Article
Geology
V. Monchal, K. Drost, D. Chew
Summary: The Variscan orogeny in southern Ireland and Britain is characterized by intense folding and thrusting. Late Eocene fold reactivation was detected in calcite veins, which suggests N-directed shortening associated with the Alpine/Pyrenean orogenies. This reactivation has not been recognized previously due to the lack of post-Variscan markers. The imaging approach to LA-ICP-MS U-Pb dating helped identify age-homogeneous domains and revealed the late Eocene fold reactivation.
Article
Engineering, Geological
Valerian Schuster, Erik Rybacki, Audrey Bonnelye, Grzegorz Kwiatek, Anja M. Schleicher, Georg Dresen
Summary: This study investigates the influence of pressure and mineral composition on the deformation behavior during fault reactivation in the Opalinus Clay formation. The results show a transition from brittle to semi-brittle behavior with increasing pressure, characterized by non-linear strain hardening and delocalization of deformation.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Energy & Fuels
Rui Feng, Haoran Luo, Zhaowei Chen, Fengshou Zhang
Summary: By analyzing a refracturing well in the Sichuan Basin, it was found that fault reactivation can cause casing deformation and trigger high-magnitude microseismic events. The study also established a positive relationship between b-value and instantaneous shut-in pressure (ISIP), where lower b-value represents lower ISIP. This relationship has important implications for hydraulic fracturing, microseismicity, and fault reactivation.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Geochemistry & Geophysics
Julia K. Morgan, Evan A. Solomon, Ake Fagereng, Heather M. Savage, Maomao Wang, Francesca Meneghini, Philip M. Barnes, Rebecca E. Bell, Melodie E. French, Nathan L. Bangs, Hiroko Kitajima, Demian M. Saffer, Laura M. Wallace
Summary: The study of drilling results from IODP Site U1518 reveals that the Papaku fault has a large offset and exhibits intense tectonic ductile deformation and asymmetric distribution of structures. The tectonic ductile deformation within the fault zone can be explained by seafloor overthrusting. Interstitial pore water geochemical profiles indicate the repetition of near-seafloor diagenetic sequences below the fault, suggesting recent overthrusting within the last 50-100 kyr. Therefore, the Papaku fault may define a low-permeability seal that maintains locally high pore fluid pressures and low fault strength, which could be favorable for the occurrence of slow slip events.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geography, Physical
Lianji Liang, Xiufu Qiao, Fuchu Dai, Ning Zhong, Hanchao Jiang
Summary: Soft-sediment deformation structures (SSDSs) are widely developed in lacustrine sediments in tectonically active regions, containing valuable information on regional fault activity. This study identified multiple SSDSs in Late Pleistocene lacustrine sediments in northeastern Pamir, showing deformation mechanisms related to liquefaction, fluidization, and thixotropic behaviors. AMS radiocarbon dating data revealed formation periods of the SSDSs, indicating a possible relation to seismic activities and enhancing understanding of fault activity in the region.
QUATERNARY INTERNATIONAL
(2021)
Article
Engineering, Geological
Xiaojie Yang, Wei Ming, Weiran Zhang, Chun Zhu, Yadong Mao, Xiang Wang, Manchao He, Zhigang Tao
Summary: This paper investigates the asymmetric large deformation and failure characteristics of carbonaceous slate tunnels under asymmetric stress through physical model experiments, revealing deformation mechanisms and proposing control measures.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Environmental Sciences
B. V. Lakshmi, Praveen B. Gawali
Summary: This study reports the activity of the Dauki fault in the northeastern region of India and provides evidence of seismic events through the analysis of soft sediment deformation structures. Further research is needed to accurately determine the recurrence interval of significant earthquakes.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Meng Zhang, John W. F. Waldron, Zhiping Wu, Xiaoqing Zhang
Summary: This study examines the growth history and reactivation of Chengbei Fault in the Bohai Bay Basin, East China, using well-constrained 3D seismic data. The results show that the Chengbei Fault reached its near-final length during the syn-rift phase and accumulated most of its displacement during the Paleogene period. It was later reactivated in a strike-slip-dominated transtensional setting, with at least 17 fault segments developing and vertically linking to the lower fault system.
Article
Geochemistry & Geophysics
Dario Civile, Giuliano Brancolini, Emanuele Lodolo, Edy Forlin, Flavio Accaino, Massimo Zecchin, Giuseppe Brancatelli
Summary: The Plio-Quaternary tectonic evolution of the central sector of the Sicilian Channel and the resulting morphostructural setting have been analyzed using a large geophysical dataset consisting of multichannel seismic profiles and available bathymetric data. The area hosts two regional-scale tectonic domains that registered the complex pattern of deformation occurred since the Early Pliocene, with the Sicilian Channel Rift Zone and the Capo Granitola-Sciacca Fault Zone playing key roles in shaping the regional tectonic configuration.
