Physics of the Earth and Planetary Interiors最新文献

{"title":"An investigation on the crustal structure using coda wave attenuation and surface wave tomography in Western part of Iran","authors":"Somayeh Shakiba ,&nbsp;Rouhollah Amiri Fard ,&nbsp;Mojtaba Namvaran ,&nbsp;Samane Asadi ,&nbsp;Majid Mahood","doi":"10.1016/j.pepi.2025.107407","DOIUrl":"10.1016/j.pepi.2025.107407","url":null,"abstract":"<div><div>We interpret coda wave attenuation and Rayleigh wave group velocity to investigate the processes controlling the crustal structure beneath the western part of Iranian plateau and to determine the relevance of the Sahand and Sabalan to shallow crustal hot spot-like structures. Given that seismic wave attenuation is more sensitive to the thermal structure than the velocity, it provides additional information on the seismic velocity and helps identify compositional and thermal structures.</div><div>A total of 370 events recorded at 24 broadband seismic stations were used to create Rayleigh wave tomographic maps for six periods: 5, 10, 15, 20, 25, and 30 s. Moreover, more than 9800 local events were investigated to estimate lateral variations of the coda wave attenuation using multiple-scattering method. After examining different lapse times from the origin time with a fixed window length of 20 s, the results showed that a lapse time of 70 s provides stable QC indices, which were independent of the distance to the epicenter. After estimating the velocity and attenuation within the area, it was figured out that the low-velocity (high-attenuation) region underlying the Sahand Mountain (detected with a 5-s period) is related to the magma chamber beneath the crust resulting from the Anatolian and Arabian plates' collision. A shallow low-velocity region in the eastern part of the study area (detected with a 5-s period and disappeared for longer periods) might be associated with the Quaternary near-surface magma accumulations and/or upper crustal warm-ups.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107407"},"PeriodicalIF":2.4,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the crustal structure beneath the Chotanagpur Granite Gneiss Complex, eastern India: Interpretation from the 3-D magnetotelluric study","authors":"K. Naganjaneyulu ,&nbsp;B. Pradeep Naick ,&nbsp;Kusham ,&nbsp;A. Pratap ,&nbsp;V. Pooja Bhargavi","doi":"10.1016/j.pepi.2025.107406","DOIUrl":"10.1016/j.pepi.2025.107406","url":null,"abstract":"<div><div>The Proterozoic Chotanagpur Granite Gneiss Complex (CGGC) is economically rich with mineral deposits such as Uranium, Bauxite, Iron, Copper, Gold, Diamond etc. Thermo-tectonic events, including the timing and mechanism of attendant magmatism, metamorphism, and metallogeny, remain poorly constrained in the CGGC. To examine the effect of magmatic processes that have originated from the mantle or deeper levels of the lower crust, a comprehensive magnetotelluric (MT) survey is being conducted in the CGGC region. This study aims to provide a detailed understanding of subsurface electrical conductivity to assess the impact of mantle-derived magmatic activity and subduction on the region's crustal structure. The crustal electrical resistivity structure of the CGGC is imaged using 16 magnetotelluric stations. The phase tensor skew shows the three-dimensional (3-D) nature of subsurface structures beneath the study region. 3-D modelling results show the resistive upper crust along the profile up to the depth of approximately 5 km and map several less resistive features in the mid-crust. The process of subduction significantly contributes to the buildup of magmatic fluids within the mid-crust. As the subducting slab releases fluids, it lowers the melting point of the overlying mantle rocks, facilitating partial melting. This resulting molten material can rise towards the mid-crust, transporting dissolved gases and volatiles, such as carbon, along with it. The low resistive features are observed from approximately 5–15 km depth with ∼10 Ω-m resistivity value. The uppermost crust is resistive due to the presence of granite and gneissic composition. Subduction related magmatic fluids at depths that accelerate carbon enrichment could be one reason for the less resistive features mapped in the mid-crust. From the 3-D inversion model, we conclude that no deep-seated faults are present in the study region. Faults extend up to the mid-crustal level, featuring layered structures. The low resistive zone in the mid crust corresponds to the corridors of paleo-fluid flow along crustal-scale structures established in response to terrane amalgamations.