Дисертації з теми "Structural Nevada"
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Pearthree, Philip Arnim. "Geomorphic analyses of young faulting and fault behavior in central Nevada." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185339.
Повний текст джерелаVilla, Danielle E. "Late Paleozoic deformation at Edna Mountain, Humboldt County, Nevada." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447592.
Повний текст джерелаDoyle, Jessica B. "Geology and structure of Winters Creek, Jerritt Canyon District, Elko County, Nevada." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447627.
Повний текст джерелаMuehlberg, Jessica M. "Geology of the Tahoe City sub-basin, Lake Tahoe, California-Nevada." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442871.
Повний текст джерелаNewton, Maury Claiborne III. "Tectonostratigraphic history of the southern Foothills terrane." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185077.
Повний текст джерелаKirkpatrick, James David. "The structural architecture of seismogenic faults, Sierra Nevada, California; implications for earthquake rupture processes." Thesis, University of Glasgow, 2008. http://theses.gla.ac.uk/179/.
Повний текст джерелаSamra, Charles P. "Structural and basin evolution of the western Gale Hills, Lake Mead Miocene extensional domain, Nevada." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1543983.
Повний текст джерелаThis study focuses on the western Gale Hills located in the western portion of the Lake Mead domain in southern Nevada. The western Gale Hills preserve a record of the Miocene sedimentation and deformation related to the breakup of the hanging walls of the South Virgin-White Hills detachment fault and the Lime Ridge oblique, strike-slip fault of the Lake Mead fault system, the initiation of the right-lateral Las Vegas Valley shear zone in the western Lake Mead domain, and subsequent middle to late Miocene deformation. This study focuses on the lower Horse Spring Formation north of the Las Vegas Valley shear zone. To better understand the stratigraphy and deformation, a detailed geologic map (1:10,000 scale) was produced, data from primary and secondary structures were collected, and ash-fall tuff deposits were dated and correlated through 40Ar/39Ar geochronology and tephrachronology. The stratigraphy of the Gale Hills records the initial buttressing of the lower Thumb Member of the Horse Spring Formation onto pre-Tertiary topography. Deposition of the lower Thumb Member records a rapid transgression of the basin margin to the north and northwest across the majority of the Gale Hills. This time was period was then followed by a coarsening up interval and progradation of large alluvial fans in the middle to upper Thumb Member. A transition to a marginal clastic lake in the uppermost Thumb Member then abruptly changed to the Bitter Ridge Limestone algal lake.
Many studies have evaluated the exhumation history of the Gold Butte block in the eastern Lake Mead domain, which forms the footwall of the major South Virgin-White Hills detachment fault and the relationship with the Frenchman Mountain block. This study shows that the Frenchman Mountain block was just south of the Gale Hills during the early to peak stages of detachment faulting from ca. 17-14 Ma. Two new 40Ar/39Ar dates (15.35 Ma) from a prominent ash-fall tuff in the Thumb Member in the northern and southern regions of the western Gale Hills is also in the Frenchman Mountain block. In addition, new tephrachronology correlations have tied Proterozoic-clast debris flows in the western Gale Hills to Proterozoic-clast megabreccia deposits in the Frenchman Mountain block, indicating that the two areas were one connected basin during upper Thumb Member time.
This study suggests that the left-lateral Government Wash and Southern Gale Hills faults are reactivated northeast-striking, west-down normal faults that were in the correct orientation to be major Riedel prime shears (R') to the right-lateral Las Vegas Valley shear zone. Map and facies relationships show that the Thumb Member deposits were faulted locally during deposition at ca. 15.5 Ma, with increased fault activity and sedimentation rates throughout the Thumb Member after 15.35 Ma and before ∼14.5 Ma.
An analysis of structures in the western Gale Hills results in a new model of progressive clockwise rotation and faulting along the Las Vegas Valley shear zone that for the first time honors paleomagnetic results and accounts for all major faulting north of the shear zone. The model is primarily based on clockwise vertical-axis block rotation of domains between oblique left-lateral faults that curve progressively toward the Las Vegas Valley shear zone and terminate into major folds or areas of complex deformation. This model predicts that the western Gale Hills began as a north-northeast elongate block that was reduced in length and elongated in an east-west direction from about 20 to 14 km during translation and rotations. Most of this complex faulting occurred from ca. 13.8 to 8 Ma, after deposition of the Bitter Ridge Limestone.
