Article
Geology
Richard O. Lease, Peter J. Haeussler, Robert C. Witter, Daniel F. Stockli, Adrian M. Bender, Harvey M. Kelsey, Paul B. O. Sullivan
Summary: The Fairweather fault in southeastern Alaska is the fastest-slipping intracontinental strike-slip fault on Earth. It plays a key role in localizing Yakutat-North America plate motion, with varying exhumation rates and extreme rock uplift rates identified through radiometric dating data at a restraining double bend. This fault accommodates all Pacific-North America relative plate motion and stabilizes highly localized plate boundary strike slip with persistent extreme rock uplift rates within the bend.
Article
Geosciences, Multidisciplinary
Haijia Lei, Xiaoming Shen, Xijun Liu, Yuntao Tian, Xiaoping Yuan, Jin Liu, Yingying Jia, Xiudang Tang, Shiguang Wang
Summary: Based on new thermochronological datasets, this study reveals that the southeastern Tibetan Plateau experienced significant crustal shortening and high-elevation topography during the Oligocene-early Miocene period, which is in agreement with sedimentary records and paleo-altimetry studies.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geology
Badieh Shahsavari Alavijeh, Ali Kananian, Saeed Madanipour, Martin Danisik
Summary: The study focuses on the exhumation history of the Nodoushan plutonic complex in the Iranian Plateau, revealing two main exhumation phases in the early and middle Miocene related to the collision between the Arabian and Eurasian Plates. The 'soft' initial stages of collision occurred in the early Miocene when the Arabian passive margin reached the subduction zone, followed by the final 'hard' collision with the continental margin in the middle Miocene.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Madison P. Taylor, Alexis K. Ault, Margaret L. Odlum, Dennis L. Newell
Summary: The study documents the depths and mechanics of fault slip along the seismically active Hurricane fault in Utah, showing that changes in hematite and silica-rich host rock contribute to fault weakening and promote rupture propagation.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Zhiyuan He, Linglin Zhong, Kai Cao, Wenbo Su, Stijn Glorie, Kanghui Zhong, Chuang Sun, Johan De Grave
Summary: This paper investigates the SE Tibetan Plateau in Yunnan, China, and finds that there are abundant Mesozoic crystalline rocks in the region, confirming the existence of basement rocks. Inverse thermal history modeling suggests extensive rapid cooling and exhumation events during the late Oligocene to Miocene, coinciding with large-scale strike-slip fault activities. The study proposes that widespread crustal shortening and thickening occurred in the SE Tibetan Plateau during the Oligocene-Miocene, and the present-day low-elevation landscape of Yunnan is a result of the complex interaction between regional tectonic activity and surficial erosion since the late Oligocene.
Article
Geochemistry & Geophysics
Robert G. McDermott, Alexis K. Ault, Jonathan Saul Caine
Summary: Unraveling complex slip histories in the dextral eastern Denali fault zone (EDFZ) in southwest Yukon, Canada has revealed multiple generations of foliated, high-aspect ratio hematite plates and indicated episodes of hydrothermal alteration and fault reactivation at aseismic to subseismic slip rates. The hematite He dates overlap previously documented surface uplift and shifting dynamics of the Yakutat microplate, pinpointing fault networks and deformation processes that accommodate regional deformation in response to far-field plate boundary processes.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Jia Cheng, Xiwei Xu, Junjie Ren, Shimin Zhang, Xiyan Wu
Summary: The study analyzed the multi-segment rupturing characteristics of the Xiaojiang fault on the southeastern Tibetan Plateau, finding that historical rupture event models influence future seismic simulations, and determined the probability of multi-segment rupturing based on new geological mapping results.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Kirk F. Townsend, Marin K. Clark, Nathan A. Niemi
Summary: Researchers found that reverse faulting is localized in the Western Transverse Ranges (WTR) and predates the timing of the Big Bend by several million years. The reverse faults in the WTR propagate from west to east, towards the San Andreas Fault, rather than outwards. New and existing thermochronometry data indicate rapid post-Miocene exhumation in the WTR, different from the broader region surrounding the Big Bend.
