Figure 3: A small section of a sediment core taken from South Pond in Stark, NH. The sandy, light colored layer contains coarser sediment than the surrounding darker organic muds, In addition to visual analysis, these layers are distinguished by performing laboratory tests to measure sediment size and organic content. During storms, small wood fragments (i.e. twigs) wash into the lake along with the coarse sediment. These fragments are used for radiocarbon dating to calculate the age of the deposit.
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