Foy, Travis A. "Quaternary faulting in Clayton Valley, Nevada: implications for distributed deformation in the Eastern California shear zone-walker lane." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39561.
Повний текст джерелаHammond, K. Jill. "Structural and Geochemical Analyses of Disseminated-Gold Deposits, Bald Mountain-Alligator Ridge District, Nevada: Insights into Fault-Zone Architecture and Its Effect on Mineralization." DigitalCommons@USU, 2001. https://digitalcommons.usu.edu/etd/6719.
Повний текст джерелаVice, Garrett S. "Structural controls of the Astor Pass-Terraced Hills geothermal system in a region of strain transfer in the western Great Basin, northwestern Nevada." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1456425.
Повний текст джерелаPachell, Matthew A. "Structural Analysis and a Kink Band Model for the Formation of the Gemini Fault Zone, an Exhumed Left-Lateral Strike Slip Fault Zone in the Central Sierra Nevada, California." DigitalCommons@USU, 2001. https://digitalcommons.usu.edu/etd/5244.
Повний текст джерелаDelwiche, Benjamin M. "Oligocene paleotopography and structural evolution of the Pah Rah Range, western Nevada implications for constraining slip on the right-lateral Warm Springs Valley fault in the northern Walker Lane /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446438.
Повний текст джерелаHeimgartner, Michelle N. "The geophysical structure of the Sierra Nevada crustal root." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442856.
Повний текст джерелаBauer, John M. "Fire history and stand structure of a central Nevada pinyon-juniper woodland." abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1436023.
Повний текст джерелаKeifer, MaryBeth 1963. "Age structure and fire disturbance in the southern Sierra Nevada subalpine forest." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/278045.
Повний текст джерелаReeg, Heidi Alison. "Seismic structure of the crust and upper mantle of the Sierra Nevada, California." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460872.
Повний текст джерелаNadin, Elisabeth Sophia Stock J. M. Saleeby Jason B. "Structure and history of the Kern Canyon fault system, southern Sierra Nevada, California /." Diss., Pasadena, Calif. : Caltech, 2007. http://resolver.caltech.edu/CaltechETD:etd-05162007-094830.
Повний текст джерелаMcLachlan, Holly S. "Stratigraphy, Structure, and Fluid Flow at the Soda Lake Geothermal Field, Western Nevada, USA." Thesis, University of Nevada, Reno, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10841261.
Повний текст джерелаThis study assessed the geologic setting of the Soda Lake geothermal field, which lies in the southern part of the Carson Sink basin of northwestern Nevada within the Basin and Range of the western USA. The Basin and Range is a world-class geothermal province with significant untapped potential, particularly in blind (no surface hot springs or steam vents) geothermal systems. Blind systems probably comprise the majority of geothermal resources in the region, with many lying buried under thick accumulations of sediments in the broad basins that make up >50% of the province. Locating fault-hosted blind geothermal systems in these basins is challenging, and identifying the most prospective parts of these systems is even more demanding. The Soda Lake geothermal field is one of the more deeply buried known systems in this region. This study was undertaken to elucidate the stratigraphic and structural framework of the Soda Lake field, and to determine the probable controls on fluid flow in the production areas. Due to the depth of basin-fill sediments at the Soda Lake field, the structural setting and specific controls on fluid flow are not discernable at the surface. However, the Soda Lake geothermal field has produced electricity for over 30 years, and a wealth of subsurface data has been acquired since the field was first targeted for geothermal exploration in 1972-73. The abundant well data and geophysical surveys in particular provided a foundation for investigation of the geologic setting of the field.
