- 作者：Graham P. Wilson ; Angela L. Lamb ; Melanie J. Leng ; Silvia Gonzalez and David Huddart
- 刊名：Quaternary Science Reviews
- 出版年：2005
- 期刊代码：78_02773791
- 类别：ear
- 出版时间：2005
- 卷：24
- 期：18-19
- 页码：2015-2029
- 文件大小：1315 K
摘要
The reconstruction of former environments, and ultimately relative sea-level changes, in coastal and estuarine environments normally utilises a range of microfossil proxies, such as diatoms, foraminifera and pollen. As microfossils are sometimes poorly preserved, sparse or absent from coastal sediments, this study assesses the potential of using style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml20&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=f1ae1b316ed93712935652a8dda9468f" title="Click to view the MathML source">δ<sup>13sup>C and C/N analysis of sedimentary organic matter as an alternative. Contemporary high inter-tidal and sub-tidal surface saltmarsh sediments of the Mersey Estuary, UK, reveal distinctly different style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml21&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=2c24b9ba0e4501f2053b320de1c196fa" title="Click to view the MathML source">δ<sup>13sup>C and C/N values, reflecting the contrasting sources of organic matter in relation to ground elevation within the tidal frame. Despite decomposition effects, the relationship between ground elevation, style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml22&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=6e7d267de0ba923166650e700a17cc81" title="Click to view the MathML source">δ<sup>13sup>C and C/N, is preserved in the sediment record, with a gradual increase in style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml23&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=a61202e3229af38e6f98c352db307ece" title="Click to view the MathML source">δ<sup>13sup>C and decrease in C/N from supra-tidal, through to inter-tidal and to sub-tidal environments. Holocene variations in style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml24&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=bf09124210d526f136089f4a250387f1" title="Click to view the MathML source">δ<sup>13sup>C and C/N are compared with stratigraphical palaeoenvironmental changes inferred from diatom and pollen evidence and show a good correspondence. Although style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6VBC-4GG2JFK-2&_mathId=mml25&_user=10&_cdi=5923&_rdoc=5&_handle=V-WA-A-W-AB-MsSAYWA-UUW-U-AABZBZCUED-AABBEVCYED-CAYDWAZCV-AB-U&_acct=C000050221&_version=1&_userid=10&md5=5d19178a937e00a3b181d282410f85e2" title="Click to view the MathML source">δ<sup>13sup>C and C/N are not as accurate as microfossil analysis in terms of coastal palaeoenvironmental reconstruction, they may be applied successfully in the field of relative sea-level reconstruction by helping to verify sea-level index points when microfossils are absent.