Article
Geochemistry & Geophysics
T. S. Waldien, S. M. Roeske, R. Chatterjee, P. B. O'Sullivan, D. F. Stockli
Summary: In this study, the relationship between lateral slip gradients and splay thrust faults on the Alaskan earthquake fault is investigated. The research shows that there is a lateral slip gradient along the fault line, which is caused by fault bends and splay faults, resulting in surface uplift. The study of the Denali fault in Alaska reveals the long-term coevolution of slip gradients and splay thrust faults.
Article
Multidisciplinary Sciences
Bin Zhao, Roland Burgmann, Dongzhen Wang, Jian Zhang, Jiansheng Yu, Qi Li
Summary: This study used GPS observations to derive the slip distribution of the 2020 Mw 7.8 Simeonof Island earthquake and analyzed the subsequent afterslip. The results indicate that the mainshock ruptured at depths of 30-40 km, and afterslip occurred both updip and downdip of the mainshock rupture.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
Remi Charton, Giovanni Bertotti, Aude Duval Arnould, Jonathan Redfern, Joep E. A. Storms
Summary: This study integrates over 30 published Low Temperature Thermochronology and time-Temperature modelling studies from Morocco and its surroundings to investigate the exhumation, erosion rates, and palaeoreconstructions of source-to-sink domains in the Atlantic realm. The results predict high exhumation rates in the Jurassic and Neogene, comparable to rift flank settings, and provide insight into the evolution of the Central Atlantic margin hinterlands.
Article
Geochemistry & Geophysics
Yijian Zhou, Han Yue, Shiyong Zhou, Lihua Fang, Yun Zhou, Lisheng Xu, Ziming Liu, Teng Wang, Li Zhao, Abhijit Ghosh
Summary: This study utilizes a seismic network to analyze microseismic activities, fault structures, and their properties along the Xiaojiang Fault Zone (XJF). The results show that the major faults have low seismicity, while off-fault branches exhibit intensive microseismicity. The slip rate on these off-fault branches is correlated with seismic activities, suggesting a potential barrier for future big earthquakes. Additionally, there is an along-strike variation in depth between creeping and locked fault portions. The study concludes that XJF is in the late stage of the inter-seismic period.
Article
Geosciences, Multidisciplinary
Yannan Wang, Jin Zhang, Xiao Huang, Zhenjiang Wang
Summary: Based on compilation and analysis of low temperature thermochronological data, this study reveals the spatial and temporal exhumation patterns of the Tianshan range during the Cenozoic. Four different exhumation episodes have been identified, indicating the significant influence of the Indian-Eurasian collision on the mountain-building processes in the Tianshan.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geochemistry & Geophysics
Jia Cheng, Thomas Chartier, Xiwei Xu
Summary: This study established five possible multisegment rupture combination models for the Xianshuihe fault and found that the model based essentially on historical ruptures produced seismicity rates most consistent with historical records. Additionally, the model with ruptures on both the entire northern section and southern section should also be considered for future earthquake risk assessments.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
E. M. Armstrong, A. K. Ault, K. K. Bradbury, H. M. Savage, P. J. Polissar, S. N. Thomson
Summary: During an earthquake, the energy generated by fault friction is dissipated as heat. The rise in temperature after an earthquake is important for determining the magnitude of past earthquakes, but it is difficult to accurately measure. Researchers compared two temperature-sensitive geochemical methods and found that they provided consistent estimates of the temperature rise after an earthquake.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geosciences, Multidisciplinary
S. P. Regan, G. J. Walsh, M. L. Williams, J. R. Chiarenzelli, M. Taft, R. McAleer
Article
Multidisciplinary Sciences
Sarah E. Mazza, Esteban Gazel, Michael Bizimis, Robert Moucha, Paul Beguelin, Elizabeth A. Johnson, Ryan J. McAleer, Alexander V. Sobolev
Article
Geosciences, Multidisciplinary
Peter M. Valley, Gregory J. Walsh, Arthur J. Merschat, Ryan J. McAleer
Article
Geochemistry & Geophysics
Sanaa Abdulhameed, Lothar Ratschbacher, Raymond Jonckheere, Lukasz Gagala, Eva Enkelmann, Alexandra Kaessner, Myriam S. C. Kars, Adam Szulc, Sofia-Katerina Kufner, Bernd Schurr, Jean-Claude Ringenbach, Mykhaylo Nakapelyukh, Jahanzeb Khan, Mustafo Gadoev, Ilhomjon Oimuhammadzoda
Article
Geochemistry & Geophysics
Julia Pickering, William Matthews, Eva Enkelmann, Bernard Guest, Chris Sykes, Brett M. Koblinger
Article
Geosciences, Multidisciplinary
Hind Ghanem, Ryan J. McAleer, Ghaleb H. Jarrar, Mu'ayyad Al Hseinat, Martin Whitehouse
PRECAMBRIAN RESEARCH
(2020)
Article
Geochemistry & Geophysics
S. Khodaparast, S. Madanipour, E. Enkelmann, R. Nozaem, K. Hessami
JOURNAL OF GEODYNAMICS
(2020)
Article
Geochemistry & Geophysics
Scott Jess, Daniel Koehn, Matthew Fox, Eva Enkelmann, Till Sachau, Kevin Aanyu
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Geology
Minhee Choi, David W. Eaton, Eva Enkelmann
Summary: The Denali fault is a transcurrent fault system with segments of variable historical seismicity, where a pair of earthquakes near the Eastern Denali fault in 2017 exhibited unexpected source mechanisms and stress conditions. Precise relocation of aftershocks revealed distinct fault strands oblique to the EDF, with calculations indicating triggering of the second earthquake by the first. The EDF parallels the Fairweather transform, implying stress transfer deforming and shortening the region between them.