This study was divided into three major parts. In the initial part of the study, a stratigraphic framework was developed for the Soda Lake area from analysis of cuttings, borehole geophysical logs, and radiometric dates of key igneous units. It was validated against exposed stratigraphic sections in the surrounding ranges and interpreted basin-fill sections derived from wells across the Carson Sink basin. Pursuant to this in the second part of the study, a comprehensive 3D geologic model of the Soda Lake field was construct from three inputs: 1) the new stratigraphic framework model, 2) bedding attitude estimates from seismic reflection surveys and borehole logs, and 3) a fault framework derived from both well data and geophysical surveys. The Soda Lake fault framework had been modeled from seismic reflection and borehole data in previous studies. In this study, one of the seismic fault pick sets was enhanced along strike and extended to >2 km depth using well data and forward modeled gravity. This enhanced fault framework served as the initial input to the Soda Lake geologic model. A ‘horizon model’ based on stratigraphic well intercepts and attitude data was then built around the fault framework to generate a 3D geologic block model for the Soda Lake field. In the final phase of this study, the Soda Lake temperature anomaly was modeled in a series of cross-sections extracted from the geologic model. The temperature anomaly was interpreted in context with the geologic model and production data in order to identify the main upwelling and outflow conduits. Key controls on fluid upwelling and probable fluid flow pathways were catalogued based on the spatial relationship between the temperature anomaly and the geologic model of the field area.
There are three major stratigraphic divisions at the Soda Lake geothermal field. The field is situated in and beneath ∼900-1100 m of unconsolidated basin-fill sediments. The basin-fill section is divided into an upper 300-500 m thick, relatively coarse-grained, quartzo-feldspathic unit, and a lower ∼150-300 m thick mud-rich unit. The unconsolidated basin fill is interrupted by a 5.1 Ma trachyandesite body that is up to ∼750 m thick in the central part of the Soda Lake well field. The body consists of a buried vent edifice near one of the main production wells, 50-90 m thick outflow aprons, and a conical root on the west side of the well field that can be traced to the Miocene bedrock contact. About 1 km of Miocene bedrock underlies the basin-fill section. The Miocene bedrock section is dominated by mafic lavas, interbedded with lesser tuff, clastic sedimentary rocks, and minor limestone. No early Miocene or Oligocene strata have been found at the Soda Lake field area. The middle to late Miocene section overlies Triassic-Jurassic metamorphic basement and Jurassic-Cretaceous granite. (Abstract shortened by ProQuest.)
Mankhemthong, Niti. "Structure of the inter-basin transition zone between Dixie Valley and Fairview Valley, Nevada, USA." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460765.
Повний текст джерелаDilles, Zoe Y. G. "Geochronologic and Petrologic Context for Deep Crustal Metamorphic Core Complex Development, East Humboldt Range, Nevada." Scholarship @ Claremont, 2016. http://scholarship.claremont.edu/scripps_theses/811.
Повний текст джерелаMcKee, Ryan A. "Structure and volcanic evolution of the northern Highland Range, Colorado River Extensional Corridor, Clark County, Nevada." Thesis, San Jose State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10255048.
Повний текст джерелаA geologic map was drafted of the northern Highland Range (1:24,000 scale), rock units defined, and samples of the volcanic units were obtained and analyzed to produce a representative suite of chemical analyses to characterize the range of geochemical variability. The style, relative timing, and orientation of faults and dikes, and the magnitude and variability of stratal tilting was examined to evaluate the structural and magmatic evolution of the northern Highland Range in the context of models for the Colorado River Extensional Corridor and Black Mountains accommodation zone. Methods involved field mapping of the range scale structure and geometry of faulting, structural interpretation, and geochemical analysis of ten representative samples by X-ray spectrometry. Structural data was interpreted with stereonets; geochemical whole rock, and major elemental data was analyzed by comparing elemental oxides; trace elemental data was analyzed by normalizing to chondrite concentrations. The northern Highland Range is a ca. 3,000 m-thick sequence of volcanic and volcaniclastic flows and breccias overlain by regionally extensive tuffs (Mt. Davis and Bridge Spring). Unique mineralogy, geochemistry and lithologic character of some units and volcanic vent facies, as well as the presence of domes and dikes feeding the extrusives argue for local derivation from a dome/stratocone volcanic complex that was mostly restricted to the northern Highland Range.
Smith, Thomas Ferguson. "Pathogens and plant community structure in an old-growth mixed-conifer forest of the Sierra Nevada, California /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.
