Phytolith assemblages as indicators of coastal environmental changes and hurricane overwash deposition

doi:10.1191/0959683605hl870ra

	Phytolith assemblages as indicators of coastal environmental changes and hurricane overwash deposition
	Lu, HY ; Liu, KB
刊名	HOLOCENE
	2005-11-01
卷号	15 期号:7 页码:965-972
关键词	Phytoliths Hurricanes Palaeotempestology Coastal Environments Sand Dunes Overwash Deposition Atlantic Coast Gulf Of Mexico Late Holocene
ISSN号	0959-6836
DOI	10.1191/0959683605hl870ra
文献子类	Article
英文摘要	We demonstrate that phytolith assemblages are a useful proxy for reconstructing coastal environmental changes and for validating the overwash origin of sand layers in palaeotempestology studies. Phytolith analysis was conducted oil 50 topsoil or surface sediment samples collected from a variety of coastal plant communities or depositional environments in the southeastern USA. The data suggest that different coastal subenvironments can be distinguished by their modern phytolith assemblages. or example, coastal marsh samples contain a diverse phytolith assemblage dominated by smooth-elongate and square morpho-types and maritime forest samples are dominated by phytoliths from palms and broadleaf dicotyledonous plants. Remarkably, the phytolith assemblages from sand dunes are characterized by high percentages of two-horned-tower, flat-tower, spool/horned-tower and short-saddle types. Phytolith analysis of three prehistoric sand layers in a sediment core from Western Lake, northwestern Florida, shows that they contain a phytolith assemblage similar to those characteristic of sand dunes and interdune meadows. These observations are confirmed by the results of principal components analysis and discriminant analysis on the modern and fossil phytolith data sets. Our study results support the interpretation that the sand layers in Western Lake were indeed formed by the erosion of sand dunes during overwash processes caused by landfalling catastrophic hurricanes.
WOS关键词	SOUTH-CAROLINA COAST ; SEDIMENT RECORD ; BARRIER-ISLAND ; RECONSTRUCTION ; POLLEN ; VEGETATION ; COLUMBIA ; GRASSES ; HISTORY ; SOILS
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	HODDER ARNOLD, HODDER HEADLINE PLC
WOS记录号	WOS:000233135300004
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64996]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, KB
作者单位	1.Louisiana State Univ, Dept Geog & Anthropol, Baton Rouge, LA 70803 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Lu, HY,Liu, KB. Phytolith assemblages as indicators of coastal environmental changes and hurricane overwash deposition[J]. HOLOCENE,2005,15(7):965-972.
APA	Lu, HY,&Liu, KB.(2005).Phytolith assemblages as indicators of coastal environmental changes and hurricane overwash deposition.HOLOCENE,15(7),965-972.
MLA	Lu, HY,et al."Phytolith assemblages as indicators of coastal environmental changes and hurricane overwash deposition".HOLOCENE 15.7(2005):965-972.