Earth and Planetary Science Letters最新文献

{"title":"Reexamination and reidentification of ocean oxygenation event in the wake of the Marinoan glaciation","authors":"Run Li ,&nbsp;Xiqiang Zhou ,&nbsp;Chuan Guo ,&nbsp;Taiyu Huang ,&nbsp;Zhenfei Wang ,&nbsp;Kang-Jun Huang ,&nbsp;Peng Peng ,&nbsp;Xiangli Wang ,&nbsp;Tongxuan Du ,&nbsp;Dingshuai Xue ,&nbsp;Yanhong Liu","doi":"10.1016/j.epsl.2025.119312","DOIUrl":"10.1016/j.epsl.2025.119312","url":null,"abstract":"<div><div>The earliest Ediacaran oceanic oxygenation event in the wake of the Marinoan glaciation defined as OOE-A (∼635–632 Ma) constitutes an integral component of the Neoproterozoic Oxygenation Event. It was largely identified based on high enrichments of redox-sensitive elements (RSEs) in the basal Ediacaran Doushantuo Formation in South China, but this proposal has been challenged on a global scale. Here, we reexamine the purported OOE-A through an integrative study of correlative successions across the shelf-to-basin transect in South China, along with records from other continents. Sedimentary and geochemical evidence, including iron speciation, RSE concentrations, organic carbon isotopes, and pyrite sulfur isotopes, collectively suggest an oxic shelf and an anoxic (intermittently euxinic) basin with a fluctuating chemocline around the upper slope environment in South China. Importantly, a diffusion-reaction model integrating sedimentation rates and authigenic RSE concentrations suggests that the discrepancies in RSE enrichment levels between the basal Ediacaran black shales of South China and northwestern Canada can be reconciled if seawater Mo and U concentrations were only 0.5–3 % and 1.5–6 % of their modern values, respectively. This finding contradicts the traditional viewpoint of the expansion of seawater RSE reservoirs in response to a widely oxygenated ocean, while emphasizing a non-negligible role of slow sedimentation rate in driving authigenic RSE enrichments in anoxic marine facies locally. From spatial and temporal perspectives, this study further refines the magnitude of the OOE-A in South China, characterizing it as a short-lived oxygenated shelf environment in a redox-stratified ocean. The reexamination of OOE-A offers new insights into understanding other documented oceanic oxygenation events, as well as the cause-and-effect relationship between marine oxygenation and biological evolution during the Neoproterozoic Oxygenation Event.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119312"},"PeriodicalIF":4.8,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 past and future geography of the Eastern Mediterranean constructed from GNSS observations","authors":"Dan McKenzie","doi":"10.1016/j.epsl.2025.119313","DOIUrl":"10.1016/j.epsl.2025.119313","url":null,"abstract":"<div><div>The seismic activity of the Alpine-Himalayan belt is distributed over a wider region than is that of most oceanic active belts, and its deformation cannot be described by the relative rotation of a small number of large rigid plates. One of the most active regions of this belt is the Eastern Mediterranean, which has been intensively studied using earthquake seismology and satellite geodesy. At present there is no agreement as to whether the observed kinematics should be described using a large number of microplates or by continuous deformation. The two approaches are combined here, by dividing the region into four large deformable patches whose relative velocity consists of two parts: a rigid rotation about a pole and a continuous distributed deformation. This description of the kinematics allows reconstruction of the past geography of the region and its elevation to be made relative to Eurasia taken to be fixed. The resulting displacements agree reasonably well with independent estimates of the displacements on the North and East Anatolian Faults, the length of the subducted slabs beneath the Aegean and Western Turkey, and paleomagnetic measurements of rotation. The principal force driving the deformation is the release of gravitational energy by the subduction of old oceanic lithosphere and rollback of the Hellenic Arc, not continental spreading. Projection of the displacements 8 Ma into the future shows how the Eastern Mediterranean will evolve to resemble the Western Mediterranean.