Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California

Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California
Title Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California PDF eBook
Author William R. Dickinson
Publisher Geological Society of America
Pages 50
Release 2005-01-01
Genre Science
ISBN 0813723914

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Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California

Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California
Title Net Dextral Slip, Neogene San Gregorio-Hosgri Fault Zone, Coastal California PDF eBook
Author William R. Dickinson
Publisher
Pages 43
Release 2018
Genre Earthquake hazard analysis
ISBN

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Ophiolites, Arcs, and Batholiths

Ophiolites, Arcs, and Batholiths
Title Ophiolites, Arcs, and Batholiths PDF eBook
Author Clifford Andrae Hopson
Publisher
Pages 588
Release 2008
Genre Science
ISBN 9780813724386

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Wright (geology, U. of Georgia) and Shervais (geology, Utah State U.) edit selections from a symposium titled "Ophiolites, Batholiths, and Regional Geology: A Session in Honor of Cliff Hopson" held at the Cordilleran Section Meeting of The Geological Society of America in 2005. With contributions from geologists and earth scientists from throughout the United States, the title contains separate sections for papers on the topics of ophiolites, arcs, and batholiths. The publication is illustrated in both black-and-white and color, but contains no index.

Deep Marine Systems

Deep Marine Systems
Title Deep Marine Systems PDF eBook
Author Kevin T. Pickering
Publisher John Wiley & Sons
Pages 672
Release 2015-10-23
Genre Science
ISBN 1118865480

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Deep-water (below wave base) processes, although generallyhidden from view, shape the sedimentary record of more than 65% ofthe Earth’s surface, including large parts of ancientmountain belts. This book aims to inform advanced-levelundergraduate and postgraduate students, and professional Earthscientists with interests in physical oceanography and hydrocarbonexploration and production, about many of the important physicalaspects of deep-water (mainly deep-marine) systems. The authorsconsider transport and deposition in the deep sea, trace-fossilassemblages, and facies stacking patterns as an archive of theunderlying controls on deposit architecture (e.g., seismicity,climate change, autocyclicity). Topics include modern and ancientdeep-water sedimentary environments, tectonic settings, and howbasinal and extra-basinal processes generate the typicalcharacteristics of basin slopes, submarine canyons, contouritemounds and drifts, submarine fans, basin floors and abyssalplains.

Tectonics, Sedimentary Basins, and Provenance: A Celebration of the Career of William R. Dickinson

Tectonics, Sedimentary Basins, and Provenance: A Celebration of the Career of William R. Dickinson
Title Tectonics, Sedimentary Basins, and Provenance: A Celebration of the Career of William R. Dickinson PDF eBook
Author Raymond V. Ingersoll
Publisher Geological Society of America
Pages 768
Release 2017-12-28
Genre Science
ISBN 0813725402

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Through a remarkable combination of intellect, self-confidence, engaging humility, and prodigious output of published work, William R. Dickinson influenced and challenged three generations of sedimentary geologists, igneous petrologists, tectonicists, sandstone petrologists, archaeologists, and other geoscientists. A key figure in the plate-tectonic revolution of the 1960s and 1970s, he explained how the distribution of sediments on Earth's surface could be traced to tectonic processes, and is widely recognized as a founder of modern sedimentary basin analysis. This volume consists of 31 chapters related to Dickinson's research interests; many of the authors are his former students, their students, and their students' students, demonstrating his continuing profound influence. The papers in this volume are an impressive tribute to the depth and breadth of Bill Dickinson's contributions to the geosciences.

Age, stratigraphy, and correlation of the late Neogene Purisima Formation, central California coast ranges

Age, stratigraphy, and correlation of the late Neogene Purisima Formation, central California coast ranges
Title Age, stratigraphy, and correlation of the late Neogene Purisima Formation, central California coast ranges PDF eBook
Author Charles Lewis Powell
Publisher
Pages 40
Release 2007
Genre Geology
ISBN

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Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona

Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona
Title Tectonic Setting of Faulted Tertiary Strata Associated with the Catalina Core Complex in Southern Arizona PDF eBook
Author William R. Dickinson
Publisher Geological Society of America
Pages 130
Release 1991
Genre Science
ISBN 9780813722641

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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.