Coral reef - Geochemistry, Ecosystems, Biodiversity

coral reef

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Minute quantities of metallic elements are present in solution in seawater and also occur in marine invertebrate skeletons, though not in the same proportions as in the surrounding water. Magnesium and strontium are the most frequently occurring trace elements in reef skeletons and are measured in parts per thousand, but barium, manganese, and iron are also present and can be measured in parts per million. In Pacific corals 2.17 parts per million of uranium have been found, in Florida coral 2.36–2.95 parts per million. Strontium is concentrated in aragonitic skeletons and magnesium in calcitic skeletons. Coral aragonite has a higher ...(100 of 3327 words)

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