Article
Engineering, Geological
Fanzhen Meng, Zhufeng Yue, Muzi Li, Jianhua Han, Qijin Cai, Wei Wang, Dawei Hu, Chuanqing Zhang
Summary: This study investigates the reactivation process of rough fractures in deep tunnelling, mining, and subsurface energy recovery. The experiments reveal the different slip modes and stress requirements for fractures with different orientations, and identify precursor signals for fracture reactivation.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Geosciences, Multidisciplinary
Jiawei Wan, Bin Li, Yang Gao, Chengxuan Tan, Zhuang Li
Summary: In this study, centrifuge model tests were conducted to investigate the process and mechanism of pumping-induced normal fault reactivation and the resultant ground fracture. The results showed that the decline of the water table significantly accelerated uneven subsidence. Additionally, the reactivation mechanism was revealed based on Anderson's faulting theory.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geography, Physical
Bizhu He, Cunli Jiao, Zhihui Cai, Ruohan Liu, Joseph G. Meert, Xiaorui Yun, Tianyu Wang, Weiwei Chen, Zhuoying Yu, Jinchang Li, Shoutao Peng, Guangming Hao, Xianpu Guo, Xiufu Qiao
Summary: The study in the Tarim Basin identified various soft-sediment deformation structures (SSDS) and an unconformity, indicating that the basin was not a stable tectonic-sedimentary environment during the Ediacaran-Cambrian transition.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Ariana Molenaar, Maarten Van Daele, Jyh-Jaan Steven Huang, Michael Strasser, Marc De Batist, Mario Pino, Roberto Urrutia, Jasper Moernaut
Summary: In-situ soft sediment deformation structures (SSDS) are commonly used as paleoseismic indicators. The deformation is mainly influenced by the presence of volcanogenic deposits and the shaking strength of earthquakes.
SEDIMENTARY GEOLOGY
(2022)
Article
Engineering, Geological
Kaizong Xia, Congxin Chen, Tianlong Wang, Kuoyu Yang, Chuqiang Zhang
Summary: This study monitored the long-term deformation of the Jinshandian Iron-ore Mine in China and analyzed the failure characteristics of underground roadways and the ground surface. It revealed the mechanisms responsible for mining-induced fault reactivation and identified different stages of failure in the surrounding rock masses based on the quality of overlying strata. Additionally, the study found that the collapse and destruction of columns in the abutment pressure zone significantly affected the fracturing in the surrounding rock masses.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Alberto Perez-Lopez, Fernando Perez-Valera
Summary: This paper discusses various soft-sediment deformation structures found in the Triassic deposits of the Betic External Zone in Southern Iberia, and highlights the intense tectonic activity related to rifting in the Middle to Late Triassic. The sedimentary record of the Middle-Late Triassic in this region is represented by Muschelkalk and Keuper facies, showing features such as slumps, breccias, seismite beds, and volcaniclastic rocks, indicating tectonic activity possibly linked to the breakup of Pangaea.
COMPTES RENDUS GEOSCIENCE
(2021)
Article
Geography, Physical
Fabio Correa Alves, Dilce de Fatima Rossetti
PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
(2017)
Article
Geography, Physical
Fabio Correa Alves, Dilce de Fatima Rossetti
ZEITSCHRIFT FUR GEOMORPHOLOGIE
(2017)
Article
Geography, Physical
Fabio Correa Alves, Dilce de Fatima Rossetti, Marcio de Morisson Valeriano, Clodis de Oliveira Andrades Filho
Article
Remote Sensing
Nelson De Almeida Gouveia, Fabio Correa Alves, Luciana De Oliveira Pereira
REMOTE SENSING LETTERS
(2019)
Article
Geosciences, Multidisciplinary
Fabio Correa Alves, Dilce de Fatima Rossetti, Marcio de Morisson Valeriano
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geography, Physical
Dilce F. Rossetti, David L. Vasconcelos, Francisco H. R. Bezerra, Marcio M. Valeriano, Fabio Correa Alves, Eder C. Molina
Summary: The origin and impact of neotectonic activity on the large Amazonian rivers in intracratonic South America has been a topic of continuous research. Recent findings suggest that there has been fault reactivation and surface folding within central Amazonia. This study focuses on a large domal relief in central Amazonia called the Juru'a dome, aiming to understand its relationship to folding and explore the origin of the stress field from which it has developed. The results reveal subsurface evidence of a broad anticline and abundant NE- and NW-striking faults, suggesting deformation from strike-slip tectonics. The study shows that the neotectonic activity in the Juru'a dome is likely driven by far-field stresses from the Andean orogeny and the movement of the South American plate.
Article
Geography, Physical
Fabio Correa Alves, Martin Stokes, Sarah J. Boulton, Dilce de Fatima Rossetti, Marcio de Morisson Valeriano
Summary: The post-rift erosional history of elevated passive continental margins has been studied in the northeastern Brazilian region, revealing variations in tectonic styles, timing and rates. This study focuses on the Paraiba region, investigating the transient fluvial landscape responses to Quaternary tectonic uplift. The results show non-linear river profiles, migration of knickpoints and incised channels, supporting the hypothesis of increased tectonics during the Late Quaternary.