The deep basite-hyperbasite rocks wich are special features for the north part of the Mid-Atlantic Ridge (MAR) are observed. The hydrogeological structures of the MAR are distinguished.
Difference in structural position and influence of ores from different types of sediments on the geochemical characteristic of ores are observed. Results of end member composition correlation analysis show negative link of H 2 S with CH 4 и Н 2 .