Maine Mineral And Gem Museum

Pillow Basalt

Pillow basalts form when basaltic lava erupts underwater. The lava cools rapidly on all sides forming a pillow shape that can break open and extrude more lava from its interior. This is a characteristic example of pillow basalt, from the Castine Formation.

Location: Condon Point, South Brooksville, Hancock County

Gift of The Vaaland Club