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Geoarchaeological Proxies of Late Holocene Sea Level Rise: Marine Transgression and the Archaeological Record of the Delmarva Peninsula

Author(s): Darrin Lowery

Year: 2015

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Summary

Understanding the magnitude of sea level rise over the past century is a hot topic in the Chesapeake Bay region. The research presented in this paper combines 20th-century aerial imagery, 19th-century land use data, and geoarchaeological information associated with various coastal archaeological sites to provide a high-resolution marine transgression record spanning the past two centuries. Tide gauge models have suggested that there has been ~1 foot (30cm) to ~1.5 feet (49cm) of sea level rise in the Chesapeake Bay over the past century. Some researchers have even stated that the rate of sea level rise in the Middle Atlantic region over the past century is greater than at any moment during the past 2,000 years. The geoarchaeological research in this presentation shows how tide gauge models for the Chesapeake Bay region have greatly overestimated the amount of historic relative marine transgression. This research also focuses on understanding the geological parameters of sea level rise during the Holocene and provides a geoarchaeological calibration tool to better understand recent sea level change.

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Geoarchaeological Proxies of Late Holocene Sea Level Rise: Marine Transgression and the Archaeological Record of the Delmarva Peninsula. Darrin Lowery. Presented at The 80th Annual Meeting of the Society for American Archaeology, San Francisco, California. 2015 ( tDAR id: 397162)


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Spatial Coverage

min long: -84.067; min lat: 36.031 ; max long: -72.026; max lat: 43.325 ;

Arizona State University The Andrew W. Mellon Foundation National Science Foundation National Endowment for the Humanities Society for American Archaeology Archaeological Institute of America