Marine and Petroleum Geology最新文献

{"title":"Pore-fracture fusion modeling method for ultra-deep clastic reservoirs","authors":"Hao Du ,&nbsp;Binyu Ma ,&nbsp;Chenchen Wang ,&nbsp;Denglin Han ,&nbsp;Rongrong Hu","doi":"10.1016/j.marpetgeo.2025.107307","DOIUrl":"10.1016/j.marpetgeo.2025.107307","url":null,"abstract":"<div><div>The pattern of connectivity between microfractures and matrix pores is important for in-depth understanding of ultra-deep porous-fractured clastic reservoirs. The evaluation of reservoir microstructure with digital core technology is an effective method. However, the information of fractures and pores cannot be acquired simultaneously from samples by merely using the traditional single-scale digital core analysis method, such that an integrated analysis of pores and fractures is impossible, which seriously restricts the evaluation of porous-fractured clastic reservoir. In this study, the 3D grayscale images of fractured samples are obtained through low-resolution micro-CT scanning, and the Otsu algorithm is adopted for binary segmentation of the 3D grayscale images. Then, matrix samples are drilled at the positions with small, moderate and large distances to fractures respectively for high-resolution scanning, and the maximum class spacing algorithm is used for binary segmentation to construct 3D fractured-porous digital core and the maximal ball algorithm is applied to extract the 3D fracture and pore network model. Finally, a fracture-matrix pore multiscale network model is built by the integration method. The results show that the matrix porosity decreases significantly with the increase of distance to the microfracture, that is, the further the distance to the microfracture, the smaller the matrix porosity. Therefore, a single small-scale pore-fracture model cannot reflect the structural characteristics of large-scale samples, which further verifies the necessity of establishing a representative pore-fracture fusion model. Since the fracture-matrix pore multiscale network model contains both fracture and matrix pore characteristics, the corresponding physical properties can be calculated. The fusion model has a total porosity of 13.6% and the pore-throat diameter/fracture aperture ranging in 3–2400 μm. The proposed modeling method provides a basic study platform for investigating the pore-fracture connectivity pattern in ultra-deep clastic reservoirs.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107307"},"PeriodicalIF":3.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148391","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":"Paleocene-Eocene evolution of the Prebetics (South Iberian Margin, South Spain) and comparison with other western Tethyan margins","authors":"Manuel Martín-Martín ,&nbsp;Crina Miclăuș ,&nbsp;José Enrique Tent-Manclús ,&nbsp;Josep Tosquella ,&nbsp;Francisco Serrano ,&nbsp;José María Samsó ,&nbsp;José Antonio Martín-Pérez","doi":"10.1016/j.marpetgeo.2025.107300","DOIUrl":"10.1016/j.marpetgeo.2025.107300","url":null,"abstract":"<div><div>Thirteen Paleocene-Eocene sections have been studied along the Prebetic Domain (South Iberian Margin) in the Alicante, Murcia, Granada, and Jaen Sectors. The sedimentary realms (mostly consisting in 15 shallow marine Lithofacies) and the tectono-sedimentary evolution were characterized. Three informal stratigraphic formations were proposed and dated with planktic foraminifera, calcareous nannoplankton, and Larger Benthic Foraminifera (LBF): (1) lower marly-clayey fm; (2) intermediate limestone-calcarenite fm; and (3) upper marly-clayey fm. The stratigraphic architecture shows diachronous boundaries and lateral passages, representing the internal and external platform (upper slope in a few cases). The lower marly-clayey fm is upper Paleocene to middle Lutetian, the intermediate limestone-calcarenite fm ranges from lower Ypresian to lower Bartonian, while the upper marly-clayey formation is lower Lutetian to lower Priabonian. The diachronism can be due to the inherent sedimentary paleoenvironment changes and to climatic-tectonic interferences. The noticeable thickness variations of sedimentary successions in the studied sections could indicate a synsedimentary tectonics with upward and downward movements of blocks or folds. During the Paleocene-Eocene, the studied area was part of the meridional belt of platforms in the western Tethys. A comparison with other sectors of the central-western Mediterranean area has been performed to evidence synchronous events at Tethyan scale. The compared margins experienced a common pre-foredeep evolution affected by the Eo-Alpine tectonics (Cretaceous to Paleogene) contemporaneously to the establishment of shallow and deep palaeoecological realms. In the case of shallow sedimentary successions, LBF and corals are registered. Comparable gaps in sedimentation are recorded in most of the correlated domains.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"176 ","pages":"Article 107300"},"PeriodicalIF":3.