Journal of Geophysical Research: Solid Earth最新文献

{"title":"On the Complex Topography of Marine Volcanoes and Its Control on the Spatial and Magnitude Distribution of Surface Displacement","authors":"Megan Campbell,&nbsp;Séverine Furst,&nbsp;Henriette Sudhaus,&nbsp;Morelia Urlaub","doi":"10.1029/2024JB030805","DOIUrl":"10.1029/2024JB030805","url":null,"abstract":"<p>Marine volcanoes exhibit significant topographic relief, as they extend from deep below sea level to thousands of meters above. These volcanoes often have complex, asymmetric topographies due to the submersion of their flanks, yet deformation models often approximate this topographic surface as flat and overlook its effect in modeling approaches. This limiting perspective may lead to inaccurate assessments of deformation sources and potential hazards. In this study, we investigate the effect of complete marine volcano topography on deformation modeling. We comprehensively characterize volcano shape by applying a geomorphometric parameterization of natural asymmetry and steepness to describe marine volcanoes. Then, by building upon an existing analytical solution for triangular dislocations, we account for complete edifice topography (from the submarine base to the subaerial peak) and discretized source geometries to be solved in a full-space modeling domain. We demonstrate that models with complex topographies deviate to a greater extent from flat surface models, resulting in significant underestimations of both magnitude (up to 18% and 57% for vertical and horizontal, respectively) and spatial distribution of resultant displacement. In addition, we show that geomorphometric parameterization can provide a first-order approximation of deviation from a model with no topography. In the case of island volcanoes, the resultant displacement field is not confined to the onshore area but can extend beyond the coastline to the submarine edifice. This is particularly important as technology advances and submarine monitoring becomes feasible. Our approach enhances our understanding of volcano deformation scenarios and provides a tool for optimizing GNSS network design.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144869623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coupled Paleomagnetism and 40Ar/39Ar Dating of Latera Ignimbrites (Vulsini Volcanic District, Italy) Unravel Processes Associated to Piston-Collapse Calderas","authors":"Arianna Beatrice Malaguti,&nbsp;Stéphane Scaillet,&nbsp;Marco Pistolesi,&nbsp;Mauro Rosi,&nbsp;Fabio Speranza,&nbsp;Alberto Renzulli","doi":"10.1029/2024JB030910","DOIUrl":"10.1029/2024JB030910","url":null,"abstract":"<p>Correlation of ignimbrite units at polygenic calderas is mandatory for the reconstruction of caldera-forming events and proper identification of their eruption dynamics. However, ignimbrites erupted at different times from the same caldera can display similarities in composition and lithology that can hamper proper correlation of outcrops across the caldera structure. Here, high-resolution paleomagnetic and ⁴⁰Ar/³⁹Ar data are used along with stratigraphic evidence to address and resolve the relationships between two ignimbrites associated with the Latera caldera (Grotte di Castro and Onano Formations, Vulsini Volcanic District, Central Italy). These were characterized at 32 paleomagnetic sites and eleven ⁴⁰Ar/³⁹Ar sampling sites encompassing proximal and distal facies. Overall, the paleomagnetic directions of the two ignimbrites are statistically indistinguishable whereas single-grain ⁴⁰Ar/³⁹Ar ages of sanidine and leucite crystals show systematic preservation of pre-eruptive ages with sectorial variations closely controlled by eruption dynamics, yet with a neatly defined common juvenile (syn-eruptive) age at 205 ka. The data show that the two ignimbrites are the product of a single event, here renamed the “Grotte di Castro-Onano” eruption, representing the largest and latest caldera-forming stage of the Latera system. The sectorial preservation of pre-eruptive ⁴⁰Ar/³⁹Ar ages across the depositional sequence is interpreted to reflect the extraction processes with selective (re)mobilization of magma batches associated to piston collapse dynamics. Coupling paleomagnetism with ⁴⁰Ar/³⁹Ar dating is shown to be a key step in such cases for successful resolution of individual caldera-forming events at the millennial scale.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030910","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144870001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging Localized Slip-Induced Frictional Heating During Laboratory Earthquakes Using Magnetic Microscopy","authors":"Zheng Gong,&nbsp;Roger R. Fu,&nbsp;Daniel Ortega-Arroyo,&nbsp;Hoagy O’Ghaffari,&nbsp;Matěj Peč,&nbsp;Valère R. Lambert","doi":"10.1029/2025JB031286","DOIUrl":"10.1029/2025JB031286","url":null,"abstract":"<p>Slip-induced heating is crucial for understanding fault mechanics and energy partitioning during earthquakes. The strongest heating occurs in a thin, millimeter to sub-millimeter-scale zone, which poses a challenge for existing geothermometers because they lack spatial resolution or are