Geologic Unit: Coffee
Coffee Sand of Selma Group (TN*,MS*)
Coffee Sand (MO*,IL*)
Coffee Formation of Selma Group (TN,MS)
Coffee Landing, Hardin Co., southwestern TN (Safford, 1864).
Tupelo Tongue (at base) (MS*)
Unit Name History:
Named (Safford, 1864).
Revised (Stephenson, 1911).
Extended into MS (Stephenson, 1917).
Revised (Stephenson, 1936) [From GNC index card files; not synopsized].
Overview (Wilmarth, 1938).
Revised (Stephenson and Monroe, 1940).
Assigned to Selma group (Belt and others, 1945).
Overview (Parks, 1960; Dockery and Jennings, 1988).
Overview (Merrill and others, 1988).
Revised (Dockery, 1992).
Biostratigraphic dating (Wingard, 1993).
Biostratigraphic dating; Areal limits; Contacts revised (Harrison and Litwin, 1997).
Areal limits; Overview (Harrison, 1999).
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Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.
"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().
Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).
U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013