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Aphanitic phonolite (Bluebird Dike, Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49223229946.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49223229946_9d8c4b674c_m.jpg" alt="" /></a><br />Aphanitic phonolite (Bluebird Dike, Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 12 / James St. John</span>

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/46977676415.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46977676415_065cc5c0f3_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 11 / 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) 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>

サイズ変更など

Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 52
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/36866113674.html" target="_blank"><img src="http://farm5.static.flickr.com/4467/36866113674_034a8c98dd_m.jpg" alt="" /></a><br />Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 52 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49235616851.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235616851_b3986c2ddf_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 21 / James St. John</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, 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/22688152964.html" target="_blank"><img src="http://farm6.static.flickr.com/5815/22688152964_7f60f65fee_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 1 / 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) 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/21454296555.html" target="_blank"><img src="http://farm1.static.flickr.com/697/21454296555_cd8fd08606_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 15 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 23
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/49235614291.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235614291_7e0b842473_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 23 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49233854283.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49233854283_ee5a8ec527_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 7 / James St. John</span>

サイズ変更など

Aphanitic phonolite (Bluebird Dike, Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49223455652.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49223455652_bcc9c6c3e6_m.jpg" alt="" /></a><br />Aphanitic phonolite (Bluebird Dike, Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 11 / James St. John</span>

サイズ変更など

Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern 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/22689385673.html" target="_blank"><img src="http://farm6.static.flickr.com/5685/22689385673_b6f73262d9_m.jpg" alt="" /></a><br />Olivine diabase (Lafayette Bluff Sill, Proterozoic; Lafayette Bluff Tunnel, northeastern Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Snowflake obsidian 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/52825267772.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52825267772_5ce567cfcb_m.jpg" alt="" /></a><br />Snowflake obsidian 18 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 19
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/49235619046.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235619046_309d26da38_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 19 / 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) 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/47831535062.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47831535062_86a12f0c71_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) 7 / 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) 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/21454397395.html" target="_blank"><img src="http://farm1.static.flickr.com/725/21454397395_e1eae189e8_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 5 / 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) 23
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/47088626604.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47088626604_87dbaab424_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) 23 / James St. John</span>

サイズ変更など

Lassen Volcano (~29 ka dacitic volcanic dome) (Lassen Volcanic National Park, California, 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/36852459414.html" target="_blank"><img src="http://farm5.static.flickr.com/4478/36852459414_713d39cc34_m.jpg" alt="" /></a><br />Lassen Volcano (~29 ka dacitic volcanic dome) (Lassen Volcanic National Park, California, USA) 11 / James St. John</span>

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/46977691035.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46977691035_320c7bcea4_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 10 / 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) 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/21462644081.html" target="_blank"><img src="http://farm6.static.flickr.com/5804/21462644081_178bcbb942_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 8 / 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) 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/46912474475.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46912474475_216d639298_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) 14 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 16
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49235142098.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235142098_07bc99a364_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 16 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 25
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/49235611616.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235611616_1eed49e9a6_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 25 / James St. John</span>

サイズ変更など

Litli Hrútur eruption, Iceland (evening, 11 July 2023) 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/53039831441.html" target="_blank"><img src="http://farm0.static.flickr.com/0/53039831441_ac242476d3_m.jpg" alt="" /></a><br />Litli Hrútur eruption, Iceland (evening, 11 July 2023) 1 / James St. John</span>

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) 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/48296338597.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48296338597_b7417fa236_m.jpg" alt="" /></a><br />Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 8 / James St. John</span>

サイズ変更など

Agglutinated volcanic bomb in 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) 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/40896414343.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40896414343_4a842a133b_m.jpg" alt="" /></a><br />Agglutinated volcanic bomb in 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) 8 / James St. John</span>

サイズ変更など

Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 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/50875005392.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50875005392_bcd911dde4_m.jpg" alt="" /></a><br />Spherulitic magnetite (Rudnogorsk Deposit, Angara-Ilim Iron Ore District, Irkutsk Region, Siberia, Russia) 4 / James St. John</span>

サイズ変更など

Chaos Jumbles Landslide (upper Holocene; Lassen Volcano National Park, California, USA) 8
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/37615510781.html" target="_blank"><img src="http://farm5.static.flickr.com/4471/37615510781_ff6e12c0c1_m.jpg" alt="" /></a><br />Chaos Jumbles Landslide (upper Holocene; Lassen Volcano National Park, California, USA) 8 / James St. John</span>

サイズ変更など

Columnar-jointed komatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of 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/47893830031.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47893830031_0ba62cdff1_m.jpg" alt="" /></a><br />Columnar-jointed komatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 7 / James St. John</span>

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/40927224943.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40927224943_20e1ab2869_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 7 / James St. John</span>

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/40927190283.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40927190283_0d8f5c6ab0_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 1 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49235143273.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235143273_f8648cc1cc_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 27 / 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) 25
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/20831500314.html" target="_blank"><img src="http://farm1.static.flickr.com/678/20831500314_8e195a3591_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 25 / James St. John</span>

サイズ変更など

Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 20
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49235617936.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49235617936_d2e234ed48_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 20 / James St. John</span>

サイズ変更など

Lassen Volcano & Brokeoff Mountain (Lassen Volcanic National Park, California, 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/37511504986.html" target="_blank"><img src="http://farm5.static.flickr.com/4491/37511504986_98d99443ef_m.jpg" alt="" /></a><br />Lassen Volcano & Brokeoff Mountain (Lassen Volcanic National Park, California, USA) / James St. John</span>