limited to specific rock compositions. Here, we utilize the recently developed quantum diamond microscope (QDM) to resolve thermal demagnetization at micrometer resolution around experimentally produced slip zones, thereby quantifying the near-field slip-induced temperature excursion. This new technique also enables us to observe ∼300 μm-scale along-fault heterogeneities in heating intensity, highlighting the role of localized stress and deformation in guiding frictional evolution. A simple 1-dimensional heat diffusion model can simultaneously satisfy the temperature estimates from QDM, far-field thermocouple measurements, and microstructural observations of localized melting. This model constrains the thermal energy density during slip to be 52–65 kJ/m² during our laboratory earthquakes, which accounts for 52%–75% of the total energy budget. We also estimate that the average friction coefficient during rapid slip is 0.2–0.3, suggesting significant weakening during slip. Our results provide new insights into the role of localized heating during earthquake-like failure and illuminate the role of thermal weakening mechanisms at pressures corresponding to the base of the seismogenic crust.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trans-Conceptual Sampling: Bayesian Inference With Competing Assumptions","authors":"Malcolm Sambridge,&nbsp;Andrew P. Valentine,&nbsp;Juerg Hauser","doi":"10.1029/2024JB030470","DOIUrl":"10.1029/2024JB030470","url":null,"abstract":"<p>Trans-dimensional Bayesian sampling has been applied to subsurface imaging and other inference problems across the Earth Sciences. A particular style of Markov chain Monte Carlo (McMC) method, known as reversible-jump has been used almost universally in such studies. This algorithm allows sampling across variably dimensioned model parameterizations. However, for practical reasons, it is limited to cases where the number of free parameters differ in a regular sequence between alternate models, usually by addition or subtraction of a single variable. Furthermore, jumps between model dimensions rely on bespoke mathematical transformations, which are bespoke to each class of application. As a result, implementations are dependent on the choice of model parameterization employed. A framework for Trans-conceptual Bayesian sampling, which is a generalization of trans-dimensional sampling, is presented. Trans-C Bayesian sampling allows exploration across a finite, but arbitrary, set of conceptual models, that is ones where the number of variables, the type of model basis function, nature of the forward problem, and assumptions on the measurement noise statistics, may all vary independently. The new framework avoids parameter transformations and thereby lends itself to development of automatic McMC algorithms, that is where the details of the sampler do not require knowledge of the parameterization. Algorithms implementing Bayesian conceptual model sampling are presented and illustrated with examples drawn from geophysics, using real and synthetic data. Comparison with reversible-jump illustrates that trans-C sampling produces statistically identical results for situations where the former is applicable, but also allows sampling in situations where trans-D would be impractical to implement.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030470","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inferring Long-Term Geocenter Motion From Low-Degree Gravity Field","authors":"Yufeng Nie,&nbsp;Jianli Chen,&nbsp;Dongju Peng,&nbsp;Jin Li","doi":"10.1029/2024JB030327","DOIUrl":"10.1029/2024JB030327","url":null,"abstract":"<p>Accurate determination of geocenter motion is essential not only for establishing a stable terrestrial reference frame, but also for deriving a complete picture of large-scale global mass redistribution in the Earth system. For geophysical applications, reliable geocenter motions can be inferred from time-variable gravity fields provided by the Gravity Recovery and Climate Experiment (GRACE) since 2002, but it is more challenging for the pre-GRACE era where only low-degree gravity fields are available from the Satellite Laser Ranging (SLR). In addition, geocenter motion estimates derived from SLR using the direct method lack the trend in a linear reference frame and are therefore generally not suitable for studying mass change rates. In this study, we derive the geocenter motion from low-degree gravity fields up to degree and order 5 after properly addressing signal leakage. Using the leakage-corrected land mass patterns combined with corresponding ocean mass fingerprints, we generate geocenter motion estimates and compare them with those derived from GRACE, geophysical models, and the SLR direct method between 2002 and 2020. The trends in our estimates are consistent with GRACE and models, with differences below 0.1∼0.2 mm/yr depending on the quality of the gravity field models, while the SLR direct estimates yield opposite trends, leading to significantly underestimated global ocean mass change rates. Our study provides the first promising solution to derive long-term geocenter motion rates from low-degree gravity fields, which can be used to track large-scale mass change back to the 1990s.