The Alaskan Shelf
Hydrographic, Sedimentary, and Geochemical Environment
Published on 20. December 1979
Book
Hardback
498 pages
978-0-387-90397-2 (ISBN)
Description
From a general point of view the importance of striving to minimize envir- mental disturbances on the continental shelf cannot be overemphasized. Coastal areas are sites of population centers, navigation and recreation activities, and - source development, all of which contribute to environmental stress on the shelf. Proper management of the shelf for optimum use requires a thorough understanding of shelf processes. Complex problems, such as the influence of hydrodynamics on sediment dispersal, element differentiation and migration, physiochemical changes at the sediment water interface, the relationship - tween the pollutants and sediments, and the type of substrate with regard to benthic community and/or man-made structures require a multidisciplinary approach to their solution. The present study interrelates meteorologic, hyd- graphic, sedimentologic, and geochemical parameters to derme specific envir- ments on the Alaskan Shelf. These observations are then related to geologic principles in an effort to elucidate the sedimentary processes and elemental migration on the shelf. Attempts have also been made to relate the sediment texture to the geochem- try of the sediments. Obviously the chemistry is complicated as a result of b- genic contributions and variable provenance; however, to some extent elemental differentiation accompanies textural differentiation in sediments. The distribution of elements in various phases of crustal (source) rocks is gen- ally interpreted on the basis of crystallographic concepts, especially the concept of isomorphism.
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Content
1. Regional Setting.- Southeastern Alaska.- Northeastern Gulf of Alaska.- Central Gulf of Alaska.- Prince William Sound.- Port Valdez.- Northwestern Gulf of Alaska.- Cook inlet.- Bering Sea.- Chukchi Sea.- Beaufort Sea.- Sediment Parameters.- Textural.- Chemical Analysis.- 2. Southeastern Alaska.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Detrital Sediments.- Biogenic Sediments.- Geochemistry.- Sediment Source and Transport.- Summary.- References.- 3. Gulf of Alaska Shelf.- Geology.- Hydrology.- Hydrography.- References.- 4. Northeastern Gulf of Alaska Shelf.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Shelf.- Yakutat Bay.- Geochemistry.- Sediment Source and Transport.- References.- 5. Central Gulf of Alaska Shelf.- Geology.- Bathymetry.- Hydrology and Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 6. Prince William Sound.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 7. Port Valdez.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 8. Northwestern Gulf of Alaska Shelf.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 9. Cook Inlet.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 10. Bering Shelf.- Geology.- Bathymetry.- Hydrology.- Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- Sediment Transport in Suspension.- Ice-Rafted Sediments.- Bottom Sediment Transport.- References.- 11. Chukchi Sea Shelf.- Geology.- Bathymetry.- Hydrology and Hydrography.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- Sediments.- Geochemistry.- Sediment Source and Transport.- References.- 12. Beaufort Sea Shelf.- Geology.- Bathymetry.- Hydrology and Hydrography.- 13. Textural and Geochemical Evolution.- Textural Evolution.- Geochemical Evolution.- Chemical Transformation.- Major Elemental Migration.- Aluminum.- Iron.- Calcium.- Magnesium.- Sodium.- Potassium.- Titanium.- Manganese.- Trace Element Migration.- Barium.- Cobalt.- Chromium.- Copper.- Nickel.- Strontium.- Zinc.- References.- 14. Shelf Environments.- Factor Analysis.- Factor I.- Factor II.- Factor III.- Factor IV.- Factor V.- Factor VI.- References.- Author Index.