Three previously unrecognized outcrops of pre-Carboniferous rock in the Mina Plomosas - Placer de Guadalupe area have a total area of slightly less than four square miles. Six units, ranging in age from Ordovician to Jurassic, are mapped within the Plomosas Formation named by Burrows in 1909; the total thickness is about 8,000 feet. The lower 2,000-foot section of Ordovician, Silurian, Devonian, Mississippian, and Pennsylvanian rock, composed predominantly of limestone, resembles contemporaneous formations in west Texas. The 2,000-foot to 3,000-foot section between Pennsylvanian and Late Jurassic rock, composed predominantly of siltstone and conglomerate, consists of a 500-foot to 1,000-foot Permian (Wolfcampian-Leonardian) sequence overlain by beds of undetermined age. The Permian sequence includes a reef. The 3,000-foot section of Late Jurassic rock is composed of shale, sandstone, and limestone. The area lay to the north of the main Ouachita trend, and Paleozoic tectonism was less intense than in the Marathon uplift. Nevertheless, angular unconformities within the Permian sequence indicate Permian movements. Laramide tectonism was extreme, with major overthrusting toward the west. Two large sections are upside-down. Crustal shortening on the order of ten miles can be proved near Mina Plomosas. Probably the sericite and microspar (finely recrystallized limestone), in the Paleozoic and Jurassic rocks, are products of incipient metamorphism resulting primarily from Laramide deformation. Mina Plomosas is an important lead-zinc mine. A little placer gold is found at Placer de Guadalupe. All mineralization in the Placer de Guadalupe - Mina Plomosas area is thought to be Tertiary in age. The petroleum potential of Chihuahua is still untested. / text

No description available.

As a native of El Paso, Texas my work reflects on autobiographical narratives and violent events that have taken place along the US-Mexico border. For the past two years my research and artwork have focused on the Femicidios (women murders) in Ciudad Juárez (Chihuahua, Mexico). The specific case of Campo Algodón (2001), where eight young women were found in a mass grave in the center of the city, led me to investigate and produce a group of works in reference to loss, justice, memory and erasure. My purpose is to create works that inform the viewer of something that has occurred and continues to happen. My artistic approach involves concept, research and process, which eventually result in installations and sculptural objects. My aim in this thesis is to outline my research methodology and explore the intersections of my work with theoretical discourses in art, human rights, and neoliberalism. With a minimalist aesthetic, my work often masks the labor intensive process involved in research and production. By mining the archives of classified documents used in international human rights courts, I use this material as the base for my work. The nature of this material often dictates its visibility or illegibility as a classified source that cannot be revealed. This body of work requires collaboration across disciplines in which the research and communication with specialists have helped in the formation of each piece. / text

Thesis (M.A.) B.Y.U. Div. of Religion.

Thesis (M.S.)--Brigham Young University. Dept. of Sociology, 2007. / Includes bibliographical references (p. 87-89).

Thesis (M.A.)--University of California, May 1917. / Typewritten (carbon copy). Translations of documents bearing upon the history of the missions at La Junta de los Ríos, 1715-1753: leaves 39-98. Description based on print version record. Bibliography: leaves [99-121].

The Mountain Pima of the Sierra Madre Occidental of Chihuahua, Mexico, utilize a variety of domesticated and nondomesticated resources. Part of their agricultural system consists of shifting, or swidden, cultivation on steep hillsides. Wild edible plants contribute significant amounts of vitamins and minerals to the diet on a seasonal basis. The drought of 1988 caused a decrease in the availability of many resources, but an increase in availability of roots of saraviqui (Prionosciadium townsendii). A dynamic, nonlinear optimization study of Mountain Pima diet included requirements for adequate amounts of energy, protein, calcium, and vitamins A and C. Oxalate content of several plant foods and seasonal variation in resource availability were incorporated into the study. Two methods were compared: time minimization and a nutrient indexing method minimizing the product of the absolute value of the natural logarithm of the ratio of recommended intake to actual intake rates. This method allowed simultaneous optimization of several different parameters. The nutrient indexing model matched the actual diet of the Mountain Pima somewhat better than the traditional energy minimization model. It predicted higher use of noncultivated plant species and of animal resources than the time minimization model. Analyses were conducted for years of adequate rainfall and for the drought year. A list of 612 plant species collected in the community of Nabogame is also included.

Examines the processes of disappearance during the late 16th and 17th centuries--through assimilation or extermination--of the native Indians encountered by Spaniards in present-day Chihuahua, Mexico.

No description available.

Master of Landscape Architecture / Department of Landscape Architecture/Regional and Community Planning / Huston Gibson / The issues infested in urban slum communities are many, of which I had no problem indentifying a dilemma specific to my interests in landscape architecture and socially equitable places. However, sustainable solutions specific to these dynamic urban forms and communities are unfamiliar academic territory. Extreme levels of poverty fostered in these communities cause deficiencies in a child’s development, who are often without access to a formal, structured education system (UNDP, 1999). Public spaces are particularly stimulating environments for youth learning and development, but most urban environments in shanty towns host a milieu of violence and crime, making most public streets and vacant lots unsafe. These conditions are ripe for visionary designers to intervene, improving the physical aspects of urban public spaces and specifically bettering the quality of life for children living in these communities. Answering this question required literature research and precedent studies, which was important for developing a thorough understanding of developmental theory as it relates to socio-economically disadvantaged children. By focusing my studies on public spaces in the neighborhood Vistas del Cerro Grande in Chihuahua, México, I began to understand the cultural idiosyncrasies specific to people living in urban shantytowns. Data collected from the neighborhood via surveys, interviews, community meetings, and an auto-ethnographic video study with fifth and sixth grade students provided an introduction to the community and the larger themes and objectives for future public space design. Visiting comparable communities in México City, México deepened my understanding as I was able to observe the daily lives of México City residents with diverse socio-economic statuses, hear their individual perspectives on the history and cultures, and relate to their frustrations with current political, economic, and societal systems. The methodologies described above culminated in a design typology specific to Vistas del Cerro Grande, consisting of public streets, pedestrian access ways, plazas, and vacant lots. These types form the backbone of my research report, which represents an evidence-based design palette of purpose-oriented amenities for positive childhood development in shanty town public spaces. The typology caters to the specific needs of the Vistas del Cerro Grande community, as identified in the research.