Magnetic Stratigraphy and Environmental Magnetism of Oceanic Sediments PDF Download
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Author: Helen F. Evans
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Based on the correlation of planktonic foraminifer datums to the magnetic stratigraphy at ODP Site 1208, a new planktonic foraminifer zonation for the northwest Pacific Ocean can be precisely correlated to polarity chrons and astronomically calibrated ages. Numerous paleomagnetic excursions are tentatively identified for the first time in Pacific sediments. Oxygen isotope records from the Late Miocene (9.3-11.2 Ma) at ODP Site 1092 (South Atlantic) allowed astronomic calibration of ages of reversal boundaries and three polarity excursions within Chron 5. This is the first time astronomically calibrated ages have been assigned to these polarity excursion chrons and indicate a duration for the excursions of 3-4 kyrs.
Author: Helen F. Evans
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Based on the correlation of planktonic foraminifer datums to the magnetic stratigraphy at ODP Site 1208, a new planktonic foraminifer zonation for the northwest Pacific Ocean can be precisely correlated to polarity chrons and astronomically calibrated ages. Numerous paleomagnetic excursions are tentatively identified for the first time in Pacific sediments. Oxygen isotope records from the Late Miocene (9.3-11.2 Ma) at ODP Site 1092 (South Atlantic) allowed astronomic calibration of ages of reversal boundaries and three polarity excursions within Chron 5. This is the first time astronomically calibrated ages have been assigned to these polarity excursion chrons and indicate a duration for the excursions of 3-4 kyrs.
Author: Meil D. Opdyke
Publisher: Academic Press
ISBN: 0080535720
Category : Science
Languages : en
Pages : 361
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Book Description
Magnetic Stratigraphy is the most comprehensive book written in the English language on the subject of magnetic polarity stratigraphy and time scales. This volume presents the entirety of the known geomagneticrecord, which now extends back about 300 million years. The book includes the results of current research on sea floor spreading, magnetic stratigraphy of the Pliocene and Pleistocene, and postulations on the Paleozoic. Also included are both historicalbackground and applications of magnetostratigraphy. Individual chapters on correlation are presented, using changes in magnetic properties and secular variation. Key Features* Discusses pioneering work in the use of marine sediments to investigate the Earths magnetic field* Serves as a guide for students wishing to begin studies in magnetostratigraphy* Provides a comprehensive guide to magnetic polarity stratigraphy including up-to-date geomagnetic polarity time scales* Correlates magnetic stratigraphics from marine and non-marine Cenozoic sequences* Details reversal history of the magnetic field for the last 350 million years* Discusses correlation using magnetic dipole intensity changes* Up-to-date correlation of biostratigraphy with magnetic stratigraphy through the late Jurassic
Author: Norman D. Watkins
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 510
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Book Description
Author: Barbara A. Maher
Publisher: Cambridge University Press
ISBN: 9781139429481
Category : Science
Languages : en
Pages : 412
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Book Description
The Quaternary has been a period of major climatic and environmental oscillations, and our knowledge of these past variations is important for our understanding of the possible impact of human activity on the present-day environment. First published in 1999, Quaternary Climates, Environments and Magnetism presents an account of the rich variety of uses of magnetic measurements in the environmental geosciences. Ten chapters by leading world authorities describe the highlights of environmental magnetic work during the last decade and identify directions for future research. Emphasis is placed on a multidisciplinary approach to achieve a more thorough understanding of the environmental processes involved. This volume will be of interest to research scientists from a wide range of disciplines working on Quaternary environments, including earth and environmental sciences, physical geology, geography and palaeoclimatology. It will also be valuable as a supplementary text for graduates and advanced undergraduates.
Author: Sara Satolli
Publisher: Frontiers Media SA
ISBN: 2889712656
Category : Science
Languages : en
Pages : 238
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Book Description
Author: Kenneth P. Kodama
Publisher: John Wiley & Sons
ISBN: 1118561287
Category : Science
Languages : en
Pages : 176
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Book Description
Rock magnetic cyclostratigraphy merges environmental magnetism, in which rock magnetic measurements are used to detect past environmental change, and cyclostratigraphy, in which cyclic variations of lithology or a sedimentary rock’s physical properties are related to astronomically-forced paleoclimate change. In addition to providing paleoclimate data, cyclostratigraphy can establish high-resolution chronostratigraphy for a sequence of sedimentary rocks, even at distant times in Earth’s history. This book provides an overview of concepts underlying these two techniques, recipes for the time series analysis of cyclostratigraphy, and case studies to illustrate the variety and breadth of problems addressed by rock magnetic cyclostratigraphy. New Analytical Methods in Earth and Environmental Science Because of the plethora of analytical techniques now available, and the acceleration of technological advance, many earth scientists find it difficult to know where to turn for reliable information on the latest tools at their disposal, and may lack the expertise to assess the relative strengths or limitations of a particular technique. This new series will address these difficulties by providing accessible introductions to important new techniques, lab and field protocols, suggestions for data handling and interpretation, and useful case studies. The series represents an invaluable and trusted source of information for researchers, advanced students and applied earth scientists wishing to familiarise themselves with emerging techniques in their field. All titles in this series are available in a variety of full-colour, searchable e-book formats.
