Articles | Volume 12, issue 1
Solid Earth, 12, 141–170, 2021
https://doi.org/10.5194/se-12-141-2021

Special issue: Faults, fractures, and fluid flow in the shallow crust

Solid Earth, 12, 141–170, 2021
https://doi.org/10.5194/se-12-141-2021
Research article
25 Jan 2021
Research article | 25 Jan 2021

Distribution, microphysical properties, and tectonic controls of deformation bands in the Miocene subduction wedge (Whakataki Formation) of the Hikurangi subduction zone

Kathryn E. Elphick et al.

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Latest update: 04 Dec 2022
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Short summary
We analysed a sedimentary rock package located in Castlepoint, New Zealand, to test the control of the tectonic setting on the observed deformation structures. In extension and contraction, we observed faults and small fault-like structures characterised by complex spatial patterns and a reduction in porosity and grain size compared with the host rock. With these properties, the structures are likely to act as barriers to fluid flow and cause compartmentalisation of the sedimentary sequence.