(Appendix 1) Carbonate content in relation to sediment type described for sediment core CRP-3

Determinations of total carbonate contents in the CRP-3 core yield additional information and knowledge, in the context of integrated investigations, thus enabling or enhancing the interpretation and characterization of depositional environment, sedimentation, and diagenesis. In the case of drilling profiles, they help to discern vertical gradation of facies sequences with repeating patterns or with changes in time. A total of 98 bulk samples originating from the Palaeogene strata (Early Oligocene and ?Late Eocene) in the CRP-3 borehole were studied, the depth interval being 0-823.11 metres below sea floor (mbsf). Ages for the Cenozoic strata (Fig. 1) are taken from the Cape Roberts Science Team (2000a, 2000b), Bücker et al. (this volume), and Sagnotti et al. (2000, this vol.) and are shown in the columns A and B of figure 1. No investigations were performed on the underlying ?Devonian strata from 823.11-939.42 mbsf (final depth). Twenty-eight of a total of 34 lithostratigraphic Cenozoic units of the borehole were sampled (Appendix 1). Fourty-seven samples (8.97-349.78 mbsf) are from the Early Oligocene section, whereas 51 samples (357.80-788.94 mbsf) originate from the Early Oligocene or ?Late Eocene strata. The sampling intervals are on average about 5-9 m for the Early Oligocene section and about 6-11 in in the Early Oligocene/?Late Eocene strata. All the samples were taken from sections of the profile of not more than 1-2 cm thickness. The samples were split; the portions of the samples were used for investigations with regard to clay minerals (Ehrmann, this volume), heavy minerals (Ehrmann, this volume), and mineralogy as revealed by XRD analyses (Neumann & Ehrmann, this volume).

对CRP-3岩芯（CRP-3 core）开展总碳酸盐含量测定，可在综合调查框架下获取额外信息与认知，进而支撑或优化沉积环境、沉积作用及成岩作用的解译与表征。针对钻井剖面而言，此类测定有助于识别具重复样式或随时间演化的相序垂向分异特征。本次研究共分析了CRP-3钻孔中取自古近纪地层（早渐新世及晚始新世（？））的98件块状样品，采样深度区间为0~823.11 海底以下米（metres below sea floor, mbsf）。新生代地层的年代学数据（图1）引自开普罗伯茨科学团队（2000a、2000b）、比克尔（Bücker）等（本卷）以及萨尼奥蒂（Sagnotti）等（2000，本卷），并标注于图1的A、B两列中。对于823.11~939.42 mbsf（终孔深度）的下伏泥盆纪地层（？），未实施相关调查工作。该钻孔的34个岩石地层学新生代单元中，共采集了28个单元的样品（附录1）。其中47件样品（8.97~349.78 mbsf）采自早渐新世地层段，另有51件样品（357.80~788.94 mbsf）采自早渐新世或晚始新世（？）地层。早渐新世地层段的采样间距平均约为5~9 m，早渐新世/晚始新世地层的采样间距则约为6~11 m。所有样品均采自厚度不超过1~2 cm的剖面段。样品均经拆分处理，其中一部分被用于黏土矿物（埃尔曼（Ehrmann），本卷）、重矿物（埃尔曼（Ehrmann），本卷）以及X射线衍射（X-ray diffraction, XRD）分析的矿物学特征研究（诺伊曼（Neumann）与埃尔曼（Ehrmann），本卷）。