Beryllium-10, mineralogy and grain size distribution of DSDP Hole 68-502B (Table 1), supplement to: Aldahan, Ala; Possnert, Göran (1998): A high-resolution 10Be profile from deep sea sediment covering the last 70 ka: indication for globally synchronized environmental events. Quaternary Science Reviews, 17(11), 1023-1032

• Main Authors: Aldahan, Ala, Possnert, Göran
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1998
• Subjects: DEPTH, sediment/rock; Beryllium-10; Beryllium-10, standard deviation; Age model; Age, dated; Age, dated standard deviation; Calcium carbonate; Quartz; Feldspar; Clay minerals; Calcite; Size fraction > 0.064 mm; Size fraction 0.064-0.032 mm; Size fraction 0.032-0.006 mm; Size fraction 0.006-0.002 mm; Size fraction < 0.002 mm, clay; Density; Drilling/drill rig; Accelerator mass spectrometry AMS; Age model, stable isotope stratigraphy; Age, 14C AMS; X-ray diffraction XRD; Grain size, CILAS 715 B Laser Particle Analyser; Leg68; Glomar Challenger; Deep Sea Drilling Project DSDP; Antarc*; Antarctica; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.743344; https://doi.pangaea.de/10.1594/PANGAEA.743344

We present a high-resolution 10Be profile from deep sea sediments (sampled from Hole 502B in the Caribbean sea) that strongly resembles the 10Be record in ice core profiles, particularly the Vostok core from Antarctica. This high-resolution profile revealed occurrences of enhanced 10Be concentrations at about 23-24, 37-39 and 60-65 ka. The excellent match between these peaks appearing in a georeservoir profile other than in polar ice, strengthens the implications that can be inferred from 10Be and provide global markers for chronological correlation of climatic events. The position at low latitude of the studied sediment section is, unlike the case with the high latitude polar regions, excellent for exposing causes of modulation in 10Be production. We interpret the source of the pattern and enhancements, particularly the 37-39 ka peak, of 10Be to be global and do not strictly relate to climatic conditions and/or production rates specific to the polar regions.