metamorphism

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Iguana Green Granite (gneiss) (quarry near Messias Targino, Rio Grande do Norte, Brazil) 5
by James St. John

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/33163437274.html" target="_blank"><img src="http://farm3.static.flickr.com/2893/33163437274_d9b5f2b166_m.jpg" alt="" /></a><br />Iguana Green Granite (gneiss) (quarry near Messias Targino, Rio Grande do Norte, Brazil) 5 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 36
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/33851687888.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33851687888_5b567e1957_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 36 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, 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/47727819761.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47727819761_30aca14fd2_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 6 / James St. John</span>

サイズ変更など

Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, 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/50448573072.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50448573072_1a6ca60c92_m.jpg" alt="" /></a><br />Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, Montana, USA) 5 / James St. John</span>

サイズ変更など

Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, 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/23143509460.html" target="_blank"><img src="http://farm1.static.flickr.com/733/23143509460_dcb66e477a_m.jpg" alt="" /></a><br />Biwabik Iron-Formation (Paleoproterozoic, ~1.878 Ga; Rouchleau Pit, Virginia, Minnesota, USA) 4 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Glen Mine, Chisholm, Minnesota, USA)
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/23231618789.html" target="_blank"><img src="http://farm6.static.flickr.com/5698/23231618789_8ac7d65340_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Glen Mine, Chisholm, Minnesota, USA) / James St. John</span>

サイズ変更など

Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 38
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/47728866801.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47728866801_ca9aca7a16_m.jpg" alt="" /></a><br />Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 38 / James St. John</span>

サイズ変更など

Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, 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/49908508553.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49908508553_6960fb88d8_m.jpg" alt="" /></a><br />Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 3 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hull-Rust-Mahoning Mine, Hibbing, 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/23063367174.html" target="_blank"><img src="http://farm1.static.flickr.com/672/23063367174_992da17825_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hull-Rust-Mahoning Mine, Hibbing, Minnesota, USA) 3 / 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) 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/47819995782.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47819995782_cda5c3c480_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) 1 / James St. John</span>

サイズ変更など

Ordinary chondrite (New Concord Meteorite) 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/32590097997.html" target="_blank"><img src="http://farm8.static.flickr.com/7827/32590097997_eb7e438c37_m.jpg" alt="" /></a><br />Ordinary chondrite (New Concord Meteorite) 4 / James St. John</span>

サイズ変更など

Masi Quartzite (fuchsitic quartzite) (Silurian; Gaskabeivarri, Norway) 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/33617770360.html" target="_blank"><img src="http://farm3.static.flickr.com/2939/33617770360_a6bd7af80d_m.jpg" alt="" /></a><br />Masi Quartzite (fuchsitic quartzite) (Silurian; Gaskabeivarri, Norway) 1 / James St. John</span>

サイズ変更など

Bastite (apparently) (Neoarchean; Red Lodge Chromite District, Beartooth Mountains, Montana, 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/52574742501.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52574742501_852f895e2b_m.jpg" alt="" /></a><br />Bastite (apparently) (Neoarchean; Red Lodge Chromite District, Beartooth Mountains, Montana, USA) 9 / James St. John</span>

サイズ変更など

Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, 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/50447698128.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50447698128_ccbfd96d63_m.jpg" alt="" /></a><br />Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, 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) 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/50303267042.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303267042_789054b89c_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 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) 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/18780820012.html" target="_blank"><img src="http://farm1.static.flickr.com/307/18780820012_b933ae5136_m.jpg" alt="" /></a><br />Baraboo Quartzite (upper Paleoproterozoic, ~1.7 Ga; just north of Rock Springs, Wisconsin, USA) 1 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/46811708115.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46811708115_cf35861ffa_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 29 / 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) 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/18163183964.html" target="_blank"><img src="http://farm1.static.flickr.com/291/18163183964_962e8c5aaf_m.jpg" alt="" /></a><br />Baraboo Quartzite (upper Paleoproterozoic, ~1.7 Ga; just north of Rock Springs, Wisconsin, USA) 5 / James St. John</span>

サイズ変更など

Banded iron formation (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Mesabi Iron Range, northeastern 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/23213499700.html" target="_blank"><img src="http://farm6.static.flickr.com/5810/23213499700_56fd94b041_m.jpg" alt="" /></a><br />Banded iron formation (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Mesabi Iron Range, northeastern Minnesota, USA) 1 / James St. John</span>

サイズ変更など

Lazuritic-pyritic marble (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 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/54367804666.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/54367804666_52b9745c36_m.jpg" alt="" /></a><br />Lazuritic-pyritic marble (Sar-e-Sang Deposit, Sakhi Formation, Precambrian, 2.4-2.7 Ga (?); Sar-e-Sang Mining District, Hindu-Kush Mountains, Afghanistan) 8 / James St. John</span>

