archean

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Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 86
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48305309136.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48305309136_e641d7a3f8_m.jpg" alt="" /></a><br />Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 86 / James St. John</span>

サイズ変更など

Sulfidic basaltic lapillistone (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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47831540452.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47831540452_736e42a491_m.jpg" alt="" /></a><br />Sulfidic basaltic lapillistone (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 / James St. John</span>

サイズ変更など

Glacial striations from Pleistocene glaciation on Mud Lake sequence sedimentary rocks (Neoarchean; Bourgin Road roadcut, Virginia, Minnesota, USA) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22871931003.html" target="_blank"><img src="http://farm6.static.flickr.com/5685/22871931003_729ef179d3_m.jpg" alt="" /></a><br />Glacial striations from Pleistocene glaciation on Mud Lake sequence sedimentary rocks (Neoarchean; Bourgin Road roadcut, Virginia, Minnesota, USA) 5 / James St. John</span>

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) 7
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21501287526.html" target="_blank"><img src="http://farm1.static.flickr.com/715/21501287526_4afe0419f5_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just west of Ely, Minnesota, USA) 7 / James St. John</span>

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) 33
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33950912038.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33950912038_08ba394394_m.jpg" alt="" /></a><br />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) 33 / James St. John</span>

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) 48
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19037960688.html" target="_blank"><img src="http://farm1.static.flickr.com/393/19037960688_7e4d639a55_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 48 / James St. John</span>

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) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23758106675.html" target="_blank"><img src="http://farm6.static.flickr.com/5688/23758106675_f68ac9d06f_m.jpg" alt="" /></a><br />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 / James St. John</span>

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) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19199008986.html" target="_blank"><img src="http://farm1.static.flickr.com/418/19199008986_112982bd1f_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Glacial striations from Pleistocene glaciation on Mud Lake sequence sedimentary rocks (Neoarchean; Bourgin Road roadcut, Virginia, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23472958896.html" target="_blank"><img src="http://farm6.static.flickr.com/5760/23472958896_b11d1135b2_m.jpg" alt="" /></a><br />Glacial striations from Pleistocene glaciation on Mud Lake sequence sedimentary rocks (Neoarchean; Bourgin Road roadcut, Virginia, Minnesota, USA) 4 / James St. John</span>

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) 7
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47827254191.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47827254191_4ab4eaa154_m.jpg" alt="" /></a><br />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) 7 / James St. John</span>

サイズ変更など

Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21846263914.html" target="_blank"><img src="http://farm1.static.flickr.com/589/21846263914_3a81587e8b_m.jpg" alt="" /></a><br />Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50681388027.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50681388027_00793644dd_m.jpg" alt="" /></a><br />Impact-pulverized iron formation (Early Permian, ~280 Ma; Terny Impact Crater, Ukraine) 5 / James St. John</span>

サイズ変更など

Quartz (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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23230459939.html" target="_blank"><img src="http://farm1.static.flickr.com/717/23230459939_c0a19b033b_m.jpg" alt="" /></a><br />Quartz (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21587553966.html" target="_blank"><img src="http://farm6.static.flickr.com/5799/21587553966_9998f6593c_m.jpg" alt="" /></a><br />Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 4 / James St. John</span>

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) 27
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40876555433.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40876555433_fd74e42e31_m.jpg" alt="" /></a><br />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) 27 / James St. John</span>

サイズ変更など

Spinifex komatiite sills 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) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46926083995.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46926083995_fa5ddd687e_m.jpg" alt="" /></a><br />Spinifex komatiite sills 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) 1 / James St. John</span>

サイズ変更など

Faulted metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21515880072.html" target="_blank"><img src="http://farm1.static.flickr.com/657/21515880072_50f1d675ae_m.jpg" alt="" /></a><br />Faulted metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Weathered vein in magnetite-quartz banded iron formation (Temagami Iron-Formation, Neoarchean, ~2.736 Ga; Temagami North roadcut, Temagami, Ontario, Canada)
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40833800133.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40833800133_a4e15d6ab3_m.jpg" alt="" /></a><br />Weathered vein in magnetite-quartz banded iron formation (Temagami Iron-Formation, Neoarchean, ~2.736 Ga; Temagami North roadcut, Temagami, Ontario, Canada) / James St. John</span>

