the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
To what degree the geometry and kinematics of accretionary wedges in analogue experiments is dependent on material properties
Ziran Jiang
Caiwei Fan
Yu He
Dong Lai
Shugen Liu
Xinjian Wang
Luba Jansa
Abstract. Cohesion and friction coefficients are fundamental parameters of granular materials used in analogue experiments. Thus, to test the physical characteristics and mechanical behaviour of the materials used in the experiments will help to better understand into what degree the results of experiments of geological processes depend on the material properties. Our test suggests significant differences between quartz sand and glass bead, in particular the shape factors (~ 1.55 of quartz sand to ~ 1.35 glass bead, angular to rounded) and grain sorting (moderately to well sorted). The glass beads show much better grain sorting and smaller shape factors than the quartz sand. Also they have smaller friction coefficient (~ 0.5 to ~ 0.6) and cohesion (20–30 Ma to 70–100 Ma), no matter of the grain size in our tested samples. The quartz sand shows much smaller friction coefficient (~ 0.6 to ~ 0.65), and smaller cohesion (~ 70 Pa to ~ 100 Pa) than that of smaller grain size sand. We have conducted four sets of analogue experiments with three repeats at the minimum. Our models show that material properties have important influence on the geometry and kinematics of the accretionary wedge. Although the difference in geometries are small, models with larger grain size develop wedges with higher wedge height, larger taper, shorter wedge length and less number of faults under the same amount of bulk shortening. In particular, models with basal detachment (even with 1 mm thickness), show significant difference in geometry and kinematics with that of quartz sand. We thus argue that the geometry and kinematics of the wedge appear to be significantly influenced by relative brittle and ductile strengths, and, to a lesser degree by the layering anisotropy. The basal detachment (even of tiny thickness) determines the first-order control on the location and development of accretionary wedge, in a contrast to the physical properties of brittle materials.
This preprint has been withdrawn.
-
Withdrawal notice
This preprint has been withdrawn.
-
Preprint
(2471 KB)
Ziran Jiang et al.
Interactive discussion


-
SC1: 'Some comments on ring shear testing results: presentation and interpretation', Matthias Rosenau, 14 Aug 2018
-
AC1: 'Supplementary data sets', Bin DENG, 14 Aug 2018
-
SC2: 'Data availability', Matthias Rosenau, 15 Aug 2018
-
SC2: 'Data availability', Matthias Rosenau, 15 Aug 2018
-
AC2: 'Fig.10 Natural example of the Longmenshan fold-thrust-belt.', Bin DENG, 14 Aug 2018
-
RC1: 'Revision on the Manuscript se-2018-45 by Ziran Jiang et al.', Anonymous Referee #1, 15 Aug 2018
-
AC3: 'Supplementary Data Figures 1-7', Bin DENG, 25 Aug 2018
-
RC2: 'Review and Editorial decision', Federico Rossetti, 06 Sep 2018
Interactive discussion


-
SC1: 'Some comments on ring shear testing results: presentation and interpretation', Matthias Rosenau, 14 Aug 2018
-
AC1: 'Supplementary data sets', Bin DENG, 14 Aug 2018
-
SC2: 'Data availability', Matthias Rosenau, 15 Aug 2018
-
SC2: 'Data availability', Matthias Rosenau, 15 Aug 2018
-
AC2: 'Fig.10 Natural example of the Longmenshan fold-thrust-belt.', Bin DENG, 14 Aug 2018
-
RC1: 'Revision on the Manuscript se-2018-45 by Ziran Jiang et al.', Anonymous Referee #1, 15 Aug 2018
-
AC3: 'Supplementary Data Figures 1-7', Bin DENG, 25 Aug 2018
-
RC2: 'Review and Editorial decision', Federico Rossetti, 06 Sep 2018
Ziran Jiang et al.
Ziran Jiang et al.
Viewed
HTML | XML | Total | BibTeX | EndNote | |
---|---|---|---|---|---|
1,178 | 782 | 70 | 2,030 | 65 | 73 |
- HTML: 1,178
- PDF: 782
- XML: 70
- Total: 2,030
- BibTeX: 65
- EndNote: 73
Viewed (geographical distribution)
Country | # | Views | % |
---|
Total: | 0 |
HTML: | 0 |
PDF: | 0 |
XML: | 0 |
- 1