Download or read book Regional Geophysical Lineaments written by and published by . This book was released on 1989 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regional Geophysical Lineaments written by and published by . This book was released on 1989 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regional Geophysical Lineaments written by M. N. Qureshy and published by . This book was released on 1987 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysical Lineaments of Arizona written by L. K. Lepley and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photolineaments seen on satellite images are usually expressions of deep crustal ruptures. However, photolineaments are omnipresent and an independent expression of regional discontinuities is needed to help rank the photolineaments. Published gravity and magnetic contour maps of Arizona were analyzed to produce a single geophysical lineament map to indicate trends of regional basement structures. This map shows that the southwestern quarter of Arizona is dominated by a NNW-ENE orthogonal system whereas the remainder of the state is gridded by a NW-NE system. North-south systems are present throughout the state, as are EW lineaments. Arizona is transected by the WNW Texas Strand, but other shorter systems trending in the Texas direction are found throughout the state south of the Strand. The major lineament systems as seen on Landsat, gravity, and magnetic maps correlate reasonably well with known geothermal manifestations. Many other systems are Precambrian, Paleozoic, and/or Mesozoic in age but appear to control the location of Quaternary volcanic systems.
Download or read book Geophysical Lineaments of Arizona written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Photolineaments seen on satellite images are usually expressions of deep crustal ruptures. However, photolineaments are omnipresent and an independent expression of regional discontinuities is needed to help rank the photolineaments. Published gravity and magnetic contour maps of Arizona were analyzed to produce a single geophysical lineament map to indicate trends of regional basement structures. This map shows that the southwestern quarter of Arizona is dominated by a NNW-ENE orthogonal system whereas the remainder of the state is gridded by a NW-NE system. North-south systems are present throughout the state, as are EW lineaments. Arizona is transected by the WNW Texas Strand, but other shorter systems trending in the Texas direction are found throughout the state south of the Strand. The major lineament systems as seen on Landsat, gravity, and magnetic maps correlate reasonably well with known geothermal manifestations. Many other systems are Precambrian, Paleozoic, and/or Mesozoic in age but appear to control the location of Quaternary volcanic systems.
Download or read book Cenozoic Tectonics and Regional Geophysics of the Western Cordillera written by Robert Baer Smith and published by Geological Society of America. This book was released on 1978-06-01 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Continental Intraplate Earthquakes written by Seth Stein and published by Geological Society of America. This book was released on 2007-01-01 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume brings together a sampling of research addressing issues of continental intraplate earthquakes, including a core of papers from special sessions held at the spring 2004 Joint Assembly of the American and Canadian Geophysical Unions in Montreal. Papers address the broad related topics of the science, hazard, and policy issues of large continental intraplate earthquakes in a worldwide context. One group of papers addresses aspects of the primary scientific issue--where are these earthquakes and what causes them? Answering this question is crucial to determining whether they will continue there or migrate elsewhere. A second group of papers addresses the challenge of assessing the hazard posed by intraplate earthquakes. Although it may be a very long time before the scientific issues are resolved, the progress being made is helping attempts to estimate the probability, size, and shaking of future earthquakes, and the uncertainty of the results. A third group of papers explores the question of how society should mitigate the possible effects of future large continental intraplate earthquakes. Communities around the world face the challenge of deciding how to address this rare, but real, hazard, given the wide range of other societal needs. Continental intraplate earthquakes will remain a challenge to seismologists, earthquake engineers, policy makers, and the public for years to come, but significant progress toward understanding and addressing this challenge is now being made."--Publisher's website.
