Publication Date:
2021-09-30
Description:
Abstract
Description:
This dataset provides friction data from ring-shear tests (RST) for a quartz sand (“G12”). This material is used in various types of analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam for simulating brittle rocks in the upper crust. The material has been characterized by means of internal friction coefficients µ and cohesions C. According to our analysis the material shows a Mohr-Coulomb behaviour characterized by a linear failure envelope and peak, dynamic and reactivation friction coefficients of µP = 0.69, µD = 0.55 and µR = 0.62, respectively. Cohesions C are in the order of 50 – 110 Pa. The material shows a minor rate-weakening of 〈1% per ten-fold change in shear velocity.Further information about materical characteristics, measurement procedures, sample preparation, the RST (Ring-shear test) and VST (Velocity stepping test) procedure, as well as the analysed method is proviced in the data description file. The list of files explains the file and folder structure of the data set.
Keywords:
analogue models of geologic processes
;
EPOS
;
Multi-scale Laboratories
;
property data of analogue modelling materials
;
software tools
;
EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS
;
EARTH SCIENCE SERVICES 〉 DATA ANALYSIS AND VISUALIZATION 〉 CALIBRATION/VALIDATION
;
earth interior setting 〉 crust setting 〉 continental-crustal setting 〉 upper continental crustal setting
;
deformation 〉 fracturing
;
fault
;
tectonic and structural features
;
Sand 〉 Quartz Sand
;
Ring-shear tester
;
Matlab (Mathworks)
;
Force sensor
;
Friction coefficient
;
Cohesion
Type:
Dataset
Format:
3 Files
Format:
application/octet-stream
Format:
application/octet-stream
Format:
application/octet-stream