Повний текст джерелаFair, Charles Lawrence. "Structure of the Roberts Mountains allochthon in the Three Bar Ranch Quadrangle, Roberts Mountains, Eureka County, Nevada." California State University, Long Beach, 2013.
Знайти повний текст джерелаMcNamara, Kelsey Caitlin. "The influence of growing structures on Cretaceous alluvial systems along the Cordilleran thrust belt front, Valley of Fire, Southern Nevada." Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/mcnamara/McNamaraK0510.pdf.
Повний текст джерелаEisenberg, Jane L. "Structure, Composition, and Emplacement History of Orbicular Granites and Comb Layering, Sierra and Sequoia National Forests, CA." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/scripps_theses/469.
Повний текст джерелаMajewski, Natasha K. "Mapping the Experience of Home| Using Geospatial Perception Mapping to Understand Neighborhood Sense of Place in the Wells Avenue Neighborhood Conservation District, Reno, Nevada." Thesis, University of Nevada, Reno, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1599987.
Повний текст джерелаHome…that space so personal, so distinct, so intrinsic to the human/place relationship that “lies right at the heart of human geography” (Cresswell, 2004, p. 93). Studying the connection people feel toward certain places through concepts of emotion, experience, and attachment to meaning stems outward from the phenomenological and humanist branches of geography (Holt-Jensen, 2009). With every person’s version of home a space unto itself, is it possible for a place so intimate to be studied and defined? My answer is yes. This phenomenological case study investigates the perceptions and emotions of a newly designated conservation neighborhood, the second of its kind in Reno, Nevada. In an area usually looked at as a site for economic development and perhaps initiatives in historic preservation, there is little research undertaken through a cultural geographic lens aiming to understand how different communities in the area view their own home ground in transition and the implications of place creation. This project navigates the allegory of home through the voices and drawn maps of the Wells Avenue Neighborhood Conservation District (WANCD) and is approached through the impressions and attitudes of community groups, merchants, and a patchwork of residents diverse in both their backgrounds and their stories about the place they live. Through the construction of sense of place inside and around the WANCD and with the usage of Geographic Information Systems as a tool for qualitative data collection and comunication, this study investigates how personal experiences and perceptions, community connections and common goals, and specifically-identified areas of personal meaning play into the way in which these different stakeholders experience, participate in, and envision their neighborhood.
Croft, Amy A. "Assessing Plant Community Structure in the Upper Las Vegas Wash Conservation Transfer Area, Nevada: The Influence of Biotic and Abiotic Variables." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5005.
Повний текст джерелаPiraquive, Alejandro. "Cadre structurel, déformations et exhumation des Schistes du Santa Marta : accumulation et histoire de déformation d'un terrain caraïbe au nord de la Sierra Nevada de Santa Marta." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAU019/document.
Повний текст джерелаThe Sierra Nevada de Santa Marta (SNSM) is perhaps the most complex crustal massif found in the Northern Andes. Its unique situation as an isolated triangular massif segmented from the continuity of the 7000 km long Andes as the last standing mountain before the domains of the younger Caribbean plate, places the SNSM as an island separated from all surrounding mountain ranges of the continental margin. A prominent relief characterizes this mountain reaching the highest altitude in the entire Caribbean realm at 5750 m, and defines, the SNSM as the highest coastal mountain range in the world. For this reason the SNSM is a unique geological feature that embraces an outstanding biodiversity from its coral reefs in the Caribbean Sea passing trough heavily vegetated tropical rainforests, high cloud forests, and moorlands, until its magnificent summit capped by glaciers.By its position on the northwestern margin of South America the study of the SNSM provides the opportunity to resolve important questions on the evolution of super-continental cycles since Grenvillian times through the Neoproterozoic Pan-African orogeny, the Late Paleozoic Ouachitan-Appalachian orogeny that led to Pangæa assembly, and Triassic Pangæa break-up followed by the Jurassic Central