metamorphism

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Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, 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/49654224211.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49654224211_84879143cd_m.jpg" alt="" /></a><br />Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 3 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 22
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/50302426653.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50302426653_20869d1716_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 22 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 17
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/50302426318.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50302426318_f0a04b357a_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 17 / James St. John</span>

サイズ変更など

Goethite-hematite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Embarass Mine, Mesabi Iron Range, 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/33825144904.html" target="_blank"><img src="http://farm5.static.flickr.com/4193/33825144904_e900152729_m.jpg" alt="" /></a><br />Goethite-hematite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Embarass Mine, Mesabi Iron Range, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, 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/18816358345.html" target="_blank"><img src="http://farm1.static.flickr.com/353/18816358345_402f234f18_m.jpg" alt="" /></a><br />Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, USA) 4 / James St. John</span>

サイズ変更など

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 13
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/21338141190.html" target="_blank"><img src="http://farm1.static.flickr.com/780/21338141190_251cc0461c_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 13 / James St. John</span>

サイズ変更など

Chromitite (Neoarchean; North Star Mine, Red Lodge Chromite District, Beartooth Mountains, Montana, USA) 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/52477861453.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52477861453_97b20da091_m.jpg" alt="" /></a><br />Chromitite (Neoarchean; North Star Mine, Red Lodge Chromite District, Beartooth Mountains, Montana, USA) 6 / James St. John</span>

サイズ変更など

Shungite (Zaonezhskaya Formation, middle Paleoproterozoic, 1.98-2.09 Ga; Shun'ga River area, northwestern Russia) 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/48645398758.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48645398758_04e0724391_m.jpg" alt="" /></a><br />Shungite (Zaonezhskaya Formation, middle Paleoproterozoic, 1.98-2.09 Ga; Shun'ga River area, northwestern Russia) 3 / James St. John</span>

サイズ変更など

Gneiss (Precambrian; Mingus Mill roadcut, Great Smoky Mountains, North Carolina, 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/36301072344.html" target="_blank"><img src="http://farm5.static.flickr.com/4428/36301072344_77ace7e1f9_m.jpg" alt="" /></a><br />Gneiss (Precambrian; Mingus Mill roadcut, Great Smoky Mountains, North Carolina, USA) 4 / James St. John</span>

サイズ変更など

Shungite (Zaonezhskaya Formation, middle Paleoproterozoic, 1.98-2.09 Ga; Shun'ga River area, northwestern Russia) 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/48645753436.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48645753436_6e3d78b332_m.jpg" alt="" /></a><br />Shungite (Zaonezhskaya Formation, middle Paleoproterozoic, 1.98-2.09 Ga; Shun'ga River area, northwestern Russia) 1 / James St. John</span>

サイズ変更など

Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, Minnesota, USA) 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/23062675354.html" target="_blank"><img src="http://farm6.static.flickr.com/5674/23062675354_56fff89888_m.jpg" alt="" /></a><br />Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Cubic crystals of pyrite in metamarlstone (Navajun, Spain) 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/19124542312.html" target="_blank"><img src="http://farm1.static.flickr.com/258/19124542312_5c9b44bbf5_m.jpg" alt="" /></a><br />Cubic crystals of pyrite in metamarlstone (Navajun, Spain) 2 / James St. John</span>

サイズ変更など

Augen gneiss 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/50696740258.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50696740258_5c5ae0c4bc_m.jpg" alt="" /></a><br />Augen gneiss 6 / James St. John</span>

サイズ変更など

Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 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/48165768981.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48165768981_90f8cb0680_m.jpg" alt="" /></a><br />Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 5 / James St. John</span>

サイズ変更など

Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, Virginia, Minnesota, USA) 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/23143495120.html" target="_blank"><img src="http://farm6.static.flickr.com/5815/23143495120_1abc5e0759_m.jpg" alt="" /></a><br />Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, Virginia, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 28
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/23632394841.html" target="_blank"><img src="http://farm1.static.flickr.com/598/23632394841_4d65b6a402_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 28 / James St. John</span>

サイズ変更など

Goethite-hematite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Embarass Mine, Mesabi Iron Range, Minnesota, 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/33825113664.html" target="_blank"><img src="http://farm5.static.flickr.com/4186/33825113664_541ebd5e06_m.jpg" alt="" /></a><br />Goethite-hematite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Embarass Mine, Mesabi Iron Range, Minnesota, USA) 8 / James St. John</span>

サイズ変更など

Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, 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/23395162940.html" target="_blank"><img src="http://farm1.static.flickr.com/757/23395162940_1901cf2f21_m.jpg" alt="" /></a><br />Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 13
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/50438631623.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50438631623_52c22a96d9_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 13 / James St. John</span>

サイズ変更など

Gneiss (Precambrian; Mingus Mill roadcut, Great Smoky Mountains, North Carolina, 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/36739533560.html" target="_blank"><img src="http://farm5.static.flickr.com/4381/36739533560_4721060dd3_m.jpg" alt="" /></a><br />Gneiss (Precambrian; Mingus Mill roadcut, Great Smoky Mountains, North Carolina, USA) 2 / James St. John</span>

