DOI cat of the tributaries and rivers that make up the rivers and tributaries that flow when brought sand accretion. The top of the sandbar is affected by the waves should complete components is sand. On the common trace wavy, traces the flow. In the quiet period of organic matter and fine grained sediments deposited rapidly. The section on the top of coarse sediment mud up special chờm coating Sydney contains organic material part of the money. After buried organic matter hydrocacbua metabolism and then move up to accumulate in the seams of this sand
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