pyroxene

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Narrows Basalt (Lower Pleistocene, 1.5-1.6 Ma) (Narrows of the Yellowstone River, northeastern Yellowstone National Park, 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/19943514360.html" target="_blank"><img src="http://farm1.static.flickr.com/530/19943514360_28e96e45c0_m.jpg" alt="" /></a><br />Narrows Basalt (Lower Pleistocene, 1.5-1.6 Ma) (Narrows of the Yellowstone River, northeastern Yellowstone National Park, Wyoming, USA) 6 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 47
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46812131975.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46812131975_b76be059dc_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 47 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/41287527874.html" target="_blank"><img src="http://farm1.static.flickr.com/957/41287527874_f952496de6_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 16 / James St. John</span>

サイズ変更など

Porphyritic phonolite (Shonkin Sag Laccolith, Early Eocene, 50-53 Ma; Buck Ranch, Highwood Mountains, Montana, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/49060639443.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49060639443_9d200ac725_m.jpg" alt="" /></a><br />Porphyritic phonolite (Shonkin Sag Laccolith, Early Eocene, 50-53 Ma; Buck Ranch, Highwood Mountains, Montana, USA) 2 / James St. John</span>

サイズ変更など

Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 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/49948988291.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49948988291_5c5dee7954_m.jpg" alt="" /></a><br />Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 4 / 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) 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/31867582897.html" target="_blank"><img src="http://farm5.static.flickr.com/4868/31867582897_956b895b0d_m.jpg" alt="" /></a><br />Aphyric & partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 4 / James St. John</span>

サイズ変更など

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/46756627182.html" target="_blank"><img src="http://farm8.static.flickr.com/7806/46756627182_c171ffc421_m.jpg" alt="" /></a><br />Rhyolitic obsidian (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

Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, 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/23371271660.html" target="_blank"><img src="http://farm1.static.flickr.com/637/23371271660_b9b3b0d314_m.jpg" alt="" /></a><br />Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 19 / James St. John</span>

サイズ変更など

Diabase dike intruding the Ruggles Pegmatite (Ruggles Pegmatite Mine, New Hampshire, 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/8290563927.html" target="_blank"><img src="http://farm9.static.flickr.com/8498/8290563927_91e75149d3_m.jpg" alt="" /></a><br />Diabase dike intruding the Ruggles Pegmatite (Ruggles Pegmatite Mine, New Hampshire, USA) 3 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, 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/47675199322.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47675199322_20aa7bb2ff_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 32 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/41962656652.html" target="_blank"><img src="http://farm1.static.flickr.com/973/41962656652_f8a6ab9327_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 11 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 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/50438630878.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50438630878_52cb065df8_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 19 / 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) 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/21605083144.html" target="_blank"><img src="http://farm6.static.flickr.com/5619/21605083144_b710202e4c_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) 5 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (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/31867552197.html" target="_blank"><img src="http://farm8.static.flickr.com/7811/31867552197_b4f58e9b63_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 12 / James St. John</span>

サイズ変更など

Olivine basalt (Cedar Canyon, Iron County, Utah, 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/48680331556.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48680331556_1448d434e5_m.jpg" alt="" /></a><br />Olivine basalt (Cedar Canyon, Iron County, Utah, USA) 13 / James St. John</span>

サイズ変更など

Olivine basalt (Cedar Canyon, Iron County, Utah, 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/48680326971.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48680326971_33ec3a62c1_m.jpg" alt="" /></a><br />Olivine basalt (Cedar Canyon, Iron County, Utah, USA) 8 / James St. John</span>

サイズ変更など

Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 6
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23584587361.html" target="_blank"><img src="http://farm6.static.flickr.com/5816/23584587361_5943ecde63_m.jpg" alt="" /></a><br />Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 6 / James St. John</span>

サイズ変更など

Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, Minnesota, USA) 2
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23052487125.html" target="_blank"><img src="http://farm6.static.flickr.com/5698/23052487125_eccf1e1772_m.jpg" alt="" /></a><br />Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, Minnesota, USA) 2 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 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/50439328271.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50439328271_cba795646f_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 12 / James St. John</span>

サイズ変更など

Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.710-2.718 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 49
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/46915732985.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46915732985_7d577ea37a_m.jpg" alt="" /></a><br />Metakomatiite lava flow (Upper Komatiitic Unit, Kidd-Munro Assemblage, Neoarchean, 2.710-2.718 Ga; Pyke Hill, near the Potter Mine, east of Timmins, Ontario, Canada) 49 / 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) 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/22249062292.html" target="_blank"><img src="http://farm1.static.flickr.com/613/22249062292_cd5ce1f50b_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) 17 / 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) 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/47896901471.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47896901471_507fb61605_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) 8 / James St. John</span>

