Textural and geochemical evidence for the provenance of aeolian sand deposits on the Aquitaine coast, SW France

Author:

Saye Samantha E.1,Pye Kenneth1

Affiliation:

1. Surface Processes and Modern Environments Group, Department of Geology, Royal Holloway, University of London Egham, Surrey, TW20 0EX, UK

Abstract

AbstractThe coastal dune system of the Aquitaine region, SW France, is the largest in Europe. At the present time the dunes are mostly stabilized by forest vegetation which is largely the product of dune stabilization schemes undertaken since the late 18th century. Much of the shoreline is currently eroding at rates of 1–2ma−1, which are likely to increase if predictions of accelerated sea-level rise and increased storminess are correct. The sources of the beach and dune are poorly understood, and need to be identified in order to assess the sand budgets and likely dynamic response of the dune systems to changes in environmental forcing factors. This paper presents the results of an investigation to characterize the beach and aeolian sand in the region, and to identify its origin. The dune sands were found to be texturally and compositionally similar to the Quaternary Sable de Landes which occurs landward of, and partially beneath, the coastal dune belt. The results suggest that marine, aeolian and local fluvial reworking of the Sable de Landes has provided the main source of coastal dune sand, although marine erosion of Pleistocene deposits exposed in the coastal cliffs of the Medoc has made a secondary contribution.

Publisher

Geological Society of London

Subject

Geology,Ocean Engineering,Water Science and Technology

Reference17 articles.

1. Aubié S. Tastet J-P. (2000) Coastal erosion, processes and rates: an historical study of the Gironde coastline, Southwestern France. Journal of Coastal Research, in press.

2. Barrère P. (1992) Proceedings of the Third European Dune Congress (17–21, Galway, Ireland), in Coastal Dunes: Geomorphology, Ecology and Management for Conservation, Dynamics and management of the coastal dunes of the Landes, Gascony, France, eds Carter R. W. G. Curtis T. G. F. Sheehy-Skeffington M. J. (Balkema, Rotterdam), pp 25–32.

3. Chronology of coastal dunes in the southwest France;Bressolier;Catena Supplement,1990

4. Evidence for the timing of dune development on the Aquitaine coast, Southwest France;Clarke;Zeitschrift fur Geomorphologie NF Supplement Band,1999

5. Cooper W. S. (1958) Coastal sand dunes of Oregon and Washington, Memoirs of the Geological Society of America, 104.

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3