In the earliest model of these features as a distinct phenomenon, their characteristic lagoon forms because hermatypic organisms attach to the outside of these features, depriving the inside of nutrients.
In the earliest model of these features as a distinct phenomenon, their characteristic lagoon forms because hermatypic organisms attach to the outside of these features, depriving the inside of nutrients. By contrast, a more recent modification allows for vertical deposits thanks to sea-level fluctuations, especially in the Pliocene-Pleistocene, when submergence allowed for reef formation to fill the accommodation space. The northernmost one of these features is Kure, lying at present just south of the Darwin Point where the rate of physical subsidence that would cause these features to become seamounts is just equal to the rate of reef formation that keeps them in existence. FTP, name this type of island, formed by coral living atop a once-active volcano.
In the earliest model of these features as a distinct phenomenon, their characteristic lagoon forms because hermatypic organisms attach to the outside of these features, depriving the inside of nutrients.
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