Download or read book The Rock magnetic Properties Grain Size and Mineral Composition of Windborne Dust and Sediment in the North Pacific Ocean written by Eve Maureen Arnold and published by . This book was released on 1996 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock and Mineral Magnetism written by W. O'Reilly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past two decades have witnessed a revolution in the earth sciences. The quantitative, instrument-based measurements and physical models of. geophysics, together with advances in technology, have radically transformed the way in which the Earth, and especially its crust, is described. The study of the magnetism of the rocks of the Earth's crust has played a major part in this transformation. Rocks, or more specifically their constituent magnetic minerals, can be regarded as a measuring instrument provided by nature, which can be employed in the service of the earth sciences. Thus magnetic minerals are a recording magnetometer; a goniometer or protractor, recording the directions of flows, fields and forces; a clock; a recording thermometer; a position recorder; astrain gauge; an instrument for geo logical surveying; a tracer in climatology and hydrology; a tool in petrology. No instrument is linear, or free from noise and systematic errors, and the performance of nature's instrument must be assessed and certified. This has been the task of the research worker in rock and mineral magnetism.
Download or read book Germanium silicon and Trace Element Geochemistry of Silicate Weathering and Mineral Aerosol Deposition written by Andrew Charles Kurtz and published by . This book was released on 2000 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Magnetism written by David J. Dunlop and published by Cambridge University Press. This book was released on 1997 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive treatment of fine particle magnetism and the magnetic properties of rocks. Starting from atomic magnetism and magneotistic principles, the authors explain why domains and micromagnetic structures form in ferrmagnetic crystals and how these lead to magnetic memory in the form of thermal, chemical and other remanent magnetizations. This book will be of value to graduate students and researchers in geophysics and geology, particularly in palemagnetism and rock magnetism, as well as physicists and electrical engineers interested in fine-particle magnetism and magnetic recording.
Download or read book Curricula in the Atmospheric Oceanic Hydrologic and Related Sciences written by and published by . This book was released on 1998 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical Principles of Rock Magnetism written by Frank Stacey and published by Elsevier. This book was released on 2012-12-02 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in Solid Earth Geophysics 5: The Physical Principles of Rock Magnetism explores the physical principles of rock magnetism, with emphasis on the properties of finely divided magnetic materials. It discusses the origin and stability of rock magnetizations, the role of remanent magnetism in interpreting magnetic surveys, magnetic anisotropy as an indicator of rock fabric, and the relationship between piezomagnetic changes and seismic activity. Organized into 13 chapters, this volume discusses the properties of solids, magnetite and hematite grains, and rocks with magnetite grains. It also explains various theories and equations in studying rock magnetism. Different types of magnetization are discussed, including their occurrence, significance, and effects. Some of the types include depositional and chemical remanent and thermoremanent magnetization. In addition, this book explains the thermal activation and Piezomagnetic effects, as well as the reversals of remanent magnetism. This reference contains appendices with tables of relevant functions, such as Langevin Function. This book is a valuable source of information for physicists and geologists.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods in Rock Magnetism and Palaeomagnetism written by D. Collinson and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last 30 years the study of the magnetic properties of rocks and minerals has substantially contributed to several fields of science. Perhaps the best known and most significant advances have resulted from the study of palaeomagnetism, which led to quantitative confirmation of continental drift and polar wandering through interpretation of the direction of remanent magnetism observed in rocks of different ages from different continents. Palaeomagnetism has also, through observations of reversals of magnetiz ation, ancient secular variation and ancient field intensities provided data relevant to the origin of the geomagnetic field, and other investigations have contributed significantly to large-scale and local geological studies, the dating of archaeological events and artefacts and more recently to lunar and meteoritic studies. Rock and mineral magnetism has proved to be an interesting study in its own right through the complex magnetic properties and interactions observed in the iron-titanium oxide and iron sulphide minerals, as well as contributing to our understanding of remanent magnetism and magnetization processes in rocks. Simultaneous with the development of these studies has been the develop ment of instruments and techniques for the wide range of investigations involved.