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488041","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":"Complex in-situ stress distributions in ultra-deep marine carbonate reservoirs: 3D numerical simulation in the Yuemanxi Block, Tarim Basin","authors":"Peng Chen ,&nbsp;Xinyu Chen ,&nbsp;Shuhan Yang ,&nbsp;Zeyu Li ,&nbsp;Chuanbo Shen ,&nbsp;Huaning Qiu ,&nbsp;Hui Zhang","doi":"10.1016/j.marpetgeo.2025.107297","DOIUrl":"10.1016/j.marpetgeo.2025.107297","url":null,"abstract":"<div><div>Marine carbonate reservoirs are widely distributed across the globe and present significant opportunities for hydrocarbon exploration. However, inherent heterogeneity in rock mechanical properties, coupled with the presence of fractures and cavities, results in complex in-situ stress variations that pose a challenge to hydrocarbon production. This study focuses on the Yijianfang Formation within the Yuemanxi Block of the Tarim Basin, employing core samples, well logging data, rock mechanics testing and 3D numerical simulations to quantitatively assess in-situ stress variations in ultradeep fracture-cavity reservoirs. A novel approach to predicting 3D rock mechanics parameters is introduced, advancing beyond previous methodologies. By analyzing stress simulation outcomes, the study identifies key factors controlling the behavior of ultra-deep marine carbonate fracture-cavity reservoirs, offering critical insights for well placement, fracturing optimization, and broader reservoir development strategies. Core analysis reveals the Yijianfang Formation to be highly fractured, with fractures classified into structural and diagenetic types. Triaxial rock mechanics experiments show a static Young's modulus ranging from 36 to 44 GPa and a static Poisson's ratio between 0.22 and 0.24. Based on seismic data, five distinct fracture and cavity types were identified, enabling the creation of a comprehensive rock mechanics parameter model. Formation MicroScanner Image (FMI) data indicate a maximum horizontal principal stress orientation of NE17° in the Yuemanxi area. Wellbore analysis and 3D stress field simulations reveal a complex stress distribution in the Yijianfang Formation, with stress decreasing in proximity to faults and cavities. Factors such as the characteristics of strike-slip faults, cavity connectivity, and the development of fractures and cavities significantly influence in-situ stress distribution within these fracture-cavity reservoirs.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107297"},"PeriodicalIF":3.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148390","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":"Three-dimensional pattern of thrust and allochthonous salt emplacement in the Northern Calcareous Alps, Eastern Alps (Austria)","authors":"Oscar Fernandez ,&nbsp;Thomas Leitner ,&nbsp;Lino Eggerth ,&nbsp;Diethard Sanders ,&nbsp;Hugo Ortner ,&nbsp;Michael Moser ,&nbsp;Mariusz Fiałkiewicz ,&nbsp;Luke Hill ,&nbsp;Bernhard Grasemann","doi":"10.1016/j.marpetgeo.2025.107295","DOIUrl":"10.1016/j.marpetgeo.2025.107295","url":null,"abstract":"<div><div>Pre-existing salt structures and thickness variation in the supra-salt stratigraphy exert a strong control on the geometry and evolution of contractional systems. Here we explore a sector of the central Northern Calcareous Alps (Eastern Alps, Austria), and its evolution over a timespan of ∼40 Ma, during the Late Jurassic to Early Cretaceous. The nucleation points of structures and their obliquity were conditioned by the presence of pre-existing structures above a highly effective basal evaporitic décollement. The ratio of thickness between the evaporitic detachment and its overlying stratigraphy controlled the evolution of structures, with thicker supra-salt stratigraphy limiting the progression of deformation. Syn-tectonic sedimentation changed the map pattern of salt-to-cover thickness (overburden to salt ratio) during deformation. Increasing sedimentary load above the salt led to the transition from an initial stage of squeezing of salt structures, salt-fed thrusting and salt allochthony, to a stage of low-angle thrusting. Differential shortening across the area led to highly oblique transport directions, up to 90° to each other, and lateral motions within the emplaced units that were accommodated through syn-thrusting extensional faulting.</div><div>The structural evolution presented here further provides critical insights into the earliest phases of Alpine orogenesis, in the Late Jurassic to Early Cretaceous, and helps to clarify structural and temporal relationships that had not previously been fully understood.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107295"},"PeriodicalIF":3.