Beryllium-10, mineralogy and grain size distribution of DSDP Hole 68-502B (Table 1)

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.本研究报道了一份采自加勒比海502B钻孔的深海沉积物高分辨率铍-10（¹⁰Be）剖面，该剖面与冰芯剖面（尤其是南极沃斯托克（Vostok）冰芯）中的铍-10记录高度相似。该高分辨率剖面显示，在约23~24 ka、37~39 ka及60~65 ka处存在铍-10浓度升高的现象。这些峰值不仅出现在极地冰芯之外的地质储库剖面中，且二者匹配度极高，这强化了从铍-10记录中可推导的科学结论，并为气候事件的年代学对比提供了全球性标记物。与高纬度极地地区不同，本次研究的沉积剖面位于低纬度区域，这非常利于揭示铍-10产生速率调制的成因机制。我们认为，铍-10的分布模式与浓度升高现象（尤其是37~39 ka处的峰值）的来源具有全球性，且并不严格关联于极地地区专属的气候条件或铍-10产生速率。