A HIGH-RESOLUTION BE-10 PROFILE FROM DEEP-SEA SEDIMENT COVERING THE LAST 70 KA - INDICATION FOR GLOBALLY SYNCHRONIZED ENVIRONMENTAL EVENTS

We present a high-resolution Be-10 profile from deep sea sediments (sa mpled from Hole 502B in the Caribbean sea) that strongly resembles the 10Be record in ice core profiles, particularly the Vostok core from A ntarctica. This high-resolution profile revealed occurrences of enhanc ed Be-10 concentrations at about 23-24, 37-39 and 60-65 ka. The excell ent match between these peaks appearing in a georeservoir profile othe r than in polar ice, strengthens the implications that can be inferred from Be-10 and provide global markers for chronological correlation o f climatic events. The position at low latitude of the studied sedimen t section is, unlike the case with the high latitude polar regions, ex cellent for exposing causes of modulation in Be-10 production. We inte rpret the source of the pattern and enhancements, particularly the 37- 39 ka peak, of Be-10 to be global and do not strictly relate to climat ic conditions and/or production rates specific to the polar regions. ( C) 1998 Elsevier Science Ltd. All rights reserved.