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 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/46959105055.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46959105055_b792a5a400_m.jpg" alt="" /></a><br />Sulfidic argillite & 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

Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, 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/21266539838.html" target="_blank"><img src="http://farm1.static.flickr.com/748/21266539838_ce00df534b_m.jpg" alt="" /></a><br />Metamorphosed pillow basalt (Ely Greenstone, Neoarchean, ~2.722 Ga; large glacial erratic along Main Street, Ely, Minnesota, USA) 7 / James St. John</span>

サイズ変更など

Obsidian 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/49056411793.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49056411793_362a20fa1c_m.jpg" alt="" /></a><br />Obsidian 22 / James St. John</span>

サイズ変更など

Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/47104399434.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47104399434_8bd6f8f4f4_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 9 / James St. John</span>

サイズ変更など

Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at 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/47875368741.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47875368741_b9cda919d1_m.jpg" alt="" /></a><br />Sulfidic argillite (Middle Tholeiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711 to 2.719 Ga; drill core at the Potter Mine, east of Timmins, Ontario, Canada) 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 core at 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/33995473768.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33995473768_ffd4a8d4ed_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) 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; 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>

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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) 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/47883494151.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47883494151_a6da477472_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) 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 core at 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/47826066132.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47826066132_504d3686a5_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) 33 / James St. John</span>

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Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, 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/22249113592.html" target="_blank"><img src="http://farm6.static.flickr.com/5646/22249113592_54a4d397ba_m.jpg" alt="" /></a><br />Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, USA) 12 / James St. John</span>

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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) 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/46967390585.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46967390585_f0c886d3d9_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) 8 / 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 core at the Potter Mine, east of Timmins, Ontario, Canada) 32
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/34001038068.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/34001038068_00bb1b729b_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) 32 / 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 core at the Potter Mine, east of Timmins, 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/47088778904.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47088778904_675eafccbb_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) 34 / James St. John</span>

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Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/45893662945.html" target="_blank"><img src="http://farm8.static.flickr.com/7865/45893662945_c556d58b1c_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 2 / James St. John</span>

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Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 58
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/37576671851.html" target="_blank"><img src="http://farm5.static.flickr.com/4513/37576671851_e3aab266cf_m.jpg" alt="" /></a><br />Black porphyritic dacite (upper Holocene, 14 May 1915; Devastated Area, Lassen Volcano National Park, California, USA) 58 / James St. John</span>

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Chaos Jumbles Landslide (upper Holocene; Lassen Volcano National Park, California, 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/37615575671.html" target="_blank"><img src="http://farm5.static.flickr.com/4460/37615575671_b3d3666fa9_m.jpg" alt="" /></a><br />Chaos Jumbles Landslide (upper Holocene; Lassen Volcano National Park, California, USA) 4 / James St. John</span>

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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) 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/47791243922.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47791243922_142764aba7_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) 35 / James St. John</span>

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Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 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/47893658451.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47893658451_5e16a437c9_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 4 / James St. John</span>

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Dome C and Dome E of Chaos Crags volcanic domes & Chaos Jumbles Landslide (Holocene; Lassen Volcano National Park, California, 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/36897016214.html" target="_blank"><img src="http://farm5.static.flickr.com/4481/36897016214_4df6341d89_m.jpg" alt="" /></a><br />Dome C and Dome E of Chaos Crags volcanic domes & Chaos Jumbles Landslide (Holocene; Lassen Volcano National Park, California, USA) / James St. John</span>

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Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49229349262.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49229349262_009d6bab4a_m.jpg" alt="" /></a><br />Fluorite vein (Cripple Creek Diatreme, Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 2 / James St. John</span>

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Serpentinite (= cumulate metakomatiite) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of 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/47098484734.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47098484734_7bd1bee2c0_m.jpg" alt="" /></a><br />Serpentinite (= cumulate metakomatiite) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 1 / 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) 107
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/48312632797.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48312632797_23c8f8e5bb_m.jpg" alt="" /></a><br />Lamprophyre with xenoliths (Dubreuilville Dike, Archean; Route 17 roadcut southeast of Princess Lake & north of Wawa, Ontario, Canada) 107 / James St. John</span>

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Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 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/34951186016.html" target="_blank"><img src="http://farm5.static.flickr.com/4228/34951186016_80aa409b7f_m.jpg" alt="" /></a><br />Marinace Green Granite (polymict metaconglomerate) (Ouricuri do Ouro Formation, Mesoproterozoic, ~1.6-1.7 Ga; Bahia, Brazil) 6 / James St. John</span>

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Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of 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/47893612531.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47893612531_4878ab0016_m.jpg" alt="" /></a><br />Peridotite & serpentinite (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; southwest of the Potter Mine, east of Timmins, Ontario, Canada) 6 / James St. John</span>

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Metakomatiites (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near 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/33951425668.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33951425668_a513064088_m.jpg" alt="" /></a><br />Metakomatiites (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 2 / James St. John</span>

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Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, 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/49233871488.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49233871488_c37305d1e2_m.jpg" alt="" /></a><br />Cripple Creek Diatreme (Early Oligocene, 32 Ma; Cresson Pit, Cripple Creek Mining District, Colorado, USA) 11 / James St. John</span>

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