Annotated record of the detailed examination of Mn deposits observed in the Northern Atlantic Ocean by the RRS Discovery during Cruise 84

The cruise was devoted to two main objectives following along projects started in previous years, and to several subsidiary objectives: (1) the study of tectonic processes in mid-ocean ridges and associated fracture zones, (2) the evoluion of King's Trough, (3) the sediment transport mechanism of Rockall Trough.From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

本航次围绕既往年度启动的两项核心研究目标，以及多项辅助研究目标展开：(1) 洋中脊及其伴生断裂带的构造过程研究；(2) 金斯海槽（King's Trough）的演化过程；(3) 罗卡尔海槽（Rockall Trough）的沉积物输运机制。

1983年至1989年间，美国国家海洋和大气管理局国家环境信息中心（NOAA-NCEI）从期刊论文、技术报告及其他机构的未公开资料中，汇编形成了NOAA-MMS海洋矿物地球化学数据库。在当时，该数据集是全球范围内规模最广的铁锰矿床相关数据汇编成果。该数据库最初以与现行标准不兼容的专有格式发布，后由阿尔弗雷德·魏格纳研究所（AWI）与美国国家海洋和大气管理局（NOAA）共同商定，将这批历史遗留数据转录至PANGAEA数据库。此次数据迁移工作还针对可获取的原始资料开展了严谨核查，并补充编码了NOAA-MMS数据库未收录的辅助信息（如样品描述、分析方法等）。