U.S.-Argentina Dissertation Enhancement: Basement-Cored Systematics; Structural Study of Sierra de Hualfin and Adjacent Uplifts, Sierras Pampeanas, NW Argentina

Davis 9908622本次美国-阿根廷学位论文强化研究提案由皮拉尔E.加西亚，亚利桑那大学，在博士的赞助下，乔治H。戴维斯 Garcia女士将与阿根廷布宜诺斯艾利斯大学的Ernesto Cristallini博士合作。 她将对阿根廷西北部Sierras Pampeanas的一个暴露良好的山脉进行详细研究，以增加我们对基底核隆起山脉形成的理解。基底核隆起是不规则的构造产物，因为它们发生在距离活动板块边缘数百公里的地方，而大多数山脉通常都是在那里形成的，并且因为它们涉及大陆的脆性断层和褶皱，地壳中浅层的结晶岩。 这些隆起的这种异常性质使人们对它们的运动学和形成动力学知之甚少。 选定的地点很重要，因为它有暴露的地下室盖接触，这将允许在一个关键的界面观察。 更好地了解这些范围的结构是至关重要的，以评估这些构造要素的形成，并可能导致有用的几何和运动学模型。 对前陆基底隆起的认识是构造地质学中的一个重要问题。

Davis9908622This US-Argentina dissertation enhancement research proposal was submitted by Ms. Pilar E. Garcia, University of Arizona, under the sponsorship of Dr. George H. Davis. Ms. Garcia will work with Dr. Ernesto Cristallini of the Universidad de Buenos Aires in Argentina. She will be doing a detailed study of a well-exposed range in the Sierras Pampeanas of Northwest Argentina, to increase our understanding of the formation of basement-cored uplift mountain ranges.Basement-cored uplifts are irregular tectonic products because they occur several hundred kilometers from active plate margins where most mountains are usually formed, and because they involve brittle faulting and folding of continental, crystalline rocks at shallow levels within the crust. This anomalous nature of these uplifts makes their kinematics and dynamics of formation poorly understood. The chosen site is important because it has exposure of the basement-cover contact, which will permit observation at a critical interface. A better understanding of the structure of these ranges is critical to evaluate the formation of these tectonic elements and may lead to useful geometric and kinematic models. The understanding of foreland basement uplifts is a significant problem in structural geology.***