Nuwuvi (Southern Paiute) have inhabited the southern Great Basin for thousands of years, and consider Nuvagantu (where snow sits) in the Spring Mountains landscape to be the locus of their creation as a people. Their ancestral territory spans parts of Nevada, Utah, Arizona, and California. My research identifies and describes the heterogeneous character of Nuwuvi ecological knowledge (NEK) of piñon-juniper woodland ecosystems within two federal protected areas (PAs) in southeastern Nevada, the Spring Mountains National Recreation Area (SMNRA) and the Desert National Wildlife Refuge (DNWR), as remembered and practiced to varying degrees by 22 select Nuwuvi knowledge holders. I focus my investigation on four primary aspects of NEK. First, drawing from data obtained through ethnoecological research, I discuss how Nuwuvi ecological knowledge evolved through protracted observation and learning from past resource depletions, and adapted to various environmental and socio-economic drivers of change induced since Euro-American incursion. Second, I argue that Nuwuvi management practices operate largely within a framework of non-equilibrium ecology, marked by low to intermediate disturbances and guided by Nuwuvi conceptions of environmental health and balance. These practices favor landscape heterogeneity and patchiness, and engender ecosystem renewal, expanded ecotones, and increased biodiversity. I then consider the third and fourth aspects of NEK as two case studies that consider NEK at the individual, species, population, habitat, and landscape scales. These case studies operationalize NEK as a relevant body of knowledge and techniques conducive to collaborative resource stewardship initiatives with federal land management agency partners. In the first case study I suggest that the Great Basin piñon pines are Nuwuvi cultural keystone species (CKS), evaluating their central importance to Nuwuvi according to several criteria including number of uses, role in ritual and story, and uniqueness relative to other species. In the second case study I contend that local social institutions regulated Nuwuvi resource use in the past and in some cases continued to do so at the time of study. These local social institutions included a system of resource extraction and habitat entrance taboos that may have mitigated impacts and supported sustainable resource use and conservation. The implications of this research are that Nuwuvi ecological knowledge, disturbance-based adaptive management practices, and resource and habitat taboos are relevant to contemporary land management concerns in piñon-juniper woodlands, offering complementary approaches to adaptive management as practiced in the SMNRA and the DNWR despite divergent epistemological foundations. My research contributed to the Nuwuvi Knowledge-to-Action Project, an applied government-to-government consultation, collaborative resource stewardship, and cultural revitalization project facilitated by The Mountain Institute among seven Nuwuvi Nations, the U.S. Forest Service, and the U.S. Fish and Wildlife Service.

In the arid landscapes of the southern Great Basin and northern Mojave Desert, issues surrounding water resource management are often politically contentious. Nuwuvi (Southern Paiute) have known and managed these resources for thousands of years prior to Euro-American arrival in the region. A variety of factors, including federal policies that resulted in the creation of reservations and forced placement in boarding schools, as well as contemporary resource commodification, have influenced Nuwuvi knowledge and practice. In this thesis, I examined the character of Nuwuvi ethnohydrological knowledge, including management knowledge, of two protected areas: Spring Mountains National Recreation Area (SMNRA), managed by the U.S. Forest Service (USFS) and Desert National Wildlife Refuge (DNWR), managed by the U.S. Fish and Wildlife Service (USFWS). In addition, I investigated perceptions of water health and restoration among participants from the two managing agencies and six Nuwuvi Nations. I addressed these topics using the theoretical framework of political ecology and a methodology that included semi-structured interviews and demographic questionnaires with 16 Nuwuvi knowledge holders and four federal agency participants. I conducted text analysis of partial interview transcripts using the inductive coding method in order to identify recurring themes and concepts related to hydrology, management, and restoration. My results illustrated that Nuwuvi ethnohydrological knowledge, which developed incrementally over time, conceptualized water as a sentient being that required human interaction to remain healthy. There was also evidence that Nuwuvi knowledge of water was changing as a result of political, economic, and social forces. Furthermore, these findings suggest that Nuwuvi and agency approaches to hydrological management and restoration were built upon differing epistemologies, though there was convergence among specific management and restoration techniques. Based on these results, a report of findings from the Nuwuvi Knowledge-to-Action project, including recommendations for collaborative stewardship approaches, was delivered to participants in August 2013.

