(Table T3) Calcium carbonate mineralogy of ODP Leg 182 sites, Great Australian Bight

Carbonate mineralogy was determined on a total of 2845 samples from Sites 1126-1132 situated on the southern margin of the Australian continent. Five of these sites represent distal to proximal transects (Sites 1127-1131-1129 and 1132-1130), which penetrate principally Pleistocene-aged sediments. These sediments exhibit high concentrations of aragonite and high-Mg calcite (HMC) in shallow portions of the core, decreasing with depth. Dolomite was ubiquitous throughout these five cores and showed an inverse correlation in some instances with HMC. Sites 1126 and 1128 penetrated older strata and show lower concentrations of aragonite, HMC, and dolomite.

针对澳大利亚大陆南缘1126至1132站位的共计2845个样品，完成了碳酸盐矿物学分析。其中5个站位构成了远海至近岸的剖面序列（站位1127、1131、1129及1132、1130），这些站位主要穿透更新世沉积地层。该类沉积物在岩心浅层中文石与高镁方解石（high-Mg calcite, HMC）含量较高，且随深度增加呈降低趋势。白云石在这5个岩心中广泛分布，且在部分层位中与高镁方解石呈现负相关关系。站位1126与1128钻遇了更古老的地层，其文石、高镁方解石及白云石的含量均处于较低水平。