Bone Valley Formation

The Bone Valley Formation is a geologic formation in Florida. It is sometimes classified as the upper member of the Peace River Formation of the Hawthorn Group.^[2] It contains economically important phosphorite deposits that are mined in west-central Florida, as well as rich assemblages of vertebrate fossils.

Bone Valley Formation
Stratigraphic range: Middle Miocene to Early Pliocene PreꞒ Ꞓ O S D C P T J K Pg N ↓
Fossil from the Bone Valley Formation
Type	Formation
Unit of	Hawthorn Group
Underlies	Pleistocene sand
Overlies	Peace River Formation
Thickness	30 metres (100 ft)
Lithology
Primary	Sand, marl, clay
Other	Phosphorite pebbles, chert
Location
Region	Florida
Country	United States
Type section
Named for	Bone Valley, Florida
Named by	G.C. Matson and F.G. Clapp, 1909[1]

Lithology

The Bone Valley Formation consists of sandy marl that contains pebbles of phosphate and chert, fragments of bone, and other organic remains. The finer grained material is soft and plastic when wet, but hardens when dry.^[1]

Age

The Bone Valley Formation contains mammal fossils and its age has been determined by mammalian biostratigraphy.
Period: Neogene
Epoch: Middle Miocene to Early Pliocene
North American land mammal age: Barstovian to Hemphillian^[3]

Paleontology

The Bone Valley Formation includes a diverse assemblage of vertebrate fossils. These include remains of sea turtles,^[4] equines,^[5] felines,^[6][7] peccaries,^[8] and others.

See also

• Earth sciences portal
• Florida portal
• Paleontology portal

• Bone Valley
• List of fossiliferous stratigraphic units in Florida