サイズ変更など

Ajibik Quartzite (Paleoproterozoic, 2.1-2.2 Ga; roadcut in the Ragged Hills, Upper Peninsula of Michigan, 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/8281142729.html" target="_blank"><img src="http://farm9.static.flickr.com/8338/8281142729_96a9d9055f_m.jpg" alt="" /></a><br />Ajibik Quartzite (Paleoproterozoic, 2.1-2.2 Ga; roadcut in the Ragged Hills, Upper Peninsula of Michigan, USA) 3 / James St. John</span>

サイズ変更など

Soapstone with manganese oxide dendrites (Mesoproterozoic, 1.1 to 1.3 Ga; near Ennis, Montana, 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/49146358378.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49146358378_ae54ffb1e3_m.jpg" alt="" /></a><br />Soapstone with manganese oxide dendrites (Mesoproterozoic, 1.1 to 1.3 Ga; near Ennis, Montana, USA) 2 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 21
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/50303265767.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303265767_f8e54592ef_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 21 / James St. John</span>

サイズ変更など

Lizardite serpentinite 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/19999006302.html" target="_blank"><img src="http://farm1.static.flickr.com/364/19999006302_d14732d878_m.jpg" alt="" /></a><br />Lizardite serpentinite 1 / James St. John</span>

サイズ変更など

Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 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/24831509964.html" target="_blank"><img src="http://farm2.static.flickr.com/1614/24831509964_3ff4615d73_m.jpg" alt="" /></a><br />Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 3 / James St. John</span>

サイズ変更など

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, 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/20905059343.html" target="_blank"><img src="http://farm6.static.flickr.com/5618/20905059343_3ca9848e67_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; Rt. 169 roadcut just east of Ely, Minnesota, USA) 12 / James St. John</span>

サイズ変更など

Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 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/48165816622.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48165816622_32cde35faf_m.jpg" alt="" /></a><br />Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 8 / James St. John</span>

サイズ変更など

Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 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/48165781107.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48165781107_f6b48bb221_m.jpg" alt="" /></a><br />Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 1 / James St. John</span>

サイズ変更など

Eroded dike
by Dietmar Down Under

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/23452773813.html" target="_blank"><img src="http://farm2.static.flickr.com/1641/23452773813_ee9e8e8626_m.jpg" alt="" /></a><br />Eroded dike / Dietmar Down Under</span>

サイズ変更など

Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, 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/18195739023.html" target="_blank"><img src="http://farm6.static.flickr.com/5581/18195739023_f4cc9f0dcb_m.jpg" alt="" /></a><br />Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, USA) 2 / James St. John</span>

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) 16
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/50859231558.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50859231558_fa16b28383_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) 16 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50303116276.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303116276_37ae7ed081_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 12 / James St. John</span>

サイズ変更など

Détails d'un métagabbro du Chenaillet (faciès schiste vert)
by ffigon

クリエイティブ・コモンズ表示-継承 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/17237738676.html" target="_blank"><img src="http://farm9.static.flickr.com/8735/17237738676_60b706077c_m.jpg" alt="" /></a><br />Détails d'un métagabbro du Chenaillet (faciès schiste vert) / ffigon</span>

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) 15
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/50859948771.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50859948771_c3c9a288d1_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) 15 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 15
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/50438631073.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50438631073_227454ca4f_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 15 / James St. John</span>

サイズ変更など

Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 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/25435937056.html" target="_blank"><img src="http://farm2.static.flickr.com/1720/25435937056_e93241122b_m.jpg" alt="" /></a><br />Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 2 / James St. John</span>

サイズ変更など

Baraboo Quartzite (upper Paleoproterozoic, ~1.7 Ga; just north of Rock Springs, Wisconsin, 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/18598083140.html" target="_blank"><img src="http://farm1.static.flickr.com/297/18598083140_fed99624f6_m.jpg" alt="" /></a><br />Baraboo Quartzite (upper Paleoproterozoic, ~1.7 Ga; just north of Rock Springs, Wisconsin, USA) 2 / James St. John</span>

サイズ変更など

Orinoco Granite (garnetiferous convoluted gneiss) 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/33857296822.html" target="_blank"><img src="http://farm4.static.flickr.com/3956/33857296822_0cca745ed6_m.jpg" alt="" /></a><br />Orinoco Granite (garnetiferous convoluted gneiss) 1 / 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) 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/40906358303.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40906358303_f1b5dfaff2_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) 9 / James St. John</span>

サイズ変更など

Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, 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/18629183450.html" target="_blank"><img src="http://farm1.static.flickr.com/302/18629183450_ec9c893b94_m.jpg" alt="" /></a><br />Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, USA) 10 / James St. John</span>

サイズ変更など

Ditto in Saitama, Saitama 2 (Omiya Park)
by Kasadera

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/10817701033.html" target="_blank"><img src="http://farm4.static.flickr.com/3797/10817701033_41b8fdd087_m.jpg" alt="" /></a><br />Ditto in Saitama, Saitama 2 (Omiya Park) / Kasadera</span>

