| Avon Park Formation | |
| Type: | Geological formation |
| Age: | Eocene |
| Otherlithology: | Mudstone |
| Namedby: | Applin & Applin 1944 |
| Country: |  United States |
| Subunits: | None |
| Underlies: | Ocala Limestone (in part) |
| Extent: | Citrus and Levy County |
The Avon Park Formation is a Middle Eocene geologic formation and is the oldest exposed sediments in Florida, United States.
Period
Paleogene
Epoch
Middle Eocene~55.8 to 33.9 mya, calculates to a period of
Faunal stage
Clarkforkian through early Chadronian
The Avon Park formation is located on the crest of the Ocala Platform in Levy County with three distinct outcroppings. Citrus County has one outcropping near the county line with Levy County.
The Avon Park Formation consists of cream to light-brown or tan, poorly hardened to very hard, grainstone, packstone and wackestone, with rare mudstone. Fossils found throughout but not densely. These limestones are interbedded with vuggy dolomites which are soft to very hard and tan to brown, very fine to medium crystalline structure.
The Avon Park Formation, as with many formations, is part of the Floridan Aquifer system. Parts of the Avon Park Formation comprise important, subregional confining units within that system.
The fossils are in molds and casts and include: