Abstract
ABSTRACT A sedge-peat bed, upon which a maximum of 35 feet of postglacial estuarine mud has been deposited, has been compressed in 7000 years to between 13 and 44 percent of its original thickness. By extrapolation an estimate may be made that the ultimate thickness will range between 10 and 20 percent of original thickness, depending on the amount of admixed sand. Such percentages are somewhat less than the reported ratio of compaction of peat to coal of about 3:1. However, these percentages represent total compaction beginning with original plant debris, whereas the peat-to-coal ratio of compaction does not include the earliest stage of alteration and consolidation.
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