U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Ellenburger

Usage:

Ellenburger Group (NM?,TX*)
Ellenburger Limestone (TX)
Ellenburger Formation (NM?)


Subunits:

GROUP STATUS (alphabetical) --all in TX*: Gorman Formation, Honeycut Formation, Tanyard Formation.


Geologic age:

Early Ordovician*


Type section, locality, area and/or origin of name:

Not designated. Named from Ellenburger Hills, Burnet Co., TX (Paige, 1912).
Type section: composite Tanyard-Gorman section adjoining the Ellenburger Hills. Section is relatively inaccesible. Combined Moore Hollow and Warren Springs sections south of Llano, Llano Co., [TX], are designated as standard section (Cloud and Barnes, 1948).


AAPG geologic province:

Llano uplift*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).