University of Ottawa (Canada)
Analysis of laminated sediments from Lake DV09, northern Devon Island, Nunavut, Canada
Abstract
dc:descriptionA 147cm sediment core from Lake DV09, northern Devon Island, Nunavut, Canada (75° 34'34"N, 89° 18'55"W) contains annually-laminated (varved) sediments, providing a 1600-year record of climate variability. A minerogenic lamina deposited during the annual thaw period and a thin deposit of organic matter deposited during the summer and through the winter, together form a clastic-organic couplet each year. The thinnest varves occur from AD800-1050, and the thickest from AD1100-1300, during the Medieval Warm Period. The relative sediment density is also highest during this period suggesting increased sediment transport energy. The coldest period of the Little Ice Age appears to be during the AD 1600s. Varve widths over the past century indicate climate warming in the region.
Degree
thesis:*- Grantor dc:publisher
- University of Ottawa (Canada)
- Year dc:date
- 2013
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Courtney Mustaphi, Colin John
Subjects
dc:subject × 4Rights
- Language dc:language
- en
Identifiers
dc:identifier.*- Identifier
-
Source: Masters Abstracts International, Volume: 48-01, page: 0338.
http://dx.doi.org/10.20381/ruor-19098 - OAI identifier oai:identifier
- oai:ruor.uottawa.ca:10393/28123