pyroxene

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Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46092941824.html" target="_blank"><img src="http://farm5.static.flickr.com/4817/46092941824_814f712c77_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 6 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/41285563764.html" target="_blank"><img src="http://farm1.static.flickr.com/826/41285563764_33487265d6_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 7 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/47728199861.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47728199861_b7de453e38_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 20 / James St. John</span>

サイズ変更など

Ordinary chondrite (New Concord 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/52896313136.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52896313136_df73587058_m.jpg" alt="" /></a><br />Ordinary chondrite (New Concord Meteorite) 13 / James St. John</span>

サイズ変更など

Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, 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/22261757415.html" target="_blank"><img src="http://farm1.static.flickr.com/576/22261757415_80955bacbd_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) 29 / James St. John</span>

サイズ変更など

Labradorite plagioclase feldspar (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Nain, Labrador, 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/52672769132.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52672769132_103697dfce_m.jpg" alt="" /></a><br />Labradorite plagioclase feldspar (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Nain, Labrador, Canada) 2 / James St. John</span>

サイズ変更など

Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/33850661138.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33850661138_05cdb2caa8_m.jpg" alt="" /></a><br />Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 12 / James St. John</span>

サイズ変更など

Volga Blue Granite (anorthosite) (Volodarsk-Volhynsky Intrusion, Korosten Complex, Paleoproterozoic, 1.758-1.760 Ga; Zhitomir Province, Ukraine) 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/33882334452.html" target="_blank"><img src="http://farm3.static.flickr.com/2818/33882334452_8efd894aca_m.jpg" alt="" /></a><br />Volga Blue Granite (anorthosite) (Volodarsk-Volhynsky Intrusion, Korosten Complex, Paleoproterozoic, 1.758-1.760 Ga; Zhitomir Province, Ukraine) 7 / James St. John</span>

サイズ変更など

Folded metabentonite in silicate-rich marble (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 51
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/49906789186.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49906789186_4269f676cd_m.jpg" alt="" /></a><br />Folded metabentonite in silicate-rich marble (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 51 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46817937031.html" target="_blank"><img src="http://farm8.static.flickr.com/7905/46817937031_603eae581a_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 5 / James St. John</span>

サイズ変更など

Pink jadeitite Chinese incense burner (Qing period, 1644-1911) 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/49167301011.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49167301011_52004c8bdc_m.jpg" alt="" /></a><br />Pink jadeitite Chinese incense burner (Qing period, 1644-1911) 2 / James St. John</span>

サイズ変更など

Sandstone-phonolite intrusive contact (Buck Ranch, Highwood 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/49060639223.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49060639223_d3b643c378_m.jpg" alt="" /></a><br />Sandstone-phonolite intrusive contact (Buck Ranch, Highwood Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 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/50420371271.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420371271_c7554690d3_m.jpg" alt="" /></a><br />Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 5 / James St. John</span>

サイズ変更など

Reverse fault in inch-scale layered plagioclase feldspar & pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, 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/52377923209.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52377923209_d775002f0f_m.jpg" alt="" /></a><br />Reverse fault in inch-scale layered plagioclase feldspar & pyroxene (Stillwater Complex, Neoarchean, 2.71 Ga; near the Stillwater Mine, Beartooth Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Re-exhumed sub-fossil trees (died late 1700s) (Sandy River, Oxbow Park, Oregon, 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/38765185752.html" target="_blank"><img src="http://farm5.static.flickr.com/4568/38765185752_7a071e64d5_m.jpg" alt="" /></a><br />Re-exhumed sub-fossil trees (died late 1700s) (Sandy River, Oxbow Park, Oregon, USA) 2 / James St. John</span>

サイズ変更など

Mount Scott Volcano (Crater Lake National Park, Oregon, 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/28156752728.html" target="_blank"><img src="http://farm1.static.flickr.com/967/28156752728_8e243c1b2f_m.jpg" alt="" /></a><br />Mount Scott Volcano (Crater Lake National Park, Oregon, USA) 3 / James St. John</span>

サイズ変更など

Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, 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/49600016373.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49600016373_978cd1576c_m.jpg" alt="" /></a><br />Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 1 / James St. John</span>

サイズ変更など

Anorthosite mixed with minor nelsonite (Poe Mountain Anorthosite, Mesoproterozoic, 1.431-1.436 Ga; Sybille Canyon, Laramie Range, 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/48680126571.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48680126571_6f280fce66_m.jpg" alt="" /></a><br />Anorthosite mixed with minor nelsonite (Poe Mountain Anorthosite, Mesoproterozoic, 1.431-1.436 Ga; Sybille Canyon, Laramie Range, Wyoming, USA) 2 / 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) 43
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/47042910424.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47042910424_9505bfafe0_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) 43 / James St. John</span>

