Thrust Fault Geometry and Implications for Rupture Segmentation in the Western Central Valley

Feb 11, 2026

300 likes | 434 Vues

This study explores the complexity of thrust fault geometry beneath the Western Central Valley, focusing on implications for laterally continuous ruptures. It discusses right-stepping patterns, discrete structural segments, and en echelon steps that may act as rupture barriers. Additionally, it examines restraining stepover mechanics and their influence on rupture length, highlighting factors like thrust slip rate in relation to strike-slip rate. The findings underscore the need for updated models to account for the intricate fault-propagation folding above the Southern Midland Fault.

gotzon

Télécharger la présentation

Thrust Fault Geometry and Implications for Rupture Segmentation in the Western Central Valley

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Thrust Fault Geometry beneath the Western Central Valley, andImplications for LaterallyContinuous RupturesJeff Unruh, FWLA

Implications for Rupture Segmentation Right-stepping pattern - Discrete structural segments - En echelon steps = rupture barriers • Restraining stepovers - Rupture length limited by stepover dimensions - Thrust slip rate = f (strike - slip rate)

Seismic Source Zones for the Sacramento-San Joaquin Delta William Lettis & Associates, Inc.
Fault-Propagation Folding Above the Southern Midland Fault