DOI: 10.1016/j.palaeo.2013.11.018
论文题名: Late Holocene marine transgression and the drowning of a coastal forest: Lessons from the past, Cape Cod, Massachusetts, USA
作者: Maio C.V. ; Gontz A.M. ; Weidman C.R. ; Donnelly J.P.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 393 起始页码: 146
结束页码: 158
语种: 英语
英文关键词: Holocene
; Marine transgression
; Paleoenvironment
; Paleoforest
; Paleogeography
; Sea-level rise
英文摘要: Extra-tropical storms in the spring of 2010 swept the New England coastline resulting in significant erosion along South Cape Beach, a barrier system located on Cape Cod, Massachusetts. The erosion revealed 111 subfossil stumps and a preserved peat outcrop. We hypothesize that the stumps represent an ancient Eastern Red cedar, Juniperus virginiana, stand growing in a back-barrier environment and drowned by episodic storm events and moderate rates of sea-level rise. Stumps, bivalves, and organic sediments, were radiocarbon dated using traditional and continuous-flow Atomic Mass Spectroscopy methods. Six sediment cores elucidated subsurface stratigraphy and environmental setting. Subfossil stumps ranged in age from 413±80 to 1239±53 calibrated years before present. We assume that this age represents the time at which the ancient trees were drowned by marine waters. Based on elevation and age, an 826year rate of submergence was calculated at 0.73mm/yr with an R2 value of 0.47. Core stratigraphy, microfossil assemblages, and radiocarbon ages indicate a dynamic barrier environment with frequent overwash and breaching events occurring during the past 500years. Shoreline change analysis showed that between 1846 and 2008, the shoreline retreated landward by 70m at a long-term rate of 0.43m/yr. Future increases in the rate of sea-level rise, coupled with episodic storm events, will lead to the destruction of terrestrial environments at rate orders of magnitude greater than that during the time of the paleoforest. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69507
Appears in Collections: 过去全球变化的重建
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作者单位: University of Massachusetts-Boston, School for the Environment, 100 Morrissey Blvd., Boston, MA 02125, United States; Waquoit Bay National Estuarine Research Reserve, 149 Waquoit Highway, Waquoit, MA 02536, United States; Woods Hole Oceanographic Institution, Coastal Systems Group, 266 Woods Hole Road, Mail Stop #22, Woods Hole, MA 02543, United States
Recommended Citation:
Maio C.V.,Gontz A.M.,Weidman C.R.,et al. Late Holocene marine transgression and the drowning of a coastal forest: Lessons from the past, Cape Cod, Massachusetts, USA[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,393