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Geologic Unit: Palzo
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Map showing publication footprint
  • Usage in publication:
    • Palzo sandstone
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Sandstone
  • AAPG geologic province:
    • Illinois basin
Publication:

Weller, J.M., Henbest, L.G., and Dunbar, C.O., 1942, Stratigraphy of the fusuline-bearing beds of Illinois, IN Dunbar, C.O., and Henbest, L.G., Pennsylvanian Fusulinidae of Illinois: Illinois Geological Survey Bulletin, no. 67, p. 9-34., [1943]


Summary:

Pg. 32, 46 (table 1), 63, pl. 1. Palzo sandstone of Carbondale group. Sandstone at base of Carbondale group; overlies DeKoven coal.
Type locality: in SE/4 sec. 16, T. 10 S., R. 4 E., Williamson Co., southern IL. Named from exposures at Palzo, 10 mi north of Marion.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2908).


Map showing publication footprint
  • Usage in publication:
    • Palzo sandstone member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Illinois basin
Publication:

Kosanke, R.M., Simon, J.A., Wanless, H.R., and Willman, H.B., 1960, Classification of the Pennsylvanian strata of Illinois: Illinois Geological Survey Report of Investigations, no. 214, 84 p.


Summary:

Pg. 32, 46 (table 1), 63, pl. 1. Palzo sandstone member of Spoon formation (new) of Kewanee group (new). Rank reduced to member status in Spoon formation. Occurs at top of formation above DeKoven coal member. Maximum thickness 40 feet. Age is Pennsylvanian. Presentation of new rock-stratigraphic classification of Pennsylvanian strata in Illinois.
Type locality: exposures at Palzo, 10 mi southeast of Marion, in SE/4 sec. 16, T. 10 S., R. 4 E., Marion 15-min quadrangle, Williamson Co., southern IL. (See Weller and others, 1942 [1943], p. 10, footnote; G.H. Cady, 1942, US Bur. Mines Tech. Paper 641, p. 9, 10 (fig. 3).)
[Typographical error (US geologic names lexicon, USGS Bull. 1200, p. 2908): village of Palzo is 10 mi southeast of Marion, not north.]

Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 2908).


Map showing publication footprint
  • Usage in publication:
    • Palzo Sandstone Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Illinois basin
Publication:

Nelson, W.J., Devera, J.A., and Jacobson, R.J., 1991, Stratigraphy of the bedrock [includes abstract and introduction], IN Nelson, W.J., and others, Geology of the Eddyville, Stonefort, and Creal Springs quadrangles, southern Illinois: Illinois Geological Survey Bulletin, no. 96, p. 1-43, (incl. geologic maps, scale 1:24,000), Accompanied by the Creal Springs (IGQ-4), Eddyville (IGQ-5), and Stonefort (IGQ-6) Illinois Geol. Survey Geol. Quad. Ser. maps, scale 1:24,000. Available online.


Summary:

Base of Carbondale Formation lowered 70 ft from base of Colchester Coal Member to base of Davis Coal Member. Therefore, Davis Coal Member, Dekoven Coal Member, and Palzo Sandstone Member now assigned to Carbondale Formation.

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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