Download or read book Bouguer Gravity Regional and Residual Separation written by K. Mallick and published by Springer Science & Business Media. This book was released on 2012-03-05 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of regional-residual separation in potential field is age-old. Broadly, there are two techniques for regional-residual resolution, viz., graphical and analytical. Both the techniques have their own respective shortcomings. In this book, the authors have described the technique based on finite element method in which only eight (or twelve) nodal observed gravity values are used for the regional computation, thereby eliminating the possible contamination of anomalous fields and also the technique does not assume an explicit model and physical properties like density of rocks etc. in the regional computation. The book discusses the advantages of this technique viz., it is not site-specific; the computation is independent of any prior assumptions as to the form and depth of shallow or deeper structures; it can handle data distributed at random or on a regular grid on the map space; and the neighbouring surveys join smoothly. The book focuses on application of this new technique which has been demonstrated in different fields, such as hydrocarbon, minerals and groundwater, structural studies, earthquake and engineering studies and impact structures.
Download or read book Regional Geophysical Investigations in the Central Colorado Plateau written by James E. Case and published by . This book was released on 1973 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additional title page description: Gravity and magnetic anomalies indicate polygonization of the Precambrian basement complex and partial rejuvenation of basement structures during late Paleozoic and Laramide time.
Download or read book Correlation Between Landsat mapped Lineaments and Geophysical Data Within Selected Regions of the New Madrid Fault Zone written by Chris Lamm and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysical Lineaments and Other Continental scale Anomalies written by Helen A. Williams and published by . This book was released on 2008 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a regional scale, analysis of the distribution of metamorphic fabrics and shear zones in the Curnamona Province has enabled the deconstruction of a Cambrian fold arc that defines part of the eastern margin of Gondwana. This regional fold arc is interpreted to have formed along an irregular plate margin comprising a SE-convex rigid promontory of Precambrian basement that acted as an indentor during initial accretion of the Phanerozoic terranes at ca. 500 Ma. An early phase of dextral oblique-slip along shear zones in the south and west of the province indicates an initial WNW transport direction. As the arc was folded around the promontory, a slightly later phase of sinistral oblique-slip shearing was initiated along shear zones in the east, in response to deflection of the arc around the indentor. Constrained forward and inverse modeling of Bouguer gravity data is used to investigate a regional positive gravity anomaly that defines, but is not confined to, the eastern margin of the Curnamona Province. Best-fit results imply that the positive gravity values are sourced from a relatively dense terrane (+ 0.1-0.7 Mg m−³ with respect to surrounding crust) located at middle crustal levels (16-27 km depth), which is likely dismembered and offset into discrete slivers by late tectonism. Consideration of pre-1500 Ma plate reconstructions of the Australian continent correlates this terrane with an interpreted buried suture in the Mount Isa Inlier of northern Australia, where allochthonous crust was amalgamated to the Australian margin at ca. 2.2-1.85 Ga. Gravity forward and inverse modeling also delineates a shallow, west-dipping crustal-scale structure that possibly represents a primary boundary between Precambrian basement of Australia and the eastern fold belts accreted to the Precambrian margin during the Palaeozoic. This study shows that potential field lineaments are often the geophysical manifestation of steep, deep-seated terrane boundaries or sutures, which are repeatedly utilized as zones of strain localization during tectonic events that occur long after their inception. Through the analysis of their potential field signatures and variable surface expressions along strike, large-scale shear zones can be used to investigate the tectonic evolution of the continental lithosphere over long periods of geological history.
Download or read book Contemporary Lithospheric Motion Seismic Geology written by Ye Hong and published by CRC Press. This book was released on 2020-08-13 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the results on contemporary geodynamic model, crustal stress field, active faults, folds and volcanoes. It discusses the tectonophysical environments of earthquake generation and the methodology of earthquake prediction.
Download or read book New Publications of the U S Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1990 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1991 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the Geological Survey written by and published by . This book was released on 1971 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploring Space Exploring Earth written by Paul D. Lowman and published by Cambridge University Press. This book was released on 2002-08-15 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: An account of the impact of space exploration on our understanding of the geology and geophysics of Earth.
Download or read book Journal of Research of the U S Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1978 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific notes and summaries of investigations in geology, hydrology, and related fields.