サイズ変更など

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22215055332.html" target="_blank"><img src="http://farm1.static.flickr.com/671/22215055332_8101f98f31_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) 3 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, 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/46805428071.html" target="_blank"><img src="http://farm8.static.flickr.com/7851/46805428071_278b42dcd8_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian (Roaring Mountain Member, Plateau Rhyolite, Upper Pleistocene, ~59 ka; Obsidian Cliff, Yellowstone, Wyoming, USA) 4 / 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) 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/50995062217.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50995062217_36d386540e_m.jpg" alt="" /></a><br />Vesicular andesite (Upper Pliocene, 1.9 Ma; Sierra Grande Shield Volcano, Raton-Clayton Volcanic Field, New Mexico, USA) 9 / James St. John</span>

サイズ変更など

Anorthosite (Laramie Anorthosite Complex, Mesoproterozoic, 1.43 Ga; Sybille Canyon, Laramie Range, Wyoming, USA) 3
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/50421013658.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50421013658_95e7bcacae_m.jpg" alt="" /></a><br />Anorthosite (Laramie Anorthosite Complex, Mesoproterozoic, 1.43 Ga; Sybille Canyon, Laramie Range, Wyoming, USA) 3 / James St. John</span>

サイズ変更など

Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 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/50420541947.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50420541947_9865937191_m.jpg" alt="" /></a><br />Anorthosite with labradorite (Wiborg Batholith, 1633 Ma; Kymi Province, Finland) 2 / James St. John</span>

サイズ変更など

Anorthosite (Ankafotia Anorthosite Massif, Neoproterozoic, ~660 Ma; Madagascar) 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/50421663082.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50421663082_18c5bb60c4_m.jpg" alt="" /></a><br />Anorthosite (Ankafotia Anorthosite Massif, Neoproterozoic, ~660 Ma; Madagascar) 11 / James St. John</span>

サイズ変更など

Calcite over stilbite (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/50820339127.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50820339127_06d7809b8e_m.jpg" alt="" /></a><br />Calcite over stilbite (Stillwater Mine, Beartooth Mountains, Montana, USA) 1 / James St. John</span>

サイズ変更など

Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/46811139435.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/46811139435_79dfaeea14_m.jpg" alt="" /></a><br />Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 16 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 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/50438628903.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50438628903_2105b67f11_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 7 / 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) 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/49600516366.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49600516366_797098e4c4_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) 8 / James St. John</span>

サイズ変更など

Troctolite (Laramie Anorthosite Complex, Mesoproterozoic; Sybille Pit, 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/51143555898.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51143555898_f5f0985e7b_m.jpg" alt="" /></a><br />Troctolite (Laramie Anorthosite Complex, Mesoproterozoic; Sybille Pit, Laramie Range, Wyoming, USA) 1 / James St. John</span>

サイズ変更など

Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 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/47674670232.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/47674670232_8143d2d7dd_m.jpg" alt="" /></a><br />Dike intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 15 / James St. John</span>

サイズ変更など

Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 4
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/23640988556.html" target="_blank"><img src="http://farm1.static.flickr.com/653/23640988556_dbf5fb2f48_m.jpg" alt="" /></a><br />Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 4 / James St. John</span>

サイズ変更など

Hornblende gabbro (Salem Neck, Massachusetts, 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/51631344702.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/51631344702_9baf913bff_m.jpg" alt="" /></a><br />Hornblende gabbro (Salem Neck, Massachusetts, USA) 1 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 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/50438628483.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50438628483_fbf6306c7d_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 10 / 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 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/40917047233.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/40917047233_f37ae8af2d_m.jpg" alt="" /></a><br />Sulfidic argillite & 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>

サイズ変更など

Labradorite plagioclase feldspar (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Nain, 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/52673267361.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/52673267361_8ff1a5a459_m.jpg" alt="" /></a><br />Labradorite plagioclase feldspar (Nain Anorthosite, Mesoproterozoic, 1.29-1.35 Ga; Nain, Labrador, Canada) 13 / James St. John</span>

サイズ変更など

Aphyric rhyolitic obsidian (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/45894540795.html" target="_blank"><img src="http://farm8.static.flickr.com/7873/45894540795_49a23281a6_m.jpg" alt="" /></a><br />Aphyric rhyolitic obsidian (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

Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 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/49948989046.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49948989046_7540f57c0c_m.jpg" alt="" /></a><br />Porphyritic metadolerite (Mynydd Preseli Dolerite Suite, Middle Ordovician; Preseli Hills, Wales, Britain) 3 / James St. John</span>

サイズ変更など

Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, 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/23038780714.html" target="_blank"><img src="http://farm1.static.flickr.com/656/23038780714_7257b957e4_m.jpg" alt="" /></a><br />Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 21 / James St. John</span>

サイズ変更など

Ordinary chondrite (Viñales Meteorite) 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/50439328201.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50439328201_39a68e3f8b_m.jpg" alt="" /></a><br />Ordinary chondrite (Viñales Meteorite) 11 / James St. John</span>

