An archeological chronology for the region of Mobile Bay, Alabama was first worked out by Trickey in 1958 (Trickey 1958). Systematic excavations and radiocarbon dating now suggest that Indian sites, marked by shell middens and artifacts, were periodically overwhelmed by rise in water level and then re-occupied during each succeeding state of low sea level. Middens are dated at 4100, 3090, 2040 and 1080 B.P.
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Holmes et al. (1974) studied this question.
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