Author: Luigi Jovane
Publisher: Geological Society of London
ISBN: 1862393540
Category : Science
Languages : en
Pages : 399
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Book Description
Magnetostratigraphy is best known as a technique that employs correlation among different stratigraphic sections using the magnetic directions defining geomagnetic polarity reversals as marker horizons. The ages of the polarity reversals provide common tie points among the sections, allowing accurate time correlation. Recently, studies of magnetic methods and the timing of geological processes have acquired a broader meaning, now referring to many types of magnetic measurements within a stratigraphic sequence. Many of these measurements provide correlation and age control not only for the older and younger boundaries of a polarity interval, but also within intervals. Thus, magnetostratigraphy no longer represents a dating tool based only on geomagnetic polarity reversals, but comprises a set of techniques that includes measurements of geomagnetic field parameters, environmental magnetism, rock-magnetic properties, radiometric dating and astronomically forced palaeoclimatic change recorded in sedimentary rocks, and key corrections to magnetic directions related to geodynamics, palaeocurrents, tectonics and diagenetic processes --
Author: David Gubbins
Publisher: Springer Science & Business Media
ISBN: 1402044232
Category : Science
Languages : en
Pages : 1061
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Book Description
This reference encompasses the fields of Geomagnetism and Paleomagnetism in a single volume. Both sciences have applications in navigation, in the search for minerals and hydrocarbons, in dating rock sequences, and in unraveling past geologic movements such as plate motions they have contributed to a better understanding of the Earth. The book describes in fine detail the current state of knowledge and provides an up-to-date synthesis of the most basic concepts. It is an indispensable working tool not only for geophysicists and geophysics students but also for geologists, physicists, atmospheric and environmental scientists, and engineers.
Author: Roy Thompson
Publisher: Springer Science & Business Media
ISBN: 9401180369
Category : Science
Languages : en
Pages : 453
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Book Description
The scientist will be forced, in the unenthusiastic words of one of my scientific colleagues, 'to slosh about in the primordial ooze known as inter-disciplinary studies'. John Passmore Man's responsibility for nature The present text has arisen from some thirteen years advances in our perception, appraisal and creative use of collaboration between the two authors. During that of order in natural systems. Out of this can come period, upwards of a dozen postgraduates in enhanced insight into processes, structures and Edinburgh, the New University of Ulster and Liver systems interactions on all temporal and spatial scales pool have been closely involved in exploring many of and at all integrative levels from subatomic to cosmic. the applications of magnetic measurements described In the environment, elements of order are often in the second half of the book. Much of the text is difficult to appraise and analyse, not only because of based on their work, both published and unpublished. intrinsic complexity, but as a consequence of our lack A great deal of the work summarised reflects extensive of techniques, instrumentation and suitable co-operation not only between the authors and among methodologies. Magnetic properties, whether natural their postgraduate groups, but also involving or induced, reflect forms of order which, in recent colleagues in geology, geography, ecology, hydrology, years, have become dramatically more accessible to a meteorology, glaciology, archaeology, limnology, growing range of instruments and techniques.
Author: Meil D. Opdyke
Publisher: Academic Press
ISBN: 9780125274708
Category : Science
Languages : en
Pages : 346
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Book Description
Magnetic Stratigraphy is the most comprehensive book written in the English language on the subject of magnetic polarity stratigraphy and time scales. This volume presents the entirety of the known geomagneticrecord, which now extends back about 300 million years. The book includes the results of current research on sea floor spreading, magnetic stratigraphy of the Pliocene and Pleistocene, and postulations on the Paleozoic. Also included are both historicalbackground and applications of magnetostratigraphy. Individual chapters on correlation are presented, using changes in magnetic properties and secular variation. Key Features * Discusses pioneering work in the use of marine sediments to investigate the Earths magnetic field * Serves as a guide for students wishing to begin studies in magnetostratigraphy * Provides a comprehensive guide to magnetic polarity stratigraphy including up-to-date geomagnetic polarity time scales * Correlates magnetic stratigraphics from marine and non-marine Cenozoic sequences * Details reversal history of the magnetic field for the last 350 million years * Discusses correlation using magnetic dipole intensity changes * Up-to-date correlation of biostratigraphy with magnetic stratigraphy through the late Jurassic
