TY - GEN
T1 - The influence of thrust faulting on deep-seated slope gravitational deformation in southern Taiwan
AU - Chen, R. F.
AU - Lin, C. W.
AU - Lin, H. H.
AU - Hsieh, Y. C.
AU - Wang, C. L.
AU - Cheng, K. P.
AU - Chen, T. C.
N1 - Funding Information:
This work is funded by the Central Geological Survey and Soil and Water Conservation Bureau, “Surface displacement observation and deformation analysis in deep-seated landslide areas using InSAR interferometry ” 107 -10.10.2-S2 and “Installed Surface Displacement Monitoing System and the Analysis of Recoding GPS Data for Large Scale Landslide in 2018 ”.
Publisher Copyright:
© The authors and IGS: All rights reserved, 2019
PY - 2019
Y1 - 2019
N2 - Meilong River catchment has been chosen to illustrate the influence of thrust faulting on deep-seated slope gravitational deformation in southern Taiwan. We identified morpho-tectonic features using the 1 m resolution LiDAR derived DEM, aerial photographs and field observations. In the 5.2 km2 catchment, over 10 deep-seated landslides sized over 10 ha have been recognized. Furthermore, a 700 m to 800 m thick faulted material composed of gouge, breccia and intensively fractured metamorphosed metamorphised argillite with thin bedded sandstone was found. Drilling cores from five boreholes with a depth of 120 m to 140 m also support the results of field observations. Fault slip data measured in the field exhibit thrust-type movement that can be used to differentiate faulted material from tectonic origin rather than from gravitation sliding. Besides, as the sliding behavior of identified deep-seated landslides is much more similar to homogeneous cohesive soil than rocks, most of deep-seated landslides observed in the catchments exhibits rotational sliding behavior, which is different from the plane or wedge sliding behavior in most rock slopes in mountainous region of Taiwan.
AB - Meilong River catchment has been chosen to illustrate the influence of thrust faulting on deep-seated slope gravitational deformation in southern Taiwan. We identified morpho-tectonic features using the 1 m resolution LiDAR derived DEM, aerial photographs and field observations. In the 5.2 km2 catchment, over 10 deep-seated landslides sized over 10 ha have been recognized. Furthermore, a 700 m to 800 m thick faulted material composed of gouge, breccia and intensively fractured metamorphosed metamorphised argillite with thin bedded sandstone was found. Drilling cores from five boreholes with a depth of 120 m to 140 m also support the results of field observations. Fault slip data measured in the field exhibit thrust-type movement that can be used to differentiate faulted material from tectonic origin rather than from gravitation sliding. Besides, as the sliding behavior of identified deep-seated landslides is much more similar to homogeneous cohesive soil than rocks, most of deep-seated landslides observed in the catchments exhibits rotational sliding behavior, which is different from the plane or wedge sliding behavior in most rock slopes in mountainous region of Taiwan.
UR - https://www.scopus.com/pages/publications/85111908546
UR - https://www.scopus.com/pages/publications/85111908546#tab=citedBy
U2 - 10.32075/17ECSMGE-2019-0474
DO - 10.32075/17ECSMGE-2019-0474
M3 - Conference contribution
AN - SCOPUS:85111908546
T3 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
BT - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
A2 - Sigursteinsson, Haraldur
A2 - Erlingsson, Sigurour
A2 - Erlingsson, Sigurour
A2 - Bessason, Bjarni
PB - International Society for Soil Mechanics and Geotechnical Engineering
T2 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019
Y2 - 1 September 2019 through 6 September 2019
ER -