Article
Geochemistry & Geophysics
Ryan McKay, Eva Enkelmann, Thomas Hadlari, William Matthews, Frederic Mouthereau
Summary: New low-temperature thermochronology data from clastic sedimentary rocks in the northern Richardson Mountains, Canada, indicate significant exhumational cooling during late Eocene-early Oligocene time. The results reveal three phases of cooling, with most samples cooled during the first and second phases, whereas the third phase is less well constrained. The timing of deformation is similar to nearby mountain belts, which suggests a widespread driving mechanism for deformation that could be related to the motion of the North American craton.
Article
Geochemistry & Geophysics
Jeanette C. Arkle, John Weber, Eva Enkelmann, Lewis A. Owen, Rob Govers, Scott Jess, Chris Denison, Paul B. O'Sullivan, Raymond A. Donelick
Summary: Transition zones from subduction to transform motion in the Caribbean plate can lead to complex deformation in regions like the Northern Range and Paria Peninsula. The exhumation history of these areas shows distinct phases of rapid cooling and exhumation, with eastward migration of these processes over time. The post-collisional changes in exhumation suggest east-side-up tilting of the Northern Range around 4 million years ago, consistent with the propagation of a lithospheric subduction-transform edge propagator fault.
Article
Geosciences, Multidisciplinary
Eva Enkelmann, Sarah Falkowski
Summary: The study reveals that the entire corridor between the Fairweather and Eastern Denali faults has been exhumed since the mid-Miocene era, with exhumation reaching much farther inboard of the Fairweather fault than in the St. Elias syntaxial region farther north. The Eastern Denali fault appears to serve as a backstop in these geological processes, with very limited late Cenozoic exhumation northeast of the fault.
Article
Geosciences, Multidisciplinary
Scott Jess, Eva Enkelmann, Stephen E. Grasby, Kelley Fraser
Summary: The study suggests that the timing of hot spring onset may be related to partial melting at the base of the crust, associated with increased heat flow in the late Cenozoic across the region. These findings have significant implications for understanding geothermal systems and the conditions required for hot spring formation.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
R. M. Flowers, P. K. Zeitler, M. Danisik, P. W. Reiners, C. Gautheron, R. A. Ketcham, J. R. Metcalf, D. F. Stockli, E. Enkelmann, R. W. Brown
Summary: The field of (U-Th)/He geochronology and thermochronology has experienced significant growth over the past 25 years. However, there is currently a lack of universally agreed upon protocols for reporting data and uncertainties. This study aims to address these issues and provides recommendations to enhance the reliability and cross-laboratory comparison of (U-Th)/He data.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Scott Jess, Eva Enkelmann, William A. Matthews
Summary: The timing of surface uplift in the Appalachian Mountains has been a topic of controversy. This study aims to resolve the exhumation history of the region using detrital laser ablation apatite (U-Th-Sm)/He dating. Results show a majority of Cretaceous dates, indicating a lack of significant Cenozoic exhumation. These findings have implications for understanding surface uplift and landscape evolution.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)