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Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 18
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 18
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
The City of Rocks National Reserve
The City of Rocks National Reserve
by RuggyBearLA

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; iron mine at or near Temagami, southeastern Ontario, Canada) 2
Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; iron mine at or near Temagami, southeastern Ontario, Canada) 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

Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 56
Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 56
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
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 16
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, 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
Quartz-rich lapilli metatuff (quartz-rich meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA)
Quartz-rich lapilli metatuff (quartz-rich meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, 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

Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.710-2.718 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 51
Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.710-2.718 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 51
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
Chlorite schist (Neoarchean; Soudan Mine, Soudan, Minnesota, USA) 2
Chlorite schist (Neoarchean; Soudan Mine, Soudan, 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
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

North Star Mine (Hellroaring Plateau, Beartooth Mountains, Montana, USA) 2
North Star Mine (Hellroaring Plateau, 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
The City of Rocks National Reserve
The City of Rocks National Reserve
by RuggyBearLA

クリエイティブ・コモンズ 表示 2.1

サイズ変更など
Vesicular metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; west-southwest of the Potter Mine, east of Timmins, Ontario, Canada) 2
Vesicular metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; west-southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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

Sulfidic argillite & 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) 6
Sulfidic argillite & 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) 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
Magnetitic serpentinite (Red Lodge Chromite District, Precambrian; Rock Creek Canyon, Beartooth Mountains, Montana, USA) 1
Magnetitic serpentinite (Red Lodge Chromite District, Precambrian; Rock Creek Canyon, 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 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

Spinifex metakomatiite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 8
Spinifex metakomatiite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near 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
Pyritic iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Vermilion Iron Range, Minnesota, USA)
Pyritic iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Vermilion Iron Range, Minnesota, 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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 22
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 22
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

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 41
Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill cores at the Potter Mine, east of Timmins, Ontario, Canada) 41
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
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 2
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, 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
Lapis lazuli (lazuritic metamorphite) (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 6
Lapis lazuli (lazuritic metamorphite) (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 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
Interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 15
Interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 15
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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 38
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 38
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

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 23
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 23
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 with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 122
Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 122
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
Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 44
Jaspilite banded iron formation (BIF) (Negaunee Iron-Formation, Paleoproterozoic, 1.874 or 2.11 Ga; Jasper Knob, Ishpeming, Michigan, USA) 44
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
The City of Rocks National Reserve
The City of Rocks National Reserve
by RuggyBearLA

クリエイティブ・コモンズ 表示 2.1

サイズ変更など

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 23
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 23
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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 5
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, 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) 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
Quartz-gold hydrothermal vein rock (Neoarchean, 2.67 Ga; Hollinger Mine, Timmins, Ontario, Canada) 6
Quartz-gold hydrothermal vein rock (Neoarchean, 2.67 Ga; Hollinger Mine, Timmins, Ontario, Canada) 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
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just west of Ely, Minnesota, USA) 9
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just west of Ely, 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

Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 116
Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 116
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
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 3
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, 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
Meta-iron formation (Archean; Quad Creek section - Beartooth Highway roadcut, Beartooth Mountains, Montana, USA) 5
Meta-iron formation (Archean; Quad Creek section - Beartooth Highway roadcut, Beartooth Mountains, Montana, 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

Quartz with hematite coatings & inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA)
Quartz with hematite coatings & inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, 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
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 1
Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, 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
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) 22
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) 22
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

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 19
Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 19
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
Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, USA) 1
Jaspilite (Ironwood Iron-Formation, Paleoproterozoic, ~1.874-1.878 Ga; Wakefield, Gogebic Iron Range, Upper Peninsula of Michigan, 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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 44
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 44
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

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 45
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 45
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 serpentintite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 12
Sulfidic serpentintite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, 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
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

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 42
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 42
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 xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 114
Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 114
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
Gneiss (Archean; Windy Lake Northwest roadcut, Sudbury Impact Structure, Ontario, Canada) 3
Gneiss (Archean; Windy Lake Northwest roadcut, Sudbury Impact Structure, Ontario, Canada) 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

Lapis lazuli (lazuritic gneiss) (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 2
Lapis lazuli (lazuritic gneiss) (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 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, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 25
Spinifex metakomatiite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 26
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 26
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) 23
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) 23
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
Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 41
Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 41
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
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
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 39
Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 39
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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