Widespread Active Detachment Faulting and Core Complex Formation Near 13 Degrees 30'N on the Mid-Atlantic Ridge

摘要(0649566史密斯)的学术成就：这项研究重建了最近在中大西洋海脊13o N区域大洋扩张轴线上和洋面外观察到的大量大洋核心复合体的形成和发展。这项研究包括两个主要部分：水深和地磁数据的简化、分析和模拟，以澄清海脊的扩展历史，并建立单个岩心复合体的特征和开放历史；以及这些数据与海脊上显示强烈和连续地震活动的其他地区和岩心复杂形态的相关性。第二个目标应该对核心复合体的形成产生新的见解，并有可能显著提高我们对核心复合体是如何启动和演化的理解。这将有助于我们了解大型滑脱断层的性质和运行机制，以及它们为什么会启动和为什么不活跃。广泛的影响：这项工作将支持研究生的培养，研究成果将酌情纳入课堂工作。研究结果还将用于高中生对深海海底和板块构造的研究。

Abstract (0649566 Smith)Intellectual Merit: This research reconstructs the formation and development of the multitude of oceanic core complexes recently observed on and off the mid-ocean spreading axis in the 13oN region of the Mid-Atlantic Ridge. The research has two primary components: reduction, analysis, and modeling of the bathymetry and magnetic data to clarify ridge spreading history and establish the characteristics and opening history of individual core complexes; and the correlation of these data with other regions on the ridge that show intense and continuous seismicity and core complex morphology. The second objective should yield new insights about core complex formation and has the potential to improve significantly our understanding of how core complexes are initiated and evolve. This should help us to understand the nature and mechanisms of operation of large detachment faults and why they initiate and why they become inactive.Broader Impacts: The work will support graduate student training and research results will be included in class work, where applicable. Results will also be used in the exposure of high school students to the study of the deep seafloor and plate tectonics.