| Title | A Holocene record of atmospheric dust deposition on the Penny Ice Cap, Baffin Island, Canada |
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| Author | Zdanowicz, C M ;
Zielinski, G A; Wake, C P; Fisher, D A; Koerner, R M |
| Source | Quaternary Research (New York) vol. 53, issue 1, 2000 p. 62-69, https://doi.org/10.1006/qres.1999.2091 |
| Image |  |
| Year | 2000 |
| Alt Series | Earth Sciences Sector, Contribution Series 20060263 |
| Publisher | Cambridge University Press (CUP) |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Nunavut |
| NTS | 26I/09; 26I/10; 26I/11; 26I/12; 26I/13; 26I/14; 26I/15; 26I/16; 26P/01; 26P/02; 26P/03; 26P/04; 26P/05; 26P/06; 26P/07; 26P/08 |
| Area | Penny Ice Cap; Baffin Island |
| Lat/Long WENS | -66.0000 -64.0000 67.5000 66.5000 |
| Subjects | paleontology; paleoclimates; Holocene; eolian deposits; arctic geology; ice; cores; core samples; climate; climate, arctic; climate effects |
| Illustrations | location maps; equations; geochemical plots; tables; graphs |
| Program | Polar Continental Shelf Project |
| Program | International Geosphere - Biosphere Program |
| Released | 2017 01 20 |
| Abstract | An >11,550-yr-long record of atmospheric dust deposition was developed from an ice core (P95) drilled through the Penny ice cap, Baffin Island. The P95 record documents environmental changes that
affected the production and transport of dust in the eastern Canadian Arctic during the late Pleistocene and Holocene. Dust deposition on the Penny ice cap was greatest in late-glacial time when the climate was dry and windy and comparatively low in
the Holocene. Microparticles deposited during late-glacial time are finer than in Greenland cores, suggesting distinct dust sources and transport trajectories to each region. Dust deposition at the P95 site increased after ca. 7800 yr ago as the
Penny ice cap receded and distance from local dust sources was reduced. Deflation of newly exposed marine sediments on southwestern Baffin Island may have contributed to this dust increase. The P95 and GISP2 (Greenland) dust records show diverging
trends in the middle to late Holocene, reflecting the growing influence of regional environmental conditions (e.g., dust source area, snow cover extent) on atmospheric dust deposition. This study further demonstrates how valuable records of
regional-scale paleoenvironmental changes can be developed from small circum- Arctic ice caps, even those affected by considerable melt. |
| GEOSCAN ID | 222779 |
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