Data from: Gouge stability controlled by temperature elevation and obsidian addition in basaltic faults and implications for moonquakes
Data files
Dec 06, 2023 version files 3.18 MB
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Data_S1.zip
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README.md
Abstract
Basalt is a major component of the earth and moon crust. Mineral composition and temperature influence frictional instability and thus the potential for seismicity on basaltic faults. We performed velocity-stepping shear experiments on basalt gouges at a confining pressure of 100 MPa, temperatures in the range 100-400°C and with varied obsidian contents of 0-100 wt.% under wet/dry conditions to investigate the frictional strength and stability of basaltic faults. We observe a transition from velocity-neutral to velocity-weakening behaviors with increasing obsidian content. The frictional stability response of the mixed obsidian/basalt gouges is characterized by a transition from velocity-strengthening to velocity-weakening at 200°C and another transition to velocity-strengthening at >300°C. Conversely, frictional strengths of the obsidian-bearing gouges are insensitive to temperature and wet/dry conditions. These results suggest that obsidian content dominates the potential seismic response of basaltic faults with the effect of temperature controlling the range of seismogenic depths. These observations contribute to a better understanding of the nucleation mechanism of shallow seismicity in basaltic faults.
README: Data from: Gouge stability controlled by temperature elevation and obsidian addition in basaltic faults and implications for moonquakes
https://doi.org/10.5061/dryad.bvq83bkfn
Description of the data and file structure
**Data S1: **The friction-displacement data for all shear experiments on simulated basalt, obsidian, basalt-obsidian mixed gouges.
File lists (files found within DataS1.zip)
Cao_et_al_2023_LC1.xlsx
Cao_et_al_2023_LC2.xlsx
Cao_et_al_2023_LC3.xlsx
Cao_et_al_2023_LC4.xlsx
Cao_et_al_2023_LC5.xlsx
Cao_et_al_2023_LC6.xlsx
Cao_et_al_2023_LC7.xlsx
Cao_et_al_2023_LC8.xlsx
Cao_et_al_2023_LC9.xlsx
File description
Cao_et_al_2023_LC1.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC1.**
Cao_et_al_2023_LC2.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC2.**
Cao_et_al_2023_LC3.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC3.**
Cao_et_al_2023_LC4.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC4.**
Cao_et_al_2023_LC5.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC5.**
Cao_et_al_2023_LC6.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC6.**
Cao_et_al_2023_LC7.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC7.**
Cao_et_al_2023_LC8.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC8.**
Cao_et_al_2023_LC9.xlsx** – The shear displacement (column 1) and coefficient of friction (column 2) data for Experiment LC9.**