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stress Heterogeneities Governed by Fault Structure and Stress Transfer: The 2016–2017 Central Italy Seismic Sequence","authors":"Patricia Martínez-Garzón,&nbsp;Men-Andrin Meier,&nbsp;Cristiano Collettini,&nbsp;Federica Lanza,&nbsp;Georg Dresen","doi":"10.1029/2024JB029763","DOIUrl":"10.1029/2024JB029763","url":null,"abstract":"<p>We analyze the evolution of stress parameters from the 2016–2017 central Italy seismic sequence taking advantage of ∼13,747 robust focal mechanisms from a deep learning catalog. The density of the catalog allows us to invert focal mechanisms over distances of a few km and different time periods. We inferred a number of stress-related parameters, including the fault plane variability, the orientation of principal stress axes and maximum horizontal stress, the relative magnitudes of principal stresses and the variability of the principal stress orientations with respect to the median. From the uniform regional stress field consistent with the extension of the Apennine Belt, we observe local stress heterogeneities that are driven by the structural features and the coseismic stress history. A variation of the principal stress magnitudes and regimes from pure normal faulting toward transtension with depth is observed. Stress differences at the 1–10 km wavelength are observed between each side of two of the main regional fault structures. The reported stress results suggest a partial mechanical coupling and a strong interaction between the shallow normal faults and the detachment horizon at depth. Furthermore, distinct trends are observed in the stress parameters after the largest mainshocks, and before the <i>M</i>_W 6.5 Norcia mainshock, potentially indicating the high shear stress still available in well oriented faults after the <i>M</i>_W 6.0 Amatrice earthquake. Our analysis holds implications toward (a) constraining stress magnitudes, (b) illuminating the interaction between the shallow normal faults and detachment horizons, and (c) tracking stress evolution during seismic sequence.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029763","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144858589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paleomagnetic Evidence for a Late Permian Qaidam-North China Connection, and the Cryptic Final Mesozoic Intra-Asian Suture","authors":"Teng Wang,&nbsp;Yanan Zhou,&nbsp;Douwe J. J. van Hinsbergen,&nbsp;Jiaopeng Sun,&nbsp;Xin Cheng,&nbsp;Ruiyang Chai,&nbsp;Shihua Xu,&nbsp;Pengfei Wang,&nbsp;Hanning Wu","doi":"10.1029/2025JB031123","DOIUrl":"10.1029/2025JB031123","url":null,"abstract":"<p>Paleomagnetic data have long shown that the final assembly of eastern Eurasia occurred in the latest Jurassic, after the North China Block moved 1,000 s of km toward Eurasia throughout the late Paleozoic and Mesozoic. This was accommodated along the Solonker and Mongol-Okhotsk subduction zones whose sutures are well documented in (inner) Mongolia. During this time, one or more plate boundaries must have existed west of China to connect the (inner) Mongolian suture with the Paleotethyan plate boundaries. Paradoxically, no candidate Mesozoic plate boundary is known between North China and Eurasia to its west, in northern Tibet, the Tarim Basin, or the Tien Shan region. In this study, we show paleomagnetic pole from Upper Permian (255.7 ± 3.8 Ma) red beds from the Qaidam Block of northern Tibet, adjacent to the Tarim Basin, with positive fold test and corrected for inclination shallowing, with <i>D</i> = 348.7° ± 2.3°, <i>I</i> = 47° ± 2.5°, <i>λ</i> = 77.6°N, <i>ɸ</i> = 332.8°E, <i>A</i>₉₅ = 2.1°, <i>K</i> = 24.7, <i>N</i> = 199. These data reveal that Qaidam Block's paleolatitude was indistinguishable from that expected if it was part of North China but must have undergone ∼21° ± 2° (&gt;2,300 ± 220 km) paleolatitudinal motion relative to Eurasia since late Permian time. This suggests that the missing plate boundary (or boundaries), in the form of a transform or a subduction zone, must be sought around or within the Tarim Basin. This may form a starting point in a search for the cryptic, last intra-Asian suture(s) and calls for systematic regional restoration of circum-Tarim tectonic history.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of 1D Hybrid Hydromechanical Models for Real-Time Forecasting of Induced Seismicity Rate","authors":"V. Clasen Repollés,&nbsp;A. P. Rinaldi,&nbsp;F. Ciardo,&nbsp;L. Passarelli,&nbsp;D. Karvounis,&nbsp;S. Wiemer","doi":"10.1029/2025JB031592","DOIUrl":"10.1029/2025JB031592","url":null,"abstract":"<p>Hydraulic stimulations play an important role in Enhanced Geothermal Systems (EGS) by increasing the permeability of the host rock and facilitating more efficient fluid circulation and heat extraction. However, fluid injection operations are unavoidably accompanied by induced earthquakes. Adaptive Traffic Light Systems (ATLS) have been proposed as seismic risk mitigation tools for EGS stimulations. An ATLS scheme aims to provide real-time, adaptive, and time-dependent probabilistic