Studies of the hydrogeology of the southern Great Basin differ widely in their conclusions regarding the origin of major springs at Ash Meadows, in the Amargosa Desert, Nevada, and in the Furnace Creek- Nevares Spring area in Death Valley, California. The diversity of opinion reflects the following. First, ground water commonly moves between intermontane basins of the region via thick, highly fractured, and areally extensive Paleozoic carbonate rocks; the resulting lack of correspondence of topographic and ground-water divides precludes routine utilization of the water-budget method in the study of these basins. Second, subsurface hydraulic data for the regional carbonate aquifer are sparse and difficult to interpret because of the complex subsurface disposition of and hydraulic barriers within the aquifer. An analysis of hydrologic, geologic, geochemical, and isotopic data permits a first approximation of the subsurface watershed tributary to the cited spring groups. Water temperature, chemistry, isotope content, hydraulic head, and geologic relations indicate that the major springs at Ash Meadows and in the Furnace Creek-Nevares Spring area, though emerging from unconsolidated Quaternary strata, are fed by water moving directly from the underlying carbonate aquifer of Paleozoic age. Joint use of potentiometric, geologic, and isohyetal maps indicates that the subsurface watershed tributary to Ash Meadows is no smaller than 4,500 square miles. The Ash Meadows ground-water basin is bordered on the south and east by the Spring Mountains and Sheep Range, the principal recharge areas, and on the west by the Belted Range, Eleana Range, and Shoshone Mountain. A northern boundary was not definable, and some underflow from White River ground-water basin, 90 miles northeast of the springs, is probable. The hydrogeologic data do not support the conclusion of earlier studies that underflow from Pahrump Valley is the major source of the spring discharge at Ash Meadows; probably no more than a few percent of the total comes from that valley. Comparison of the size, climate, and discharge from the Ash Meadows basin with that of the surface watershed tributary to the Furnace Creek-Nevares Spring area indicates that most of the spring discharge in east-central Death Valley originates well beyond its confines. Disposition of the carbonate aquifer favors the movement of ground water into Death Valley from central Amargosa Desert. Water in the carbonate aquifer in the latter area may be derived from the Ash Meadows basin, from the overlying valley fill, or both. Five hydrochemical facies were distinguished by percentage of major cations and anions in ground water from 147 sources. The hydrochemical facies reflect both the mineralogy of strata within recharge areas and downward crossflow from a Tertiary tuff aquitard into the carbonate aquifer. The areal distribution of these facies provides evidence for a northeasterly source of the Ash Meadows discharge, absence of significant underflow from Pahrump Valley to Ash Meadows, and movement of water from the central Amargosa Desert to the Furnace Creek- Nevares Spring area. The data are also compatible with southwestward underflow into the Ash Meadows basin from the White River basin. The deuterium content of 53 water samples from 27 major valleylevel springs and selected wells falls into several areally distinct patterns which suggest that 35 percent of the Ash Meadows discharge is derived from the White River basin, that underflow from Pahrump Valley is unlikely, and that water discharging in the Furnace Creek-Nevares Spring area may be related to water in the carbonate aquifer within the Ash Meadows basin. However, other interpretations are possible indicating that unequivocal interpretations about the regional flow system cannot be made from isotopic data alone.

This study is about the impacts of the transportation of low level radioactive waste (LLRW) on American Indians. The terms American Indians, Native Americans, and Indians are used interchangeably throughout this report to refer to people who are members of tribes in the United States. The information contained in this report is valuable to non -Indian individuals, communities, and governments as well as to the tribes and the U.S. Department of Energy/Nevada Operations Office (DOE/NV) for which it was prepared. Many of the individuals who agreed to participate in this study asked if their non -Indian neighbors were also being given the opportunity to share their views and perspectives on the transportation of LLRW near and through their neighborhoods. Although this study was designed to include only Native Americans, it can serve as a model for additional studies in non –Indian communities. American Indian tribes have a unique status as sovereign nations within the U.S., and this study was designed to address that relationship.This study includes an assessment of social and cultural impacts. One type of impact assessment concerns the estimation and communication of risks associated with potentially dangerous technologies or substances. Such an assessment, a technological "risk assessment," is generally conducted by natural or physical scientists and focuses on the probability and magnitude of various scenarios through time (Wolfe 1988). The specialists who conduct the assessment believe their estimates reflect the "real risks" of a technology or project because the estimates were made using scientific calculations. This study is not a risk assessment. Instead, this study pays attention to the public perceptions of impacts and risks. Like other social scientists, the researchers and American Indian partners who designed and conducted this study focus on public perceptions and frame the discussions in terms of locally defined values and concerns.This study involves 29 tribes and subgroups and is therefore very complex. Every effort has been made to present information systematically to help the reader make sense of what is being presented. Information about the tribes is presented in the same order throughout the report.