Atlantic Rift and more recently by the start of the Caribbean plate accretion/subduction since the Late Cretaceous against northwestern South America.In this investigation I attempt to unravel the geological history of the Sierra Nevada de Santa Marta Massif using geochronological, thermochronological geochemical and isotopic techniques that allowed to gather a significant amount of new data to add to the existent database on the SNSM.Our results include a reevaluated geological map 1:25000, in which I define 4 new stratigraphic units, accompanied by two crustal-scale cross sections of 320 km length that dissect the massif, and 8 parallel cross sections at the NW corner of the SNSM metamorphic belt. The geochemical and isotopic dataset includes: i) 17 igneous and metamorphic rocks and 6 detrital samples dated by laser-ablation induced-coupled-plasma mass-spectrometry (LA-ICP-MS), U-Pb zircon geochronology that resulted in 2790 new dates and in-situ trace element analyses, ii) 16 igneous and metamorphic rocks that yielded 31 new thermochronometric ages as follows: 12 zircon fission track ages, 11 Apatite fission track ages and 7 (U-Th)/He in apatite ages, iii) Whole rock geochemistry from 10 samples and iv) Microprobe mineral chemistry in spot analyses and x-ray maps from 4 samples that yielded zoned and peritectic garnet. These data were acquired from the units of the northwestern metamorphic suite of the SNSM massif. With these data we investigated i) The units that conform the SNSM metamorphic belts, their chronological and stratigraphic relationships from the Precambrian to the Eocene; ii) The time span and P-T conditions of a Late Paleozoic-Early Mezosoic metamorphic event (Chapter 1), iii) The timing of igneous activity accretion and exhumation of oceanic and continental terranes during the Late Cretaceous to late Miocene. iv) A mechanism for explaining how this exhumation occurred under a collisional regime by a climate influenced process at elevated erosion and thermal gradients (Chapter 2); v) The late processes of denudation and sedimentation controlled by tectonics in two marginal basins since the early Miocene under decreased erosion rates and thermal gradients (Chapter 3)
Drakos, Peter S. "Tertiary stratigraphy and structure of the southern Lake Range northwest Nevada assessment of kinematic links between strike-slip and normal faults in the northern Walker Lane /." abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1442868.
Повний текст джерелаBlomdahl, Erika M. "Interactions Between Fire Severity and Forest Biota in the Central Sierra Nevada: Formation and Impact of Small-Scale Fire Refugia and the Effect of Fire on Forest Structure Predictive of Fisher (Pekania pennanti) Den Habitat." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7281.
Повний текст джерелаBlein, Olivier. "Les séquences magmatiques d'arc du Paléozoïque supérieur et Trias du Nevada (Etats-Unis d'Amérique) et de Colombie britannique (Canada) : structure, pétrologie et géochimie : implications dans l'évolution géodynamique des Cordillères nord-américaines et des processus d'accrétion continentale." Phd thesis, Université Joseph Fourier (Grenoble), 1996. http://tel.archives-ouvertes.fr/tel-00690779.
Повний текст джерелаMICHEL-NOEL, GERARD. "Mecanismes et evolution de l'extension intracontinentale des "basin and range", et developpement tectonique des bassins sedimentaires." Paris 6, 1988. http://www.theses.fr/1988PA066419.
Повний текст джерелаAbolins, Mark Joseph Wernicke Brian P. "I. Stratigraphic constraints on the number of discrete Neoproterozoic glaciations and the relationship between glaciation and Ediacaran evolution. : II. The Kwichup Spring thrust in the northwestern Spring Mountains, Nevada : implications for large-magitude extension and the structure of the Cordilleran thrust belt /." Diss., Pasadena, Calif. : California Institute of Technology, 1999. http://resolver.caltech.edu/CaltechETD:etd-04202006-152208.
Повний текст джерелаGreger, Joel G. "Stratigraphy and structural geology of the Gilbert District, Esmeralda County, Nevada." 1986. http://catalog.hathitrust.org/api/volumes/oclc/15477815.html.
Повний текст джерелаTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 118-125).
Carpenter, James A. "Structure of the southern Mormon Mountains, Clark County, Nevada and regional structural synthesis : fold-thrust and basin-range structure in southern Nevada, southwest Utah, and northwest Arizona /." 1989. http://hdl.handle.net/1957/13293.
Повний текст джерела"Stratigraphy, Structure, and Mineralization of Kinsley Mountain, Elko County, Nevada." Master's thesis, 2012. http://hdl.handle.net/2286/R.I.14566.