seismic forecasts by leveraging the latest available data during ongoing industrial operations. Critical to ATLS are numerical models capable of robustly forecasting the temporal evolution of induced seismicity, while properly accounting for uncertainties. In this work, we present two classes of 1D hybrid hydromechanical models for real-time forecasting of induced earthquakes. We retrospectively apply these models to data sets from hydraulic stimulations performed at four different spatial scales: Grimsel Test Site (2017), Bedretto Underground Laboratory for Geoenergy and Geosciences (2022), Utah FORGE (2022), and Basel Deep Heat Mining project (2006). We compare the models' forecasting performance and real-time applicability. We found that a nonlinear pressure solution that accounts for both reversible and irreversible permeability changes, coupled with an analytical probability density-based approach to simulate seismicity, is more suitable for industrial-scale applications. A stochastic approach that explicitly simulates seismicity, albeit simplified and improved for computational efficiency, exhibits greater variability in performance and remains computationally expensive for industrial-scale cases involving large seismic data sets and high spatial resolution requirements.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2025JB031592","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructural Evolution of Carrara Marble During Semi-Brittle Deformation","authors":"Tongzhang Qu,&nbsp;Nicolas Brantut,&nbsp;David Wallis,&nbsp;Christopher Harbord","doi":"10.1029/2024JB030914","DOIUrl":"10.1029/2024JB030914","url":null,"abstract":"<p>Fifteen marble samples were subjected to semi-brittle deformation through triaxial compression experiments, reaching axial strains of about 0.5%, 1.0%, 2.0%, 4.0%, or 7.5% at temperatures of 20°C, 200°C, or 350°C, under a confining pressure of 400 MPa. Deformation twins, lattice curvature, and intragranular microfractures in the samples were quantitatively characterized using forescattered electron images and electron backscatter diffraction. Microstructural analyses revealed that twins accommodate most of the shortening during the first 2% strain, whereas lattice curvature associated with geometrically necessary dislocations predominantly develops with more strain. Intragranular fracture intensity exhibits an almost linear correlation with strain during the first 2% strain but increases more gradually with strain thereafter. The mechanical data indicate a strong decrease of yield stress with temperature increasing between 20°C and 200°C, consistent with the temperature dependence of the critical resolved shear stress for dislocation glide. The post-yield strain hardening is likely caused by progressively increasing intensity of interactions among dislocations and between dislocations and twin boundaries. Based on the microstructural data and interpreted hardening mechanisms, we propose a phenomenological model, with state variables representing microstructural elements that hinder dislocation glide, as a step toward development of a microphysical constitutive model of semi-brittle deformation.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030914","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inclination Divergence of Paleomagnetic Data Caused by Tectonic Strain in Cretaceous Redbeds From the Lhasa Terrane (Tibetan Plateau): Insights From AMS, hf-AIR, and CPO Analyses","authors":"Hongliang Lu,&nbsp;Baochun Huang,&nbsp;Qian Zhao,&nbsp;Zhiyu Yi,&nbsp;Josep M. Parés","doi":"10.1029/2024JB030655","DOIUrl":"10.1029/2024JB030655","url":null,"abstract":"<p>Paleomagnetic data from the Lhasa Terrane have been commonly utilized to constrain the paleo-position and shape of the southern margin of Asia prior to the India-Asia collision. However, there has been an ongoing debate regarding the reliability of the paleomagnetic data derived from Upper Cretaceous sedimentary rocks in the Lhasa Terrane. Here, we employ combined anisotropy of magnetic susceptibility (AMS), high-field anisotropy of isothermal remanent magnetization (hf-AIR), and crystal preferred orientation (CPO) measurements on the redbeds of the Shexing Formation. Regardless of the structure displayed by the AMS, the hf-AIR demonstrates a weak cleavage to deformational magnetic fabric, with minimum axes corresponding roughly with the c-axis of hematite in the bedding plane. Consequently, we argue that the inclination divergence observed between the two limbs of anticlines in the Late Cretaceous paleomagnetic data from the Lhasa Terrane is attributable to the rotation of hematite under weak post-depositional tectonic strain. We caution against using Upper Cretaceous redbeds from the Lhasa Terrane for paleogeographic reconstruction without an efficient correction of tectonic strain. Furthermore, we propose the adoption of anisotropy of magnetic remanence as a more suitable alternative to AMS for assessing the reliability of paleomagnetic data in sedimentary rocks.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 8","pages":""},"PeriodicalIF":4.1,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}