Download or read book GPS and Seismicity Constraints on the Current Tectonics of the Northern Canadian Cordillera written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents new precision Global Positioning System (GPS) data, new analyses of earthquake deformation rates, and geological analyses, which constrain current deformation in Yukon and adjacent areas of the northern Cordillera. The integration of these data with additional thermal constraints facilitates the large-scale characterization of intense deformation associated with the collision of the composite oceanic-continental Yakutat block with North America in the corner of the Gulf of Alaska. Two main approaches are used to constrain the first-order current tectonic deformation pattern: (1) high-precision continuous and campaign GPS measurements; (2) seismic deformation rates calculated using earthquake statistics from the seismicity catalogue. The oblique Yakutat-North America collision is mainly accommodated by thrust and strike-slip faulting in the Saint Elias region, but associated deformation extends a great distance (> 800 km) into the North America crust of eastern Alaska, Yukon and western Northwest Territories. The data indicate westward motion and counter-clockwise rotation of the southeastern Alaska forearc along the arc of the right-lateral Denali fault. Right-lateral transpression north of the Denali fault in Alaska is accommodated by clockwise rotation of a number of NE-trending crustal blocks bounded by sinistral strike-slip faults. To the northeast of the Yakutat collision, GPS data indicate a northeastward crustal motion across the Cordillera towards the eastern foldbelt. Earthquake mechanisms indicate strain accommodation mainly by thrusting in the Mackenzie Mountains and N-S dextral strike-slip faulting in the Richardson Mountains. It is likely that a small northward component of motion is transferred further north to the offshore Mackenzie Delta region, where infrequent large earthquakes may result, despite little historical seismicity. An additional study is presented on the use of quantitative estimates of coastal coseismic subsidence.
Download or read book GPS and Seismicity Constraints on the Current Tectonics of the Northern Canadian Cordillera written by Lucinda Jane Leonard and published by . This book was released on 2006 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book GPS and Seismicity Constraints on the Current Tectonics of the Northern Canadian Cordillera written by Lucinda Jane Leonard and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2007 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active Tectonics and Seismic Potential of Alaska written by Jeffrey T. Freymueller and published by American Geophysical Union. This book was released on 2008-01-14 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This multi-disciplinary monograph provides the first modern integrative summary of the most spectacular active tectonic systems in North America. Encompassing seismology, tectonics, geology, and geodesy, it includes papers that summarize the state of knowledge, including background material for those unfamiliar with the region; address global hypotheses using data from Alaska; and test important global hypotheses using data from this region. It is organized around four major themes: subduction and great earthquakes at the Aleutian Arc; the transition from strike-slip to collision tectonics in the Yakutat Block accretion; the Denali fault and related structures and their role in accommodating permanent deformation of the overriding plate, and; regional integration and large-scale models, and the use of data from Alaska to address important global questions and hypotheses."--Cover description.
Download or read book Dynamic Geology of the Northern Cordillera Alaska and Western Canada and Adjacent Marine Reas written by Thomas K. Bundtzen and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of E-Book is to clearly describe, explain, and illustrate the nature, origin, and geological evolution of the amazing mountain system that extends through the Northern Cordillera (Alaska and Western Canada) and the intriguing geology of adjacent marine areas. Other objectives are to describe geological hazards (i.e., volcanic, seismic and slope stability hazards) and geological resources (i.e., mineral and fossil fuel), and to describe the scientific, economic, and social significance of the earth for this region. A major aid to understanding the dynamic geology, hazards, and tectonics of the region is learning earth science terms. To enable learning, many terms in the E-Book are in an underlined blue font. These words have Hot Links to Wikipedia, the free encyclopedia, that provides excellent descriptions and definitions, and sometimes to other Web sites.