Повний текст джерелаDissertation/Thesis
M.S. Geological Sciences 2012
Carpenter, Daniel G. "Geology of the north Muddy Mountains, Clark County, Nevada and regional structural synthesis : fold-thrust and basin-range structure in southern Nevada, southwest Utah, and northwest Arizona /." 1989. http://hdl.handle.net/1957/13289.
Повний текст джерелаHelgeson, James M. "Structure and stratigraphy of the Mountain Boy Range, Eureka County, Nevada." Thesis, 1993. http://hdl.handle.net/1957/35749.
Повний текст джерелаBurrus, Joshua Bruce. "Structural and stratigraphic evolution of the Weepah Hills Area, NV : transition from basin-and-range extension to Miocene core complex formation." 2013. http://hdl.handle.net/2152/22226.
Повний текст джерелаtext
Brown, Mary Anne. "The pre-Tertiary geology, structural evolution, and geochronology of the Pueblo Mountains, Nevada-Oregon." Thesis, 1996. http://hdl.handle.net/1911/14077.
Повний текст джерелаQuinn, Michael Joseph. "Pre-Tertiary stratigraphy, magmatism, and structural history of the Central Jackson Mountains, Humboldt County, Nevada." Thesis, 1996. http://hdl.handle.net/1911/16970.
Повний текст джерелаKohler, Gretchen. "Structural evolution of metamorphic tectonites beneath the Silver Peak-Lone Mountain detachment fault, west-central Nevada." Thesis, 1995. http://hdl.handle.net/1911/13966.
Повний текст джерелаTitus, Sarah J. "Geological and geophysical investigation of two fine-grained granites, Sierra Nevada, California evidence for structural controls on volcanism /." 2002. http://catalog.hathitrust.org/api/volumes/oclc/51571503.html.
Повний текст джерелаTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 86-100).
Merguerian, Charles. "Stratigraphy, structural geology, and tectonic implications of the Shoo Fly Complex and the Calaveras-Shoo Fly thrust, Central Sierra Nevada, California." Thesis, 1985. https://doi.org/10.7916/d8-mdta-w378.
Повний текст джерелаAschoff, Jennifer L. 1978. "Controls on the development of clastic wedges and growth strata in foreland basins : examples from Cretaceous Cordilleran foreland basin strata, USA." 2008. http://hdl.handle.net/2152/9664.
Повний текст джерелаtext
Sams, David Bruce. "U/Pb Zircon Geochronology, Petrology, and Structural Geology of the Crystalline Rocks of the Southernmost Sierra Nevada and Tehachapi Mountains, Kern County, California." Thesis, 1986. https://thesis.library.caltech.edu/2961/1/Sams_db_1986.pdf.
Повний текст джерелаField mapping, petrography, U/Pb zircon geochronology, and Rb/Sr geo-chemistry on the crystalline rocks of the southernmost Sierra Nevada and Tehachapi Mountains north of the Garlock fault have 1) generated a structural, geo-chemical, and geochronological framework; 2) demonstrated a continuation of Sierran plutonic and metasedimentary rocks into the Tehachapi Mountains; 3) indicated that the region, in particular the gneiss complex of the Tehachapi Mountains, represents the deepest exposed levels of the Sierra Nevada batholith; 4) placed constraints on possible mixing models between upper mantle and meta-sedimentary components to generate the observed geochemical signatures of the rocks; and 5) resolved a major mid-Cretaceous deformation event.
The main crystalline rocks of the study area are the rocks of the Bear Valley Springs intrusive suite and the gneiss complex of the Tehachapi Mountains. The Bear Valley Springs suite is a mid-Cretaceous tonalite batholith complex with coeval gabbroic intrusives. The gneiss complex of the Tehachapi Mountains consists dominantly of early-Cretaceous orthogneiss, with subordinate paragneiss and local domains having granulite affinities. The orthogneisses are dominantly tonalitic in composition, with significant layers and domains of granodioritic to granitic and lesser dioritic to gabbroic gneiss. Quartz-rich metasedimentary rocks and marble constitute the main framework assemblage into which the plutonic rocks were emplaced. Field relations demonstrate assimilation of metasedimentary material into the orthogneisses and magma mixing between mafic, tonalitic, and anatectic granitic material derived from the metasediments.
