- Usage in publication:
-
- Chaquaqua member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Shale
- Sandstone
- AAPG geologic province:
-
- Las Animas arch
- Las Vegas-Raton basin
Summary:
Pg. 81-82. Chaquaqua member [of Lykins formation]. A series of brick red sandy shales and crinkled purplish limy sandstones, forming lower member of Lykins formation in this area. Thickness exposed 122 feet, consisting of (descending): 2 feet of maroon shales; 21 feet of massive dark red sandstone; 5 feet of maroon shale; 36 feet of brick red sandy shale; 18 feet of purplish, limy, crinkled sandstone; 30 feet of brick red sandstone; and 10 feet of purplish limy sandstone. Underlies Red Canyon member of Lykins formation and is oldest rock exposed in area. Age is Triassic(?).
Named from exposures in Chaquaqua Canon [Chacuaco Canyon], Las Animas Co., southeastern CO. Recognized in Las Animas, Otero, and Bent Cos.
Source: US geologic names lexicon (USGS Bull. 896, p. 401).
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 ([ ]).