Persistent Identifier
|
doi:10.18710/TM18UZ |
Publication Date
|
2022-01-05 |
Title
| Replication data for "Tectonic evolution of the Indio Hills segment of the San Andreas fault in southern California" |
Alternative Title
| Field photographs and structural measurements from fieldwork along the San Andreas Fault Zone in the Indio Hills, southern California, in February-March 2017 |
Author
| Koehl, Jean-Baptiste P. (University of Oslo) - ORCID: 0000-0001-7189-1988 |
Point of Contact
|
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Koehl, Jean-Baptiste P. (University of Oslo) |
Description
| Field photographs and structural measurements from fieldwork along the San Andreas Fault Zone in the Indio Hills, southern California, in February-March 2017. The text files containing the structural data include measurements of strike in the first column and dip in the second column.
Transpressional uplift domains of inverted Miocene–Pliocene basin fill along the San Andreas fault zone in Coachella Valley, southern California, are characterized by fault linkage and segmentation and deformation partitioning. The Indio Hills wedge-shaped uplift block is located in between two boundary fault strands, the Indio Hills fault to the northeast and the Banning fault to the southwest, which merge to the southeast. Uplift commenced about 2.2–0.76 million years ago and involved either three separate and/or progressive fold and faulting stages caused by a change from distributed strain, via partly partitioned to fully partitioned right-slip and reverse displacement on the bounding faults when approaching the fault junction, or single-stage partly partitioned transpression. Major fold structures in the study area include oblique, right-stepping, partly overturned en echelon macro-folds that tighten and bend into parallelism with the Indio Hills fault to the east and become more open towards the Banning fault to the west, thus indicating a close relationship of the macro-folds with the Indio Hills fault and a late initiation of the Banning fault. Sets of strike-slip to reverse step-over and right- and left-lateral cross faults and conjugate kink bands affect the entire uplifted area, and locally offset the en echelon macro-folds. Comparison with the Mecca Hills and Durmid Hills uplifts farther southeast in Coachella Valley reveals notable similarities, but also differences in fault architectures, spatial and temporal evolution, and deformation mechanisms, indicating that the Indio Hills uplift block is at an early stage of evolution of a ladder structure, in contrast to the more evolved Durmid Hills. (2021-12-22) |
Subject
| Earth and Environmental Sciences |
Keyword
| Faults
Folds
Bedding surfaces
San Andreas Fault Zone
California
Fieldwork |
Related Publication
| Koehl, J.-B. P., Bergh, S. G. and Sylvester, A. G.: Tectonic evolution of the Indio Hills segment of the San Andreas fault in southern California, submitted. |
Language
| English |
Producer
| University of Oslo (UiO) https://www.uio.no/english/ |
Contributor
| Data Collector : Brown, Jack
Data Collector : Bergh, Steffen
Data Collector : Sylvester, Art
Research Group : Centre for Earth Evolution and Dynamics |
Funding Information
| The Research Council of Norway: 228107 |
Distributor
| University of Oslo (UiO) https://dataverse.no/dataverse/uio |
Depositor
| Koehl, Jean-Baptiste P. |
Deposit Date
| 2021-12-22 |
Date of Collection
| Start Date: 2017-02-20 ; End Date: 2017-03-10 |
Data Type
| Structural field measurement; Field photographs |