(Table 1) Age determination of ODP Hole 175-1084B ...

• Main Authors: Farmer, E Christa, deMenocal, Peter B, Marchitto, Thomas M
• Format: Dataset
• Language: English
• Published: PANGAEA 2005
• Subjects: Laboratory code/label; Sample code/label; DEPTH, sediment/rock; Age, dated; Age, dated standard error; Calendar age, maximum/old; Calendar age, minimum/young; Calendar age; Age, comment; Sedimentation rate; Duration; Drilling/drill rig; DSDP/ODP/IODP sample designation; Age, 14C AMS; Age, 14C calibrated; Leg175; Joides Resolution; Ocean Drilling Program ODP; Greenland; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.836843; https://doi.pangaea.de/10.1594/PANGAEA.836843

Mg/Ca analyses of G. bulloides and abundances of N. pachyderma (left coiling) from Ocean Drilling Program (ODP) Leg 175 Hole 1084B in the Benguela coastal upwelling system document lower sea surface temperatures during the Last Glacial Maximum (LGM), Younger Dryas, mid-Holocene, and Little Ice Age in the southeastern Atlantic. Taking into consideration the possible effects of differential carbonate dissolution, the Mg/Ca data indicate Younger Dryas temperatures 2°-3°C cooler than those of the early Holocene and LGM temperatures 4°-5°C cooler than those of the early Holocene. The cool interval during the deglacial period at Hole 1084B matches the timing of Younger Dryas shifts in Cariaco Basin and Greenland Ice Sheet records and that of a nearby alkenone record. Comparison of mid-Holocene cooling at Hole ODP1084B with other high-resolution records of Holocene and last deglacial sea surface temperatures from the tropical Atlantic implies consistent basin-wide changes in atmospheric circulation. A brief period ... : Supplement to: Farmer, E Christa; deMenocal, Peter B; Marchitto, Thomas M (2005): Holocene and deglacial ocean temperature variability in the Benguela upwelling region: Implications for low-latitude atmospheric circulation. Paleoceanography, 20(2), PA2018 ...