This brought about the deposition of deeper-water, fine grained sediments of the "'Bokkeveld Group " '.
2.
At the surface, areas that are rich in larger stones contain much less water than highly porous areas of finer grained sediments.
3.
The reef front ( ocean side ) is a high energy locale whereas the internal lagoon will be at a lower energy with fine grained sediments.
4.
These deposits are likely to be composed of fine grained sediment, having been laid down in a low energy environment, where any potential biosignatures could be preserved.
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