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Author : Rachel A. Mills,Keith Harrison Publisher : Geological Society of London Page : 316 pages File Size : 48,9 Mb Release : 1998 Category : Science ISBN : 1862390231
The Sea Floor by Eugen Seibold,Wolfgang H. Berger Pdf
Contents: Preface. - Pioneers of Marine Geology. - Origin and Morphology of Ocean Basins. - Origin and Morphology of Ocean Margins. - Sources and Composition of Marine Sediments. - Effects of Waves and Currents. - Sea Level Processes and Effects of Sea Level Change. - Organisms on and in the Sea Floor. - Distribution, Activity, and Environmental Reconstruction. -Imprint of Climatic Zonation on Marine Sediments. - Patterns of Deep Sea Sedimentation. - Paleoceanography - the Deep Sea Record. - Resources from the Ocean Floor. - Epilog. - List of Books and Symposia. - Appendix. - Index.
Oceanic basalts are the most abundant rock type found at the earth's surface, and as such they have been the subject of considerable research, particularly since the concept of sea-floor spreading became widely accepted. This book provides a review of these rocks, first dicussing how we sample the ocean floor and what we know about the structure of the oceanic crust, followed by an overview of the various regional settings (Pacific crust, Atlantic crust, marginal basins, seamounts and islands) and finally examines the main processes (and their interactions) which prevail during the generation and emplacement of oceanic basalt magmas. This is a volume for geologists, geochemists and geophysicists and a source of reference for advanced undergraduate students and postgraduates in these disciplines.
Mantle and Lower Crust Exposed in Oceanic Ridges and in Ophiolites by European Union of Geosciences. Meeting Pdf
The processes involved in accretion taking place at oceanic ridges are approached here via petrological and structural analysis of oceanic rocks in present-day oceanic ridges, combined with similar studies based on ophiolites, and includes present cases of slow and fast oceanic spreading and inferred analogues in ophiolites. A complementary model study of cyclic oceanic activity reconciles the extreme cases of slowly and rapidly spreading ridges. In essence, based as it is on the analysis of `real rocks', this book on mantle-crust interactions reinforces the well-known contrast between processes taking place at slow and fast oceanic ridges. Audience: Contains valuable information for scientists interested in the nature and generation of the ocean floor in present-day oceanic ridges and in their ophiolite counterparts.
Geochemistry of Organic Matter in the Ocean by Evgenii A. Romankevich Pdf
My work Geochemistry oj organic matter in the ocean first appeared in Russian in 1978. Since then much progress has been made in the exploration of various forms of organic matter in the ocean: dissolved, colloidal, organic matter sus pended in particles and that contained in bottom sediments and in interstitial waters. The appropriate evidence is found in hundreds of articles and several re view works, such as Andersen (1977), Biogeochimie de [a matiere organique a ['interjace eau-sedimentmarine (1980), Duursma and Dawson (1981). A great amount of new information has been obtained in the Soviet Union's scientific institutions on the composition and distribution in natural waters and bottom sediments of organic matter and its separate components playing a crucial role in the formation of the chemical and biological structure of the ocean and its productivity, in the biogeochemistry of the elements and geochemistry of organic matter in the Earth's sedimentary cover. The areas of exploration have expanded over the past four-and-a-half years to embrace many new, little-known regions, including the Arctic seas. In contrast to the three preceeding decades, the research has been focused on investigating the existing forms, the distribution and accumulation of organic matter in near continental oceanic zones between land and sea, and in river estuaries.
This volume of Advanced Mineralogy encompasses six different areas having two features in common: they are related to one of the largest enterprises of the second half of this century; and represent the ultimate and final extension of the concept of mineral matter. - Understanding mineral matter in Space is one of the principal purposes of cosmic exploration. This includes the results of compa rative planetology, lunar epopee, sophisticated meteorite studies (now more than 500 meteorite minerals), discovery of the interstellar mineral dust forming some 60 trillion of earth masses in the Galaxy, and terrestrial impact crater studies. It is possible now to speak of mineralogy of the Universum, and the mineralogical type of the states of matter in the Universe. Direct samples of mantle xenoliths and ultrahigh pressure-tem perature experiments make it possible to consider the mineral ogical composition of the Earth as a whole, including the upper an lower mantle and the Earth's core. Deep ocean drilling programs, a scientific fleet of hundreds of vessels and several submersibles have brought about great dis coveries in the geology, metalogeny, and mineralogy of the ocean floor the largest part of the Earth's surface, in particular revealing new genetic, crystallochemical, and ore types of min eral formation.
The author participated in 38 sea going expeditions including the first manned-submersible project to explore the Mid-Atlantic Ridge. This book provides a comprehensive overview of the past 45 years of sea floor exploration. It summarizes the mineralogical and petrological composition of sea floor rocks, ocean floor volcanism in relation to the geological setting and the discovery of hydrothermal activity. In addition to learning about various scientific missions and their objectives, the reader is introduced to rift zones where the sea floor is being created, as well as to fracture zones, intraplate volcanoes, and the structural setting of subduction zones
The Geology of the Atlantic Ocean by Kenneth O. Emery,Elazar Uchupi Pdf
The explosion of interest, effort, and information about the ocean since about 1950 has produced many thousand scientific articles and many hun dred books. In fact, the outpouring has been so large that authors have been unable to read much of what has been published, so they have tended to concentrate their own work within smaller and smaller subfields of oceanog raphy. Summaries of information published in books have taken two main paths. One is the grouping of separately authored chapters into symposia type books, with their inevitable overlaps and gaps between chapters. The other is production of lightly researched books containing drawings and tables from previous pUblications, with due credit given but showing assem bly-line writing with little penetration of the unknown. Only a few books have combined new and previous data and thoughts into new maps and syntheses that relate the contributions of observed biological, chemical, geological, and physical processes to solve broad problems associated with the shape, composition, and history of the oceans. Such a broad synthesis is the objective of this book, in which we tried to bring together many of the pieces of research that were deemed to be of manageable size by their originators. The composite may form a sort of plateau above which later studies can rise, possibly benefited by our assem bly of data in the form of new maps and figures.
Oceanic basalts are the most abundant rock type found at the earth's surface, and as such they have been the subject of considerable research, particularly since the concept of sea-floor spreading became widely accepted. This book provides a review of these rocks, first dicussing how we sample the ocean floor and what we know about the structure of the oceanic crust, followed by an overview of the various regional settings (Pacific crust, Atlantic crust, marginal basins, seamounts and islands) and finally examines the main processes (and their interactions) which prevail during the generation and emplacement of oceanic basalt magmas. This is a volume for geologists, geochemists and geophysicists and a source of reference for advanced undergraduate students and postgraduates in these disciplines.