| Title | Neoglacial ice expansion and late Holocene cold-based ice cap dynamics on Cumberland Peninsula, Baffin Island, Arctic Canada |
| |
| Author | Margreth, A; Dyke, A S; Gosse, J C; Telka, A M |
| Source | Quaternary Science Reviews vol. 91, 2014 p. 242-256, https://doi.org/10.1016/j.quascirev.2014.02.005 |
| Links | Supplement (PDF 1.05 MB)
|
| Image |  |
| Year | 2014 |
| Alt Series | Earth Sciences Sector, Contribution Series 20140119 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Nunavut |
| NTS | 16E; 16L; 25H; 26I |
| Area | Cumberland Peninsula; Baffin Island |
| Lat/Long WENS | -65.0000 -63.0000 67.0000 65.0000 |
| Subjects | geochronology; paleontology; radiocarbon dates; fossils; Holocene; sea ice; ice; climatic fluctuations; flora; vegetation; cores; Medieval Warm Period; Quaternary |
| Illustrations | analyses |
| Program | GEM: Geo-mapping for Energy and Minerals Multiple Metals - Cumberland Peninsula (Baffin Island, Nunavut) |
| Abstract | Radiocarbon dating of fossil flora and fauna collected along receding cold-based ice caps and cold-based sections of polythermal glaciers on Cumberland Peninsula reveal insights into Neoglacial ice
expansion and late Holocene ice dynamics. The taphonomic advantages of subfossilized moss were exploited to precisely document regional expansions of ice caps through the late Holocene. When compared with climate proxies and records of volcanic
eruptions, the moss radiocarbon age distributions indicate i) onset of Neoglaciation shortly after 5 ka, concomitant with increased sea ice cover, ii) intensification of ice expansion between 1.9 and 1.1 ka, followed by halt of ice growth, or ice
recession during the Medieval Warm Period, and iii) renewed ice expansion after 0.8 ka, in response to cooling related to a combination of large volcanic eruptions and low solar activity. Overall, the observations support a model of
near-instantaneous glacial response to regional climate controls and that these responses were synchronous throughout eastern Canadian Arctic and possibly eastern Greenland. |
| GEOSCAN ID | 294831 |
|
|