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107406"},"PeriodicalIF":2.4,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exceptional secular variation recorded in Neolithic hearths, Orkney and Swedish lake sediments","authors":"Neil Suttie ,&nbsp;Sam Harris ,&nbsp;Catherine M. Batt ,&nbsp;Andreas Nilsson ,&nbsp;Ian Snowball ,&nbsp;Nick Card ,&nbsp;Zoe Outram","doi":"10.1016/j.pepi.2025.107412","DOIUrl":"10.1016/j.pepi.2025.107412","url":null,"abstract":"<div><div>Geomagnetic field models constrained by direct observations extend back some 400 years and the magnitude of decadal to centennial variations that they display is often assumed to be typical of the secular variation over longer timescales. Here we present archaeomagnetic directions from layered Neolithic hearths in Orkney, dating to around 3000 BCE, that challenge this assumption. Combining stratigraphic controls with radiocarbon dates allows for a precise chronology, which, in turn, implies directional change of more than 12°/century lasting for 200 years, far in excess of anything seen at this latitude over the era of historical observations. These archaeomagnetic data are complemented by similarly rapid changes in inclination recorded in two high temporal resolution sediment cores from Kälksjön, Sweden. As well as raising the possibility of using archaeomagnetic dating within this important archaeological period, the new data pose questions regarding our understanding of the secular variation, the limitations of the historic field as a proxy for the past, and the underlying dynamical processes within the core. This research highlights the importance of archaeology to the wider scientific community and the potential of archaeological material to further our understanding of Earth processes.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107412"},"PeriodicalIF":2.4,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating seismic crustal anisotropy and sub-crustal deformation beneath Northeast India through harmonic decomposition of receiver functions","authors":"Dhiraj Kumar Singh ,&nbsp;Mohit Agrawal ,&nbsp;Hitank Kasaundhan ,&nbsp;O.P. Mishra ,&nbsp;M.K. Sen","doi":"10.1016/j.pepi.2025.107408","DOIUrl":"10.1016/j.pepi.2025.107408","url":null,"abstract":"<div><div>Northeast India, characterized by its active seismicity, complex tectonic structures, ongoing subduction, and diverse lithological formations, serves as an important natural laboratory for anisotropic studies. This study analyzed lithospheric anisotropy through the Harmonic Decomposition (HD) of receiver functions derived from teleseismic earthquakes recorded at ten broadband seismic stations across the region. Our findings reveal significant variations in crustal deformation across the Eastern Himalayas, Assam Valley, Shillong Plateau, and Bengal Basin, driven by distinct tectonic influences. We observed a Moho depth of approximately 50–60 km in the Indo-Burma and Eastern Himalayan regions, around 30–40 km in the Assam Valley, about 37 km in the Shillong Plateau, and between 43 and 47 km in the Bengal Basin. Further, the alignment of fast anisotropic axes generally follows the motion of the Indian Plate (N20⁰E), with localized deviations near the Kopli Fault and Indo-Burma region, indicating intricate tectonic complexities. However, the anisotropy axis direction varies from N20⁰W to <em>E</em>-W in the uppermost mantle. The adjacent variations in anisotropic interfaces and their tilt axes across these regions reflect extensive crustal deformation associated with subduction and collision tectonics. Notably, the Eastern Himalayas exhibit a lattice-preferred alignment in the <em>E</em>-W direction, while the increasing Moho depth from north to south underscores the effects of ongoing collision and crustal thickening associated with down warping of the mantle, particularly in areas like the Shillong Plateau and Bengal