Bigby-Cannon (Upper Bigby) - Wilson, 1949 (Ordovician of the United States)
Where: Tennessee (35.5° N, 86.5° W: paleocoordinates 28.1° S, 66.4° W)
• local area-level geographic resolution
When: Upper Bigby Member (Bigby-Cannon Limestone Formation), Shermanian (460.9 - 449.5 Ma)
• Includes some Cannon facies
• member-level stratigraphic resolution
Environment/lithology: sand shoal; lithified, shelly/skeletal, gray grainstone and wackestone
• Geological information from field notes of S.M. Holland and M.E. Patzkowsky
• mostly skeletal grainstone, phosphatic, cross-bedded. includes some cannon facies: medium to thin-bedded, dark gray, skeletal to peloidal wackestone and packstone, interbedded with dark gray mudstones.
Preservation: original calcite, replaced with calcite
Primary reference: C. W. Wilson. 1949. Pre-Chattanooga stratigraphy in Central Tennessee. Tennessee Division of Geology Bulletin 56:1-415 [S. Holland/S. Holland] more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 5357: authorized by Steven Holland, entered by Steven Holland on 27.09.1999