U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Leitchfield
Map showing publication footprint
  • Usage in publication:
    • Leitchfield marls
  • Modifications:
    • First used
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Illinois basin
Publication:

Norwood, C.J., 1876, Report on the geology of the region adjacent to the Louisville, Paducah, and Southwestern Railroad to the Ohio River: Kentucky Geological Survey Report of Progress, new series, v. 4, pt. 11, p. 357-448.


Summary:

A measured section and a graphic section in this publication show Litchfield marls and Leitchfield marls some 55 ft above top of Big Clifty sandstone. According to McFarlan (1943) this is first use of Leitchfield as formation name.

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


Map showing publication footprint
  • Usage in publication:
    • Leitchfield formation
  • Modifications:
    • Overview
  • Dominant lithology:
    • Shale
    • Limestone
    • Sandstone
  • AAPG geologic province:
    • Illinois basin
Publication:

Glenn, L.L., 1922, The geology and coals of Webster County; an economic consideration of the coals, the structure and stratigraphy of this region, to which is added a detailed geological map of Webster County: Kentucky Geological Survey Geologic Report, 6th series, v. 5, 249 p.


Summary:

Designated Leitchfield formation and shown on geologic map. Composed of limestone, shale, and sandstone. Thickness not known but may be 400 to 600 ft. Overlain by basal conglomerate of Pennsylvanian rocks. Mississippian age.

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


Map showing publication footprint
  • Usage in publication:
    • Leitchfield Formation*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Illinois basin
Publication:

Swadley, WC, 1962, Geology of the Big Clifty quadrangle, Kentucky: U.S. Geological Survey Geologic Quadrangle Map, GQ-192, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_642.htm]


Summary:

Leitchfield Formation adopted for use in Kentucky by U. S. Geological Survey. "Interbedded shale, siltstone, and sandstone: Shale is dark gray or olive brown; siltstone is thin bedded, greenish gray, and has wavy, irregular bedding planes; sandstone is thin bedded, yellow to light brown, fine grained, limonitic, and contains poorly preserved molds and casts of brachiopods and bryozoans. Only lower part of formation present." Thickness is 40+ ft. Underlain by Glen Dean Limestone.

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


Map showing publication footprint
  • Usage in publication:
    • Leitchfield Formation*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Illinois basin
Publication:

Gildersleeve, Benjamin, 1968, Geologic Map of the Bee Spring quadrangle, Edmonson and Grayson Counties, Kentucky: U.S. Geological Survey Geologic Quadrangle Map, GQ-757, scale 1:24,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_2063.htm]


Summary:

Tar Springs Sandstone reduced in rank to basal Member of Leitchfield Formation in area of report.

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


Map showing publication footprint
  • Usage in publication:
    • Leitchfield Formation*
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Illinois basin
Publication:

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 ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).