Basin. The simultaneous presence of shallower Moho and stress perpendicular to anisotropic tilt direction (<em>E</em>-W) discerned in this study validates the hypothesis of a tectonically supported uplifted Shillong Plateau. These findings highlight the role of asthenosphere flow and transpressional thickening in shaping the crustal structure in the Indo-Burma ranges due to sub-crustal geodynamical processes, with additional influences from subsidence and sediment deposition in the Bengal Basin. The observed anisotropy is consistent with past Indian plate motion, while variations in the Tripura fold belt suggest complex interactions between mantle flow and regional tectonics.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107408"},"PeriodicalIF":2.4,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The source process of the 2014 Jinggu earthquake in Yunnan, China","authors":"Junlei Chen ,&nbsp;Yan Li ,&nbsp;Jinlai Hao ,&nbsp;Tao Xu","doi":"10.1016/j.pepi.2025.107410","DOIUrl":"10.1016/j.pepi.2025.107410","url":null,"abstract":"<div><div>The 2014 Jinggu <em>M</em>_w 6.0 earthquake occurred in the complex conjugate fault system of the Southwest Yunnan Block, comprised of NNW-trending and NNE-trending faults. We relocated the mainshock's hypocenter and inverted the focal mechanisms of earthquakes greater than <em>M</em> 3.5 and the mainshock's rupture process to study the earthquake sequence's source process. The relocation of the mainshock's hypocenter was determined to be at 100.47°E, 23.40°N, and 9.3 km. The focal mechanism of the mainshock is 150°/76°/179°(strike/dip/rake). There are 21 strike-slip earthquakes, 2 normal aftershocks, and 2 thrust aftershocks. The average dip angle of the Jinggu earthquake sequence is 78.75°. The Jinggu earthquake was a single-fault bilateral rupture event. The peak slip, average rake, and slip rate of the mainshock are 0.56 m, 182°, and 2.12 km/s, respectively. The main slip patch of the mainshock slip model was at 4 km in the 150° direction from the epicenter with a depth ranging from 4 km to 9 km. Ninety percent of the energy was released within the first 5.8 s. The Jinggu earthquake sequence may consist of ruptures on two fault planes dominated by the mainshock and two <em>M</em>_w 5.5 aftershocks occurring within the conjugate fault system.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107410"},"PeriodicalIF":2.4,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface wave attenuation beneath the Himalaya-Tibet region constrained by fundamental mode of Rayleigh wave from the Hi-CLIMB dataset","authors":"Davin David ,&nbsp;Utpal Saikia ,&nbsp;Ritima Das ,&nbsp;Sarmistha Bhagawati","doi":"10.1016/j.pepi.2025.107404","DOIUrl":"10.1016/j.pepi.2025.107404","url":null,"abstract":"<div><div>This study investigates Rayleigh wave group velocity and surface wave attenuation coefficients in the Himalaya-Tibet region using seismograms from 16 earthquakes recorded along the Hi-CLIMB network. The observed amplitude variations reveal a decreasing trend with distance, attributed to geometrical spreading, source radiation, wavefield scattering, and intrinsic attenuation. Attenuation coefficients range from 0.00167 km⁻¹ to 0.00039 km⁻¹ across the study area, while Rayleigh wave group velocities vary from 2.5 to 3.2 km/s for periods between 5 and 40 s. A strong frequency dependency in attenuation is observed, with attenuation coefficients peaking at shorter periods, consistent with similar trends reported in other tectonically active regions. Comparisons with global tectonic regions reveal higher attenuation beneath the study area, indicating low Q (41–82) values associated with mechanically weak, partially melted crust. The attenuation model suggests intrinsic attenuation as the dominant mechanism, though scattering effects cannot be ignored due to the region's structural complexity. Understanding these attenuation characteristics helps in interpreting seismic data and developing accurate ground motion prediction models, which are crucial for infrastructure resilience and early warning systems in this seismically active region. This, in turn, enhances seismic monitoring capabilities.