サイズ変更など

Metanorthosite (Marcy Anorthosite, Mesoproterozoic, 1155 Ma; Rt. 73 roadcut near Chapel Pond, Adirondack Mountains, New York State, 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/31217119540.html" target="_blank"><img src="http://farm1.static.flickr.com/109/31217119540_7149aa4816_m.jpg" alt="" /></a><br />Metanorthosite (Marcy Anorthosite, Mesoproterozoic, 1155 Ma; Rt. 73 roadcut near Chapel Pond, Adirondack Mountains, New York State, USA) 2 / James St. John</span>

サイズ変更など

Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 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/49908506378.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49908506378_8352dff2e3_m.jpg" alt="" /></a><br />Calc-silicate rocks & reaction rim with metabentonite (Gouverneur Marble, Mesoproterozoic, ~1.1 Ga; Route 11 roadcut southwest of Canton, New York State, USA) 4 / 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) 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/33949962528.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33949962528_15ecda8542_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) 16 / James St. John</span>

サイズ変更など

Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, 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/23038920954.html" target="_blank"><img src="http://farm6.static.flickr.com/5763/23038920954_6f1d34e151_m.jpg" alt="" /></a><br />Giants Range Batholith (Neoarchean, 2.674-2.682 Ga; Confusion Hill roadcut, just north of Virginia, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Anorthosite (Whiteface Anorthosite, Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, 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/49895589441.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/49895589441_63e5f2c897_m.jpg" alt="" /></a><br />Anorthosite (Whiteface Anorthosite, Mesoproterozoic, ~1155 Ma; mine at Tahawus/Sanford Lake, New York State, USA) 5 / James St. John</span>

サイズ変更など

Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Almenningen, Vestland, Norway) 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/53363683960.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53363683960_13b26d778e_m.jpg" alt="" /></a><br />Eclogite (Late Silurian to Early Devonian, ~400-423 Ma; Almenningen, Vestland, Norway) 10 / James St. John</span>

サイズ変更など

Olivine basalt (Cedar Canyon, Iron County, Utah, 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/48680332076.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/48680332076_097cef2361_m.jpg" alt="" /></a><br />Olivine basalt (Cedar Canyon, Iron County, Utah, USA) 16 / 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) 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/32884942657.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/32884942657_16f76dcd6d_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) 29 / James St. John</span>

サイズ変更など

Peridotite (Baja California, Mexico) 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/50574279927.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/50574279927_64547445dd_m.jpg" alt="" /></a><br />Peridotite (Baja California, Mexico) 1 / James St. John</span>

サイズ変更など

Mount Hood Volcano (Cascade Range, 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/53221487396.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/53221487396_ec0a55fc2d_m.jpg" alt="" /></a><br />Mount Hood Volcano (Cascade Range, Oregon, USA) 2 / James St. John</span>

サイズ変更など

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/22040941769.html" target="_blank"><img src="http://farm6.static.flickr.com/5694/22040941769_9d155ef1ef_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) 6 / James St. John</span>

サイズ変更など

Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, 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/23052476305.html" target="_blank"><img src="http://farm6.static.flickr.com/5760/23052476305_b39e07194c_m.jpg" alt="" /></a><br />Ophitic olivine diabase (Beaver River Diabase, Beaver Bay Complex, Mesoproterozoic, ~1096 Ma; Split Rock Lighthouse, Minnesota, USA) 3 / James St. John</span>

サイズ変更など

Partially devitrified rhyolitic obsidian with lithophysa (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/46757294322.html" target="_blank"><img src="http://farm5.static.flickr.com/4813/46757294322_08dc262772_m.jpg" alt="" /></a><br />Partially devitrified rhyolitic obsidian with lithophysa (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

Dolerite ventifact (Dry Valleys, Antarctica) 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/31610829443.html" target="_blank"><img src="http://farm1.static.flickr.com/351/31610829443_17a5f61d91_m.jpg" alt="" /></a><br />Dolerite ventifact (Dry Valleys, Antarctica) 2 / James St. John</span>

サイズ変更など

Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 41
by James St. John

クリエイティブ・コモンズ表示 2.1

<span style="font-size:10px;"><a href="http://www.igosso.net/flk/32785394757.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/32785394757_c787bbb339_m.jpg" alt="" /></a><br />Dikes intruding tillite (Nipissing Diabase & Gowganda Formation, Paleoproterozoic; Percival Lake roadcut, Ontario, Canada) 41 / James St. John</span>

サイズ変更など

Llao Rock (Crater Lake Caldera, Oregon, 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/28134409338.html" target="_blank"><img src="http://farm1.static.flickr.com/903/28134409338_7b2b3c378e_m.jpg" alt="" /></a><br />Llao Rock (Crater Lake Caldera, Oregon, USA) 15 / 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) 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/33951337548.html" target="_blank"><img src="http://farm66.static.flickr.com/65535/33951337548_3826838607_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) 22 / James St. John</span>

サイズ変更など

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