Browsing by Subject "Chihuahua, Mexico"
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Item Geology of Mina Plomosas area, Chihuahua, Mexico(1962-06) Bridges, Luther Wadsworth, 1931-; DeFord, Ronald K. (Ronald Kinnison), 1902-1994Three 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.Item In search of a voice(2013-05) Corral, Adriana Cristina; Williams, Jeff, M.F.A.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.