This book examines the long -term consultation partnership involving a federal agency, a group of American Indian tribes, and a team of anthropologists. This book highlights the history, evolution, dynamics, and results of the consultation relationship between the U.S. Department of Energy Nevada Operations Office (DOE/NV) and 20 tribes and organizations composed of ethnic Numic-speaking Western Shoshone, Southern Paiute, and Owens Valley Paiute -Shoshone people. A team of applied anthropologists currently affiliated with the Bureau of Applied Research in Anthropology at the University of Arizona in Tucson (UofA), and a team of archaeologists from the Desert Research Institute (DRI), a unit of the University and Community College System of Nevada in Reno and Las Vegas, Nevada, respectively, have provided technical assistance and contract consulting services to the Indian tribes and the DOE/NV, first on the Yucca Mountain Site Characterization Office (YMSCO) and, in the past decade, on the Nevada Test Site (NTS). During the early stages of the consultation relationship, the culturally affiliated Indian and pan-Indian entities unified themselves into a single indigenous organization, the Consolidated Group of Tribes and Organizations, or CGTO, for the purpose of defending their collective interests in the lands and resources comprising the NTS in south –central Nevada. Since 1994, this new Indian organization has consulted with the DOE/NV on an increasingly wider range of issues that affect Indian cultural, religious, and resource values on and around the NTS. The book also examines these cultural and religious values regarding traditional lands and resources, and the cultural significance of resources, objects, places, and landscapes within the boundaries of this facility that have been affected by DOE/NV mission activities. The consultation relationship was initiated, and continues into the present, as a result of the implementation of a series of federal environmental laws and regulations that require consultation with American Indian tribal governments when activities conducted with federal funds, in federal facilities, or both, have the potential to adversely impact traditional American Indian resources and cultural practices. Most notable among these is the American Indian Religious Freedom Act (AIRFA), which was passed by the United States Congress in 1978. Prior to that time, cultural resources were managed mainly in accordance with the provisions set forth in Sections 106 and 110 of the National Historic Preservation Act.

The assemblage of ca. 6–4 Ma volcanic rocks exposed at the Sagehen Research station in the Truckee-Tahoe region of the northern Sierra Nevada, United States, is interpreted to be, within the Ancestral Cascades volcanic arc, a Lassen-type stratovolcano complex. Sagehen is of particular importance because it is one of the few Tertiary arc volcanic centres in California which has not been heavily glaciated during the Pleistocene. The volcanic rocks are variably porphyritic or aphanitic, including abundant plagioclase with clinopyroxene and amphibole. The rocks range from basalt to basaltic-andesite to andesite in composition. Basalts are olivineand clinopyroxene-bearing with minor phenocrysts of plagioclase. The basaltic-andesites are primarily pyroxene bearing while the andesites contain pyroxene-, plagioclase- and hornblende porphyritic phases. Sagehen arc lavas are calc-alkaline and enriched in the large ion lithophile elements and depleted in High Field Strength Elements. The basalts are depleted in Zr and Hf while the andesites are enriched with Zr and Hf relative to the middle rare earth elements. Compared to previously studied Ancestral Cascade arc samples, Sagehen region basalts have lower 143Nd/144Nd isotopic values that do not correspond to proposed mantle-lithosphere mixing lines, while the andesite samples appear to represent the interplay of these two components on a 87Sr/86Sr vs. 143Nd/144Nd. The trace element data and isotopic plots suggest that the melts that produced the basalts are from subduction modified mantle wedge peridotites that ponded near the base of the lithosphere similar to the generation of other subduction related calc-alkaline lavas along convergent continental margins. The andesitic samples appear to be the result of further modification through crustal assimilation as seen in the higher isotopic Sr contents in the andesites and Ce/Smpmn vs. Tb/Ybpmn plots. Finally, the proposed map units from Sylvester & Raines (2007) were found to contain various geochemical facies based on the samples collected indicating that some map units may have to be redefined or sub-divided.