Download or read book Anomalous Magnetic Field of the World Ocean written by Alexander M. Gorodnitsky and published by CRC Press. This book was released on 1994-10-12 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the anomalous magnetic field of the ocean and its connection with geological structure, tectonic evolution of the oceanic lithosphere, and magnetic properties of different rock types in the oceanic crust. The book describes new instruments and techniques of gradient magnetic measurements with three sensors, as well as the new technique of processing and interpretating hydromagnetic data on the basis of adoptive filtration and reparametrization. The text provides unique data of geomagnetic surveys carried out by Russian research vessels in different regions of the World Ocean, including submersible apparatus and ingenious theoretical and experimental technology of the magnetic modeling and investigations of the nature of magnetic anomalies. The results of systems analysis of geochemical content and composition during the mid-oceanic ridge basalt are presented.
Download or read book The Rock Magnetic Record Across the 12 9 Ka Younger Dryas Boundary written by Marcy D. Nadel and published by . This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The onset of the Younger Dryas (YD) climactic event at ~12.9 ka coincides with the extinction of Pleistocene megafauna and drastic changes in human subsistence patterns in the Americas, changes whose cause/s remain a geologic mystery. Firestone et al. (2007) proposed a bolide impact to explain these dramatic environmental changes, citing elevated concentrations of magnetic spherules (MSp) picked from magnetic extracts as key evidence. This study uses a comprehensive suite of highly sensitive rock magnetic measurements to evaluate continuously sampled soil profiles from two well-dated early human archeological sites that span the YD boundary and investigate magnetic evidence for an impact. Rock magnetic techniques are one of the most sensitive means for detecting subtle changes in grain size, sedimentation rate, or pedogenic development. We expect that the environmental changes (wildfires, vegetation loss, erosion/deposition rates) associated with an impact or airburst event of this magnitude would be preserved in the magnetic record. Hysteresis loops and frequency dependence of susceptibility measurements are used to evaluate the concentration, grain size, and composition of magnetic material, while low-temperature magnetic properties, SEM images and EDS spectra speak to magnetic mineralogy. We observe gradual decreases in the amount of magnetic material and shifts towards smaller, more magnetically hard (high-coercivity) minerals with depth at both sites. These trends are consistent with a history of uninterrupted soil development rather than a catastrophic impact event. Magnetic extracts were also prepared from bulk soil collected at one site, following the methods of previous investigators in order to explore the possibility of sampling bias during magnetic extraction. Extracted magnetic grains are larger and more magnetically hard than in-situ magnetic material, and are predominantly detrital ilmenites with varying degrees of alteration to high-titanium products. Many grains exhibit hematite exolution lamellae, which gives rise to lamellar magnetic coupling. Pedogenesis dominates the magnetic properties at both sites, producing profiles with near-surface enrichment of fine-grained magnetically hard material that is progressively oxidized with depth.
Download or read book Magnetic Anisotropy of Rocks written by D. Tarling and published by Springer Science & Business Media. This book was released on 1993-05-31 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the background, physical instrumentation and geological aspects behind any study of the magnetic anisotropy of a rock in a comprehensive and practical way. After studying this book, readers in the geosciences will be encouraged to use this simple, rapid and inexpensive technique in their studies of rocks.
Download or read book The magnetic properties of minerals found in certain igneous and sedimentary rocks written by John Harvey Leng and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Investigations of the North Pacific written by James D. Hays and published by . This book was released on 1970 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remagnetization and Chemical Alteration of Sedimentary Rocks written by Richard Douglas Elmore and published by Geological Society of London. This book was released on 2012 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Magnetic Properties of Pleistocene Marine Sediments of the U S Middle Atlantic Margin and the Japan Sea written by Michael Urbat and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Magnetism written by Takeshi Nagata and published by . This book was released on 1961 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
