(Table 1) Magnetic susceptibility, lithologic composition and stable isotope record for ODP Hole 132-810C
收藏Mendeley Data2023-06-10 更新2024-06-27 收录
下载链接:
https://doi.pangaea.de/10.1594/PANGAEA.785459
下载链接
链接失效反馈官方服务:
资源简介:
Site 810 was drilled atop Shatsky Rise during Ocean Drilling Program (ODP) Leg 132. The principal objective at Site 810 was to drill interbedded cherts and chalks of Mesozoic age using the diamond coring system (DCS). The objective was not achieved because of difficulties in setting up the reentry cone on the seafloor; however, a shortened section of Cretaceous-Cenozoic nannofossil ooze was recovered with the advanced piston corer (APC). Although the section is interrupted by hiatuses, the upper 50 m carry detailed information relating to biogenic productivity, water chemistry, and eolian input during the Pliocene and Pleistocene.
Four holes were drilled at Site 810. Hole 810A consists of a single mud-line core for an ongoing ODP geriatric study. The second hole (Hole 810B) was washed to 60 mbsf (without core recovery) to provide information required for setting the 16-in. casing attached to the reentry cone. Hole 810C penetrated 136.1 mbsf, mostly with the APC, with a total recovery of 143.81 m of nannofossil ooze. A reentry cone was placed over Hole 810D but no casing was successfully suspended in the hole and no sediment was cored.
This data report presents the results of shore-based high-resolution analyses of carbonate and oxygen isotopic variations in the upper 50 m of the section at Site 810 and compares these variations with the shipboard determinations of magnetic susceptibility and GRAPE bulk density from the multisensor track.
大洋钻探计划(Ocean Drilling Program, ODP)第132航次在沙茨基海隆(Shatsky Rise)顶部钻探了810站位。810站位的核心钻探目标是利用金刚石取心系统(Diamond Coring System, DCS)钻取中生界互层状燧石与白垩岩。该目标未能实现,原因是在海底布设重返锥时遭遇技术难题;但通过先进活塞取心器(Advanced Piston Corer, APC)获取了一段缩短的白垩系-新生界超微化石软泥序列。尽管该岩心序列被沉积间断所分隔,其上部50米地层蕴含了上新世(Pliocene)与更新世(Pleistocene)时期有关生物生产力、水体化学及风尘输入的详尽研究信息。
810站位共布设4个钻孔。810A孔仅钻取了一根泥线岩心,用于正在推进的大洋钻探计划老年学研究。第二个钻孔(810B孔)被冲洗至海底以下60米(未获取岩心),以获取布设连接重返锥的16英寸套管所需的技术参数。810C孔进尺达海底以下136.1米,主要采用先进活塞取心器(APC)取心,累计回收超微化石软泥岩心总长度143.81米。科研人员在810D孔上方布设了重返锥,但未能成功悬挂套管,亦未获取任何沉积岩心。
本数据报告呈现了对810站位上部50米地层中碳酸盐与氧同位素变化开展的岸基高分辨率分析结果,并将该变化结果与多传感器轨道(multisensor track)获取的船载磁化率及GRAPE体积密度实测数据进行了对比。
创建时间:
2023-06-10



