Sediments and Sedimentation Regime in the Barents Sea


Book Description

Changes of environmental conditions in the Arctic will result in significant alterations of the dynamics of sedimentation processes in the region. Pronounced changes are expected to occur at the sources with marked effects on biogenic elements and contaminants. The Barents Sea, a shallow sea with a complex bathymetry, is the most productive of the Arctic shelf seas. In many respects the Barents Sea can be looked upon as an indicator of changes that threaten the Arctic. Ecological processes and physical oceanography are well studied there. This book presents general knowledge on marine bottom sediments in the Barents Sea. It concentrates on recent sedimentary processes as well as the quantity and quality of deposited material. Moreover, the sediment regime for the Barents Sea, material sources and transport pathways (bio-production and terrestrial sources) are shown. The book discusses the problem of inorganic and organic contaminants in the Barents Sea since arctic marine sediments are the final sink for numerous pollutants.




Sediment Provenance Studies in Hydrocarbon Exploration and Production


Book Description

Sediment provenance studies concern the origin, composition, transportation and deposition of detritus and therefore are an important part of understanding the links between basinal sedimentation, and hinterland tectonics and unroofing. Such studies can add value at many stages of hydrocarbon exploitation, from identifying regional-scale crustal affinities and sediment dispersal patterns during the earliest stages of exploration, to detailed correlation in producing reservoirs and understanding the impact of mineralogy on reservoir diagenesis. The volume showcases the wide variety of techniques available, using examples and applications from all aspects of sediment provenance research. The papers are organized into four sets around the following themes: • Overview: applications of provenance information in hydrocarbon reservoir sandstones • Provenance, diagenesis and reservoir quality • Provenance studies linking sediment to source • Looking forward: development of techniques and data handling This book is dedicated to the memory of Maria Mange and Robert A. Scott.




The Northern North Atlantic


Book Description

The northern North Atlantic is one of the regions most sensitive to past and present global changes. This book integrates the results of an interdisciplinary project studying the properties of the Greenland-Iceland-Norwegian Seas and the processes of pelagic and benthic particle formation, particle transport, and deposition in the deep-sea sediments. Ice-related and biogeochemical processes have been investigated to decipher the spatial and temporal variability of the production and fate of organic carbon in this region. Isotopic stratigraphy, microfossil assemblages and paleotemperatures are combined to reconstruct paleoceanographic conditions and to model past climatic changes in the Late Quaternary. The Greenland-Iceland-Norwegian Seas can now be considered one of the best studied subbasins of the world`s oceans.




Cyclic Development of Sedimentary Basins


Book Description

Cyclic Development of Sedimentary Basins presents the controversial subject of the cyclic phenomena in the earth's evolutionary history and its reflection in the development of sedimentary basins and its lithic infillings. Galactic rotation of celestial bodies causes cyclicity that is also reflected on a smaller scale in the proper Earth. This book presents the consequences of the earth's cyclic phenomena in the long-term cycles which affect the origin and further evolution of sedimentary basins.* Basin development* Cyclicity* Examples from the world







Sedimentation History in the Arctic Ocean and Subarctic Seas for the Last 130 kyr


Book Description

The book reflects the results of the study of sedimentation history, paleoclimatology, and paleoceanography of the Arctic and Subarctic during the last 130 ka. The main objects under consideration are marine basins of the West Subarctic (Iceland, Norwegian, and Greenland Seas), the Arctic Ocean (Barents, Pechora, Kara, Laptev, East Siberian, Chukchi Seas and deep-sea Arctic Ocean proper), East Subarctic (Bering and Okhotsk Seas). The modern environment and geological history of water- (ice-) sheds and marine basins have been studied for each region, using different sedimentological and geochemical proxies. Mainly results of the authors' own studies are represented, with special emphasis on glacial/interglacial variability and land-ocean interaction. The book is aimed at sedimentologists, quaternary and marine geologists, paleoclimatologists and paleoceanographers, as well as being of great interest to students in the related fields.




Coastal Upwelling Its Sediment Record


Book Description

NATO Advanced Research Institutes are designed to explore unre solved problems. By focusing complementary expertise from various disciplines onto one unifying theme, they approach old problems in new ways. In line with this goal of the NATO Science Committee, and with substantial support from the u.s. Office of Naval Research and the Seabed Assessment Program of the U. S. National Science Founda tion, such a Research Institute on the theme of Coastal Upwelling and Its Sediment Record was held september 1-4, 1981, in Vilamoura, Portugal. The theme implies a modification of uniformitarian thinking in earth science. Expectations were directed not so much towards find ing the key to the past as towards exploring the limits of interpret ing the past based on present upwelling oceanography. Coastal up welling and its imprint on sediments are particularly well-suited for such a scientific inquiry. The oceanic processes and conditions characteristic of upwelling are well understood and are a well packaged representation of ocean science that are familiar to geolo gists, just as the magnitude of bioproduction and sedimentation in upwelling regimes --among other biological and geological processes- have made oceanographers realize that the bottom has a feedback role for their models.







Deep-Sea Sediments


Book Description

'Deep-Sea Sediments' focuses on the sedimentary processes operating within the various modern and ancient deep-sea environments. The chapters track the way of sedimentary particles from continental erosion or production in the marine realm, to transport into the deep sea, to final deposition on the sea floor.




The Organic Carbon Cycle in the Arctic Ocean


Book Description

The flux, preservation, and accumulation of organic carbon in marine systems are controlled by various mechanisms including primary p- duction of the surface water, supply of terrigenous organic matter from the surrounding continents, biogeochemical processes in the water column and at the seafloor, and sedimentation rate. For the world's oceans, phytoplankton productivity is by far the largest organic carbon 9 source, estimated to be about 30 to 50 Gt (10 tonnes) per year (Berger et al. 1989; Hedges and Keil 1995). By comparison, rivers contribute -1 about 0. 15 to 0. 23 Gt y of particulate organi.