Blowing Rocks Preserve
Blowing Rocks Preserve is located on Jupiter Island. The outcrops extend for a mile south from the boardwalk. This preserve is the best place to find intact fossils in the Anastasia Formation of Palm Beach and Martin Counties. The outcrop is highly bioturbated. Large and small burrows crater the surface. Laminated calcium carbonate crusts contain both botryoidal growths and root impressions. Solution pipes are common. Some form “blow holes”, shooting water up to 50 feet into the air at high tide. Others have been filled in by cement and become lithified infillings. Wave erosion features include coves and promontories, notches, caves, abrasion platforms, and collapsed rock masses.
Solution pipe “blow hole” at high tide
Extensive bioturbation on the side of the outcrop
Botryoidal growths on laminated calcium carbonate crust
Cliffs, notches, caves, and a rock mass
Burrows and laminated crusts on the surface of the outcrop
Large burrows on the side of the outcrop