Major and trace elemnte chemistry of ODP Hole 107-652A and 107-654A (Table 1)

Upper Miocene sediments from two holes located in the Sardinian continental margin were analyzed to provide compositional data suitable for depicting their depositional environment and for paleogeographic reconstructions.
Samples from Hole 652A are sterile, calcareous-sandy siltstones which are rather similar considering their compositional parameters. They are markedly different from the silty-sandstones of Hole 654A which also show a high variability between them, particularly in terms of fossil and glauconite content (Sample 107-654A-45R-06, 066-068 cm), or mineralogical and chemical composition (Sample 107-654A-47R-01, 076-078 cm).

针对撒丁岛大陆边缘两处钻孔采集的晚中新世（Upper Miocene）沉积物开展分析，以获取其组分数据，用于刻画其沉积环境并开展古地理重建工作。652A孔的样品均为无化石钙质砂质粉砂岩，就组分参数而言，各样品间较为相似。该孔沉积物与654A孔的粉砂质砂岩存在显著差异；654A孔的粉砂质砂岩自身亦存在较高的组分变异性，尤其体现在化石与海绿石（glauconite）含量（如样品107-654A-45R-06，066-068 cm），或矿物与化学成分（如样品107-654A-47R-01，076-078 cm）方面。