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On the Erosive Trail of A 14Th and 15Th Century Hurricane in Connecticut (Usa) Salt Marshes

Published online by Cambridge University Press:  18 July 2016

O VAN de Plassche ,
A J Wright ,
K VAN der Borg  and
F A M de Jong
O VAN de Plassche*
Affiliation:
Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands
A J Wright
Affiliation:
Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands
K VAN der Borg
Affiliation:
R J van der Graaff Laboratory, Universiteit Utrecht, P.O. Box 80.000, 3508 TA, the Netherlands
F A M de Jong
Affiliation:
R J van der Graaff Laboratory, Universiteit Utrecht, P.O. Box 80.000, 3508 TA, the Netherlands
*
Corresponding author. Email: [email protected].
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Abstract

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This paper examines if an erosive hiatus found in the peat stratigraphy and marsh-accumulation record from northwest Hammock River Marsh (HRM), Connecticut (CT) can be attributed to a 14th or a 15th century hurricane, each documented by a radiocarbon-dated overwash fan in Succotash Marsh (SM) (Rhode Island) about 90 km to the east. Given that (i) the best estimate age range for the 15th century overwash deposit in SM (1400–1440 cal AD, 2 σ) overlaps entirely with that for first plant growth after erosion at HRM (1390–1450 cal AD, 2 σ), while the best estimate age range for the 14th century overwash deposit (1290–1410 cal AD, 2 σ) overlaps just 10 yr, and (ii) interpretation of the available stratigraphic and sedimentary evidence from HRM suggests that a high-energy event offers the simplest explanation for the observed marsh erosion, we conclude that a plausible link exists between the 15th century hurricane and the marsh erosion in HRM. The best estimate age range for the 14th century hurricane appears to overlap for 91% with the age range for the first plant growth (1290–1400 cal AD, 2 σ) following marsh erosion in East River Marsh (CT), located about 12 km west of HRM. These results imply that erosive boundaries in salt-marsh peat deposits have potential as markers of past hurricane activity.

Type
Part II
Information
Radiocarbon , Volume 46 , Issue 2: Proceedings of the 18th International Radiocarbon Conference (Part 2 of 2), Conference Editors: Nancy Beavan Athfield, Rodger J Sparks , 2004 , pp. 775 - 784
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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