Collaborative Research: Geodynamics of the Eastern California Shear Zone

东加州剪切带是太平洋-北美板块边界的主要组成部分，容纳了该边界上总应变的20%-25%，在圣安德烈亚斯系统和剪切带之间几乎没有变形。圣安德烈亚斯系统传统上被认为标志着太平洋板块和北美板块之间的板块边界，但东加州剪切带的性质存在争议，从它完全类似于板块边界到反映北美板块边缘内的局部效应的假设各不相同。这个项目打算将新的GPS观测和地球动力学模型结合起来，以检验这些不同的假设。预计结果将更好地阐明加州东部剪切带在太平洋板块-北美板块构造中的作用。

0003396Furlong0003740DixonThe Eastern California Shear Zone serves as a major component of the Pacific-North American plate boundary, accommodating 20-25% of the total strain along this boundary, with little deformation occurring between the San Andreas system and the shear zone. The San Andreas system is traditionally considered to mark the plate boundary between the Pacific plate and the North American plate, but the nature of the Eastern California Shear Zone is controversial, with hypotheses varying between it being completely analogous to a plate boundary to reflecting local effects within the edge of the North American plate. This project intends to combine new GPS observations and geodynamical modeling to test these various hypotheses. Results are expected to better clarify the role of the Eastern California Shear Zone in Pacific plate - North American plate tectonics.