Crystalline rocks of the region, with the exception of metasedimentary framework rocks, fall into a narrow age range of 90-120 Ma, and exhibit three main age suites. Most samples have zircon populations with systematics indicative of igneous crystallization, with signs of zircon inheritance or entrainment in the vicinity of metamorphic septa. Strongly discordant samples are relatively rare, and include the granodiorite of Claraville (concordia intercepts of 90/1900 Ma), the paragneiss of Comanche Point (108/1450), and a quartzite in the Kings sequence metasedimentary framework rocks (1700 Ma upper intercept).
The rocks in the first age suite (gneiss complex of the Tehachapi Mountains and augen gneiss of Tweedy Creek) exhibit a greater degree of deformation, especially under moderate to high grade conditions. Major deformational fabrics are expressed as gneissic banding, mylonitization, recrystallization, boudinaging, and transposition of internal contacts. Internally and externally concordant zircon systematics of the orthogneisses in this suite indicate igneous crystallization between 110-120 Ma. Discordant zircon systematics suggest entrainment of minor amounts of mid-Proterozoic zircon and/or open system lead loss in response to the 100 Ma magmatic culmination (Bear Valley Springs event).
The second suite, 100±2 Ma Bear Valley Springs intrusive suite (tonalite of Mount Adelaide, tonalite of Bear Valley Springs, hypersthene tonalite of Bison Peak, and metagabbro of Tunis Creek) contains igneous rocks which locally cross-cut the older suite. These rocks have a late-stage deformational fabric shown primarily in the tonalites as pervasive foliation and faint gneissic banding. The zircon systematics of this suite are internally and externally concordant, indicating igneous crystallization ages, with only local evidence of entrainment of mid-Proterozoic zircon. The deformation of the suite was synplutonic, with later phases within the suite lacking significant deformational fabrics. The major deformational fabrics exhibited in the Tehachapi and Bear Valley Springs suites may be the result of the intrusion of the tonalite batholith into the lower crust, and/or the result of intra-arc shearing that was preferentially concentrated in various intrusive bodies.
The third suite, late deformational intrusive rocks, consists of units which cross-cut deformational features in both the older suites. These youngest rocks are themselves slightly to nondeformed. The members in the suite have ages of 90 Ma (granodiorite of Claraville), 93 Ma (tonalite stock at Tweedy Creek), and 94 Ma (pegmatite dike at Comanche Point).
Field mapping and petrography have shown a southward continuation of Sierran plutonic and metasedimentary framework rocks to the region of Tejon Creek. The plutons show a constant age spread and overall composition throughout the region, with a greater degree of solidus to hot sub-solidus deformation exhibited southward. The metamorphic septa have a higher grade, and are more strongly deformed southwards, becoming migmatitic. The southern margin of the tonalite of Bear Valley Springs consists of a gradational contact with the hypersthene tonalite of Bison Peak, which is believed to represent the floor or conduit phase of the batholith. Along its southwestern margin, the tonalite of Bear Valley Springs grades into the gneiss complex of the Tehachapi Mountains through a region of tonalitic gneiss that appears to be derived through the mixing of tonalitic magmas and migmatitic melts produced from paragneiss components in the gneiss complex. Paleomagnetic and structural restoration of the southwestern margin of the tonalite indicates that it may represent the uptilted floor of the batholith that originally spread out over its gneissic substrate.
The crystalline rocks of the southernmost Sierra Nevada represent the deepest exposed levels of the Sierra Nevada batholith. Saleeby and others (1986a) indicate a continual increase in depth of exposure from the central to southern part of the batholith. Elan (1985) shows metamorphic conditions of 3.0 kb and 700°C in the south-central Sierras, while Sharry (1981b) has suggested that parts of the gneiss complex have a deep-seated (8 kb) origin with rapid late-Cretaceous uplift. Granulitic nodules of similar character to parts of the gneiss complex have been described by Domenick and others (1983) as originating from a similar depth beneath the central Sierra. Gneissic granitoids have numerous lenses of mafic to ultramafic cumulates showing igneous crystallization under granulite facies conditions. The domains of "granulite" in the gneiss complex of the Tehachapi Mountains are believed to be hot, relatively dry zones in a crystallizing and deforming batholithic complex. Magmatic epidote-bearing tonalites and late stage sub-solidus autometamorphic garnet growth are further indicators of a deep (≥6 kb) level of origin for the region.