サイズ変更など

Grand Canyon of the Yellowstone River (Yellowstone, Wyoming, USA) 250
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/53024210273.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53024210273_6b0bf43751_m.jpg" alt="" /></a><br />Grand Canyon of the Yellowstone River (Yellowstone, Wyoming, USA) 250 / James St. John</span>

サイズ変更など

Meta-iron formation (Archean; Quad Creek section - Beartooth Highway roadcut, Beartooth Mountains, Montana, 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/52614144397.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52614144397_69b4151b66_m.jpg" alt="" /></a><br />Meta-iron formation (Archean; Quad Creek section - Beartooth Highway roadcut, Beartooth Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Otter Creek & gravel bar of Baraboo Quartzite clasts (Baxter Hollow, South Range of the Baraboo Ranges, Wisconsin, 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/18848739051.html" target="_blank"><img src="http://farm4.static.flickr.com/3856/18848739051_f9db79c5fc_m.jpg" alt="" /></a><br />Otter Creek & gravel bar of Baraboo Quartzite clasts (Baxter Hollow, South Range of the Baraboo Ranges, Wisconsin, USA) 1 / 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) 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/34505674252.html" target="_blank"><img src="http://farm5.static.flickr.com/4175/34505674252_6cfb112359_m.jpg" alt="" /></a><br />Goethite-hematite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Embarass Mine, Mesabi Iron Range, Minnesota, USA) 5 / James St. John</span>

サイズ変更など

Anorthosite (Ankafotia Anorthosite Massif, Neoproterozoic, ~660 Ma; Madagascar) 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/50421665987.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50421665987_97efd13c34_m.jpg" alt="" /></a><br />Anorthosite (Ankafotia Anorthosite Massif, Neoproterozoic, ~660 Ma; Madagascar) 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) 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/18199420334.html" target="_blank"><img src="http://farm4.static.flickr.com/3753/18199420334_eb7a8628bb_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) 13 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50303265047.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303265047_630950d939_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 6 / 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) 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/23690787855.html" target="_blank"><img src="http://farm6.static.flickr.com/5666/23690787855_70f3d24d5f_m.jpg" alt="" /></a><br />Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 35
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/23632338031.html" target="_blank"><img src="http://farm6.static.flickr.com/5809/23632338031_c329ff7415_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 35 / James St. John</span>

サイズ変更など

Serpentinite quarry (Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, 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/49655119303.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49655119303_f37c6ba1e1_m.jpg" alt="" /></a><br />Serpentinite quarry (Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 2 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65-1.70 Ga; Falls Park, Sioux Falls, South Dakota, USA) 90
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/52427075496.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52427075496_cdd6dab8bc_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65-1.70 Ga; Falls Park, Sioux Falls, South Dakota, USA) 90 / James St. John</span>

サイズ変更など

Metachert (Arkansas Novaculite, Devonian-Mississippian; ZigZag Mountains, Arkansas, USA) 35
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/51730880256.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51730880256_11a33c911b_m.jpg" alt="" /></a><br />Metachert (Arkansas Novaculite, Devonian-Mississippian; ZigZag Mountains, Arkansas, USA) 35 / James St. John</span>

サイズ変更など

Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 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/49948987701.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49948987701_d818dd1ef2_m.jpg" alt="" /></a><br />Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 2 / James St. John</span>

サイズ変更など

Gneiss with mafic enclaves (Archean; Norris South roadcut, Madison County, Montana, 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/44803636174.html" target="_blank"><img src="http://farm2.static.flickr.com/1939/44803636174_b1cac71263_m.jpg" alt="" /></a><br />Gneiss with mafic enclaves (Archean; Norris South roadcut, Madison County, Montana, USA) 1 / James St. John</span>

サイズ変更など

White calcitic marble (Yule Marble, Middle Miocene, 12 Ma; Marble, Gunnison County, Colorado, 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/49149675578.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49149675578_186fbcb8bb_m.jpg" alt="" /></a><br />White calcitic marble (Yule Marble, Middle Miocene, 12 Ma; Marble, Gunnison County, Colorado, USA) 3 / James St. John</span>

サイズ変更など

Pyrrhotite-sphalerite (Tertiary, ~34 Ma; Ward Mine, White Pine County, Nevada, 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/50677787228.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50677787228_a09fe74379_m.jpg" alt="" /></a><br />Pyrrhotite-sphalerite (Tertiary, ~34 Ma; Ward Mine, White Pine County, Nevada, USA) 2 / James St. John</span>

サイズ変更など

Spotted hornfels (Lambertsville area, New Jersey, 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/52739542416.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52739542416_0af2484b59_m.jpg" alt="" /></a><br />Spotted hornfels (Lambertsville area, New Jersey, USA) 7 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 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/23688850746.html" target="_blank"><img src="http://farm1.static.flickr.com/685/23688850746_ec58a493dc_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 27 / James St. John</span>

