Agatized coral (Tertiary; Withlacoochee River, Georgia, USA) 11 : 無料・フリー素材/写真
Agatized coral (Tertiary; Withlacoochee River, Georgia, USA) 11 / 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 | Agatized coral from the Tertiary of Georgia, USA.Parts of Georgia and Florida are known for having geodized, agatized corals. The original coral skeletons were composed of aragonite (CaCO3, calcium carbonate), a polymorph of calcite. The fossil corals have since been silicified and geodized, resulting in chalcedony-lined cavities / vugs.Stratigraphy: supposedly from marine sedimentary rocks in the Hawthorn Group, TertiaryLocality: undisclosed / unrecorded site attributed to the Withlacoochee River, near the Georgia-Florida border, far-southern Georgia, USA -------------------------Info. at:www.apalachee-minerals.com/agatizedcoral1 |
| 撮影日 | 2015-09-05 14:46:46 |
| 撮影者 | James St. John |
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