tholeiite
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Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 13
by James St. John
by James St. John
サイズ変更など
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 2
by James St. John
by James St. John
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 20
by James St. John
by James St. John
Diabase dike (ophitic olivine tholeiite) (right) intruding gabbroic anorthosite to anorthositic gabbro (left) (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 2
by James St. John
by James St. John
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 16
by James St. John
by James St. John
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 3
by James St. John
by James St. John
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 14
by James St. John
by James St. John
Vesicular tholeiitic olivine basalt (Boring Volcanic Field, Upper Pliocene, probably ~3 Ma; Crown Point roadcut, Multnomah County, Oregon, USA) 2
by James St. John
by James St. John
Basalt (McCartys Flow, Holocene, ~2.4 to 3.9 ka; southeast of Grants, New Mexico, USA) 8
by James St. John
by James St. John
End-Pleistocene pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John
by James St. John
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 8
by James St. John
by James St. John
Quartz tholeiite basalt lava flow (flow A, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 12
by James St. John
by James St. John
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 7
by James St. John
by James St. John
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 6
by James St. John
by James St. John
Tholeiitic basalt dike with flow layering & peperite & 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) 1
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 10
by James St. John
by James St. John
Columnar-jointed olivine tholeiite basalt lava flow above Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 2
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 5
by James St. John
by James St. John
Vesicular tholeiitic olivine basalt (Boring Volcanic Field, Upper Pliocene, probably ~3 Ma; Crown Point roadcut, Multnomah County, Oregon, USA) 1
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bottomless Pit Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 4
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 9
by James St. John
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) 2
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 6
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 12
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 5
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 13
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 12
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 8
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 11
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 10
by James St. John
by James St. John
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 15
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 7
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John
by James St. John
Columnar-jointed olivine tholeiite basalt lava flow above Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 1
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 3
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John
by James St. John
End-Pleistocene large pothole complex in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Devil's Parlor Pothole Complex, Interstate State Park, Taylors Falls, Minnesota, USA) 4
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 4
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 9
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bottomless Pit Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bottomless Pit Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 3
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 8
by James St. John
by James St. John
Olivine tholeiite basalt lava flow at Gooseberry Falls - Lower Falls (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 1
by James St. John
by James St. John
End-Pleistocene pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John
by James St. John
Autobrecciated amygdaloidal quartz tholeiite basalt aa lava flow top (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 38
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bottomless Pit Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John
by James St. John
End-Pleistocene large potholes in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John
by James St. John
Columnar-jointed olivine tholeiite basalt lava flow below Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 3
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Bake Oven Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 13
by James St. John
by James St. John
Columnar-jointed olivine tholeiite basalt lava flow below Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 5
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 1
by James St. John
by James St. John
Sulfidic basaltic lapillistone (copper ore) (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 1
by James St. John
by James St. John
Quartz tholeiite basalt lava flow (flow B, Two Harbors Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Burlington Bay, Two Harbors, Minnesota, USA) 7
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 2
by James St. John
by James St. John
Columnar-jointed olivine tholeiite basalt lava flow below Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River Basalts, North Shore Volcanic Series, Mesoproterozoic, 1097-1098 Ma; Gooseberry Falls State Park, Minnesota, USA) 4
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 5
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 4
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 3
by James St. John
by James St. John
End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Lily Pond Pothole, Interstate State Park, Taylors Falls, Minnesota, USA) 8
by James St. John
by James St. John
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