Part II considers the oceans as a reservoir, introducing water-column parameters before discussing water-column fluxes and the benthic boundary layer. Part III is devoted to the sediment reservoir. The topics covered include diagenesis, the major components of the sediments, and the processes controlling the geochemistry of oceanic deposit, which are discussed in terms of sediment-forming signals. Part IV offers an overview and synthesis of the integrated marine geochemical system. Since the publication of the first edition, there have been further significant advances in several areas of the subject. The revised text of this edition accommodates these advances, while still retaining the emphasis on identifying key processes operating within a 'unified ocean.' Special attention has been paid to fundamental conceptual changes, such as those related to trace metal speciation in sea water, hydrothermal activity, carbon dioxide and the importance of the oceans in world climate change, the transport of particulate material to the interior of the ocean, primary production and iron limitation, colloids, and the preservation/destruction of organic matter in marine sediments.rnIntermediate and advanced students with interests in chemical oceanography, marine geochemistry, marine biology and environmental chemistry will welcome this revised comprehensive text. Other students in the broader field of earth sciences will find it to be an essential reference source dealing with the interaction between the atmosphere, the ocean and the solid earth. * Incorporates all significant recent advances in the field. *'Unified system' approach to ocean chemistry. * Emphasises geological contexts, e.g. sediment diagenesis.

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