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 (

本次采集了一根编号为GC10的重力岩心（gravity core），采集自大堡礁（Great Barrier Reef, GBR）南部摩羯水道（Capricorn Channel）内海平面下335米（meters below sea level, mbsl）处。研究人员将样品按不同粒级分离，以测定各采样深度下各粒度组分的占比。尽管该粒度组分占比的测定结果精度有限，但通过与其他参数的分析结果进行关联，可为该岩心所记录的环境变化提供指示线索。该套数据集表明，该岩心在约130cm深度处对应末次冰盛期（Last Glacial Maximum, LGM）地层。最小粒级组分（