Analysis of Manganese nodules from Sonne cruises SO06/1 and /2, “Hawaii-Tahiti-Transect”, Teilprojekt ICIME

Manganese nodules research has focused on the area between the Clarion Fracture Zone to the North and the Clipperton Fracture Zone to the South where significant concentrations were found ni Ni-Cu. During the CCOP/SOPAC-IOC/IDOE International workshop on the "Geology Mineral Resources and Geophysics of the South Pacific" held in Fiji in September 1975, a working group on manganese nodules was formed by scientists from: CNEXO, Brest, the Institute of Oceanography, New Zealand, Imperial College, London and the Technical University of Aachen. A draft project was presented in July 1976 by J. Andrews, University of Hawaii and G. Pautot, Cnexo on a joint survey under the name of: "Hawaii-Tahiti Transect program". Further details were worked on in September 1976 during the International Geological Congress in Sydney with the participation of D. Cronan, Imperial College, Glasby, New Zealand Geological Survey and G. Friedrich, Aachen TU. The scientific final program was established in July 1977, planning on the participation of three research vessels: the Suroit (CNEXO), the Kana Keoki (U. of Hawaii) and the Sonne (Aachen TU). Several survey areas were selected across the Pacific Ocean (Areas A, B, C, D, E, F, G and H) with about the same crustal age (about 40 million years) and a similar water depths. Being near large fault zones, the ares would be adequate to study the influences of biological productivity, sedimentation rate and possibly volcanic activity on the formation and growth of manganese nodules. The influnece of volcanic activity study would particularly apply to area G being situated near the Marquesas Fracture Zone. The cruise from R/V Sonne started in August 1978 over areas C, D, F, G K. The R/V suroit conducted a similar expedition in 1979 over areas A, B, C, D, E, H and I. Others cruises were planned during the 1979-1980 for the R/V Kana Keoki. The present text relates the R/V Sonne Cruises SO-06/1 and SO-06/2 held within the frame work of this international cooperative project.

本锰结核（Manganese nodules）研究主要聚焦于北至克拉里昂断裂带（Clarion Fracture Zone）、南至克利珀顿断裂带（Clipperton Fracture Zone）的海域——该区域内已在镍铜（Ni-Cu）矿床中发现了显著的锰结核富集体。1975年9月，在斐济举办的CCOP/SOPAC-IOC/IDOE"南太平洋地质、矿产资源与地球物理学"国际研讨会上，来自以下机构的科学家组建了锰结核研究工作组：法国国家海洋开发中心（CNEXO，布雷斯特分部）、新西兰海洋研究所、伦敦帝国理工学院以及亚琛工业大学（Technische Universität Aachen）。1976年7月，夏威夷大学的J. Andrews与法国国家海洋开发中心的G. Pautot提交了一项联合勘探项目草案，项目名称为"夏威夷-塔希提断面计划（Hawaii-Tahiti Transect program）"。1976年9月，在悉尼举办的国际地质大会上，研究团队进一步完善了该项目细节，参与此次完善工作的科学家包括伦敦帝国理工学院的D. Cronan、新西兰地质调查局的Glasby以及亚琛工业大学的G. Friedrich。1977年7月，项目最终科学方案正式确立，计划动用3艘研究船（R/V, Research Vessel）开展勘探作业：分别为法国国家海洋开发中心的"苏鲁瓦号（Suroit）"、夏威夷大学的"卡纳·基奥基号（Kana Keoki）"以及亚琛工业大学的"松恩号（Sonne）"。研究团队在太平洋海域选定了多个勘探区域（A、B、C、D、E、F、G、H区），这些区域的地壳年龄均约为4000万年，且水深条件相近。由于邻近大型断裂带，这些区域足以用于研究生物生产力、沉积速率以及可能存在的火山活动对锰结核形成与生长的影响。其中，G区邻近马克萨斯断裂带（Marquesas Fracture Zone），尤其适合开展火山活动影响相关研究。1978年8月，"松恩号"研究船率先执行航次任务，勘探区域涵盖C、D、F、G、K区。1979年，"苏鲁瓦号"完成了类似的勘探作业，覆盖A、B、C、D、E、H、I区。此外，"卡纳·基奥基号"的勘探航次计划于1979-1980年间执行。本数据集详述了在本国际合作项目框架下，"松恩号"研究船执行的SO-06/1与SO-06/2航次的相关作业情况。