Calcium carbonate content of ODP Hole 119-744B

High-resolution (5-cm interval) whole-core magnetic susceptibility measurements were made during ODP Leg 119 for Sites 744 and 745, located on the Southern Kerguelen Plateau. The magnetic log of Hole 744B is completed by carbonate analyses based on tightly spaced samples (7 samples per section; approximately 20-cm intervals). Initial results indicate an inverse relationship between susceptibility values and percent carbonate. The data sets represent a potential base for within-site hole cross-correlations and global paleoenvironmental studies.

针对坐落于南凯尔盖朗高原的744和745站位，大洋钻探计划（Ocean Drilling Program）第119航次开展了高分辨率（间隔5厘米）的全岩芯磁化率（whole-core magnetic susceptibility）测量工作。744B孔的磁测井（magnetic log）数据通过基于密间距采样（每个岩芯段采集7个样品，采样间隔约20厘米）的碳酸盐分析得以完善。初步研究结果显示，磁化率数值与碳酸盐百分含量之间呈负相关关系。本数据集可为站位内钻孔交叉对比以及全球古环境研究提供潜在的基础支撑。