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147885","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":"New geological insights from legacy seismic sections: Decoding the Granada Basin (Spain)","authors":"C.J. Araque-Pérez ,&nbsp;F. Mancilla ,&nbsp;J.A. López-Comino ,&nbsp;D. Stich ,&nbsp;J. Morales ,&nbsp;T. Teixido","doi":"10.1016/j.marpetgeo.2025.107294","DOIUrl":"10.1016/j.marpetgeo.2025.107294","url":null,"abstract":"<div><div>Seismic surveys are crucial for investigating subsurface geological formations and require significant logistical and economic resources. This study reuses legacy seismic surveys from the Granada Basin conducted by the Chevron Oil Company in the mid-1980s to gain new geological insights. In a previous paper, data from two deep boreholes and 30 legacy seismic sections were recovered and reprocessed using Machine Learning; this work interprets the results to generate three complete pseudo-three-dimensional models of the entire basin: a P-wave velocity model, a sedimentary sequences model, and a fault systems model. The sedimentary sequence model identified five distinct depocenters with varying sediment compositions throughout the basin. The study found a progressive decline in sediment accumulation rates over time, from 0.18 mm/yr in the Tortonian to 0.10 mm/yr in the Pliocene-Quaternary. This trend reflects changes in the sedimentary system, moving from transitional platforms to regression and transgression episodes and finally to a stable continental state. The differences in sediment accumulation rates suggest that greater disparities are linked to intense tectonic activity, while smaller differences indicate reduced tectonic activity and a consistent sedimentation rate since the Pliocene. Additionally, 17 new faults were detected. Using the fault model and seismic activity data from 1984 to 2023 provided by the Andalusian Institute of Geophysics (IAG), a hazard analysis was performed based on the maximum magnitude supported by each fault, demonstrating the value of reusing vintage seismic data to update geological models and improve our understanding of subsurface formations and seismic hazards.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"174 ","pages":"Article 107294"},"PeriodicalIF":3.7,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178264","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":"Deciphering the dynamic evolution of the South Caspian Basin: Insights from channel patterns of the Amu Darya Delta","authors":"Saeed Sajedi Rashvanluee ,&nbsp;Rasoul Hamidzadeh Moghadam ,&nbsp;Iraj Abdollahi Fard","doi":"10.1016/j.marpetgeo.2025.107293","DOIUrl":"10.1016/j.marpetgeo.2025.107293","url":null,"abstract":"<div><div>This research investigates the South Caspian Basin's (SCB) tectono-sedimentary evolution by analyzing submarine channel geometry and azimuth, seismic stratigraphy, and data from a recent exploration well in the basin center. The SCB is a unique basin due to its significant tectonic activity, large sediment supply from surrounding mountain ranges, and complex geological history. It is also a critical region for hydrocarbon exploration, with substantial petroleum resources concentrated in its Pliocene strata. Understanding the SCB is crucial as it provides insights into how similar basins fill and evolve over time. Using enhanced 3D seismic data, multiple horizons are mapped to reveal channels. Thickness maps and reflector patterns help identify the Amu Darya Delta paleo-shelf breaks at the basin's eastern margin. Basin disconnections and reconnections are marked by an angular unconformity (∼3.4 Ma) and two maximum flooding surfaces (∼2.75 and ∼1.76 Ma). Subsidence curves of one well indicate significant tectonic subsidence and high sediment supply from the nearby mountains, resulting in a deep isolated present-day basin. The Amu Darya shelf break has been prograding southwestward with a northward shift of the Amu Darya River as its main channel since the mid-Pleistocene considering the channels and Gross Depositional Environment (GDE) maps. The channel patterns reveal different stages of delta development.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107293"},"PeriodicalIF":3.7,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148388","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":"Micro-charging and accumulation of shale oil in lamellar shale interbedded with siltstones, Dongying Depression, Bohai Bay Basin","authors":"Jinjun Xu ,&nbsp;Qilong Wu ,&nbsp;Xiangang Cheng ,&nbsp;Kaiyue Li ,&nbsp;Yiru Zhao ,&nbsp;Jie Wei ,&nbsp;Fuqi Cheng ,&nbsp;Lamei Lin","doi":"10.1016/j.marpetgeo.2025.107298","DOIUrl":"10.1016/j.marpetgeo.2025.107298","url":null,"abstract":"<div><div>The lithofacies of matrix-type shales are diverse. Interbedded siltstones and shales, a combination that is known for excellent reservoir properties, are primary targets in terrestrial shale. We investigated the generation of shale oil and the charging processes in the interbedded shale/siltstone succession of the upper fourth member of the Shahejie Formation (Dongying Depression, Bohai Bay Basin). The charging process is categorized into four stages: (A) initial stage, (B) charging stage, (C) maximum charging stage, and (D) late charging. During stage A, the