- Usage in publication:
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- La Tuna member
- Modifications:
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- Areal extent
- AAPG geologic province:
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- Orogrande basin
Summary:
Pg. 89. [La Tuna member of Magdalena formation.] In Franklin Mountains, western Texas, Magdalena formation divided into (ascending) La Tuna, Berino, and Bishops Caps members (all new). [Age is Middle Pennsylvanian (Strawn).].
See also University of Colorado Bulletin, v. 32, no. 17.
Source: US geologic names lexicon (USGS Bull. 1200, p. 2116).
- Usage in publication:
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- La Tuna member
- Modifications:
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- Principal reference
- Biostratigraphic dating
- Dominant lithology:
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- Limestone
- Chert
- AAPG geologic province:
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- Orogrande basin
Summary:
Pg. 167, 170. La Tuna member of Magdalena formation. Thickness about 361 feet. Basal part is massive light- to dark-gray limestone, 340 feet thick. Underlies Berino member; overlies Helms shale. [Age is Early Pennsylvanian.] Origin of name given.
Named from town of La Tuna [now Anthony], on Santa Fe RR at TX-NM line, [Canutillo 7.5-min quadrangle], northernmost El Paso Co., western TX.
[Type locality:] section measured along western flank of Franklin Mountains, opposite Vinton, [Vinton Canyon, approx. Lat. 31 deg. 58 min. 00 sec. N., Long. 106 deg. 31 min. 30 sec. W., Canutillo 7.5-min quadrangle], El Paso Co., western TX (see also Harbour, 1972).
Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 2116).
- Usage in publication:
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- La Tuna Member*
- Modifications:
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- Principal reference
- Biostratigraphic dating
- Adopted
- Dominant lithology:
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- Limestone
- Chert
- AAPG geologic province:
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- Orogrande basin
Summary:
Pg. 43-50, pls. La Tuna Member of Magdalena Formation. Dense crinoidal dark-gray cliff-forming limestone with abundant lenses of aphanitic black chert. Thickness 423 feet. Overlies Mississippian Helms Formation and underlies Berino Member of Magdalena Formation. Fossils indicate Morrowan. (La Tuna Member of Magdalena Formation adopted by the USGS, 1972.)
[Type locality:] in Vinton Canyon, 2 to 3 mi east of Westway on western flank of Franklin Mountains, [approx. Lat. 31 deg. 58 min. 00 sec. N., Long. 106 deg. 31 min. 30 sec. W., Canutillo 7.5-min quadrangle], El Paso Co., western TX (see also Nelson, 1940).
Source: Publication.
- Usage in publication:
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- La Tuna Formation
- Modifications:
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- Revised
- AAPG geologic province:
-
- Orogrande basin
Kues, B.S., 2001, The Pennsylvanian System in New Mexico; Overview with suggestions for revisions of stratigraphic nomenclature: New Mexico Bureau of Geology and Mineral Resources, New Mexico Geology, v. 23, no. 4, p. 103-122.
Summary:
Pg. 106-107 (fig. 3, strat. chart), 116. La Tuna Formation. Previously a formation of Magdalena Group (citing D.V. LeMone, 1982, West Texas Geol. Soc. Pub. no. 82-76, p. 42-72; D.V. LeMone, 1992, West Texas Geol. Soc. Pub. no. 92-92, p. 63-69); [use of Magdalena Group discarded]. Recognized in Franklin Mountains, New Mexico-Texas. Consists of predominantly cliff-forming, gray, cherty limestones with algal mounds and thin lenses of shale near top. Thickness up to 511 feet (156 m). Age is Early to Middle Pennsylvanian (Morrowan to early Atokan).
Source: 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).