サイズ変更など

Spinifex metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; south-southwest of 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/46980831685.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46980831685_c2fb662a0f_m.jpg" alt="" /></a><br />Spinifex metakomatiite (serpentinized) (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.717 Ga; south-southwest of the Potter Mine, east of Timmins, Ontario, Canada) 5 / James St. John</span>

サイズ変更など

Mount Scott Volcano (Crater Lake National Park, Oregon, 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/40222339850.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40222339850_bdec018e3b_m.jpg" alt="" /></a><br />Mount Scott Volcano (Crater Lake National Park, Oregon, USA) 1 / James St. John</span>

サイズ変更など

Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, 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/50994950366.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50994950366_9d442b4bfe_m.jpg" alt="" /></a><br />Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 3 / 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) 59
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/40868505833.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40868505833_04a9b7e40e_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) 59 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, 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/45903174385.html" target="_blank"><img src="http://farm8.static.flickr.com/7829/45903174385_183cf967f7_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 9 / James St. John</span>

サイズ変更など

Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, 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/49600783077.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49600783077_75ebe82e27_m.jpg" alt="" /></a><br />Native copper pods in garnet-pyroxene skarn (Madison Gold Skarn Deposit, Late Cretaceous, 80 Ma; west of Silver Star, Montana, USA) 3 / James St. John</span>

サイズ変更など

Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, 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/22073774290.html" target="_blank"><img src="http://farm6.static.flickr.com/5775/22073774290_ca9b47979e_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) 24 / James St. John</span>

サイズ変更など

Gabbroic anorthosite to anorthositic gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Merritt Creek West Skyline Parkway roadcut, Duluth, Minnesota, 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/22261849435.html" target="_blank"><img src="http://farm6.static.flickr.com/5776/22261849435_d3601bc52a_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) 21 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46765727362.html" target="_blank"><img src="http://farm5.static.flickr.com/4895/46765727362_5867f40d72_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 23 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, 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/32942386918.html" target="_blank"><img src="http://farm5.static.flickr.com/4855/32942386918_6fbe947f5b_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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) 56
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/47835192841.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47835192841_6708829523_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) 56 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/31877675357.html" target="_blank"><img src="http://farm5.static.flickr.com/4896/31877675357_8f8ef352f5_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 28 / James St. John</span>

サイズ変更など

Ordinary chondrite (Pricetown Meteorite) 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/52323314780.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52323314780_bd312c30d6_m.jpg" alt="" /></a><br />Ordinary chondrite (Pricetown Meteorite) 2 / James St. John</span>

サイズ変更など

Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, 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/50994949841.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50994949841_271e24e2ee_m.jpg" alt="" /></a><br />Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 4 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (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/39852720513.html" target="_blank"><img src="http://farm8.static.flickr.com/7827/39852720513_ab6c76f1ee_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 2 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/28178596698.html" target="_blank"><img src="http://farm1.static.flickr.com/827/28178596698_0f0e7b181f_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 29 / James St. John</span>

サイズ変更など

Gabbro (Duluth Complex, Mesoproterozoic, 1099 Ma; Rt. 1 roadcut between Heart Lake & Little Spring Lake, 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/21264789300.html" target="_blank"><img src="http://farm1.static.flickr.com/597/21264789300_bb075f8d28_m.jpg" alt="" /></a><br />Gabbro (Duluth Complex, Mesoproterozoic, 1099 Ma; Rt. 1 roadcut between Heart Lake & Little Spring Lake, Minnesota, USA) 8 / James St. John</span>

サイズ変更など

Volcanic breccia (Upper Oligocene, 25 Ma; Narbona Pass Maar Volcano, near the summit of the Chuska Mountains, Navajo Volcanic Field, New Mexico, 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/51020849818.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51020849818_9ffbc65369_m.jpg" alt="" /></a><br />Volcanic breccia (Upper Oligocene, 25 Ma; Narbona Pass Maar Volcano, near the summit of the Chuska Mountains, Navajo Volcanic Field, New Mexico, USA) 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) 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/40761624923.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40761624923_ce9474fc63_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 22 / James St. John</span>

サイズ変更など

Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, 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/50994250938.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50994250938_0dd6e5c47d_m.jpg" alt="" /></a><br />Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 5 / James St. John</span>

サイズ変更など

Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, 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/51685637270.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51685637270_b5967d1c8e_m.jpg" alt="" /></a><br />Basalt (Newark Supergroup, Lower Jurassic; Somerset County, New Jersey, USA) 2 / James St. John</span>