production of shale oil is minimal, the mobility is limited, and the stage division curve remains consistent. During the B stage, there was a rapid increase in shale oil production, OSI, and filling rate, accompanied by significant changes in the slope of the curve. The production of shale oil, along with the OSI and filling rate of the C stage, achieved peak values, and the stage division curve exhibited stability. During stage D, there is a rapid decline in shale oil production, accompanied by a reduction in the filling amount. By using petroleum geochemistry, microscopy and micro-CT detection we analyze the evolution of the properties of the shale oil, mineral compositions, reservoir spaces and shale oil occurrence in these different stages. A combination of thermal evolution degree, shale oil properties and mineral composition controls the enrichment of shale oil. During the medium to high thermal evolution stages, the shale oil dominated by light to medium-weight oil components predominantly occurs in a free state within abundant dissolved pores, intergranular pores, inter-crystalline pores and microfractures; this is the most favorable stage for the enrichment of shale oil. On this basis we develop a model for shale oil enrichment in matrix-type shales that are interbedded with siltstone layers; this may be useful in the exploration of shale oil in similar lithofacies.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"174 ","pages":"Article 107298"},"PeriodicalIF":3.7,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178263","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":"Trace element signatures in sedimentary pyrite as indicators of methane seepage activities","authors":"Xi Yu ,&nbsp;Xiaoming Miao ,&nbsp;Davide Oppo ,&nbsp;Hongxinag Guan ,&nbsp;Jiangong Wei ,&nbsp;Jiangtao Li ,&nbsp;Tingting Wu","doi":"10.1016/j.marpetgeo.2025.107290","DOIUrl":"10.1016/j.marpetgeo.2025.107290","url":null,"abstract":"<div><div>Marine methane seeps are increasingly important to understand the impact of methane release into the water column and potentially the atmosphere. Among the various proxies used to reconstruct methane seepage, authigenic pyrite is a potentially important recorder. Pyrite is a significant carrier of trace elements, whose abundance is closely linked to the depositional environment where they form. Methane seepage environments are characterized by extensive pyrite enrichment. However, it remains to be determined whether the trace elements in pyrite can reliably provide information on the processes associated with methane seepage. We analyzed trace elements abundance in pyrite within sediment collected at the Haima cold seep area, South China Sea, using in-situ laser ablation-inductively coupled plasma mass spectrometry. Our results indicate that in a methane seepage environment, the concentrations of Ca, Mg, and Sr in pyrite are lower than in non-methane seepage environments due to the precipitation of authigenic carbonates that occurs in methane seepage settings. Additionally, the significant sulfate-driven anaerobic methane oxidation hinders the organoclastic sulfate reduction process, leading to a deficiency of Cr in pyrite. The reductive dissolution of Fe-Mn (oxy)hydroxides releases other elements, such as Mn and As, resulting in their enrichment in pyrite. Our study demonstrates that trace elements in pyrite can record information about methane seepage processes, highlighting their significance for understanding biogeochemical processes occurring in methane seepage environments.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107290"},"PeriodicalIF":3.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148389","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":"The deep roots and emplacement of Santonian intrusions in the Pre-Salt reservoirs of the Mero Field, Santos Basin, Brazil","authors":"Gabriel M. Marins ,&nbsp;Nicholas M. Lima ,&nbsp;Leonardo C. Oliveira ,&nbsp;Adriana O. Gangá ,&nbsp;Carlos M. Monnerat de Oliveira ,&nbsp;Ygor M. Rocha ,&nbsp;Francisco Abrantes ,&nbsp;Lucas M.M. Rossetti ,&nbsp;Juliana Costa ,&nbsp;John M. Millet ,&nbsp;Sofia A. Fornero ,&nbsp;Sandra A. Iwata","doi":"10.1016/j.marpetgeo.2025.107291","DOIUrl":"10.1016/j.marpetgeo.2025.107291","url":null,"abstract":"&lt;div&gt;&lt;div&gt;The carbonate reservoirs of the Mero field in the Santos Basin were intruded during the Upper Cretaceous by a series of alkaline basalt composition diabase dikes and sills. Despite the field's significance as one of Brazil's leading oil producers, the roots, migration, evolution, and emplacement mechanisms of this magmas in the reservoirs remain poorly understood. This study aims to contribute to the understanding of this phenomenon by presenting novel results based on seismic analysis and the only available core samples of two diabase intrusions from this event and their respective carbonate reservoir host rocks in Mero field. The two sills sampled by well 3-BRSA-1322-RJS are emplaced at