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| Hendy, I. L.; Cosma, T.. |
| We present the first high-resolution record of iceberg calving on the continental slope of Vancouver Island, British Columbia (MD02-2496, 48 degrees 58N, 127 degrees 02W, 1243 m water depth), through the last glacial from the Cordilleran Ice Sheet (CIS). These previously unknown ice-rafted debris (IRD) events representing significant retreat of the western margin of the CIS out of marine waters show little correspondence with local climate change. High-resolution radiocarbon dating indicates that the younger IRD events coincide with global radiocarbon age plateaus that allow direct correlation with distal climate records where the same plateaus have been identified. The coincidence of episodic shedding of IRD from the CIS with North Atlantic climate events... |
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| Ano: 2008 |
URL: https://archimer.ifremer.fr/doc/00237/34841/33269.pdf |
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| Taylor, M. A.; Hendy, I. L.; Pak, D. K.. |
| A high-resolution record of ä18O and Mg/Ca-based temperatures spanning 10–50 ka has been reconstructed from the Vancouver margin of the northeastern Pacific Ocean (MD02-2496) from two planktonic foraminiferal species, Neogloboquadrina pachyderma (s.) and Globigerina bulloides. While ä18Ocalcite appears synchronous with Dansgaard-Oeschger Interstadials throughout the record, millennial scale variability in sea surface temperatures and reconstructed ä18Oseawater are frequently out of phase with Greenland climate. Changes in water mass characteristics such as ä18Ocalcite and enriched ä15N events apparently responded to millennial-scale climate change during Marine Isotope Stage 3 (MIS 3), such that negative ä18Ocalcite excursions coincided with heavier ä15N.... |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00296/40709/39706.pdf |
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