@article {134, title = {Marine radiocarbon reservoir corrections (∆R) for Chesapeake Bay and the Middle Atlantic Coast of North America}, journal = {Quaternary Research}, volume = {77}, year = {2012}, note = {id: 2155}, pages = {205-210}, abstract = {Radiocarbon dates from known age, pre-bomb eastern oyster (Crassostrea virginica) shells provide local marine reservoir corrections (∆R) for Chesapeake Bay and the Middle Atlantic coastal area of eastern North America. These data suggest subregional variability in ∆R, ranging from 148 {\textpm} 46 14C yr on the Potomac River to - 109 {\textpm} 38 14C yr at Swan Point, Maryland. The ∆R weighted mean for the Chesapeake{\textquoteright}s Western Shore (129 {\textpm} 22 14C yr) is substantially higher than the Eastern Shore (- 88 {\textpm} 23 14C yr), with outer Atlantic Coast samples falling between these values (106 {\textpm} 46 and 2 {\textpm} 46 14C yr). These differences may result from a combination of factors, including 14C-depleted freshwater that enters the bay from some if its drainages, 14C-depleted seawater that enters the bay at its mouth, and/or biological carbon recycling. We advocate using different subregional ∆R corrections when calibrating 14C dates on aquatic specimens from the Chesapeake Bay and coastal Middle Atlantic region of North America.}, issn = {0033-5894}, doi = {10.1016/j.yqres.2011.11.002}, url = {http://www.sciencedirect.com/science/article/pii/S0033589411001414}, author = {Rick, Torben C. and Henkes, Gregory A. and Lowery, Darrin L. and Colman, Steven M. and Culleton, Brendan J.} }