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) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/20906414443.html" target="_blank"><img src="http://farm1.static.flickr.com/708/20906414443_25c6fc6f60_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just west of Ely, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Glacially eroded jaspilite banded iron formation outcrop (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19224597835.html" target="_blank"><img src="http://farm1.static.flickr.com/286/19224597835_581d48ed10_m.jpg" alt="" /></a><br />Glacially eroded jaspilite banded iron formation outcrop (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 2 / James St. John</span>

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) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19228731171.html" target="_blank"><img src="http://farm1.static.flickr.com/539/19228731171_587fc4dba2_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 10 / James St. John</span>

サイズ変更など

Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; 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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47820008922.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47820008922_5e4068813d_m.jpg" alt="" /></a><br />Polymetallic massive sulfide (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; Potter Mine, east of Timmins, Ontario, Canada) 2 / James St. John</span>

サイズ変更など

Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40860727123.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40860727123_ffde01c84c_m.jpg" alt="" /></a><br />Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 5 / James St. John</span>

サイズ変更など

Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of 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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22281008670.html" target="_blank"><img src="http://farm1.static.flickr.com/713/22281008670_65b6e441dd_m.jpg" alt="" /></a><br />Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA) 2 / James St. John</span>

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) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23645771122.html" target="_blank"><img src="http://farm6.static.flickr.com/5640/23645771122_973f9e8d03_m.jpg" alt="" /></a><br />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 / James St. John</span>

サイズ変更など

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 8
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50508722971.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50508722971_da695c5dd1_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 8 / James St. John</span>

サイズ変更など

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50508885862.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50508885862_b66bce3868_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 9 / James St. John</span>

サイズ変更など

Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50865688022.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50865688022_76cfc0d2f6_m.jpg" alt="" /></a><br />Massive Pt-Pd-rich sulfide (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 4 / James St. John</span>

サイズ変更など

Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 42
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33951470938.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33951470938_53af0892c1_m.jpg" alt="" /></a><br />Metakomatiite lava flows (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 42 / James St. John</span>

サイズ変更など

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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47820418022.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47820418022_7c0cb4b7e6_m.jpg" alt="" /></a><br />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 / James St. John</span>

サイズ変更など

Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19026398982.html" target="_blank"><img src="http://farm1.static.flickr.com/499/19026398982_00a370160e_m.jpg" alt="" /></a><br />Specularite (high-grade iron ore) (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Soudan Mine, Soudan, Minnesota, USA) 9 / James St. John</span>

サイズ変更など

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) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47872770281.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47872770281_e6dc4bba2c_m.jpg" alt="" /></a><br />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) 11 / James St. John</span>

サイズ変更など

Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21622657361.html" target="_blank"><img src="http://farm1.static.flickr.com/585/21622657361_65934c8246_m.jpg" alt="" /></a><br />Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 3 / James St. John</span>

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) 24
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21443239992.html" target="_blank"><img src="http://farm1.static.flickr.com/702/21443239992_2b832053f2_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 24 / James St. John</span>

サイズ変更など

Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; Sherman Iron Mine, Temagami, Ontario, Canada) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/15058951652.html" target="_blank"><img src="http://farm4.static.flickr.com/3863/15058951652_dac9fca7af_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (BIF) (Temagami Iron-Formation, Neoarchean, 2.736 Ga; Sherman Iron Mine, Temagami, Ontario, Canada) 1 / James St. John</span>

サイズ変更など

Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 12
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50508905252.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50508905252_56750c47ed_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 12 / James St. John</span>

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Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 10
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50508720741.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50508720741_49c753d043_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 10 / James St. John</span>

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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) 44
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/32884983447.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/32884983447_6a2d59baf1_m.jpg" alt="" /></a><br />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) 44 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 50
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19225512495.html" target="_blank"><img src="http://farm1.static.flickr.com/518/19225512495_fa8203b6a7_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 50 / James St. John</span>

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Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 37
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50526470913.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50526470913_4cdec61b65_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 37 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 29
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19229480831.html" target="_blank"><img src="http://farm1.static.flickr.com/542/19229480831_3a3e98430d_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 29 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 34
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18605135253.html" target="_blank"><img src="http://farm1.static.flickr.com/351/18605135253_67393b5581_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 34 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 12
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19224976785.html" target="_blank"><img src="http://farm1.static.flickr.com/258/19224976785_0d2b12e357_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 12 / James St. John</span>

