pyroxene

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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) 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

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>

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) 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>

サイズ変更など

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>

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) 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>

サイズ変更など

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>

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) 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>

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) 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>

サイズ変更など

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>

サイズ変更など

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>

サイズ変更など

Large anorthosite xenolith in ophitic ilmenite gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Keene Creek East Skyline Parkway roadcut, Duluth, 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/22039818790.html" target="_blank"><img src="http://farm1.static.flickr.com/598/22039818790_4bd0250380_m.jpg" alt="" /></a><br />Large anorthosite xenolith in ophitic ilmenite gabbro (anorthosite series, Duluth Complex, Mesoproterozoic, 1099 Ma; Keene Creek East Skyline Parkway roadcut, Duluth, Minnesota, USA) 1 / 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) 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>

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) 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>

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) 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>

サイズ変更など

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>

サイズ変更など

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>

サイズ変更など

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

Volcanic breccia (Upper Oligocene, 25 Ma; Narbona Pass Maar Volcano, near the summit of the Chuska Mountains, Navajo 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/50960740362.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50960740362_12e93b644a_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) 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) 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>

サイズ変更など

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>

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) 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>

サイズ変更など

Gabbro & diorite & granite dikes (Devonian; Hulls Cove, Mt. Desert Island, Maine, 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/50592164043.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50592164043_c396c084e9_m.jpg" alt="" /></a><br />Gabbro & diorite & granite dikes (Devonian; Hulls Cove, Mt. Desert Island, Maine, USA) 3 / 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) 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/50995062007.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50995062007_dd75a2521b_m.jpg" alt="" /></a><br />Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 6 / 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) 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/31876512117.html" target="_blank"><img src="http://farm8.static.flickr.com/7826/31876512117_55b9b5998f_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) 1 / James St. John</span>

サイズ変更など

Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, 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/48971900543.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48971900543_9b880c1853_m.jpg" alt="" /></a><br />Columnar-jointed orendite lamproite lava (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 17 / James St. John</span>

サイズ変更など

Brecciated ordinary chondrite (Ensisheim 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/54187423671.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/54187423671_c20695be98_m.jpg" alt="" /></a><br />Brecciated ordinary chondrite (Ensisheim Meteorite) 2 / 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) 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/39852808173.html" target="_blank"><img src="http://farm8.static.flickr.com/7876/39852808173_b2f575863d_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) 13 / 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) 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/45903096765.html" target="_blank"><img src="http://farm5.static.flickr.com/4895/45903096765_b319923ced_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) 18 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/42006899811.html" target="_blank"><img src="http://farm1.static.flickr.com/978/42006899811_c06a6b449d_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 17 / James St. John</span>

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Pumiceous orendite lamproite (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, 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/48981367921.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48981367921_0ab7b665f9_m.jpg" alt="" /></a><br />Pumiceous orendite lamproite (Pleistocene, 1.30-1.37 Ma; Black Rock volcanic center, Leucite Hills, Wyoming, USA) 13 / James St. John</span>

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Actinolite xenolith & sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, 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/48343106166.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48343106166_d17cccbef4_m.jpg" alt="" /></a><br />Actinolite xenolith & sandorite lamprophyre (Sandor Dike, Neoarchean, 2.703 Ga; Route 17 roadcut northeast of Wasp Lake & north of Wawa, Ontario, Canada) 23 / 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) 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/45903213105.html" target="_blank"><img src="http://farm8.static.flickr.com/7899/45903213105_7d08f399b5_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) 21 / James St. John</span>

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Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 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/50420367721.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420367721_2a4cdf51ea_m.jpg" alt="" /></a><br />Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 1 / James St. John</span>

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Vesicular basalt (Upper Pleistocene, ~79 ka; lava flow from Amboy Crater, Mojave Desert, California, 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/50402791156.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50402791156_6c405ac4f3_m.jpg" alt="" /></a><br />Vesicular basalt (Upper Pleistocene, ~79 ka; lava flow from Amboy Crater, Mojave Desert, California, USA) 2 / James St. John</span>