the top of the Barra Velha Formation and represent segments of the same sheet intrusion. The roots of these intrusive bodies are associated with a complex plumbing system concentrated within lithospheric discontinuities, specifically the Mohorovičić (Moho). The NNW-SSE orientation of the studied sheet intrusion and of some of the underlying dikes indicate a structural control by deep basement faults with the same orientation, reactivated during the rifting phase and Upper Cretaceous. The emplacement mechanism of the sheet intrusion within the reservoir carbonates appears to be controlled by stratigraphic factors. The magma preferentially intrudes the rudstone/laminite contacts and laminite layers of the Lula's Fingers stratigraphic marker (LFSM). The high-temperature of this igneous body (1088–1158 °C) induced the cracking of organic matter within the host rock, leading to the production of liquid and gaseous hydrocarbons. Localized fractures within the diabases filled with bitumen indicate also the presence of hydrocarbon storage within these rocks. The segmentation of the sheet intrusion within laminite is attributed to the fissility of this rock and the formation of fractures in the magmatic front during the rapid maturation of organic matter. The mushroom-like morphology of the intrusion reflects the lateral migration of magma along the LFSM that cover a carbonate high (mound) in the NE of Mero Field. The segmentation of this intrusive body locally compartmentalizes the reservoir of the Mero field into \"box-work\" blocks impacting their connectivity. Geochemical evidence and textural features indicate that the sill was replenished by multiple pulses of alkaline basaltic melt from the same magma reservoir. The emplaced magma evolved through fractional crystallization, resulting in the formation of net-veined complexes composed of residual trachytic materials. The high concentrations of anorthoclase in these magmatic residues result in a positive peak in the gamma-ray log along the intrusions. The findings presented in this study elucidate the intricate evolution of these magmas from their ascent to their emplacement in the pre-salt carbonates. Additionally, they offer novel perspectives on the potential impacts of these magmas on the host rocks and t","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"174 ","pages":"Article 107291"},"PeriodicalIF":3.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177560","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":"The tectonic evolution of the pre-Mesozoic key period in the Tarim Basin: Constraints from U-Pb geochronology of paleozoic detrital zircons in the central uplift zone","authors":"Yang Gao ,&nbsp;Lin Jiang ,&nbsp;Weiyan Chen ,&nbsp;Hongkui Dong ,&nbsp;Wen Zhao ,&nbsp;Fujie Jiang ,&nbsp;Qingong Zhuo ,&nbsp;Haizu Zhang ,&nbsp;Yao Hu ,&nbsp;Zhou Fang ,&nbsp;Xiaohao Wang ,&nbsp;Yingqi Feng","doi":"10.1016/j.marpetgeo.2025.107292","DOIUrl":"10.1016/j.marpetgeo.2025.107292","url":null,"abstract":"<div><div>In recent years, as oil and gas exploration has increasingly advanced into deeper layers, the tectonic evolution of the Tarim Basin before the Mesozoic has garnered significant attention. However, due to the scarcity of magmatic and metamorphic records within the basin, analyses of major tectonic events remain contentious. Orogenic events contribute substantial detrital material to nearby regions, which is consequently reflected in the detrital zircon record. This study focuses on the sedimentary strata of the central uplift zone of the Tarim Basin. U-Pb dating was conducted on 600 detrital zircon grains from the Silurian to the Carboniferous periods, revealing two main age peaks at 806Ma and 452Ma. No significant peaks were observed in the age distribution outside of these two regions. The Paleozoic zircon data obtained from this study, when combined with previously published U-Pb age data of 2155 detrital zircons from southern and northern Tarim, indicate that these ages do not correlate with the Grenville orogeny event occurring between 1300Ma and 900Ma. Thus, the impact of the Grenville orogeny on the Tarim Craton appears to be very limited. The peak around 800 Ma generated by all zircon data corresponds to the transition period from the breakup of the Rodinia supercontinent to the formation of Gondwana. The collisional assembly of the north and south Tarim terranes likely occurred between 900 and 820Ma, during which the collisional orogeny led to the formation of the central uplift zone in Tarim. In the Paleozoic, the sediment sources of the central uplift zone in Tarim primarily originated within Tarim itself, with additional influences from the West Kunlun orogenic belt, South Tianshan, and Altun orogenic belt.</div></div>","PeriodicalId":18189,"journal":{"name":"Marine and Petroleum Geology","volume":"173 ","pages":"Article 107292"},"PeriodicalIF":3.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147882","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}