Download or read book Implications of Thrust and Detachment Faulting for the Structural Geology of the Thermo Hot Springs KGRA Utah written by Ronald L. Bruhn and published by Utah Geological Survey. This book was released on 2012 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 23 page report is an initial investigation into the role that low-angle faulting may play in the formation of the Thermo Hot Springs Known Geothermal Area (KGRA), within the Sevier geothermal anomaly of southwestern Utah. The stratigraphy and structures exposed in the southern mineral mountains are used as an analog for studying the subsurface stratigraphy and the detachment fault within the Thermo Hot Springs KGRA.
Download or read book Current Topics in Structural Geology written by P. L. Hancock and published by Elsevier. This book was released on 2013-08-29 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Topics in Structural Geology is a collection of invited papers on particular topics of interest in structural geology, from field-based problems on the scale of terranes to microstructures in nature and experiment. Contributors also explore earthquake faulting; S-C mylonites; tectonics and hydrogeology of accretionary prisms; deformation mechanisms; transparent polycrystals; shape and lattice preferred orientations; and mushroom-shaped diapirs. This text is comprised of 13 chapters; the first of which introduces the reader to shallow crustal earthquakes and the structural geology of fault zones. The first chapter also emphasizes the seismogenic regime, strike-slip earthquake rupture processes, structural questions posed by seismology, and mesothermal gold-quartz lodes hosted in steeply inclined shear zones of mixed 'brittle-ductile' character. Discussion then turns to normal faulting in the upper continental crust, along with the application of a method based primarily on fault slip data analysis to determine paleostress in terms of orientation and magnitude. The mechanical behavior and deformation textures of simulated halite shear zones are considered, with special regard to the internal structures of S-C mylonites and their mechanical implications. The remaining chapters examine the role of decollement zone in the tectonics and hydrogeology of accretionary prisms; synkinematic microscopy of transparent polycrystals; and the origin of metamorphic core complexes and detachment faults formed during Tertiary continental extension in the northern Colorado River region. This book is intended primarily for students and practitioners of structural geology.
Download or read book Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona written by William R. Dickinson and published by Geological Society of America. This book was released on 1991 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-Tertiary strata exposed as tilted homoclines along the flanks of the San Pedro trough and across broad uplands north of the Catalina core complex are assigned to the following formations, each of which includes informal local members and facies: (a) Mineta Formation, mid-Oligocene redbeds including both conglomeratic fluvial and finer-grained lacustrine deposits; (b) Galiuro Volcanics, including lavas and domes, air-fall and ash-flow tuffs, and intercalated volcaniclastic strata of late Oligocene to earliest Miocene age; (c) Cloudburst Formation, also of late Oligocene and earliest Miocene age but including a sedimentary upper member of conglomeratic strata as well as a volcanic lower member correlative with part of the Galiuro Volcanics; and (d) San Manuel Formation, composed of lower Miocene alluvial fan and braidplain deposits that display contrasting clast assemblages in different areas of exposure. Generally correlative Oligocene-Miocene strata exposed south of the Catalina core complex are assigned to the Pantano Formation, which contains similar lithologic components. Less-deformed Neogene strata of post-mid-Miocene basin fill are assigned to the Quiburis Formation along the San Pedro trough, but stratigraphic equivalents elsewhere lack adequate nomenclature. High benchlands mantled by paleosols mark the highest levels of Neogene aggradation. Successive stages of subsequent erosional dissection are recorded by multiple terrace levels incised into basin fill. Key exposures of syntectonic mid-Tertiary sedimentary sequences in several local subareas reveal typical structural and stratigraphic relationships. Multiple fault blocks expose pre-Tertiary bedrock overlain by tilted mid-Tertiary strata confined to intervening half-grabens. Bounding syndepositional faults dip southwest and associated homoclines dip northeast. Fanning dips and buttress unconformities reflect progressive tilt and burial of eroding fault blocks. Dips of block-bounding faults are inversely proportional to the ages of the faults. Steeper dips for younger faults suggest either progressive erosion of successive listric faults or progressive rotation of successive planar faults. Uniformly moderate to steep dihedral angles between fault surfaces and offset homoclinal bedding imply that the faults dipped more steeply near the surface when syntectonic mid-Tertiary strata were subhorizontal. Although the inference of listric faulting best links apparent strands of the Catalina detachment system, the alternate interpretation of rotational normal faulting is compatible with local structural relationships including tilt of porphyry copper orebodies. Within the San Pedro trough, multiple homo clines of mid-Tertiary strata are exposed locally in tilt-blocks exhumed by Neogene erosion from beneath nearly flat-lying basin fill of the Quiburis Formation. Faults bounding the mid-Tertiary exposures include backtilted strands of the Catalina detachment system, somewhat younger listric or rotational normal faults, and steeper basin-range normal faults that display offsets both synthetic and antithetic to the flanks of the San Petro trough. In Cienega Gap, flanking the Tucson Basin, multiple tilt-blocks of the Pantano Formation form part of the upper plate of the Catalina detachment system. Initial construction of alluvial fans by generally westward paleoflow was followed by ponding of lacustrine environments along the foot of secondary breakaway scarps that also generated massive megabreccia deposits. In summary, syntectonic Oligocene to Miocene sedimentation succeeded a prominent pulse of polymodal mid-Tertiary volcanism and was coeval with mylonitic deformation and detachment faulting along the flank of the Catalina core complex. The headwall rupture for the detachment system migrated westward from an initial position along the range front of the Galiuro Mountains. After mid-Miocene time, accumulation and subsequent dissection of essentially undeformed basin fill was accompanied by basin-range block faulting. The most challenging structural issue is whether fault strands of the Catalina detachment system are interconnected or are disconnected rotational segments.
