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

davis9908622美国亚利桑那大学的Pilar E. Garcia女士在George H. Davis博士的赞助下提交了这份美国-阿根廷论文增强研究计划。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的西拉-帕玛尼亚山脉的一个裸露的山脉进行详细的研究，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，因为它们发生在离大多数山脉通常形成的活动板块边缘几百公里的地方，而且它们涉及地壳内浅层的大陆结晶岩的脆性断裂和褶皱。这些隆起的异常性质使得人们对它们的运动学和地层动力学知之甚少。所选择的地点很重要，因为它有暴露的地下室覆盖接触，这将允许在一个关键的界面观察。更好地了解这些范围的构造对于评估这些构造元素的形成至关重要，并可能导致有用的几何和运动学模型。对前陆基底隆升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.***