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Fault slip-rates and Coulomb stress interactions in the intersection zone of the Hope, Kelly and Alpine Faults, South Island, New Zealand

Fault slip-rates and Coulomb stress interactions in the intersection zone of the Hope, Kelly and Alpine Faults, South Island, New Zealand

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1016/j.tecto.2022.229593. This is version 1 of this Preprint.

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Authors

Jessie L. Vermeer , Mark Quigley, Rob Langridge, Brendan Duffy, Zoe K Mildon , Manuel-lukas Dier...  more

Abstract

The Hope Fault is a major strike-slip plate boundary fault in the Marlborough Fault Zone of New Zealand’s South Island that transfers slip between the Alpine Fault and Hikurangi subduction zone. We use lidar-based geomorphic and fault mapping, and optically stimulated luminescence (OSL; quartz) and infrared stimulated luminescence (IRSL; feldspar) dating of fault-proximal sedimentary deposits to constrain post-last glacial slip-rates for the Taramakau section of the Hope Fault and the Kelly Fault. Dextral slip-rates on the central Hope Fault (12-15 mm/yr) decrease westward from 5.6 (+2.0/-0.8) mm/yr to 1.7 (+1.0/-0.5) mm/yr. Dextral slip-rate...  more

DOI

https://doi.org/10.31223/X5ZS82

Subjects

Earth Sciences, Geology, Geomorphology, Physical Sciences and Mathematics, Tectonics and Structure

Keywords

Alpine fault, Hope fault, slip-rate, Coulomb stress modelingfault intersection zone, Hope fault, slip-rate, Coulomb stress modeling, fault intersection

Dates

Published: 2022-02-24 13:58

Last Updated: 2022-02-24 18:58

License

CC0 1.0 Universal - Public Domain Dedication