サイズ変更など

Serpentinite (Tillotson-Haystack Slice; near Hazens Notch, Orleans County, Vermont, 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/49664147961.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49664147961_7513f376fe_m.jpg" alt="" /></a><br />Serpentinite (Tillotson-Haystack Slice; near Hazens Notch, Orleans County, Vermont, USA) 1 / James St. John</span>

サイズ変更など

Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, 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/50448394396.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50448394396_efa69fb5c1_m.jpg" alt="" /></a><br />Soapstone (late Mesoproterozoic, 1.1-1.3 Ga; Regal Mine, Ruby Range, Montana, USA) 4 / James St. John</span>

サイズ変更など

Slate (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Thunderbird Mine, Mesabi Iron Range, 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/33824259464.html" target="_blank"><img src="http://farm5.static.flickr.com/4159/33824259464_88a033ab6e_m.jpg" alt="" /></a><br />Slate (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Thunderbird Mine, Mesabi Iron Range, Minnesota, 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) 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/51446877103.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51446877103_21fb712826_m.jpg" alt="" /></a><br />Shungite (Zaonezhskaya Formation, middle Paleoproterozoic, 1.98-2.09 Ga; Shun'ga River area, northwestern Russia) 17 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/47675235472.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47675235472_edba7f6bda_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 28 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, 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/47674747312.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47674747312_43fd54f3c1_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 5 / James St. John</span>

サイズ変更など

Sir James Mine (Eleanor Iron Range, 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/48069821991.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48069821991_433b80da8a_m.jpg" alt="" /></a><br />Sir James Mine (Eleanor Iron Range, Ontario, Canada) 1 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50302425908.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50302425908_9565f800d7_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 8 / James St. John</span>

サイズ変更など

Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut east of East Dover, Vermont, 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/49648681966.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49648681966_068bb3672d_m.jpg" alt="" /></a><br />Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut east of East Dover, Vermont, USA) 9 / 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) 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/23582290272.html" target="_blank"><img src="http://farm6.static.flickr.com/5630/23582290272_c1ff7bac9c_m.jpg" alt="" /></a><br />Hull-Rust-Mahoning Mine (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Hibbing, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Serpentinite 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/49656762438.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49656762438_6482b43b49_m.jpg" alt="" /></a><br />Serpentinite 11 / 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) 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/8281142933.html" target="_blank"><img src="http://farm9.static.flickr.com/8351/8281142933_eb6a338530_m.jpg" alt="" /></a><br />Ajibik Quartzite (Paleoproterozoic, 2.1-2.2 Ga; roadcut in the Ragged Hills, Upper Peninsula of Michigan, USA) 2 / James St. John</span>

サイズ変更など

Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, 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/23714886455.html" target="_blank"><img src="http://farm1.static.flickr.com/574/23714886455_187dce07b9_m.jpg" alt="" /></a><br />Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; roadcut in Chisholm, Minnesota, USA) 29 / James St. John</span>

サイズ変更など

Novaculite (metachert) (Arkansas Novaculite, Devonian to Mississippian; Arkansas, 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/50968300691.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50968300691_6003d642ae_m.jpg" alt="" /></a><br />Novaculite (metachert) (Arkansas Novaculite, Devonian to Mississippian; Arkansas, USA) 7 / James St. John</span>

サイズ変更など

Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut southwest of East Dover, Vermont, 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/49645235441.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49645235441_d31c390dd7_m.jpg" alt="" /></a><br />Serpentinite (East Dover Ultramafic Body, Ordovician; roadcut southwest of East Dover, Vermont, 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) 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/50303116771.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303116771_0a677e1337_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 4 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50303266872.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303266872_bd12d1c667_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 5 / James St. John</span>

サイズ変更など

Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, 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/50303264912.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50303264912_7cfa2b0d47_m.jpg" alt="" /></a><br />Sioux Quartzite (Paleoproterozoic, 1.65 to 1.70 Ga; Transcontinental Arch, USA) 1 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, 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/47727719301.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47727719301_448ebca3f5_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 1 / James St. John</span>

サイズ変更など

Weathered serpentinite (East Dover Ultramafic Body, Ordovician; Copperhead Road quarry, near East Dover, Vermont, 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/49648373863.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49648373863_aca2aa212a_m.jpg" alt="" /></a><br />Weathered serpentinite (East Dover Ultramafic Body, Ordovician; Copperhead Road quarry, near East Dover, Vermont, USA) 8 / James St. John</span>

サイズ変更など

Staurolite schist (Keivy Schist; Mt. Ploskaya, Kola Peninsula, Russia) 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/52741894518.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52741894518_c52cd9b343_m.jpg" alt="" /></a><br />Staurolite schist (Keivy Schist; Mt. Ploskaya, Kola Peninsula, Russia) 13 / James St. John</span>

サイズ変更など

Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 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/49653725748.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49653725748_c941df194c_m.jpg" alt="" /></a><br />Serpentinite (Paleozoic; Vermont Verde Antique International Quarry, northeast of Rochester, Vermont, USA) 14 / James St. John</span>

サイズ変更など

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