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Map showing publication footprint
  • Usage in publication:
    • Maiden Creek Member
  • Modifications:
    • First used
  • AAPG geologic province:
    • Appalachian basin
Publication:

Wood, C.R., and MacLachlan, D.B., 1978, Geology and groundwater resources of northern Berks County, Pennsylvania: Pennsylvania Geological Survey Water Resource Report, 4th series, no. 44, 91 p., (incl. geologic map, scale 1:62,500)


Summary:

First used the Maiden Creek Member of the Allentown Formation. Unit is uppermost member of formation. Consists of gray dolomite to silty dolomite with abundant thin-bedded to nodular, dark chert; usually thick bedded with subordinate interbedded limestone; algal laminate structures; some oolite, and sharpstone conglomerate. Overlies Muhlenberg Member of Allentown and underlies the Stonehenge Formation.

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


Map showing publication footprint
  • Usage in publication:
    • Maiden Creek Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Dolomite
    • Limestone
  • AAPG geologic province:
    • Appalachian basin
Publication:

MacLachlan, D.B., 1979, Geology and mineral resources of the Temple and Fleetwood quadrangles, Berks County, Pennsylvania: Pennsylvania Geological Survey Topographic and Geologic Atlas, 4th series, 187ab, 71 p., scale 1:24,000 and 1:48,000


Summary:

Maiden Creek named as upper member of three of the Allentown Formation. Consists of dark- to medium-gray, magnesian limestone, dolomite, and chert. Unit is 375 meters thick, conformably overlies Muhlenberg Member of the Allentown Formation and conformably underlies Stonehenge Formation of the Beekmantown Group. Age is Late Cambrian.

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


Map showing publication footprint
  • Usage in publication:
    • Maiden Creek Member*
  • Modifications:
    • Overview
    • Age modified
  • AAPG geologic province:
    • Appalachian basin
Publication:

Drake, A.A., Jr., 1987, Geologic map of the Topton quadrangle, Lehigh and Berks Counties, Pennsylvania: U.S. Geological Survey Geologic Quadrangle Map, GQ-1609, 1 sheet, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_1134.htm]


Summary:

Maiden Creek Member of the Allentown Dolomite adopted for use by USGS in southeast Lehigh and Berks Cos., PA. "Medium- to dark-gray, thick-bedded dolomite and lesser light-medium gray magnesium limestone. Unit contains dark-gray chert stringers and nodules and chert is common in its float." Cambrian-Ordovician boundary believed to be within member. Assigned to the Late Cambrian and earliest Early Ordovician.

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


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For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

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