Index Catalog // ScholarsArchive@OSU

Creator:: Lund, David C. and Mix, Alan C.
Abstract:: Northeast Pacific benthic foraminiferal δ¹⁸O and δ¹³C reveal repeated millennial-scale events of strong deep-sea ventilation (associated with nutrient depletion and/or high gas exchange) during stadial (cool, high ice volume) episodes from 10 to 60 ka, opposite the pattern in the deep North Atlantic. Two climate mechanisms may explain this pattern....
Resource Type:: Article

Creator:: Hastings, David W., Emerson, Steven R., and Mix, Alan C.
Abstract:: We have used the vanadium concentration in cleaned foraminiferal calcite as a tracer of seawater V changes in the past. Since the benthic flux of vanadium is sensitive to the redox potential of sediments, changes in the vanadium concentration of seawater should be a reflection of changes that control the...
Resource Type:: Article
Full Text:: sediments David W. Hastings1 and Steven R. Emerson School of Oceanography, University of Washington

Creator:: Russell, Ann D., Emerson, Steven, Mix, Alan C., and Peterson, Larry C.
Abstract:: We examine the utility of the uranium (U) content of planktonic foraminifera tests as an indicator of past changes in seawater U content. The U/Ca ratio in foraminifera from Atlantic and Caribbean cores in constant in the Holocene and decreases by ~25% during the last glacial period. Magnesium/calcium (Mg/Ca) ratios...
Resource Type:: Article
Full Text:: Alan C. Mix College of Oceanography, Oregon State University, Corvallis Larry C. Peterson

Creator:: Lyle, Mitchell, Marcantonio, Franco, Moore, Willard S., Murray, Richard W., Huh, Chih-An, Finney, Bruce P., Murray, David W., and Mix, Alan C.
Abstract:: We use flux, dissolution, and excess ²³⁰Th data from the Joint Global Ocean Flux Study and Manganese Nodule Project equatorial Pacific study Site C to assess the extent of sediment focusing in the equatorial Pacific. Measured mass accumulation rates (MAR) from sediment cores were compared to reconstructed MAR by multiplying...
Resource Type:: Article
Full Text:: 11 Bruce P. Finney6, finney@isu.edu 12 David W. Murray7, David_Murray@Brown.edu 13 Alan C. Mix8

Creator:: Buizert, Christo and Schmittner, Andreas
Abstract:: Glacial periods exhibit abrupt Dansgaard-Oeschger (DO) climatic oscillations that are thought to be linked to instabilities in the Atlantic meridional overturning circulation (AMOC). Great uncertainty remains regarding the dynamics of the DO cycle, as well as controls on the timing and duration of individual events. Using ice core data we...
Resource Type:: Article

ScholarsArchive@OSU