Microscopic, elemental analysis, total organic carbon and Rock-Eval pyrolysis at DSDP Holes 64-479 and 64-480

Geochemical analyses were carried out on Quaternary sediments from cores at Sites 479 and 480. The amount of organic matter indicates that these sediments have good to very good source-rock potential. Rock-Eval pyrolysis and microscopic examination show that many of the samples contain thermally immature, oil-prone, marine organic matter. Preliminary results show that Rock-Eval pyrolysis can distinguish oxic (bioturbated) and anoxic (laminated) organic facies in the cores. […]对479、480站位岩芯采集的第四纪沉积物开展了地球化学分析。有机质丰度表明，该类沉积物具备良好至极佳的烃源岩潜力。Rock-Eval热解（Rock-Eval pyrolysis）与显微镜检结果显示，多数样品含有热未成熟的生油型海相有机质。初步研究结果表明，Rock-Eval热解可区分岩芯中的氧化环境（生物扰动型）与缺氧环境（纹层状）有机相（organic facies）。[…]