サイズ変更など

Garnet schist 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/49072916926.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49072916926_de218b17a0_m.jpg" alt="" /></a><br />Garnet schist 4 / James St. John</span>

サイズ変更など

Hematite rock (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Thunderbird Mine, Mesabi Iron Range, 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/34281824200.html" target="_blank"><img src="http://farm5.static.flickr.com/4167/34281824200_074774d167_m.jpg" alt="" /></a><br />Hematite rock (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Thunderbird Mine, Mesabi Iron Range, Minnesota, USA) 2 / James St. John</span>

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Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50302427438.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50302427438_f234aa270e_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 7 / James St. John</span>

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Metachert (Arkansas Novaculite, Devonian-Mississippian; ZigZag Mountains, Arkansas, USA) 41
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/51731141098.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51731141098_63241073b9_m.jpg" alt="" /></a><br />Metachert (Arkansas Novaculite, Devonian-Mississippian; ZigZag Mountains, Arkansas, USA) 41 / James St. John</span>

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Siamo Slate (Paleoproterozoic, 2.1-2.2 Ga; roadcut near Mud Lake, Upper Peninsula of Michigan, 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/51187510864.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51187510864_9a64b7d899_m.jpg" alt="" /></a><br />Siamo Slate (Paleoproterozoic, 2.1-2.2 Ga; roadcut near Mud Lake, Upper Peninsula of Michigan, USA) 4 / James St. John</span>

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Folded magnetite-quartz meta-iron formation (Goldman Meadows Formation, Mesoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, Wyoming, 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/21173701826.html" target="_blank"><img src="http://farm1.static.flickr.com/692/21173701826_38720f26f1_m.jpg" alt="" /></a><br />Folded magnetite-quartz meta-iron formation (Goldman Meadows Formation, Mesoarchean, 2.87 Ga; Atlantic City Iron Mine, Wind River Range, Wyoming, USA) 3 / James St. John</span>

サイズ変更など

Coal (Menefee Formation, Upper Cretaceous; National King Coal Mine, Hay Gulch, Colorado, 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/23120686851.html" target="_blank"><img src="http://farm6.static.flickr.com/5734/23120686851_8bc581f1ec_m.jpg" alt="" /></a><br />Coal (Menefee Formation, Upper Cretaceous; National King Coal Mine, Hay Gulch, Colorado, USA) 2 / James St. John</span>

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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>

サイズ変更など

Garnetiferous blueschist (Ward Creek, Sonoma County, California, 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/50514274958.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50514274958_c5056d6b83_m.jpg" alt="" /></a><br />Garnetiferous blueschist (Ward Creek, Sonoma County, California, USA) 3 / James St. John</span>

サイズ変更など

Kyanitic eclogite (Arguvan District, Malatya Province, Turkey) 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/52763472771.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52763472771_b4d91288a3_m.jpg" alt="" /></a><br />Kyanitic eclogite (Arguvan District, Malatya Province, Turkey) 1 / James St. John</span>

サイズ変更など

Rodingite (Schistes Lustres Complex; Canari, Corsica) 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/53544229286.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53544229286_59b3604725_m.jpg" alt="" /></a><br />Rodingite (Schistes Lustres Complex; Canari, Corsica) 2 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/47728265751.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47728265751_5752c1748b_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 34 / James St. John</span>

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Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, 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/18790625676.html" target="_blank"><img src="http://farm6.static.flickr.com/5505/18790625676_0f66ff9651_m.jpg" alt="" /></a><br />Cross-bedding in quartzite (Baraboo Quartzite, upper Paleoproterozoic, ~1.7 Ga; Tumbled Rocks Trail, Devil's Lake State Park, Wisconsin, USA) 9 / James St. John</span>

サイズ変更など

Chromitite with serpentinite (Neoarchean; Red Lodge Chromite District, Beartooth Mountains, Montana, 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/52574995309.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52574995309_d1b9f40436_m.jpg" alt="" /></a><br />Chromitite with serpentinite (Neoarchean; Red Lodge Chromite District, Beartooth Mountains, Montana, USA) 3 / James St. John</span>

サイズ変更など

Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 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/48165856117.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48165856117_a2b9ddfb5c_m.jpg" alt="" /></a><br />Ordinary chondrite (NWA 070 Meteorite, Sahara Desert, Africa) 3 / James St. John</span>

サイズ変更など

Chromitite (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

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50433664671.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50433664671_89b0fd70d0_m.jpg" alt="" /></a><br />Chromitite (Stillwater Complex, Neoarchean, 2.71 Ga; Beartooth Mountains, Montana, USA) 6 / James St. John</span>

サイズ変更など

Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 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/49074556508.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49074556508_9b8470f184_m.jpg" alt="" /></a><br />Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Nordfjord area, Sogn og Fjordane County, Norway) 11 / James St. John</span>

サイズ変更など

Earthy hematite (Black Hills, South Dakota, USA) 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/52674052845.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52674052845_33f23c76ef_m.jpg" alt="" /></a><br />Earthy hematite (Black Hills, South Dakota, USA) 6 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, 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/40762161063.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40762161063_40d3278598_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 44 / James St. John</span>

サイズ変更など

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