The two unconformity bounded sequences are separated from one another in seismic section by a regional unconformity. The inner shelf sand ridge facies is part of the upper sequence and forms the topographic linear ridge systems. Three large sand ridges are identified through seismic analysis, two of which are considered to be of potential economic importance based upon their location, sediment characteristics and volume estimates. The Inner Sand Ridge contains an estimated 37 million cubic meters of usable sediment. Wood fragments dated at greater than 42 ka were recovered from the lower sequence below the regional unconformity.
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