Where: Smith County, Mississippi (32.0° N, 89.5° W: paleocoordinates 32.3° N, 83.0° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Marianna Limestone Formation, Rupelian (33.9 - 28.4 Ma)
• The Mint Spring Formation - Marianna transgressive sequence began with the subsidence of Forest Hill delta systems. As the northern Gulf waters transgressed inland over the delta plain and estuarine envoronments, the Mint Spring Formation was deposited as a destructional shelf sand in the near-shore environments. Carbonates of the Marianna Limestone were deposited above this sand in the deeper waters of an off shore carbonate shelf.
• formation-level stratigraphic resolution
Environment/lithology: offshore; lithified, conglomeratic, calcareous conglomerate and carbonate
Size class: mesofossils
Preservation: original aragonite, original calcite
Collection methods: bulk, mechanical,
• bivalves only.
Primary reference: D. T. Dockery. 1982. Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources Bureau of Geology 123:1-261 [L. Ivany/S. DeLong] more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 5951: authorized by Linda Ivany, entered by Sarah DeLong on 04.01.2000
Creative Commons license: CC BY (attribution)