tholeiite

Tholeiitic basalt dike & peperite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just east of the Potter Mine, east of Timmins, Ontario, Canada) 1
by James St. John

Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 1
by James St. John

Basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just east of the Potter Mine, east of Timmins, Ontario, Canada) 33
by James St. John

Basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just east of the Potter Mine, east of Timmins, Ontario, Canada) 31
by James St. John

Basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just east of the Potter Mine, east of Timmins, Ontario, Canada) 12
by James St. John

Gooseberry Falls - Upper Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 1
by James St. John

Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 4
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 2
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 1
by James St. John

Basaltic lapillistone (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; just east of the Potter Mine, east of Timmins, Ontario, Canada) 6
by James St. John

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 10
by James St. John

Plunge pool of Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA)
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 11
by James St. John

Hyaloclastic sandstone (probably Pliocene; Interstate 84 roadcut, Portland, Oregon, USA) 4
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 3
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 4
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 6
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 5
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 6
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 8
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 5
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 3
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 2
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 1
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 7
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 10
by James St. John

Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 9
by James St. John

Hyaloclastic sandstone (probably Pliocene; Interstate 84 roadcut, Portland, Oregon, USA) 3
by James St. John

Gooseberry Falls - Lower Falls (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 4
by James St. John

Hyaloclastic sandstone (probably Pliocene; Interstate 84 roadcut, Portland, Oregon, USA) 2
by James St. John

Sea arch (Yaquina Head, Oregon, USA)
by James St. John

Volcanic lapilli (August 2023 eruption of Shishaldin Volcano, Aleutian Arc, Alaska, USA)
by James St. John