS SOUTH OF TI VALLEY FAULT.
Texas
Caballos Novaculite and Maravillas Chert, undivided (Phanerozoic | Paleozoic | Ordovician-Late Devonian Carboniferous Mississippian)
Caballos Novaculite and Maravillas Chert, undivided
Mississippi, Devonian, and Ordovician rocks, undivided (Phanerozoic | Paleozoic | Ordovician Devonian Carboniferous Mississippian)
Mississippi, Devonian, and Ordovician rocks, undivided

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