Gold Venetian Granite (garnetiferous gneiss, Neoproterozoic to Cambrian, ~500-650 Ma; Nova Venecia, Espirito Santo State, Brazil) : 無料・フリー素材/写真
Gold Venetian Granite (garnetiferous gneiss, Neoproterozoic to Cambrian, ~500-650 Ma; Nova Venecia, Espirito Santo State, Brazil) / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Venetian Gold Granite - a late Neoproterozoic to Cambrian-aged garnetiferous gneiss from Brazil. It’s quarried at Nova Venecia, in Espirito Santo State, coastal southeastern Brazil. Metamorphism occurred at ~650-500 million years ago. It contains quartz, feldspar, mafic minerals, and very dark red garnets. -----------------Gneiss is a common high-grade, foliated metamorphic rock characterized by alternating bands of light- and dark-colored minerals. It forms by metamorphism of schists or felsic-to-intermediate intrusive igneous rocks (e.g., granite). |
| 撮影日 | 2014-08-02 20:21:52 |
| 撮影者 | James St. John |
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