(Table S1) Age determination of sediment core MD02-2550C2, supplement to: Williams, Carlie; Flower, Benjamin P; Hastings, D; Guilderson, Thomas P; Quinn, Kelly A; Goddard, Ethan A (2010): Deglacial abrupt climate change in the Atlantic Warm Pool: A Gulf of Mexico perspective. Paleoceanography, 115(4), PA4221


During the last deglaciation, Greenland ice core and North Atlantic sediment records exhibit multiple abrupt climate events including the Younger Dryas cold episode (12.9-11.7 ka). However, evidence for the presence of the Younger Dryas in the Gulf of Mexico (GOM) and the relationship between GOM sea surface temperature (SST) and high-latitude climate change is less clear. We present new Mg/Ca-SST records from two varieties of the planktonic foraminifer Globigerinoides ruber (white and pink) to assess northern GOM SST history from approximately 18.4-10.8 ka. Thirty-five accelerator mass spectrometry (AMS) 14C dates from Orca Basin core MD02-2550 provide excellent age control and document high sedimentation rates (~40 cm/kyr). G. ruber (white and pink) Mg/Ca-SST data exhibit increases (~4.6 ± 0.6°C and ~2.2 ± 0.5°C, respectively) from at least 17.8-16.6 ka, with nearly decadal resolution that are early relative to the onset of the Bolling-Allerod interstadial. Moreover, G. ruber (white) SST decreases at 16.0-14.7 ka (~1.0 ± 0.5°C) and 12.8-11.6 ka (~2.4 ± 0.6°C) correlate to the Oldest and Younger Dryas in Greenland and Cariaco Basin. The G. ruber (pink) SST record, which reflects differences in seasonality and/or depth habitat, is often not in phase with G. ruber (white) and closely resembles Antarctic air temperature records. Overall, it appears that Orca Basin SST records follow Antarctic air temperature early in the deglacial sequence and exhibit enhanced seasonality during Greenland stadials.

DOI https://doi.org/10.1594/PANGAEA.831136
Related Identifier https://doi.org/10.1029/2010PA001928
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.831136
Creator Williams, Carlie; Flower, Benjamin P; Hastings, D; Guilderson, Thomas P; Quinn, Kelly A; Goddard, Ethan A
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2010
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 207 data points
Discipline Earth System Research
Spatial Coverage (-91.346 LON, 26.946 LAT); Orca Basin