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Mineral Resources > Online Spatial Data > Geology > by state > Virginia Geology

Geologic units in Pulaski county, Virginia

[Additional scientific data in this geographic area]

Ashe Formation -Mica schist or phyllite (Proterozoic Z) at surface, covers 0.2 % of this area

Ashe Formation - Mica schist or phyllite

Lithology: mica schist; phyllite

Juniata, Reedsville, Trenton, and Eggleston Formations (Ordovician) at surface, covers 1 % of this area

Juniata, Reedsville, Trenton, and Eggleston Formations - Dusky-red shale and mudstone and sandstone; shale and limestone. Note: one area in southeastern Bland County has landslides with intact stratigraphic units.

Lithology: shale; mudstone; sandstone; limestone

Ashe Formation - Biotite gneiss (Proterozoic Z) at surface, covers < 0.1 % of this area

Ashe Formation - Biotite gneiss.

Lithology: biotite gneiss

Lower Ordovician and Upper Cambrian Formations Undivided (Cambrian-Ordovician) at surface, covers 2 % of this area

Lower Ordovician and Upper Cambrian Formations Undivided - Includes Pinesburg Station Dolomite, Rockdale Run Formation, Beekmantown Formation, Stonehenge Limestone and Conococheague Formation.

Lithology: limestone; dolostone (dolomite); chert; sandstone

Millboro Shale, Huntersville Chert, and Rocky Gap Sandstone (Devonian) at surface, covers 2 % of this area

Millboro Shale, Huntersville Chert, and Rocky Gap Sandstone - Black, fissile shale; chert; and calcareous sandstone

Lithology: black shale; chert; sandstone

Shady Dolomite (Cambrian) at surface, covers 2 % of this area

Shady Dolomite - Dolomite.

Lithology: dolostone (dolomite); limestone; shale

Rome Formation (Cambrian) at surface, covers 17 % of this area

Rome Formation - Dusky-red and green shale and siltstone, dolomite, and limestone.

Lithology: shale; siltstone; sandstone; dolostone (dolomite); limestone

Silurian Formations Undivided (Silurian) at surface, covers 3 % of this area

Silurian Formations Undivided - Some landslides with intact stratigraphic units in Giles County area. Includes: Dsu, Skrt, Sm. (Shrc?)

Lithology: sandstone; shale; limestone; arenite; conglomerate

Conococheague Formation (Cambrian) at surface, covers 13 % of this area

Conococheague Formation - Limestone, dolomite, and calcareous sandstone.

Lithology: limestone; dolostone (dolomite); sandstone

Brallier Formation (Devonian) at surface, covers 7 % of this area

Brallier Formation - Micaceous shale, siltstone, and sandstone.

Lithology: shale; siltstone; sandstone

Moccasin or Bays Formation through Blackford Formation (Ordovician) at surface, covers 1 % of this area

Moccasin or Bays Formation through Blackford Formation - Dusky-red shale and mudstone; sandstone; limestone, in part cherty; and calcareous shale.

Lithology: shale; mudstone; sandstone; limestone; chert

Price Formation (Mississippian) at surface, covers 10 % of this area

Price Formation - Sandstone, conglomeratic sandstone, and shale with carbonaceous partings and impure coal beds.

Lithology: sandstone; shale; siltstone; limestone; conglomerate; coal

Erwin and Hampton Formations (Cambrian) at surface, covers 14 % of this area

Erwin and Hampton Formations - Sandstone, quartzite, and shale.

Lithology: sandstone; quartzite; shale

Maccrady Shale (Mississippian) at surface, covers 2 % of this area

Maccrady Shale - Dusky-red and green shale and mudstone; and evaporite deposits.

Lithology: shale; siltstone; evaporite; limestone; mudstone; sandstone

Elbrook Formation (Cambrian) at surface, covers 20 % of this area

Elbrook Formation - Dolomite, shale, and minor limestone.

Lithology: dolostone (dolomite); limestone; shale; siltstone

Chemung Formation (redefined as Foreknobs Formation) (Devonian) at surface, covers 3 % of this area

Chemung Formation - Shale and sandstone with a few thin, quartz-pebble conglomerates and red-beds.

Lithology: shale; sandstone; conglomerate

Elk Park Plutonic Group - Biotite augen gneiss (Proterozoic Y) at surface, covers 0.2 % of this area

Elk Park Plutonic Group - Biotite augen gneiss and porphyritic gneiss

Lithology: augen gneiss; quartz monzonite

Lower Devonian and Silurian Formations Undivided (Silurian-Devonian) at surface, covers 0.6 % of this area

Lower Devonian and Silurian Formations Undivided - Some landslides with intact stratigraphic units in Craig County area. Includes: Dsu, Skrt, Sm. (Shrc?)

Lithology: sandstone; limestone; shale

Millboro Shale and Needmore Formation (Devonian) at surface, covers 0.1 % of this area

Millboro Shale and Needmore Formation - Black, fissile shale; gray calcareous shale; Tioga metabentonite at top of Needmore.

Lithology: black shale; shale; bentonite; limestone