The "granulites" (metagabbro of Tunis Creek and hypersthene tonalite of Bison Peak) are interpreted to be of an igneous origin. Evidence for this interpretation consists of: relict olivine grains and cumulate textures; foliation believed to be the result of igneous flow; zoned plagioclase necessitating the presence of a magma; tonalites that contain epidote that is interpreted to be of magmatic origin; δ18O and Rb/Sr isotopic values in the igneous range; abundance of retro-grade but paucity of prograde mineral reactions; gradational contacts between plutonic units; and observed intrusive contacts. Pyroxene within the "granulites" is believed to be of a pyrogenic origin. The rocks typically have a retrograde assemblage that consists of olivine → orthopyroxene and pyroxene → amphibole. The mineral assemblages all point to a downward P-T path.
Simple two-component mixing models have been constructed for samples from the southernmost Sierra Nevada, and involve incorporation of partial to complete melts of metasedimentary material into "primitive" upper mantle orogenic mafic magmas prior to crystallization. The two possible end-members are the quartzite-paragneiss of Comanche Point and the hypersthene tonalite of Bison Peak-metagabbro of Tunis Creek. Initial 87Sr/86Sr correlates directly with δ18O, and generally correlates inversely with Sr content for most of the samples. Simple isotopic mixing models indicate incorporation of up to 33% metasedimentary material in the granitic rocks, and up to 15% in the tonalites, with younger and more easterly samples requiring a larger metasedimentary component. The non-correlation of Sro with Sr content for some of the Pastoria Creek samples indicates an oceanic-affinity source with little interaction with continental crustal material. A number of samples appear to require a third, probable lower continental crustal and/or oceanic crustal-upper mantle component that may have a Paleozoic age.
Based on Rb/Sr and K/Ar age systematics, the region was uplifted in a regional cooling event at ~85 Ma perhaps as part of regional thrusting event(s) in southern California. The crystalline rocks were subsequently exposed and unconformably overlapped by Eocene marine sediments. Paleomagnetic data suggest about 45-60° of clockwise rotation between 80 and 16 Ma for the southern end of the Sierras, possibly as the result of the thrusting event responsible for the regional uplift.
Saleeby and others (1986c) have suggested that the lower crust beneath the Sierra Nevada batholith is comprised in part by granulitic and mafic intrusive rocks. Experimental studies by Christensen and Fountain (1975) also suggest the presence of granulites in the lower continental crust. The interpretation that the study area represents the deepest exposed level of the southernmost Sierra Nevada batholith leads to the implication that granulitic-affinity rocks comprise the lower part of the continental crust. Therefore, this study provides some degree of confirmation to the aforementioned hypotheses.
SCHMIDT, WILLIAM JAY. "STRUCTURE OF THE NORTHERN SIERRA NEVADA, CALIFORNIA." Thesis, 1985. http://hdl.handle.net/1911/15931.
Повний текст джерелаMcIntyre, Jana L. "Late Cenozoic structure of the central Wassuk Range, Mineral County, Nevada /." 1990. http://hdl.handle.net/1957/12257.
Повний текст джерелаIncludes plates in pocket. Includes mounted photographs. Typescript (photocopy). Includes bibliographical references (leaves 89-92). Also available on the World Wide Web.
Nadin, Elisabeth Sophia. "Structure and history of the Kern Canyon fault system, southern Sierra Nevada, California." Thesis, 2007. https://thesis.library.caltech.edu/1838/11/5_Nadin_Ch1.pdf.
Повний текст джерелаWolak, Chad Edward. "Mesozoic structure, stratigraphy, and magmatism in the eastern Pueblo Mountains, southeast Oregon and northwest Nevada : a record of an allochthonous arc terrane." 2001. http://purl.galileo.usg.edu/uga%5Fetd/wolak%5Fchad%5Fe%5F200112%5Fms.
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