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107404"},"PeriodicalIF":2.4,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144290864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanisms of two P-phase observations in earthquakes within the upper mantle beneath Northeast Taiwan: Insights from 2D waveform simulations","authors":"Hung-Yu Yen ,&nbsp;Po-Fei Chen ,&nbsp;Mei Chien","doi":"10.1016/j.pepi.2025.107409","DOIUrl":"10.1016/j.pepi.2025.107409","url":null,"abstract":"<div><div>Understanding the upper mantle structures beneath northeast Taiwan is crucial for interpreting the region's geodynamics. The deployment of the Formosa Array since 2017 has facilitated this investigation. In this study, we thoroughly examine the observations of two P phases from a representative deep earthquake, starting with a compilation of arrival time patterns and waveform characteristics, followed by two-dimensional waveform simulations. After successfully reproducing the key observations using models that include a high Vp anomaly in the mantle wedge above the Ryukyu subduction zone and a slightly faster Eurasian lithosphere to the west, we conclude that the second P phase originates from a head wave along the sub-vertical boundary of the Eurasian lithosphere. These two-dimensional model structures also replicate the observed arrival time patterns of nearby events with two P phases. The results of this study provide alternative constraint on the boundary between the Philippine Sea Plate and the Eurasian Plate at the surface. The findings support the active role of the Eurasian Plate in accommodating the northwesterly-indented Philippine Sea Plate slab beneath northeast Taiwan, rather than a passively torn model.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107409"},"PeriodicalIF":2.4,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frequency characteristics of electrical conductivity anomalies and the coastal effect","authors":"Igor I. Rokityansky,&nbsp;Artem V. Tereshyn","doi":"10.1016/j.pepi.2025.107400","DOIUrl":"10.1016/j.pepi.2025.107400","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In geophysical studies of the electrical conductivity of the Earth's crust and upper mantle, quantitative integral parameters describing the scale/intensity of electrical conductivity anomalies are almost not used yet. A simple and informative parameter is the total lengthwise conductance G = Q∙ϭ&lt;sub&gt;i&lt;/sub&gt;, where Q is the cross-section area of the anomalous body and ϭ&lt;sub&gt;i&lt;/sub&gt; is its conductivity. In the Earth's lithosphere, anomalous fields are excited/aroused mainly by the conductive mechanism, for which a theory was developed (&lt;span&gt;&lt;span&gt;Rokityansky, 1972&lt;/span&gt;&lt;/span&gt;; &lt;span&gt;&lt;span&gt;Rokityansky, 1975a&lt;/span&gt;&lt;/span&gt;, &lt;span&gt;&lt;span&gt;Rokityansky, 1975b&lt;/span&gt;&lt;/span&gt;; &lt;span&gt;&lt;span&gt;Rokityansky, 1982&lt;/span&gt;&lt;/span&gt;). This theory links G to the frequency characteristic of the anomalous field or more specifically with the period T&lt;sub&gt;0&lt;/sub&gt; at which the real part of the anomalous field reaches a maximum and the imaginary part is equal to 0, changing sign. The anomalous field is mainly represented by the induction arrow. One of the main objectives of this work is to specify the relationship between the observed value T&lt;sub&gt;0&lt;/sub&gt; and the desired G under real Earth conditions, that is, to determine the function G (T&lt;sub&gt;0&lt;/sub&gt;). Estimating G is important for several factors: 1. Any additional parameter enhances a study's possibilities. 2. A highly reliable quantity G determined by magnetic variation profiling allows using it as &lt;em&gt;a priori&lt;/em&gt; information for subsequent computer interpretation of 5-component records. 