Submitted by Cleide Dantas (cleidedantas@ufpa.br) on 2014-10-07T12:17:57Z No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_MapeamentoMagnetizacaoAparente.pdf: 16704480 bytes, checksum: 6fe5c2fb634108450df79f55876738e4 (MD5) / Approved for entry into archive by Ana Rosa Silva (arosa@ufpa.br) on 2014-10-08T14:31:01Z (GMT) No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_MapeamentoMagnetizacaoAparente.pdf: 16704480 bytes, checksum: 6fe5c2fb634108450df79f55876738e4 (MD5) / Made available in DSpace on 2014-10-08T14:31:01Z (GMT). No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_MapeamentoMagnetizacaoAparente.pdf: 16704480 bytes, checksum: 6fe5c2fb634108450df79f55876738e4 (MD5) Previous issue date: 2007 / Apresentamos um novo método de mapeamento de magnetização aparente no plano horizontal que combina a minimização da entropia de primeira ordem com a maximização da entropia de ordem zero dos contrastes de magnetização estimados. O modelo interpretativo é uma malha de prismas verticais justapostos ao longo de ambas as direções horizontais. Presumimos que o topo e a base das fontes magnéticas são planos e horizontais e estimamos os contrastes de magnetização dos prismas. A minimização da entropia de primeira ordem favorece soluções de bordas abruptas e a maximização da entropia de ordem zero evita a tendência de a fonte estimada ser um único prisma. Desta forma, uma combinação judiciosa de ambos os vínculos pode levar a soluções caracterizadas por regiões de contraste de magnetização virtualmente constantes separadas por descontinuidades abruptas. Aplicamos este método a dados sintéticos produzidos por intrusões simuladas em sedimentos e que apresentam topo e base planos e horizontais. Comparando nossos resultados com aqueles obtidos pelo vínculo da suavidade, mostramos que ambos os métodos produzem uma boa e equivalente localização do centro das fontes. Todavia, a regularização entrópica delineia as bordas do corpo com maior detalhe. Ambos os vínculos (suavidade e regularização entrópica) foram aplicados a uma anomalia real sobre um escarnito magnético em Butte Valley, Nevada, Estados Unidos. A regularização entrópica produziu uma estimativa da distribuição de magnetização com bordas mais abruptas, menor volume e maiores valores de magnetização aparente comparados àqueles produzidos pelo vinculo da suavidade. / We present a new apparent-magnetization mapping method on the horizontal plane that combines the minimization of the first-order entropy with the maximization of the zeroth-order entropy of the estimated magnetization contrasts. The interpretation model is a grid of vertical, juxtaposed prisms in both horizontal directions. We assume that the top and the bottom of the magnetic sources are flat and horizontal and estimate the prisms' magnetization contrasts. The minimization of the first-order entropy favors solutions presenting sharp borders, and the maximization of the zeroth-order entropy prevents the tendency of the source estimate to become a single prism. Thus, a judicious combination of both constraints may lead to solutions characterized by regions with virtually constant estimated magnetization contrasts separated by sharp discontinuities. We apply our method to synthetic data from simulated intrusive bodies in sediments that present flat and horizontal tops. By comparing our results with those obtained with the smoothness constraint, we show that both methods produce good and equivalent locations of the sources' central positions. However, the entropic regularization delineates the boundaries of the bodies with greater detail. Both the proposed and the smoothness constraints are applied to a real anomaly over a magnetic skarn in Butte Valley, Nevada, USA. The entropic regularization produced an estimated magnetization distribution with sharper boundaries, smaller volume, and higher apparent magnetization as compared with the results produced by the smoothness constraint.

