Hydrothermal Fluids at the Mid-Atlantic Ridge (15°N and 4-11°S) as Media for the Transport of Energy and Mass from the Crust into the Hydro- and Biosphere

在R/V流星（15.01 -13.02.04）研究巡航M60/3评价项目中，将在3个热液活动区研究大西洋中脊15°N的热液活动及其与地质和生物环境的相互关系。部分工作将涉及构造活动的流体和矿物组成与基底岩石类型（玄武岩、橄榄岩）的依赖性。另一个重点将放在地球生物界面和流体中的化学物质（特别是硫物质和金属的氧化还原形态和络合）的研究上，这对生活在流体中的生物和来自流体的生物至关重要。此外，流体中的沸腾和相分离及其对矿物形成和相关生态系统的影响将被研究。主要目标区域是北纬14.45°的Logatchev油田，已知存在各种各样的喷射流体、矿物沉淀物和生物群落。

Within the evaluation project of research cruise M60/3 with R/V Meteor (15.01.-13.02.04), the hydrothermalism at 15°N of the Mid-Atlantic Ridge and its interrelation with the geological and biological environment will be investigated in three hydrothermally active areas. Part of the work will deal with the dependancy of the fluid and mineral composition of the tectonic activity and the type of basement rock (basalt, peridotite). Another main focus will be put on geo-bio interfaces and the investigation of chemical species (especially sulfur species and redox speciation and complexation of metals) in the fluids, which is vital for the organisms living in and from the fluids. Furthermore, boiling and phase separation in the fluids and its consequences for mineral formation and the associated ecosystems will be investigated. The main target area is the Logatchev field at 14.45°N where a large variety of emanating fluids, mineral precipitates and biotopes is known to exist.