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Creator:: Carlson, Anders E., Clark, Peter U., 1956-, Haley, Brian A., and Klinkhammer, Gary P.
Abstract:: The collapse of the Laurentide Ice Sheet over Hudson Bay ∼8.47 ka allowed the rapid drainage of glacial Lake Agassiz into the Labrador Sea, an event identified as causing a reduction in Atlantic meridional overturning circulation (AMOC) and the 8.2 ka cold event. Atmosphere‐ocean models simulations based on this forcing,...
Resource Type:: Article
Full Text:: the 8.2 ka cold event Anders E. Carlson,1 Peter U. Clark,2 Brian A. Haley,3 and Gary P. Klinkhammer4

Creator:: Klinkhammer, Gary P., Haley, Brian A., Mix, Alan C., Benway, H. M., and Cheseby, M.
Abstract:: The primary Mg/Ca ratio of foraminiferal shells is a potentially valuable paleoproxy for sea surface temperature (SST) reconstructions. However, the reliable extraction of this ratio from sedimentary calcite assumes that we can overcome artifacts related to foraminiferal ecology and partial dissolution, as well as contamination by secondary calcite and clay....
Resource Type:: Article
Full Text:: analysis of foraminifera for Mg//Ca paleothermometry G. P. Klinkhammer, B. A. Haley,1 A. C. Mix, H. M

Creator:: Benway, H. M., Haley, Brian A., Klinkhammer, Gary P., and Mix, Alan C.
Abstract:: Mg/Ca ratios in planktonic foraminifera reflect calcification temperatures and are thus useful for sea surface temperature (SST) reconstructions. Despite the obvious utility of this paleoceanographic tracer, problems of dissolution, gametogenic calcification, and contaminant phases have thus far limited confidence in Mg/Ca-based reconstructions. Here we show strong evidence of Mg heterogeneity...
Resource Type:: Article
Full Text:: for Mg/Ca paleothermometry H. M. Benway, B. A. Haley, G. P. Klinkhammer, and A. C. Mix College of

Creator:: Benway, Heather M., Mix, Alan C., Haley, Brian A., and Klinkhammer, Gary P.
Abstract:: Multiproxy geologic records of δ18O and Mg/Ca in fossil foraminifera from sediments under the Eastern Pacific Warm Pool (EPWP) region west of Central America document variations in upper ocean temperature, pycnocline strength, and salinity (i.e., net precipitation) over the past 30 kyr. Although evident in the paleotemperature record, there is...
Resource Type:: Article
Full Text:: climate variability: 0–30 kyr H. M. Benway,1,2 A. C. Mix,1 B. A. Haley,3 and G. P. Klinkhammer1 Received

Creator:: Carlson, Anders E., Clark, Peter U., Haley, Brian A., Klinkhammer, Gary P., Simmons, Kathleen, Brook, Edward J., and Meissner, Katrin J.
Abstract:: The Younger Dryas cold interval represents a time when much of the Northern Hemisphere cooled from ≈12.9 to 11.5 kiloyears B.P. The cause of this event, which has long been viewed as the canonical example of abrupt climate change, was initially attributed to the routing of freshwater to the St....
Resource Type:: Article
Full Text:: during the Younger Dryas cold event Anders E. Carlson*†, Peter U. Clark*, Brian A. Haley‡, Gary P

Creator:: Torres, Marta E., Mix, Alan C., Kinports, K., Haley, Brian A., Klinkhammer, Gary P., McManus, James, and de Angelis, M. A.
Abstract:: The isotopic composition of the dissolved inorganic carbon (DIC) collected at sites of active methane discharge on Hydrate Ridge, Oregon, reveals anaerobic methane oxidation mediated by bacteria, with δ13CDIC reaching values as low as –48‰ in the upper 4 cm of the sediment. In spite of the high sulfide levels...
Resource Type:: Article
Full Text:: D13C of benthic foraminifera shells? M. E. Torres,1 A. C. Mix,1 K. Kinports,1 B. Haley,1 G. P

Creator:: Alleau, Y., Colbert, D., Covert, P., Haley, Brian A., Qiu, X., Collier, Robert W., Falkner, Kelly, Hales, Burke, Prahl, Fredrick, and Gordon, L.
Abstract:: It has been recognized since the 1950's that radioisotopic disequilibrium between naturally occurring parent-daughter isotope pairs in seawater can provide information on the rate of processes segregating them. In the surface ocean, the U-238:Th-234 parent-daughter pair tends to display measurable disequilibrium that is attributable to the effects of scavenging on...
Resource Type:: Article
Full Text:: mathematical treatment revisited Y. Alleau, D. Colbert, P. Covert, B. Haley, X. Qiu, R. Collier, K. Falkner 1

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