Raff, J.L., Shawler, J.L., Ciarletta, D.J., Hein, E.A., and Hein, C. J.
Sediment Supply
Storms
Subtle Controls Mod. from Harris, 1992
Modified from Engelhart et al., 2012
Relative sea-level change
Deaton, Hein, and Kirwan, 2016
Western Ridge
Italian Ridge
Little Beach
Revels Island
Western Ridge 973 ± 144 CE
1000 – 1700 CE
Material for radiocarbon analysis…. Somewhere under that water 560 ± 60 years
Dr. Chris Hein (under blanket) Collecting OSL samples
Western Ridge 973 ± 144 CE
Little Beach 1761 ± 139 CE 1876 ± 20 CE
Revels Island 1456 ± 60 CE
Western Ridge 973 ± 144 CE
Little Beach 1761 ± 139 CE 1876 ± 20 CE
Revels Island 1456 ± 60 CE
Western Ridge 973 ± 144 CE Italian Ridge 1740 ± 20 CE
Little Beach 1761 ± 139 CE 1876 ± 20 CE
Revels Island 1456 ± 60 CE
Little Beach
1967
2016
Modified from Richardson, 2012
• Pleistocene highs stabilize and “pin” Holocene barriers • Abundant sediment supply (?) allows the barrier to prograde; young barrier • Recent (last 200 years) shift to a parallel erosional regime