Rock showing layers of red jasper and iron magnetite formed billions of years ago. The iron banding was formed early in life's evolution when marine organisms began producing oxygen by photosynthesis. The oxygen caused iron to precipitate out of the oceans as iron oxide minerals. From the American Museum of Natural History, New York.
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Creative#:
TOP22084763
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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