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119313"},"PeriodicalIF":4.8,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Untangling the interplay among tectonics, climate, and erosion in the Himalayas using landscape evolution modeling","authors":"Yuqiang Li ,&nbsp;Xiaoping Yuan ,&nbsp;Charles M. Shobe ,&nbsp;Guillaume Dupont-Nivet ,&nbsp;Kai Cao","doi":"10.1016/j.epsl.2025.119305","DOIUrl":"10.1016/j.epsl.2025.119305","url":null,"abstract":"<div><div>The interplay between tectonic rock uplift and climatically modulated erosion governs landscape evolution and influences how mountain ranges affect climate, biogeochemical cycling, ecology, and biodiversity. The Himalayas, Earth's highest mountain range, have inspired a large body of work suggesting that Himalayan topography is primarily governed by southward-propagating tectonic deformation. Here, we use a new coupled surface process and orographic precipitation model to test this hypothesis, and to assess the extent to which orographic precipitation effects have modulated the influence of tectonics on Himalayan topography since the Neogene (<em>circa</em> 23 million years ago). The model is quantitatively constrained by observed topographic profiles, river profiles, precipitation profiles, erosion rates, and thermochronologic ages from eight major rivers. Results indicate that propagating rock uplift allows a maximum “no erosion” elevation of ∼20 km, and largely governs the formation of the present-day topography of the Himalayas, with a secondary role played by orographic-rainfall-influenced fluvial processes as suggested by erosion/uplift ratios of 60−70%. Modeled sediment fluxes from the orogen are 30–40 × 10⁶ m³/yr per 250-km width (i.e., approximately one drainage basin width). Our methods enable the integration of diverse observations to reconstruct how tectonics and climate have interacted to control the topographic evolution of mountain belts, and allow investigation into the long-term influence of important geomorphic process parameters.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119305"},"PeriodicalIF":4.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isotopic evidence for oceanic barium cycling in the initial stage of the mesoproterozoic","authors":"Xing Li ,&nbsp;Peter W. Crockford ,&nbsp;Yafang Song ,&nbsp;Haoming Yin ,&nbsp;Wei Wei ,&nbsp;Xun Wang ,&nbsp;Yuntao Ye ,&nbsp;Zhenhua Jing ,&nbsp;Fang Huang ,&nbsp;Huajian Wang ,&nbsp;Jihua Hao","doi":"10.1016/j.epsl.2025.119314","DOIUrl":"10.1016/j.epsl.2025.119314","url":null,"abstract":"<div><div>Recent studies have revealed the possibility of fluctuations of oxygen in the atmosphere and oceans across the Mesoproterozoic Era. Such fluctuations may have provided the necessary foundation for the emergence and possible early diversification of eukaryotic organisms at this time. However, the current understanding of this apparent coevolution requires further constraints on the operation of the biosphere. Here we analyzed barium isotopic compositions (δ¹³⁸Ba) together with other geochemical proxies within marine carbonates from the Gaoyuzhuang Formation (∼1570 Ma) of the Yanliao Basin, North China Craton. Our δ¹³⁸Ba values are similar to those of modern marine pelagic barite, but are lower and less scattered compared to modern seawater δ¹³⁸Ba compositions. We interpret these new δ¹³⁸Ba data to reflect the δ¹³⁸Ba composition of early Mesoproterozoic seawater, at least at the sediment-water interface. Moreover, we do not observe any clear fluctuations in δ¹³⁸Ba values coincident with carbonate δ¹³C excursions. We interpret these observations as a response to the accumulation of dissolved barium in the low-sulfate Mesoproterozoic ocean and thus, a buffering of δ¹³⁸Ba against significant variation in response to local factors such as primary productivity which influence modern marine δ¹³⁸Ba profiles. Moreover, our calculations estimate a ratio of ≈ 4:1 of continental weathering to hydrothermal activity based on a steady-state box model. Furthermore, our simulations suggest that the residence time of barium was 10–100-fold longer in the early Mesoproterozoic ocean compared to the modern, implying a much more conservative behavior of Ba and its isotopes.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119314"},"PeriodicalIF":4.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resolving mercury cycling and the role of volcanism during the Toarcian Oceanic Anoxic Event","authors":"Jinchao Liu ,&nbsp;Jian Cao ,&nbsp;Simon W. Poulton ,&nbsp;Wang Zheng ,&nbsp;Jiubin Chen ,&nbsp;Tianchen He ,&nbsp;Guang Hu ,&nbsp;Di Xiao","doi":"10.1016/j.epsl.2025.119323","DOIUrl":"10.1016/j.epsl.2025.119323","url":null,"abstract":"<div><div>The emplacement of the Ferrar large igneous province has been implicated as the ultimate driver of the Early Jurassic Toarcian Oceanic Anoxic Event (T-OAE). Mercury (Hg) systematics, alongside other lines of evidence, have been used to support this assumption, but controversy exists over the relative roles of volcanic versus terrestrial Hg inputs. Here, we investigate the Hg record in two cores that document a bathymetric transect across the lacustrine Sichuan Basin, China. Both cores are characterized by Hg accumulation during the Toarcian Oceanic Anoxic Event. However, observed negative correlations between Hg concentrations and geochemical indicators of water column sulfide availability suggest modification of primary Hg enrichments via redox-driven loss of Hg from the sediments. In addition, Hg isotope systematics show differing signals between the shallow and deep cores, indicative of increased inputs from terrestrial and atmospheric sources, respectively. These results suggest that regional factors exert a major control on Hg enrichments in sediments, which must be considered when utilizing Hg systematics to evaluate volcanic activity. However, our approach highlights that lacustrine systems do document an important role for atmospheric Hg deposition during the Toarcian Oceanic Anoxic Event, confirming that large-scale activity of the Ferrar large igneous province was a key driver of this major environmental perturbation.