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National Geologic Map Database

Geologic Unit: Sycamore

Usage:

Sycamore Limestone (OK*)
Sycamore Formation (OK)

[Preoccupied. Name previously applied to Sycamore Sand of Hill (1901) in TX.]


Subunits:

(alphabetical) --all in OK: Cornell Ranch Member, Worthey Member.


Geologic age:

Middle Mississippian (Visean; Osagean and Meramecian)*


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

Named from Sycamore Creek, which crosses its outcrop in T. 3 S., R. 4 E., Johnston Co., Arbuckle Mountains, central southern OK (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

South Oklahoma folded belt*


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 ([ ]).