Mesozoic tectonic inversion in the Neuquen Basin of west-central Argentina produced two main fault systems: (1) deep faults that affected basement and syn-rift strata where preexisting faults were selectively reactivated during inversion based on their length and (2) shallow faults that affected post-rift and syn-inversion strata. Normal faults formed at high angle to the reactivated half-graben bounding fault as a result of hangingwall expansion and internal deformation as it accommodated to the shape of the curved footwall during oblique inversion. Contraction during inversion was initially accommodated by folding and internal deformation of syn-rift sedimentary wedges, followed by displacement along half-graben bounding faults. We suspect that late during inversion the weight of the overburden inhibited additional fault displacement and folding became the shortening-accommodating mechanism. A Middle Jurassic inversion event produced synchronous uplift of inversion structures across the central Neuquen Basin. Later inversion events (during Late Jurassic, Early Cretaceous, and Late Cretaceous time) produced an "inversion front" that advanced north of the Huincul Arch. Synchroneity of fault reactivation during the Callovian inversion event may be related to efficient stress transmission north of the Huincul Arch, probably due to easy reactivation of low-dip listric fault segments. This required little strain accumulation along "proximal" inversion structures before shortening was transferred to more distal structures. Later inversion events found harderto- reactivate fault segments, resulting in proximal structures undergoing significant inversion before transferring shortening. The time between the end of rifting and the different inversion events may have affected inversion. Lithosphere was probably thermally weakened at the onset of the initial Callovian inversion phase, allowing stress transmission over a large distance from the Huincul Arch and causing synchronous inversion across the basin. Later inversion affected a colder and more viscous lithosphere. Significant strain needed to accumulate along proximal inversion structures before shortening was transferred to more distal parts of the basin. Timing of inversion events along the central Neuquen Basin suggest a megaregional control by right-lateral displacement motion along the Gastre Fault Zone, an intracontinental megashear zone thought to have been active prior to and during the opening of the South Atlantic Ocean.

Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 379-392). Available also in a digital version from Dissertation Abstracts.

Within the historically conservative city of Córdoba, Argentina, LGBTQ activism has grown in the past year during a period in which the movement has achieved significant advances nationwide. This thesis examines how a new LGBTQ organization, Encuentros por la Diversidad en Córdoba, formed its identity by creating boundaries between itself and other organizations in Argentina through a frame of diversity and horizontalism, in which members have an equal opportunity to participate. While the group was able to maintain diversity through its activities, its attempts to create and follow a horizontal structure were not successful. Because of this failure, hierarchies based on members’ social and political capital developed within the group, despite the organization’s commitment to equality. / text

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The wine industry in Mendoza exemplifies the ways that cooperatives in Latin America cope with globalization and neoliberal economic reform. Cooperatives are economic organizations that bridge social, political and economic worlds for their members, and also escort their members from the past into the present. In the wine industry, technological advancement is necessary to compete in a global market, but many local cooperatives resist investing in this type of change. The regional cooperative faces the challenge of providing a buyer for its member cooperatives while also selling a quality product to consumers. The financial success of the regional cooperative position it to provide its members economic support and possibly to foster a restructuring of wine production in Argentina.

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Diss. Göteborg : University, 2002.

Thesis (Ph.D.). / Written for the Dept. of Anthropology. Title from title page of PDF (viewed 2008/05/09). Includes bibliographical references.