Hueco Formation Explained
The Hueco Formation is a geologic formation in west Texas and southern New Mexico.[1] [2] [3] It preserves fossils dating back to the early Permian period.[4] [5]
Description
The formation is composed most of massive gray fossiliferous limestone with some shale and sandstone, with a thickness in excess of 5000feet. It overlies the Panther Seep Formation[6] with a slight disconformity, and its base is typically a thick biostromal limestone bed.[7] The formation unconformably underlies the Wilkie Ranch Formation.[8] It intertongues with the Abo Formation in the southern San Andres Mountains.[5]
In the Robledo Mountains, the Hueco is promoted to group rank and divided into (in ascending stratigraphic order) the Shalem Colony, Community Pit, Robledo Mountains, and Apache Dam Formations.[9] In the Hueco Mountains, the uppermost formation is the Alacran Mountain Formation.[10]
The Hueco Formation is contemporary with the Abo Formation and represents continued marine sediment deposition south of the prograding Abo deltas.[7]
History of investigation
The formation was first defined by G.B. Richardson in 1904, but mistakenly thought to be Pennsylvanian in age.[1] Nelson dated the formation as earliest Permian in the Franklin Mountains in 1940.[4] Spencer G. Lucas et al. promoted the formation to group rank in 1998.[9]
See also
References
- Cys . J.M. . 1976 . Wilkie Ranch Formation, new Permian unit in Finlay Mountains, West Texas . American Association of Petroleum Geologists Bulletin . 60 . 7 . 1107–1110 . 10.1306/C1EA3627-16C9-11D7-8645000102C1865D.
- Bachman . G.O. . Hayes . P.T. . 1958 . Stratigraphy of Upper Pennsylvanian and Lower Permian rocks in the Sand Canyon area, Otero County, New Mexico . Geological Society of America Bulletin . 69 . 6 . 689–700 . 10.1130/0016-7606(1958)69[689:SOUPAL]2.0.CO;2. 1958GSAB...69..689B .
- Kelley . S. . Matheny . J.P. . 1983 . Geology of Anthony quadrangle, Dona Ana County, New Mexico . New Mexico Bureau of Mines and Mineral Resources Geologic Map . 54 . 20 September 2020.
- Encyclopedia: Kues . B.S. . Giles . K.A. . 2004 . The late Paleozoic Ancestral Rocky Mountain system in New Mexico . Mack . G.H. . Giles . K.A. . The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11 . 95–136 . 9781585460106.
- Lucas . Spencer G. . Spencer G. Lucas . Heckert . Andrew B. . Estep . John W. . Cook . Casey W. . 1998 . Stratigraphy of the lower Permian Hueco Group in the Robledo Mountains, Dona Ana County, New Mexico. . New Mexico Museum of Natural History Bulletin . 12 . 4 August 2020.
- Nelson . L.A. . 1940 . Paleozoic stratigraphy of the Franklin Mountains, West Texas . American Association of Petroleum Geologists Bulletin . 24 . 1 . 157–172 . 10.1306/3D93319A-16B1-11D7-8645000102C1865D.
- Richardson . G.B. . 1904 . Report of a reconnaissance in Trans-Pecos Texas north of the Texas and Pacific Railway . University of Texas Mineral Survey Bulletin . 9 . 2152/24408 . 19 September 2020.
- Richardson . G B. . American Journal of Science . 25 . 150 . Jun 1908 . 474 . Paleozoic Formations in Trans-Pecos Texas . 10.2475/ajs.s4-25.150.474 . 1908AmJS...25..474R . 20 September 2020.
- Richardson . G.B. . 1914 . Description of the Van Horn quadrangle, Texas . U.S. Geological Survey Geologic Atlas of the United States . Van Horn folio . 194.
- Williams . T.E. . 1963 . Fusulinidae of the Hueco Group (Lower Permian), Hueco Mountains, Texas . Peabody Museum of Natural History Bulletin . 18.
Notes and References
- Richardson 1904
- Richardson 1908
- Richardson 1914
- Nelson 1940
- Bachman and Hayes 1958
- Kelley and Matheny 1983
- Kues and Giles 2004
- Cys 1976
- Lucas et al. 1998
- Williams 1963