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Sulfidic serpentintite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50839332252.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50839332252_48dbf4536d_m.jpg" alt="" /></a><br />Sulfidic serpentintite (platinum-palladium ore) (Johns-Manville Reef, Stillwater Complex, Neoarchean, 2.71 Ga; Stillwater Mine, Beartooth Mountains, Montana, USA) 11 / James St. John</span>

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Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22971251883.html" target="_blank"><img src="http://farm1.static.flickr.com/760/22971251883_1d43365565_m.jpg" alt="" /></a><br />Quartz with hematite inclusions (hosted in Soudan Iron-Formation, Neoarchean, ~2.722 Ga; iron mine in Soudan, Minnesota, USA) 4 / James St. John</span>

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Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 6
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48296241351.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48296241351_ea341dc3fb_m.jpg" alt="" /></a><br />Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 6 / James St. John</span>

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Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 11
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50508018253.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50508018253_5b5b20544e_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 11 / James St. John</span>

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Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 72
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/48304198191.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48304198191_57bb0939fd_m.jpg" alt="" /></a><br />Lamprophyre with xenolith (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 72 / James St. John</span>

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) 47
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33951604448.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33951604448_35f6786b6c_m.jpg" alt="" /></a><br />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) 47 / James St. John</span>

サイズ変更など

Garnetite (alteration halo around magnetite-rich meta-iron formation) (Archean, metamorphism at ~3.2 Ga & ~2.8 Ga; Quad Creek section - roadcut along the Beartooth Highway, Beartooth Mountains, Montana, USA) 5
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/52616846525.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52616846525_5a869175c8_m.jpg" alt="" /></a><br />Garnetite (alteration halo around magnetite-rich meta-iron formation) (Archean, metamorphism at ~3.2 Ga & ~2.8 Ga; Quad Creek section - roadcut along the Beartooth Highway, Beartooth Mountains, Montana, USA) 5 / James St. John</span>

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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) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40906253163.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40906253163_e043ebbdc3_m.jpg" alt="" /></a><br />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) 2 / James St. John</span>

サイズ変更など

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) 24
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/40911662323.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40911662323_97d34fdd91_m.jpg" alt="" /></a><br />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) 24 / James St. John</span>

サイズ変更など

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) 14
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47083500324.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47083500324_d80102c456_m.jpg" alt="" /></a><br />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) 14 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18602538014.html" target="_blank"><img src="http://farm1.static.flickr.com/469/18602538014_841c891ebd_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 9 / James St. John</span>

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Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 1
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21425749620.html" target="_blank"><img src="http://farm1.static.flickr.com/614/21425749620_28f1a1a182_m.jpg" alt="" /></a><br />Fault with fault breccia in interbedded metagraywacke-slate (Lake Vermilion Formation, Neoarchean, 2.695-2.722 Ga; Pike River Bridge outcrop, just north of Peyla, Minnesota, USA) 1 / James St. John</span>

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Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 33
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50526474258.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50526474258_59e37ac3c2_m.jpg" alt="" /></a><br />Fuchsitic quartzite (Elmers Rock Greenstone Belt, Archean, >2.54 Ga; Laramie Range, Wyoming, USA) 33 / James St. John</span>

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Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 44
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/18605026363.html" target="_blank"><img src="http://farm1.static.flickr.com/456/18605026363_5045a849c1_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 44 / James St. John</span>

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) 49
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19037950918.html" target="_blank"><img src="http://farm1.static.flickr.com/317/19037950918_a6b8419dd6_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 49 / James St. John</span>

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) 18
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/19198822506.html" target="_blank"><img src="http://farm1.static.flickr.com/477/19198822506_c565304fd5_m.jpg" alt="" /></a><br />Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.722 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 18 / James St. John</span>

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Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22468933725.html" target="_blank"><img src="http://farm1.static.flickr.com/611/22468933725_1d95c947a1_m.jpg" alt="" /></a><br />Dacitic lapilli metatuff (dacitic meta-lapillistone) (Neoarchean, ~2.7-2.72 Ga; vicinity of Soudan Mine, Soudan, Minnesota, USA) 4 / James St. John</span>

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