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119323"},"PeriodicalIF":4.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eccentricity and obliquity forcing of East Asian hydroclimate during the latest Cretaceous to early Paleocene","authors":"Xiaoyue Zhang ,&nbsp;David B. Kemp ,&nbsp;Ruiyao Zhang ,&nbsp;Robert A. Spicer ,&nbsp;Simin Jin ,&nbsp;Rui Zhang ,&nbsp;Ze Zhang ,&nbsp;Chunju Huang","doi":"10.1016/j.epsl.2025.119306","DOIUrl":"10.1016/j.epsl.2025.119306","url":null,"abstract":"<div><div>The latest Cretaceous to early Paleocene was characterized by a global ‘greenhouse’ climate, and may provide a useful analogue for understanding hydroclimate responses to elevated atmospheric CO₂ and temperature. However, a paucity of high-resolution and temporally well-constrained continental sedimentary records spanning this time interval hinders our understanding. We address this issue via a high-resolution paleoenvironmental analysis of a ∼1305 m thick terrestrial succession from the Asian interior (Gonjo Basin, Southeast Tibet). Cyclostratigraphic analysis of element abundance data, combined with a published magnetostratigraphy, allows us to establish an astronomical timescale spanning the latest Cretaceous to early Paleocene (∼69.4 Ma to ∼58.5 Ma) and investigate climatic variations at an orbital time-scale. We show that the paleoenvironment of the Gonjo Basin underwent two key transitions, with a shift from braided river conditions to floodplain-dominated conditions at ∼68.8 Ma, followed by a return to braided river conditions with likely high seasonality at ∼63.5 Ma. Eccentricity and obliquity forcing exerted a strong control on the regional hydrological cycle. We show that the relative strength of obliquity was likely amplified compared to coeval marine records. Obliquity may have modulated meridional heat and moisture transport into the Asian interior, which, combined with feedbacks from quasi-stable carbon reservoirs, mediated hydroclimate. This study improves our understanding of continental paleoclimate evolution in the latest Cretaceous to early Paleocene, and establishes the role and mechanisms of orbital forcing as a driver of hydrological cycle change in East Asia at this time.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119306"},"PeriodicalIF":4.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Link between crustal thickness and Moho transition zone at 9°N East Pacific Rise","authors":"Zhikai Wang ,&nbsp;Satish C. Singh ,&nbsp;J. Pablo Canales","doi":"10.1016/j.epsl.2025.119309","DOIUrl":"10.1016/j.epsl.2025.119309","url":null,"abstract":"<div><div>Oceanic crust is formed from basaltic melt produced by decompression melting due to mantle upwelling at mid-ocean ridges. This crust is separated from the underlying mantle either by a sharp Mohorovičić (Moho) discontinuity or a thick Moho transition zone (MTZ). Determining the relationship between the oceanic crustal structure and the MTZ is critical for understanding the crustal accretion processes at mid-ocean ridges. However, this relationship remains elusive due to the lack of high-resolution velocity model of the oceanic crust and MTZ. Here, we present result from the application of full waveform inversion to wide-angle seismic data acquired over a young oceanic crust near the 9°N East Pacific Rise, allowing us to obtain the crustal and MTZ thicknesses along a ∼70 km-long segment. We find that the crustal thickness and the MTZ thickness vary along the segment and they are inversely correlated, although the total cumulative thickness does not vary much along the profile. These variations could be attributed to the different melt migration efficiency or the variations in mantle thermal/chemical structure, indicating mantle heterogeneity along the ridge.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119309"},"PeriodicalIF":4.