Download or read book Interior Western United States written by Joel L. Pederson and published by Geological Society of America. This book was released on 2005-01-01 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysics written by Liu Guangding and published by CRC Press. This book was released on 2020-04-22 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to map the Precambrian basement, to recognize the paleo-suture zones, and to determine the nature of ancient tectonic regime. It proposes the new concepts of the basement tectonic framework and major tectonic features.
Download or read book Extensional Tectonics Regional scale processes written by Robert E. Holdsworth and published by Geological Society of London. This book was released on 2002 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cenozoic Basins of the Death Valley Region written by Lauren Albert Wright and published by Geological Society of America. This book was released on 1999-01-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fault related Rocks written by Arthur W. Snoke and published by Princeton University Press. This book was released on 1998 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a richly illustrated reference book that provides a unique, comprehensive, and up-to-date survey of the rocks and structures of fault and shear zones. These zones are fundamental geologic structures in the Earth's crust. Their rigorous analysis is crucial to understanding the kinematics and dynamics of the continental and oceanic crust, the nature of earthquakes, and the formation of gold and hydrocarbon deposits. To document the variety of fault-related rocks, the book presents more than six hundred photographs of structures ranging in scale from outcrop to submicroscopic. These are accompanied by detailed explanations, often including geologic maps and cross sections, contributed by over 125 geoscientists from around the world. The book opens with an extensive introduction by Arthur W. Snoke and Jan Tullis that is itself a major contribution to the field. Fault-related rocks and their origins have long been controversial and subject to inconsistent terminology. Snoke and Tullis address these problems by presenting the currently accepted ideas in the field, focusing on deformation mechanisms and conceptual models for fault and shear zones. They define common terminology and classifications and present a list of important questions for future research. In the main, photographic part of the book, the editors divide the contributions into three broad categories, covering brittle behavior, semi-brittle behavior, and ductile behavior. Under these headings, there are contributions on dozens of subtopics with photographs from localities around the world, including several "type" areas. The book is an unrivaled source of information about fault-related rocks and will be important reading for a broad range of earth scientists, including structural geologists, petrologists, geophysicists, and environmental specialists. Originally published in 1998. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book Structural Geology of Rocks and Regions written by George H. Davis and published by John Wiley & Sons. This book was released on 2011-12-06 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relates the physical and geometric elegance of geologic structures within the Earth's crust and the ways in which these structures reflect the nature and origin of crystal deformation through time. The main thrust is on applications in regional tectonics, exploration geology, active tectonics and geohydrology. Techniques, experiments, and calculations are described in detail, with the purpose of offering active participation and discovery through laboratory and field work.
Download or read book Site Characterization Progress Report written by and published by . This book was released on 1991 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Excursions in Geology and History written by Frank James Pazzaglia and published by Geological Society of America. This book was released on 2006-01-01 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Open file Report written by and published by . This book was released on 1995 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Resources of the Cactus Plain and East Cactus Plain Wilderness Study Areas La Paz County Arizona written by Richard M. Tosdal and published by . This book was released on 1990 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plate Tectonics Ophiolites and Societal Significance of Geology written by John Wakabayashi and published by Geological Society of America. This book was released on 2021-09-24 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume honors Eldridge Moores, one of the most accomplished geologists of his generation. The volume starts with a summary of Moores' achievements, along with personal dedications and memories from people who knew him. Leading off the volume's 12 chapters of original scientific contributions is Moores' last published paper that presents an example of the Historical Contingency concept, which suggested that earlier subduction history may result in supra-subduction zone geochemical signatures for some magmas formed in non-subduction environments. Other chapters highlight the societal significance of geology, the petrogenesis of ophiolites, subduction zone processes, orogenic belt evolution, and other topics, covering the globe and intersecting with Moores' interests and influences"--
Download or read book Heterogeneous Neogene Strain and Its Bearing on Horizontal Extension and Horizontal and Vertical Contraction at the Margin of the Extensional Orogen Mormon Mountains Area Nevada and Utah written by Roy Ernest Anderson and published by . This book was released on 1993 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: New evidence for extension-normal contraction.
Download or read book Regional Geology and Tectonics written by Domenico Chiarella and published by Elsevier. This book was released on 2024-04-19 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regional Geology and Tectonics: Volume 2: Phanerozoic Rift Systems and Sedimentary Basins, Second Edition, is the second volume in a three-volume series covering Phanerozoic regional geology and tectonics. Experience in analyzing and assessing rifts - locations where the Earth’s outer shell and crust have been stretched over time by seismic activity - is critical for exploration geologists in identifying Earth’s most lucrative hydrocarbon locations in which extraction is both efficient and safe. Vast compilations of related industry data present regional seismic lines and cross sections, and summaries of analogue and theoretical models are provided as an essential backdrop to the structure and stratigraphy of various geological settings. The new edition of Regional Geology and Tectonics: Volume 2: Phanerozoic Rift Systems and Sedimentary Basins features updated summaries of analogue and theoretical models. New to this edition are chapters on deepwater foldbelts and lithospheric extension as well as new case studies on volcanic and passive margin basins. Provides a practical reference for petroleum geologists that discusses the importance of rift systems and the structural evolution of the Earth Includes analyses of active rifts in East Africa, China, Siberia, the Gulf of Suez, and the Russian Arctic that provide immediately implementable petroleum exploration applications in regions heavily targeted by oil & gas companies Presents overviews of sequence stratigraphy in rifts and structural controls on clastic and carbonate sedimentation that are critical to the exact mapping of the most lucrative hydrocarbon locations by exploration geologists
