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Geologic Unit: Laurel
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Map showing publication footprint
  • Usage in publication:
    • Laurel bed
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Foerste, A.F., 1896, An account of the Middle Silurian rocks of Ohio and Indiana: Cincinnati Society of Natural History Journal, v. 18, p. 161-200.


Summary:

Named Laurel bed. Typically is well bedded white or bluish-white limestone. Contains sparse to abundant chert beds intercalated between limestone layers. North of Osgood, Ripley Co., IN, basal portion is richly fossiliferous and is referred to as the Osgood phase. Underlain by Clinton rock or Montgomery rock. Overlain by Waldron shales.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel limestone
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Foerste, A.F., 1897, Geology of the Middle and Upper Silurian rocks of Clark, Jefferson, Ripley, Jennings, and southern Decatur Counties, Indiana: Indiana Department of Geology and Natural Resources Annual Report, no. 21, p. 213-288.


Summary:

Lower part of original Laurel limestone as defined by Foerste (1896), which contains much clayey shale and referred to as the Osgood phase, here separated as a distinct unit and called the Osgood beds. Laurel limestone name retained for remaining upper part.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel dolomite
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Butts, Charles, 1915, Geology and mineral resources of Jefferson County, Kentucky: Kentucky Geological Survey [Report], 4th series, v. 3, pt. 2, 270 p.


Summary:

Designated Laurel dolomite. Composed of dolomite. Very poor in fossils. 35 to 40 ft thick. Conformably overlies Osgood formation; overlain by Waldron shale.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Stout, Wilber, 1941, Dolomites and limestones of western Ohio: Ohio Division of Geological Survey Bulletin, 4th series, no. 42, 468 p.


Summary:

Designated Laurel member of Alger Formation. Composed of finely crystalline, dense and hard dolomite. Dominant color is gray or bluish gray. Rather evenly bedded in thin to medium layers. Locally contains considerable chert and some or much pyrite. Fossils common. Ranges from 5 to 9 ft thick in OH. Underlain by Osgood member; overlain by Massie member.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel member
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Cincinnati arch

Map showing publication footprint
  • Usage in publication:
    • Laurel dolomite*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Norris, S.E., Cross, W.P., and Goldthwait, R.P., 1948, The water resources of Montgomery County, Ohio: Ohio Division of Water Bulletin, no. 12, 100 p.


Summary:

Designated Laurel dolomite. Average thickness 5 ft. Overlies Osgood formation; underlies Euphemia dolomite. Niagaran age.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel limestone
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Wilson, C.W., Jr., 1949, Pre-Chattanooga stratigraphy of central Tennessee: Tennessee Division of Geology Bulletin, no. 56, 407 p., 2nd ed. (1990) incl. editorial revisions


Summary:

Pg. 248-249. Laurel limestone of Wayne group. Included in Wayne group. In central Tennessee, uniformly bedded limestone with beds that range from a few inches to a foot or more in thickness. Fine-grained and light-gray with varying amounts of red and pink grains; locally entirely dolomitic; in some areas, contains silt, also may be oolitic at top. Average thickness 30 feet. Conformably overlies Osgood formation; conformably underlies Waldron shale or unconformably underlies Chattanooga shale. [Age is Middle Silurian.]

Source: US geologic names lexicon (USGS Bull. 1200, p. 2117-2118).


Map showing publication footprint
  • Usage in publication:
    • Laurel Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Cincinnati arch
Publication:

French, R.R., 1967, Crushed stone resources of the Devonian and Silurian carbonate rocks of Indiana: Indiana Geological Survey Bulletin, no. 27, 127 p.


Summary:

Salamonie Dolomite (defined by Pinsak and Shaver, 1964), which includes all strata between the Brassfield Limestone and the Waldron Shale and which is the span of the Osgood Formation and Laurel Limestone, is extended from northern IN into southern IN. The Osgood and Laurel are reduced in rank to members of the Salamonie.

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


Map showing publication footprint
  • Usage in publication:
    • Laurel Dolomite*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Cincinnati arch

Map showing publication footprint
  • Usage in publication:
    • Laurel Formation*
  • Modifications:
    • Revised
    • Biostratigraphic dating
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Harris, A.G., Weary, D.J., and Repetski, J.E., 1995, Conodont distribution in uppermost Ordovician through Lower Devonian rocks, du Pont Geohydrological Survey well, near Waverly, Humphreys County, Tennessee, IN Broadhead, T.W., and Gibson, M.A., eds., Upper Silurian-Lower Devonian biotas and paleoenvironments of the western Tennessee shelf: University of Tennessee, Department of Geological Sciences Studies in Geology, no. 25, p. 23-27., Also issued in GSA, Southeast Section, 44th Ann. Mtg., Gdbk. for Field Trips, no. 4, 1995


Summary:

Used as Laurel Formation of Wayne Group in du Pont Geohydrological Survey well near Waverly, Humphreys Co., central TN. Highest conodont collection in Llandoverian to early Wenlockian interval (732.1 to 733.5 ft, Laurel Formation) has one specimen of an early form of OZARKODINA EXCAVATA resembling OZ. E. EOSILURICA Bischoff which, in Australia, ranges from early Llandoverian to earliest(?) Wenlockian (Bischoff, 1986).

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


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