The structure and regional tectonic setting of an exhumed, 9.3-km long, left-lateral strike-slip fault zone eludicates processes of growth, linkage, and termination for strike-slip fault zones in granitic rocks. The Gemini fault zone is composed of three steeply dipping, southwest-striking, noncoplanar segments that nucleated and grew along preexisting joints. The fault zone has a maximum slip of 131 m and is an example of a segmented, hard-linked fault zone in which geometrical complexities of the faults and compositional variations of protolith and host rock resulted in nonuniform slip orientations, complex interactions at fault segments, and an asymmetric slip-distance profile. Regional structural analysis shows that joints and left-lateral fault zones have accommodated slip within a 4.8-km wide, right-lateral monoclinical kink band with vertical fold axes and northwest-striking axial surfaces. Geometric modeling of the kink band indicates that as little as 1.1 km of right-lateral displacement across the kink band may have produced the observed slip on kilometer-scale faults within the kink band.

The assemblage of ca. 6–4 Ma volcanic rocks exposed at the Sagehen Research station in the Truckee-Tahoe region of the northern Sierra Nevada, United States, is interpreted to be, within the Ancestral Cascades volcanic arc, a Lassen-type stratovolcano complex. Sagehen is of particular importance because it is one of the few Tertiary arc volcanic centres in California which has not been heavily glaciated during the Pleistocene. The volcanic rocks are variably porphyritic or aphanitic, including abundant plagioclase with clinopyroxene and amphibole. The rocks range from basalt to basaltic-andesite to andesite in composition. Basalts are olivineand clinopyroxene-bearing with minor phenocrysts of plagioclase. The basaltic-andesites are primarily pyroxene bearing while the andesites contain pyroxene-, plagioclase- and hornblende porphyritic phases. Sagehen arc lavas are calc-alkaline and enriched in the large ion lithophile elements and depleted in High Field Strength Elements. The basalts are depleted in Zr and Hf while the andesites are enriched with Zr and Hf relative to the middle rare earth elements. Compared to previously studied Ancestral Cascade arc samples, Sagehen region basalts have lower 143Nd/144Nd isotopic values that do not correspond to proposed mantle-lithosphere mixing lines, while the andesite samples appear to represent the interplay of these two components on a 87Sr/86Sr vs. 143Nd/144Nd. The trace element data and isotopic plots suggest that the melts that produced the basalts are from subduction modified mantle wedge peridotites that ponded near the base of the lithosphere similar to the generation of other subduction related calc-alkaline lavas along convergent continental margins. The andesitic samples appear to be the result of further modification through crustal assimilation as seen in the higher isotopic Sr contents in the andesites and Ce/Smpmn vs. Tb/Ybpmn plots. Finally, the proposed map units from Sylvester & Raines (2007) were found to contain various geochemical facies based on the samples collected indicating that some map units may have to be redefined or sub-divided.

Contrary to popular belief, the L.A. region is more of a desert than a tropical oasis. Little rainfall during the winter months and practically no rainfall during the summer months is characteristic of Southern California’s desert-like weather patterns. Due to these low precipitation levels, water is considered the most important commodity in the Los Angeles region. Prior to 1900, the inhabitants of this area were fully aware of the importance of water. Most settlements were established near water sources and had adopted various techniques and constructed small-scale dams to conserve and reuse rainwater. Yet these measures were not sufficient to sustain large populations during drought conditions. Most settlers were forced to seek other areas where more reliable sources of water were found. The construction of early engineering feats like the Los Angeles aqueduct quickly changed prior perceptions of the region’s potential. Such systems allowed for cheap and previously inaccessible water to flow to the abundant land, spurring an unprecedented population and agricultural boom. For decades, the construction of more aqueducts and canals provided a sufficient amount of water to meet the demand in the region’s growing agricultural and financial economy. As the abundance of land and favorable weather attracted more businesses and industries into the region, more and more homes were built to accommodate the workforce. By 1936, the Hoover Dam had been built and California had signed and agreed to the Colorado River Compact, which granted Southern California 4.4 million acre-feet annually of the Colorado River’s water. As a result, relatively cheap water was able to meet the demands, thus catapulting California’s agricultural industry and residential development.