Determining the grainsize of sediment with increasing depth in core GC10, located in the Capricorn Channel

A gravity core (GC10) was collected from a depth of 335 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). Samples were separated into different size fractions to determine the % of each grainsize at each sample depth. Although not overly accurate, the information is correlated with analyses of other parameters to impart clues to the environmental changes within the core. This assembly of information suggests that the core reaches the Last Glacial Maximum (LGM) at ~130cm depth. The smallest size fraction (

本研究从南大堡礁（Great Barrier Reef, GBR）摩羯水道内的海平面以下335米处采集了一根重力岩芯（gravity core, GC10）。将样品按不同粒级进行分离，以测定各样品深度下各粒度组分的占比。尽管该检测精度并非极高，但将其与其他参数的分析结果进行关联后，可为该岩芯所记录的区域环境变化提供相关线索。综合各类信息可知，该岩芯约在130厘米深度处抵达末次盛冰期（Last Glacial Maximum, LGM）。最小粒级组分（