Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC14, located in the Capricorn Channel

A gravity core (GC14) was collected from a depth of 2004 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). The data from stable isotopes of Globigerinoides ruber were analysed to allow a preliminary understanding of the hemipelagic sedimentary environment over the last glacial / interglacial cycle. The results suggest that the core reaches the Last Glacial Maximum (LGM) at ~80cm depth corresponding to heavier 18-O values and other measured parameters.

重力岩心（gravity core）GC14采集于南澳大利亚大堡礁（Great Barrier Reef, GBR）摩羯座水道（Capricorn Channel）内，水深2004米（mbsl）。通过分析鲁比格方球虫（Globigerinoides ruber）的稳定同位素数据，初步了解了末次冰期/间冰期旋回期间的半远洋沉积环境。结果表明，该岩心在约80厘米深度处达到末次盛冰期（Last Glacial Maximum, LGM），对应较重的¹⁸O值及其他实测参数。