Publication Date:
2023-08-28
Description:
Regional variations in abundance, morphology, and chemical composition of Fe-Mn nodules have a zonal character. Due to circumcontinental zonality of terrigenous sedimentation the main mass of the nodules occurs in the pelagic part of the ocean, in areas of minimal sedimentation rates. In spatial variations in morphology and chemical composition of the nodules the latitudinal zonality is very clear and associated with latitudinal changes in facial conditions of sedimentation. Elevated contents of Mn, Ni, and Cu and of Mn/Fe ratio occur in nodules from the radiolarian belt. Changes of chemical composition of the nodules with depth (vertical zonality of mineralization) are confirmed. Local variations in abundance, morphology and chemical composition of the nodules are caused by ruggedness of relief and depth variations, variations in sedimentation rate, age of ore formation, intensity of diagenetic redistribution of metals.
Keywords:
Archive of Ocean Data; ARCOD; Bottom trawl; BT; Dredge; DRG; East Indian Ocean; GC; Grab; GRAB; Gravity corer; Indian Ocean; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; SIGSBY; Sigsby trawl; VITYAZ; Vityaz (ex-Mars); VITYAZ6729; VITYAZ6731-5; VITYAZ6731-6; VITYAZ6732-1; VITYAZ6734; VITYAZ6736-1; VITYAZ6737-1; VITYAZ6742-11; VITYAZ6742-13; VITYAZ6742-15; VITYAZ6742-2; VITYAZ6742-21; VITYAZ6742-22; VITYAZ6742-4; VITYAZ6742-6; VITYAZ6742-8; VITYAZ6742-9; VITYAZ6744-1; VITYAZ6744-2; VITYAZ6744-37; VITYAZ6744-39; VITYAZ6744-8; VITYAZ6746-1; VITYAZ6749-1; VITYAZ6751-2; VITYAZ6753-1; VITYAZ6754-1; VITYAZ6754-10; VITYAZ6754-11; VITYAZ6754-12; VITYAZ6754-15; VITYAZ6754-16; VITYAZ6754-4; VITYAZ6754-5; VITYAZ6754-6; VITYAZ6754-7; VITYAZ6755; VITYAZ7411-1; VITYAZ7411-2; VITYAZ7413; VITYAZ7414-1; VITYAZ7430; VITYAZ7446
Type:
Dataset
Format:
application/zip, 4 datasets
