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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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 34
Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 34
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Columnar-jointed phonolite (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 16
Columnar-jointed phonolite (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 16
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Sunstone (Tertiary; Spectrum Mine, Oregon, USA) 8
Sunstone (Tertiary; Spectrum Mine, Oregon, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 5
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Columnar-jointed phonolite (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 20
Columnar-jointed phonolite (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 20
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Syenite (Cuttingsville Complex, mid-Cretaceous, 97 Ma; near Cuttingsville, Vermont, USA) 1
Syenite (Cuttingsville Complex, mid-Cretaceous, 97 Ma; near Cuttingsville, Vermont, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Sulfidic metatroctolite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA)
Sulfidic metatroctolite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Erg Chech 002 — 1,857g End Cut Faces
Erg Chech 002 — 1,857g End Cut Faces
by jurvetson

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Stillwater Complex (Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 55
Stillwater Complex (Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 55
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Obsidian 24
Obsidian 24
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 2
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Auriga Nunataks marble melange with mafic clasts
Auriga Nunataks marble melange with mafic clasts
by euphro

クリエイティブ・コモンズ 表示-継承 2.1

サイズ変更など

Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 5
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 5
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Ordinary chondrite (North West Africa 3189 Meteorite)
Ordinary chondrite (North West Africa 3189 Meteorite)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Erg Chech 002 — 47g Slice
Erg Chech 002 — 47g Slice
by jurvetson

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Quartz-gold hydrothermal vein rock (Neoarchean, 2.67 Ga; Hollinger Mine, Timmins, Ontario, Canada) 7
Quartz-gold hydrothermal vein rock (Neoarchean, 2.67 Ga; Hollinger Mine, Timmins, Ontario, Canada) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Mahogany obsidian 1
Mahogany obsidian 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Chromitic dunite (Stillwater Complex, Neoarchean, 2.71 Ga; Beartooth Mountains, Montana, USA) 6
Chromitic dunite (Stillwater Complex, Neoarchean, 2.71 Ga; Beartooth Mountains, Montana, USA) 6
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Gabbronorite ("Impala Black Granite") (Bushveld Complex, 2.054-2.061 Ga, Paleoproterozoic; north of Rustenburg, North West Province, South Africa)
Gabbronorite ("Impala Black Granite") (Bushveld Complex, 2.054-2.061 Ga, Paleoproterozoic; north of Rustenburg, North West Province, South Africa)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1
Lamprophyre breccia (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Black porphyritic metarhyolite (Utley Rhyolite, Paleoproterozoic, 1765 Ma; Utley Rhyolite Quarry, near Green Lake, Wisconsin, USA) 4
Black porphyritic metarhyolite (Utley Rhyolite, Paleoproterozoic, 1765 Ma; Utley Rhyolite Quarry, near Green Lake, Wisconsin, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Spinifex komatiite sill in cumulate komatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 25
Spinifex komatiite sill in cumulate komatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 25
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 3
Lamprophyre breccia & lamprophyre dike (Cresson Pipe, Cripple Creek Diatreme, Early Oligocene, ~28.5 Ma; western side of Cresson Pit, Cripple Creek Mining District, Colorado, USA) 3
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Basalt (Lower Eocene, 50-56 Ma; Brown's Hill Quarry, near North Pole, Alaska, USA) 2
Basalt (Lower Eocene, 50-56 Ma; Brown's Hill Quarry, near North Pole, Alaska, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Spinifex metakomatiite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 30
Spinifex metakomatiite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 30
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Xenoliths in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 8
Xenoliths in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 1
Sulfidic anorthosite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

End-Pleistocene large pothole in tholeiitic basalt (Clam Falls Volcanics, Mesoproterozoic, ~1.1 Ga; Interstate State Park, Taylors Falls, Minnesota, USA) 12
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 111
Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 111
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 1
Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 8
Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Sunstone (Tertiary; Spectrum Mine, Oregon, USA) 11
Sunstone (Tertiary; Spectrum Mine, Oregon, USA) 11
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 4
Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 4
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Pisolitic bauxite 1
Pisolitic bauxite 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Volkhovites (Pleistocene; eastern side of the Volkhov River, Kirishi, southwest of St. Petersburg, Russia)
Volkhovites (Pleistocene; eastern side of the Volkhov River, Kirishi, southwest of St. Petersburg, Russia)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Pentlandite in pyrrhotite (late Paleoproterozoic, 1.85 Ga; South Mine, Sudbury Impact Crater, Ontario, Canada) 1
Pentlandite in pyrrhotite (late Paleoproterozoic, 1.85 Ga; South Mine, Sudbury Impact Crater, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 1
Xenolith in granodiorite (Giant Forest Granodiorite, mid-Cretaceous, 97-102 Ma; Moro Rock, Sequoia National Park, California, USA) 1
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 7
Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 7
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Shishaldin Volcano with minor steam plume (afternoon, 12 November 2023) (Aleutian Arc, Alaska, USA)
Shishaldin Volcano with minor steam plume (afternoon, 12 November 2023) (Aleutian Arc, Alaska, USA)
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 8
Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 8
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
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
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

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Sulfidic bronzitite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 2
Sulfidic bronzitite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 2
by James St. John

クリエイティブ・コモンズ 表示 2.1

サイズ変更など


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