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Dolerite ventifact (McMurdo Sound area, Antarctica) 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/32385301566.html" target="_blank"><img src="http://farm1.static.flickr.com/452/32385301566_aed7d9c344_m.jpg" alt="" /></a><br />Dolerite ventifact (McMurdo Sound area, Antarctica) 3 / James St. John</span>

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Diabase (Somerville, Massachusetts, 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/52152789159.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52152789159_d3ea61689e_m.jpg" alt="" /></a><br />Diabase (Somerville, Massachusetts, USA) 2 / James St. John</span>

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Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 71
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/47782312252.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47782312252_ff55a43a04_m.jpg" alt="" /></a><br />Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.711-2.719 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 71 / 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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Anorthosite ("Blue Eyes Granite") (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Ten Mile Bay Quarry, Labrador, 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/48751946492.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48751946492_a6da96946e_m.jpg" alt="" /></a><br />Anorthosite ("Blue Eyes Granite") (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Ten Mile Bay Quarry, Labrador, Canada) 12 / James St. John</span>

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Folded metabentonite in silicate-rich marble (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 50
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49906275238.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49906275238_b9e2f19592_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) 50 / 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) 30
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46766616582.html" target="_blank"><img src="http://farm8.static.flickr.com/7801/46766616582_893d83bef9_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) 30 / 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) 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/39852812733.html" target="_blank"><img src="http://farm8.static.flickr.com/7864/39852812733_2dde1c1b95_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) 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) 57
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46916131915.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46916131915_7581d5676f_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) 57 / 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) 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/39852797463.html" target="_blank"><img src="http://farm5.static.flickr.com/4809/39852797463_b21b075ca1_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) 14 / 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) 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/46818034561.html" target="_blank"><img src="http://farm5.static.flickr.com/4843/46818034561_916afb90d7_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) 16 / James St. John</span>

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Phonolite (Early Eocene, 50-54 Ma; roadcut along Beaver Creek Road, Bearpaw 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/49057868258.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49057868258_6ecefa713f_m.jpg" alt="" /></a><br />Phonolite (Early Eocene, 50-54 Ma; roadcut along Beaver Creek Road, Bearpaw Mountains, Montana, USA) 1 / James St. John</span>

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Volcanic breccia (Upper Oligocene, 25 Ma; Narbona Pass Maar Volcano, near the summit of the Chuska Mountains, Navajo 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/50960635826.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50960635826_3685c1a681_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) 5 / James St. John</span>

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Gabbro (Duluth Complex, Mesoproterozoic, 1099 Ma; Rt. 1 roadcut between Heart Lake & Little Spring Lake, Minnesota, USA) 9
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/21452827065.html" target="_blank"><img src="http://farm1.static.flickr.com/714/21452827065_52d8ff68da_m.jpg" alt="" /></a><br />Gabbro (Duluth Complex, Mesoproterozoic, 1099 Ma; Rt. 1 roadcut between Heart Lake & Little Spring Lake, Minnesota, USA) 9 / James St. John</span>

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Wyomingite (Lower Pleistocene, 0.95 Ma; quarry on volcanic cone on Zirkel Mesa, Leucite Hills Volcanic Province, Wyoming, 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/49992800827.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49992800827_77a189c6e2_m.jpg" alt="" /></a><br />Wyomingite (Lower Pleistocene, 0.95 Ma; quarry on volcanic cone on Zirkel Mesa, Leucite Hills Volcanic Province, Wyoming, USA) 25 / James St. John</span>

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Anorthosite mixed with minor nelsonite (Poe Mountain Anorthosite, Mesoproterozoic, 1.431-1.436 Ga; Sybille Canyon, Laramie Range, 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/48679786033.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48679786033_347071a295_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) 1 / James St. John</span>

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