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Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, 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/46818071421.html" target="_blank"><img src="http://farm8.static.flickr.com/7839/46818071421_4fc844fa1f_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 11 / 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) 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/32933857228.html" target="_blank"><img src="http://farm8.static.flickr.com/7914/32933857228_f6788365b8_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 7 / 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) 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/21639094544.html" target="_blank"><img src="http://farm1.static.flickr.com/667/21639094544_c183ec5696_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) 23 / James St. John</span>

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Porphyritic basaltic andesite (juvenile lava from a 14 June 2006 pyroclastic flow from Mt. Merapi, ~1200 m elevation at Bebeng, Java, Indonesia) 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/50820293742.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50820293742_9109ec28dd_m.jpg" alt="" /></a><br />Porphyritic basaltic andesite (juvenile lava from a 14 June 2006 pyroclastic flow from Mt. Merapi, ~1200 m elevation at Bebeng, Java, Indonesia) 4 / 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) 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/22235713186.html" target="_blank"><img src="http://farm1.static.flickr.com/600/22235713186_da321b73b5_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) 27 / James St. John</span>

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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) 53
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/40868585163.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40868585163_b1f1d81d01_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) 53 / James St. John</span>

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Pilot Butte (Pliocene madupite lamproite volcanic center in the Leucite Hills, Wyoming, 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/48927036128.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48927036128_2bd8c6bd5e_m.jpg" alt="" /></a><br />Pilot Butte (Pliocene madupite lamproite volcanic center in the Leucite Hills, Wyoming, USA) 1 / James St. John</span>

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Orendite lamproite (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, 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/48980856223.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48980856223_064b23379e_m.jpg" alt="" /></a><br />Orendite lamproite (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 10 / James St. John</span>

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Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, 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/45079478214.html" target="_blank"><img src="http://farm5.static.flickr.com/4841/45079478214_1eec7acf46_m.jpg" alt="" /></a><br />Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, USA) 16 / James St. John</span>

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Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46818010941.html" target="_blank"><img src="http://farm8.static.flickr.com/7862/46818010941_262c62e886_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 19 / James St. John</span>

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Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, 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/46092909084.html" target="_blank"><img src="http://farm5.static.flickr.com/4828/46092909084_d77393b8e7_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 3 / James St. John</span>

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Olivine diabase (Silver Creek Cliff Sill, Proterozoic; Silver Creek Cliff, northeastern 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/22841110277.html" target="_blank"><img src="http://farm6.static.flickr.com/5772/22841110277_91d4a0c765_m.jpg" alt="" /></a><br />Olivine diabase (Silver Creek Cliff Sill, Proterozoic; Silver Creek Cliff, northeastern Minnesota, USA) 5 / James St. John</span>

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Llao Rock (Crater Lake Caldera, Oregon, 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/41107058475.html" target="_blank"><img src="http://farm1.static.flickr.com/906/41107058475_3b7ce658f0_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 12 / James St. John</span>

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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) 59
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/47832363861.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47832363861_3d67ff466e_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) 59 / 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) 54
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/47783133982.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47783133982_4df74808d5_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) 54 / James St. John</span>

サイズ変更など

Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/32943306258.html" target="_blank"><img src="http://farm5.static.flickr.com/4803/32943306258_4c32137f21_m.jpg" alt="" /></a><br />Columnar-jointed rhyolitic obsidian lava flow (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 29 / James St. John</span>

サイズ変更など

Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, 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/45754252262.html" target="_blank"><img src="http://farm5.static.flickr.com/4896/45754252262_f62c814600_m.jpg" alt="" /></a><br />Peridotite mantle xenoliths in phonotephrite (Peridot Mesa Flow, Middle Pleistocene, 580 ka; Peridot Mesa, San Carlos Volcanic Field, Arizona, USA) 20 / James St. John</span>

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Anorthosite ("Blue Eyes Granite") (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Ten Mile Bay Quarry, Labrador, Canada) 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/48751946687.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48751946687_eaefe6b9dd_m.jpg" alt="" /></a><br />Anorthosite ("Blue Eyes Granite") (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Ten Mile Bay Quarry, Labrador, Canada) 13 / 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) 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/22074125008.html" target="_blank"><img src="http://farm6.static.flickr.com/5810/22074125008_b7e3aa2acc_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) 19 / James St. John</span>

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Mount Hood Volcano (Cascade Range, Oregon, 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/53221872864.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53221872864_810deb8554_m.jpg" alt="" /></a><br />Mount Hood Volcano (Cascade Range, Oregon, USA) 1 / James St. John</span>

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