Download or read book Lithospheric Structure Across the Northern Canadian Cordillera from Teleseismic Receiver Functions written by Azadeh Ashoori Pareshkoohi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A major change in seismic velocities between Earth's crust and mantle is known as the Mohorovicic discontinuity (Moho). The depth of the Moho plays an important role in characterizing the overall structure of the crust and can be related to the tectonic setting of a region. Teleseismic P-wave receiver function techniques can provide estimates of the depth of the Moho and therefore crustal thickness under a broadband station. In this research we are interested in the structure of the crust and mantle across the northern Canadian cordillera, described by various tectonic settings. The teleseismic data recorded by broadband three-component seismic stations are used to perform receiver function analysis to determine the lateral variations of Moho depth under northern Canadian cordillera and map out the crustal thickness under the broadband stations. Based on visual inspection of receiver function results in the region, we find evidence of anisotropy or dipping reflectors in the crustal structure of the northern cordillera observed in back-azimuthal variations of transverse component receiver functions. We further provide a quantitative interpretation of receiver function in terms of anisotropy or dipping structure by decomposing the azimuthal variations of depth migrated receiver functions into back-azimuthal harmonics. This technique can be used to map out the orientation of anisotropy that may be related to cracks and/or rock texture caused by deformation. We resolve the Moho at an average depth of ~35 km along the western profile of the study area. Harmonic decomposition along the study area yields crustal anisotropy at depth 5-20 km, which does not extend in the lower crust. This can be the result of complex deformation at a detachment zone like a quasi-rigid displacement of the upper crust over a lower crust. The detected anisotropy over the study area is not coherent as the slow symmetry directions detected by harmonic decomposition are highly variable.
Download or read book E book on Dynamic Geology of the Northern Cordillera Alaska and Western Canada and Adjacent Marine Areas written by Thomas K. Bundtzen and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This DVD contains the E-Book on the Dynamic Geology of the Northern Cordillera (Alaska and Western Canada) and Adjacent Marine Areas. The E-Book explains the geology, tectonics, hazards, and resources of this vast region at the Scientific American level. The E-Book is intended for general education students in college, persons who have taken a couple (or more) geology or earth science courses, high school and college earth science teachers, and professional earth scientists. The E--Book has abundant Hot Links (hyperlinks) to Web sites and to chapters in the E-Book. Hot links to Web sites are in an underlined blue font, and Hot Links to other parts of the E-Book are in a red font. To understand these features, and to gain a general understanding of the E-Book, read the chapter on Introduction"--1_Readme First
Download or read book Ebook on the Dynamic Geology of the Northern Cordillera Alaska and Western Canada and Adjacent Marine Areas written by Thomas K. Bundtzen and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of E-Book is to clearly describe, explain, and illustrate the nature, origin, and geological evolution of the amazing mountain system that extends through the Northern Cordillera (Alaska and Western Canada) and the intriguing geology of adjacent marine areas. Other objectives are to describe geological hazards (i.e., volcanic, seismic and slope stability hazards) and geological resources (i.e., mineral and fossil fuel), and to describe the scientific, economic, and social significance of the earth for this region.
Download or read book Geomatica written by and published by . This book was released on 2006 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Research Part A written by Geological Survey of Canada and published by . This book was released on 1992 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers representing current geological research in British Columbia, Yukon Territory, and the Northwest Territories. Also included is a report on the project in comparative metallogenesis and tectonics of the U.S.S.R. Far East, Alaska, and the Canadian Cordillera. An author index is included.[$
Download or read book Tectonic and Geophysical Constraints on Magmatism in the Anahim Belt of British Columbia written by P. Metcalfe and published by . This book was released on 1984 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review presented in three parts: a review of the macroscopic tectonic and stratigraphic components of the Canadian Cordillera and their evolution; a review of geophysical studies in the Canadian Cordillera and adjacent regions and the constraints imposed thereby on the present-day structure of the crust and upper mantle in the region; and a review of existing and possible models for present day Cordilleran volcanism, with particular emphasis on that in the Anahim Belt.
Download or read book AGU 2004 Joint Assembly written by American Geophysical Union. Joint Assembly and published by . This book was released on 2004 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1950 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Living on an Active Earth written by National Research Council and published by National Academies Press. This book was released on 2003-09-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: The destructive force of earthquakes has stimulated human inquiry since ancient times, yet the scientific study of earthquakes is a surprisingly recent endeavor. Instrumental recordings of earthquakes were not made until the second half of the 19th century, and the primary mechanism for generating seismic waves was not identified until the beginning of the 20th century. From this recent start, a range of laboratory, field, and theoretical investigations have developed into a vigorous new discipline: the science of earthquakes. As a basic science, it provides a comprehensive understanding of earthquake behavior and related phenomena in the Earth and other terrestrial planets. As an applied science, it provides a knowledge base of great practical value for a global society whose infrastructure is built on the Earth's active crust. This book describes the growth and origins of earthquake science and identifies research and data collection efforts that will strengthen the scientific and social contributions of this exciting new discipline.
Download or read book Relative Motions Between Oceanic and Continental Plates in the Pacific Basin written by David C. Engebretson and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
