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| Addison, Jason A.; Finney, Bruce P.; Dean, Walter E.; Davies, Maureen H.; Mix, Alan C.; Stoner, Joseph S.; Jaeger, John M.. |
| Biogenic opal, organic carbon, organic matter stable isotope, and trace metal data from a well-dated, high-resolution jumbo piston core (EW0408-85JC; 59 degrees 33.3'N, 144 degrees 9.21'W, 682 m water depth) recovered from the northern Gulf of Alaska continental slope reveal changes in productivity and nutrient utilization over the last 17,000 years. Maximum values of opal concentration (similar to 10%) occur during the deglacial Bolling-Allerod (B-A) interval and earliest Holocene (11.2 to 10.8 cal ka BP), moderate values (similar to 6%) occur during the Younger Dryas (13.0 to 11.2 cal ka BP) and Holocene, and minimum values (similar to 3.5%) occur during the Late Glacial Interval (LGI). When converted to opal mass accumulation rates, the highest values... |
| Tipo: Text |
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| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00266/37680/36920.pdf |
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| Jaeger, John M.; Koppes, Michele N.. |
| Glacial erosion and sediment production are of interest to diverse scientific communities concerned with the interaction of climatic, tectonic and surface processes that influence the evolution of orogens and with the climatic signals archived in glacigenic strata. We review the current state of knowledge on the generation, transfer, and accumulation of glacigenic sediment from land to sea. We draw from geomorphology, marine geology, geochronology, numerical modeling of surface processes and landscape evolution, and experimental and field observations of glacier erosion and deposition, and the interaction of ice with its bed and the ocean boundary. Our primary goal is to examine glacial systems using a holistic source-to-sink approach, with a focus on... |
| Tipo: Text |
Palavras-chave: Ice dynamics; Glacial history; Glacigenic sediment; Glacimarine sedimentary processes; High-latitude continental margins; Quaternary stratigraphy. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00496/60799/64919.pdf |
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