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Map showing publication footprint
  • Usage in publication:
    • Lillydale shale
  • Modifications:
    • Named
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Appalachian basin
Publication:

Reger, D.B., and Price, P.H., 1926, Mercer, Monroe, and Summers Counties [West Virginia, with sections on paleobotany and paleontology by D.B. Reger, David White, G.H. Girty, and W.P. Prouty]: West Virginia Geological Survey [County Reports and Maps], [CGR-15], 963 p., (incl. geologic map, scale 1:62,500)


Summary:

Lillydale shale, named in this report, is dark green or greenish gray at top; black and carbonaceous at base. Shale is fissile and includes lenses of iron carbonate and limestone. Contains marine fossils. Thickness ranges from 80 to 125 ft. Underlies Glenray limestone and overlies Greenbrier series. Basal member of Bluefield group. Includes Edray sandstone, 0 to 50 ft above base. Type locality is in Monroe Co. and unit is also observed in Mercer and Summers Cos., WV, and in Tazewell Co., VA. Can be traced to head of Greenbrier Valley. Age is Mississippian.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Lillydale Shale
  • Modifications:
    • Overview
    • Revised
  • AAPG geologic province:
    • Appalachian basin
Publication:

Beuthin, J.D., 1989, Genetic identification and paleogeomorphic interpretation of the sub-Pennsylvanian unconformity in northwestern West Virginia: Appalachian Basin Industrial Associates, v. 15, p. 107-131.


Summary:

Informal division of Mauch Chunk Group into upper and lower parts is used in this report. Lower Mauch Chunk includes Lillydale Shale and laterally equivalent Webster Springs Sandstone, and overlying Reynolds Limestone. [Bluefield Formation is not used in this report.] Upper Mauch Chunk Group is undifferentiated.

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Lillydale Shale Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Appalachian basin
Publication:

Nolde, J.E., 1994, Devonian to Pennsylvanian stratigraphy and coal beds of the Appalachian plateaus province, IN Geology and mineral resources of the southwest Virginia coalfield: Virginia Division of Mineral Resources Publication, no. 131, p. 1-85.


Summary:

Bluefield Formation is divided into three formal members in VA --Lillydale Shale Member, Glenray Limestone Member, and Indian Mills Sandstone Member. The Lillydale is described in southwest VA as dark- to greenish-gray, micaceous shale, black and carbonaceous at the base. The shale contains many lenses of siderite and a few sandstone beds. Thickness varies between 80 and 130 ft. Known as the "Pencil Cave shale" by drillers. Age is Late Mississippian (Chesterian).

Source: GNU records (USGS DDS-6; Reston GNULEX).


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