Download or read book Trace Element Studies of Metalliferous Sediments in Cores from the East Pacific Rise and Bauer Deep 10 S written by John William Kendrick and published by . This book was released on 1973 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major (Fe, Mn, Al) and minor (Cr, Mo, Pb, Zn, Cd) element analyses of metalliferous sediments in cores from the East Pacific Rise and Bauer Deep indicate that the Bauer Deep sediments are similar in chemistry and origin to metalliferous sediments of the East Pacific Rises. Fe, Pb, and Zn are strongly associated in both cores and are probably related to the hydrothermal processes which are postulated to occur on the East Pacific Rise. Incomplete Cd data suggest that Cd may also be released during hydrothermal leaching of basalt Mn may originate by precipitation from hydrothermal solutions or by normal authigenic precipitation from sea water. The similar accumulation rates of Mo in both cores, and poor correlation of Mo with Fe imply that Mo is being extracted from sea water. The low abundances of Cr and Al in metalliferous sediments suggest that detritus is a minor component of the sediments. Poorly crystalline smectites constitute a major mineralogical phase of metalliferous sediments. Chemical and mineralogical studies indicate that the smectite is an iron-rich montmorillonite, similar in composition to the bulk sediment. Information on sedimentation rates in the two cores indicate that most elements are accumulating faster on the East Pacific Rise than in the Bauer Deep. Accumulation rates of metals in the Bauer Deep have decreased up to the present and are currently similar to those for normal pelagic sediments. It is inferred that the sedimentation rates in the Bauer Deep are influenced by the proximity of the East Pacific Rise, It appears that sediments in the Bauer Deep are largely the product of hydrothermal processes on the East Pacific Rise, and that the precipitates are transported in suspension to the Bauer Deep. Authigenic precipitation of elements from sea water also occurs, having a stronger influence on the sediments as the precipitation of rise-crest material decreases away from the ridge.
Download or read book Nazca Plate written by LaVerne D. Kulm and published by Geological Society of America. This book was released on 1981-01-01 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: A volume dedicated to George P. Woollard.
Download or read book HIG Report written by and published by . This book was released on 1975 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metalliferous Sediments of the World Ocean written by Evgeny G. Gurvich and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic advances in understanding global tectonics have been made in the last half century and the information and specific data acquired on the floor of the World Ocean by the scientific community probably has exc- ded that available in all previous time. With the benefit of new technology and advanced concepts in the earth sciences extensive exploration of the deep seabed became possible, and has been carried out in many parts of the world. Many features have been recognized and data recorded that are vital for understanding the fundamental processes that shape the earth=s surface and control the habitable environment. The data collected to date on the o- an floor and its physical environment greatly exceeds our understanding and appreciation of their fundamental importance in the earth sciences, and our ability to apply this knowledge effectively in improving our way of life. With his extensive scientific knowledge and unique experience from - ny cruises in association with scientists throughout the world, Dr. Evgeny Gurvich has made an outstanding contribution in acquiring basic data on hydrothermal and sedimentation processes in the ocean, as well as in the synthesis of data and concepts available from cruise reports and an extensive literature.
Download or read book Initial Reports of the Deep Sea Drilling Project written by Scripps Institution of Oceanography and published by . This book was released on 1976 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Memoir written by and published by . This book was released on 1934 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Petroleum Source Rocks written by James Brooks and published by Blackwell Science. This book was released on 1987 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Ocean Drilling Program written by Scripps Institution of Oceanography and published by . This book was released on 1983 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reference written by and published by . This book was released on 1975 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book O S U Theses and Dissertations 1970 1977 written by Oregon State University and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Trace Element Distribution in a Sediment Core from the Pacific Ocean written by Sture Fritz Carlos Landergren and published by . This book was released on 1964 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samples from a sediment core taken during the Swedish Deep-Sea Expedition 1947-48 were analyzed for their content of some minor constituents. The core, No. 69, Sta. 102, in the collection of the Expedition, was obtained from 13 degrees 25' S, 149 degrees 30' W. It was analyzed earlier for the major constituents, the ferrides and boron. The lower part of the core (565-340 cm from the top) is a manganiferous marl ooze, and the upper part (336-6 cm) is a manganiferous-ferruginous clay ('red clay). The decrease in the carbonate content during sedimentation is rather sudden at about the 340-cm level; the corresponding increase in the phosphorus concentration is more gradual. The average relative concentration of silicate-oxide (sil), phosphorus (ap) and CaCO3 (car) and the concentrations of the constituents studied are given. The excess and deficiency in the concentrations, in comparison with the averages, are discussed and also the probable sources of elements. Four chief sources are responsible for the distribution pattern of the miror constituents studied: the fine fractions of weathering material from basic igneous rocks, authigenic mineral forming processes in the sea, biological processes, and precipitation of metal ions on the surface of colloidal particles. (Author).
Download or read book The Fate of Fossil Fuel CO2 in the Oceans written by Neil R. Andersen and published by Plenum Publishing Corporation. This book was released on 1977 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1977 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Initial Reports of the Deep Sea Drilling Project written by and published by . This book was released on 1984-06-02 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace Metal Geochemistry of Sediments Northeast Pacific Ocean written by B. D. Bornhold and published by . This book was released on 1981 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: It was the purpose of this study to undertake a reconnaissance examination of sediments in the vicinity of the northern Juan de Fuca and Explorer ridges, active spreading ridges in the northeast Pacific, in order to determine the nature and extent of any metalliferous sediments in this area of relatively high pelagic and hemipelagic sedimentation.
Download or read book Geological Society of America Bulletin written by Geological Society of America and published by . This book was released on 1980 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately.
Download or read book Oceanic Abstracts with Indexes written by and published by . This book was released on 1976 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
