The Holocene record of lake levels of Mansell Pond, central Maine, USA

Autor: Heather Almquist, Ann C. Dieffenbacher-Krall, Riley Flanagan-Brown, David Sanger
Rok vydání: 2001
Předmět:
Zdroj: The Holocene. 11:189-201
ISSN: 1477-0911
0959-6836
DOI: 10.1191/095968301677768783
Popis: A palaeohydrological study of Mansell Pond, a small (4 ha), closed-basin lake in central Maine, revealed distinct changes in lake levels throughout the Holocene. We examined the texture, organic content and macrofossils of eight cores and obtained 29 radiocarbon dates on transitions between sedimentary units. The water level fell between about 800014C yr BP and 600014C yr BP, and remained low until after 500014C yr BP. The water level may have begun rising as early as 475014C yr BP, with the most rapid increase occurring from 322514C yr BP to 278014C yr BP. This interpretation varies at some points from an earlier assessment of Mansell Pond's Holocene lake levels that was based on pollen and charcoal evidence from a single core. Records of Holocene lake levels from eastern Canada, the Lake Ontario region and southern New England are inconsistent with each other, suggesting that the influence of dominant air masses has been highly localized in this region
Databáze: OpenAIRE