Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 8 : 無料・フリー素材/写真
Gooseberry Falls - Main Falls (Middle Falls) (Gooseberry River, North Shore of Lake Superior, Minnesota, USA) 8 / 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 | (8 June 2015)The iced tea color of the water is due to the presence of tannins (= organic compounds derived from plants).The rocks are olivine tholeiite basalts (some are amygdaloidal) of the ~1.1 billion year old North Shore Volcanic Series. These basalts are flood lavas that filled up an ancient rift valley (= Lake Superior segment of the Mid-Continent Rift System), representing a tear in the ancient North American paleocontinent of Laurentia.Stratigraphy of rocks: Gooseberry River Basalts, Upper Southwest Sequence, North Shore Volcanic Group, upper Mesoproterozoic, 1097-1098 MaLocality: Gooseberry Falls - Main Falls (Middle Falls), Gooseberry River, a little inland from the North Shore of Lake Superior, northeastern Minnesota, USA |
撮影日 | 2015-06-08 13:58:12 |
撮影者 | James St. John |
撮影地 |