3. The availability of a quantitative characteristic allows ordering anomalies according to their scale/intensity. The method was first described in 1975 in PEPI, but it was based on simplified Earth models, and the dependence G(T&lt;sub&gt;0&lt;/sub&gt;) was obtained with an error exceeding half an order of magnitude. This paper presents results of new 2D models calculations which were as close as possible to typical Earth structures and the error was reduced by approximately three times. The main models were deep conductors with a compact cross-section and surface conductors represented by rectangular seawater layer of varying depths, forming a coastal effect. In a complicated model of the deep (4000 m) sea with the shelf (100 km wide, 200 m deep), a previously unknown phenomenon was discovered - a very local increase in the anomalous field in the coastal zone of land, which we termed the resonance-synergistic effect. The paper further presents results of 137 observatories of the INTERMAGNET network processing, covering for the first time all latitudes from the Arctic Ocean to Antarctica. At all observatories, induction arrows were calculated for periods of 225, 450, 900, 1800 and 3000 s. Five coastal observatories with induction arrows exceeding 0.8 are shown on maps along with the bathymetry of the adjacent seas. The analysis demonstrated that the regularities calculated on 2D models explain the main patterns of behavior observed ne","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107400"},"PeriodicalIF":2.4,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of archeo- and paleomagnetic field models and their common features","authors":"Ingo Wardinski ,&nbsp;Filipe Terra-Nova ,&nbsp;Erwan Thébault","doi":"10.1016/j.pepi.2025.107399","DOIUrl":"10.1016/j.pepi.2025.107399","url":null,"abstract":"<div><div>Archeo- and paleomagnetic field models show a wide range of temporal variability and of spatial content. While the temporal variability may reflect true geomagnetic field variation, the different spatial content of individual models could be explained by different modeling strategies and data sources, but mostly by data uncertainties. To overcome these data uncertainties, we derive averaged models over the last 100 kyrs from a large suite of different archeo- and paleomagnetic field models using different average techniques. The averaged models allow us to evaluate the robustness and the significance of spatial features of these models throughout time. It is utilized to compute structural criteria that quantify the axial dipole dominance, the equator-symmetry of magnetic field, its zonality and other important measures of weak field regions and control of the geodynamo by heterogeneous heat flux at the lowermost mantle. These criteria are used to quantify the Earth-likeness of numerical dynamo simulations. Over 100 kyrs the criteria show larger fluctuations than previously assumed, which implies a wider range of numerical dynamo simulations to be considered Earth-like.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107399"},"PeriodicalIF":2.4,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallographic preferred orientation of (Mg,Fe)O up to 125 GPa inferred from torsional deformation experiments using a rotational diamond anvil cell","authors":"Bunrin Natsui ,&nbsp;Shintaro Azuma ,&nbsp;Keishi Okazaki ,&nbsp;Kentaro Uesugi ,&nbsp;Masahiro Yasutake ,&nbsp;Saori Kawaguchi-Imada ,&nbsp;Ryuichi Nomura ,&nbsp;Kenji Ohta","doi":"10.1016/j.pepi.2025.107392","DOIUrl":"10.1016/j.pepi.2025.107392","url":null,"abstract":"<div><div>To investigate the texture development of (Mg,Fe)O, we conducted torsional deformation experiments on (Mg,Fe)O with varying Fe contents under pressures up to 125 GPa and temperatures up to 900 K using a rotational diamond anvil cell combined with synchrotron X-rays. The results indicate that the texture development follows the same trend as that observed in MgO, even when the Fe content varies or undergoes a spin transition. However, we found that the crystal plane perpendicular to the compression direction of (Mg,Fe)O could transition from {110} to {100} at lower pressure and temperature conditions than in MgO, attributable to the effect of Fe incorporation. Additionally, the texture of (Mg,Fe)O may vary with the combination of Fe content and strain. In regions with high Fe content and large strains, such as the D″ layer, it may be necessary to evaluate the seismic anisotropy of (Mg,Fe)O based on the texture considering the effects of Fe content and strain.</div></div>","PeriodicalId":54614,"journal":{"name":"Physics of the Earth and Planetary Interiors","volume":"366 ","pages":"Article 107392"},"PeriodicalIF":2.4,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}