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Molybdenum isotope evidence for subduction-modified mantle beneath mid-ocean ridges","authors":"Zuxing Chen ,&nbsp;Fang-Zhen Teng ,&nbsp;Robert J. Stern ,&nbsp;Yuxiang Zhang ,&nbsp;Jie Li ,&nbsp;Zhigang Zeng","doi":"10.1016/j.epsl.2025.119294","DOIUrl":"10.1016/j.epsl.2025.119294","url":null,"abstract":"<div><div>\"Ghost\" arc geochemical signatures persistently occur in mid-oceanic ridge basalts (MORBs), yet their origin remains elusive. Here, we identified arc-like heavy Mo isotopic compositions in basalts from the St. Helena plume-influenced southern Mid-Atlantic Ridge. Their heavy Mo isotopic signature (δ^98/95Mo = –0.21 ‰ to +0.11 ‰), along with relatively low (La/Sm)_N, Nb/Zr, Ce/Pb, and Sr-Nd isotope ratios, cannot be explained by interactions of the depleted mantle with recycled crustal or lithospheric mantle materials or the influence of the St. Helena plume on their mantle source. By integrating seismic tomographic images and plate reconstruction models, we interpret these unique geochemical and heavy Mo isotopic signatures to reflect the inputs of fluid-modified mantle produced during the Mesozoic subduction beneath the southwestern Gondwana convergent margin. Our discovery provides crucial evidence for the role of the paleo-subduction-modified mantle in shaping present-day MORB-mantle heterogeneity and sheds light on the formation of ghost-arc signatures in global MORBs.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119294"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the emergence of fault afterslip during laboratory seismic cycles","authors":"Corentin Noël ,&nbsp;Cédric Twardzik ,&nbsp;Pierre Dublanchet ,&nbsp;François Passelègue","doi":"10.1016/j.epsl.2025.119288","DOIUrl":"10.1016/j.epsl.2025.119288","url":null,"abstract":"<div><div>Spatial fault heterogeneity is often invoked to explain the occurrence of fault afterslip following seismic ruptures. In this study, we tested this hypothesis in the laboratory by performing triaxial experiments on both homogeneous and heterogeneous faults, under confining pressures of 30, 60, and 90 MPa. The faults were composed of granite, prone to seismic behaviour, and marble, prone to aseismic behaviour. Unlike homogeneous granite faults, which display a nucleation stage followed by regular seismic events, heterogeneous faults can contain the co-seismic dynamic event within the experimental fault length. During this phase, the aseismic areas adjacent to the dynamic event undergo a stress increase, which is then released by fault afterslip over an extended post-seismic phase. The magnitude and duration of this post-seismic phase increase with confining pressure and with the proportion of aseismic-prone areas. We infer that the enhancement of post-seismic afterslip originates from the increase in the frictional stability of the aseismic-prone area, and of the normal stress acting on the fault. In addition, the observed increase in initial strain rate with normal stress is well explained by the rate-and-state framework. At the scale of our experiments, fault frictional heterogeneities play a primary role in the emergence of fault afterslip.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119288"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Reactive thermodynamics of crustal eclogitization and foundering","authors":"Mitchell McMillan ,&nbsp;Shi Joyce Sim ,&nbsp;Cian R. Wilson","doi":"10.1016/j.epsl.2025.119302","DOIUrl":"10.1016/j.epsl.2025.119302","url":null,"abstract":"<div><div>Regional metamorphism and densification (eclogitization) of the lower crust can affect the lithospheric dynamics of mountain belts, but the coupled effects of reaction rate, temperature, and composition on metamorphism are poorly understood. We present a reactive thermodynamic model of the granulite–eclogite transition to investigate the long-term buoyancy and gravitational stability of the lower crust. First, we characterize the conditions for which orogenic crust attains negative buoyancy by determining its reactive mineral assemblage and density under prescribed pressure–temperature–time paths. Using existing metamorphic rate data, we calibrate a Damkoḧler number (a relative reaction rate) to parameterize the catalytic effect of aqueous fluids. The depth necessary for negative buoyancy is sensitive to temperature and Da, ranging from ∼45 to <figure><img></figure> for a basaltic-andesite composition (54 wt.% SiO₂). Second, using a Rayleigh–Taylor instability analysis, we suggest that, while cold eclogitic crusts &lt;<figure><img></figure> would be strong enough to resist foundering within 50 Myr, warm crusts &gt;<figure><img></figure> could obtain large thicknesses of ∼10 to <figure><img></figure> and would founder within <figure><img></figure>. We hypothesize that such foundering events are a natural consequence of convergent tectonics, where the aqueous fluids and high pressures required for metamorphism are known to exist. The Pampean flat slab in the Central Andes provides geophysical evidence linking slab fluids to eclogitization and densification of the thickened continental crust. Lithospheric foundering coupled to convergent tectonics through eclogitization could explain many observations of orogenic hinterland deformation and magmatism.</div></div>","PeriodicalId":11481,"journal":{"name":"Earth and Planetary Science Letters","volume":"658 ","pages":"Article 119302"},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}