Structural study of intra‐oceanic thrusting in the KLamath Mountains, northern California: Implications on accretion geometry

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Abstract
The kinematics of the basal intra‐oceanic thrust of the Trinity, Preston Peak, Seiad and Josephine ultramafic bodies of the Klamath Mountains are deduced from microstructural and mineral preferred orientation studies. When corrected of possible postthrusting rotations, these kinematics are thought to reflect the paleoconvergence geometry of the Pacific plate relative to the North American continent at the time of intra‐oceanic thrusting. We first detail the kinematics of thrusting for each studied massif. These results are then integrated in a plate tectonics reconstruction, and a model of continuous NE‐SW convergence for Mesozoic times is proposed.