Basin Research最新文献

{"title":"Facies Relationships in Sandstone Intrusions: Examples From the Numidian Flysch, Northern Tunisia","authors":"Anthony Scott,&nbsp;Mario Vigorito,&nbsp;Andrew Hurst","doi":"10.1111/bre.70116","DOIUrl":"https://doi.org/10.1111/bre.70116","url":null,"abstract":"<div>\u0000 \u0000 <p>The Tabarka Injection Complex (TIC) consists of sandstone intrusions sourced from slope sandstone channels and emplaced into deep-marine mudstone and siltstone (Oligo-Miocene) of the Numidian Flysch, Northern Tunisia. The internal and external architecture of these sandstones is extremely complex due to the range of sand remobilisation and intrusion processes that modify depositional units and generate sandstone intrusions. Depositional facies record deposition from gravity flows in sand-rich slope channel complexes. Remobilised facies demonstrate post-depositional dewatering and fluidisation in the parent sandstones with abrupt lateral and vertical transitions into intrusive sandstones emplaced into hydrofractures in host mudstones. Surface marks developed along the walls of intrusions and other sedimentary structures in sandstone intrusions are interpreted to document high velocity erosive sand-laden turbulent flows and the transition to higher concentration laminar flow. Post-injection, sandstone intrusions were modified by dewatering, compaction and local bioturbation. The TIC is 50 m thick and is divided into five stratigraphically constrained units: (i) units 1 to 3 are 4 to 18 m thick and comprise turbiditic channel sandstone, which transition upward and toward the channel margins into extensively de-watered and remobilised sandstone, which in turn feed sandstone dykes and sills; (ii) unit 4 and 5 are 12 and 15 m thick and contain mostly sandstone intrusions that form an intricate complex of sills and dykes (up to 1.2 m thick). Previous outcrop studies on the origin of sandstone intrusions in the Numidian Flysch proposed syn-depositional downward injection or early post-depositional liquefaction and intrusion into adjacent host mudstone. Our data, instead, indicate that the sandstone intrusions formed by post-depositional upward and lateral injection (10's of meters) of fluidised sand from shallowly buried slope channels into the adjacent host mudstone, most likely in two or three injection events. The presence of sandstone sill-dominated units confirms that supra-lithostatic pore-fluid pressure (<i>P</i>_<i>f</i>) was attained in the parent sandstone during early burial and dyke strike orientation was controlled by the regional stress field related to the Magrhebian compression.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237598","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":"Unidirectionally Migrating Submarine Channels and Lobes of Hybrid Turbidite-Contourite Fans: Variations in Morphologies and Architectures With Exploration Significance","authors":"Chenglin Gong,&nbsp;Yijie Zhu,&nbsp;Ronald J. Steel,&nbsp;Sara Rodrigues,&nbsp;Dongwei Li","doi":"10.1111/bre.70119","DOIUrl":"https://doi.org/10.1111/bre.70119","url":null,"abstract":"<div>\u0000 \u0000 <p>The current study utilizes a global submarine channel-lobe database to document morphologies and architectures of submarine channels and lobes that are characterized by unilateral stacking patterns and are uniquely related to the persistent action of along-slope processes. The studied channel examples migrated sideways both parallel to and opposite to contour-current directions, resulting in unidirectionally downstream- and upstream-migrating channels, respectively. Unidirectionally downstream-migrating channels differ from unidirectionally upstream-migrating channels in that they are confined totally by incisions rather than flanked by overbank levees developed downstream of contour currents, and have steep channel walls with truncations developed downstream rather than upstream of contour currents. They all display an asymmetrical channel cross-section and record a global (latitudinal) variation in channel cross-sectional asymmetries. The strength of the power-law relationship of channel cross-sectional asymmetries to latitudes suggests that the Ekman spiral systematically varied with latitude is the most plausible causal mechanism for latitudinal variations in channel cross-sectional asymmetries. The documented depositional lobes show sideways migration in the same and opposite directions of contour currents, resulting in unidirectionally downstream- and upstream-migrating lobes. They are distinguished from turbidite lobes by their along-slope elongated morphologies, isobath-parallel distribution patterns, and unilateral stacking patterns. Their close association with unidirectionally migrating channels constitutes hybrid turbidite-contourite fans that have reservoir properties distinct from those of regular turbidite fans by positive permeability-porosity but negative petrophysical property-grain size relationships. From this study, we suggest that there can be two significantly different patterns of unidirectional channel/lobe migration. Our results, therefore, contourite to diminish the debate on unilateral channel migration and to cast light on the exploration significance of hybrid turbidite-contourite fans.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237434","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 Silfari Volcano: Recently Discovered Ladinian-Carnian Triassic Volcanism Offshore Mid-Norway Characterized by the 6307/1-1S Borehole","authors":"John M. Millett,&nbsp;Steve Thomas,&nbsp;Sverre Planke,&nbsp;Sara Callegaro,&nbsp;Lars E. Augland,&nbsp;Dougal A. Jerram,&nbsp;Michael Charnock,&nbsp;Israel Polonio,&nbsp;Henrik Svensen,&nbsp;Sara E. Sandvik","doi":"10.1111/bre.70120","DOIUrl":"https://doi.org/10.1111/bre.70120","url":null,"abstract":"<div>\u0000 \u0000 <p>Borehole 6307/1-1S was drilled in the Froan Basin offshore mid-Norway in 2018. The bottom of the well penetrated the upper c. 650 m of a seismically imaged mound revealing a previously unknown volcano-sedimentary sequence, here termed the Silfari Volcano. Borehole analyses reveal four volcanic packages (V1-V4), dominated by deeply altered extrusive lava flows and subsidiary pyroclastic units interlayered with (S1-S3) and then capped by (S4) four prominent terrestrial volcaniclastic sedimentary intervals. Petrological analyses of core and sidewall core samples reveal a strongly alkaline series of basic-intermediate to evolved igneous rocks ranging from foidites, through tephri-phonolites to phonolites. Sheet intrusions and cored hydrothermal baryte-calcite-fluorite veins with very low δ³⁴S_VCDT (9.9‰–11.8‰) subsequently cut the sequence. The vein formation is provisionally attributed to mixing of shallow Ba-enriched waters with saline and sulphate-rich brines ultimately derived from sub-volcanic magma-evaporite interactions with an interpreted potential Permian Zechstein sequence below the well penetration. Calcite δ¹³C and δ¹⁸O (mean −2.10‰ δ¹³C_VPDB and −14.79‰ δ¹⁸O_VPDB, respectively) support a modified seawater component in the vein-forming fluids. High precision U–Pb TIMS age dating on zircons extracted from the lowermost V1 (238.02 ± 0.13 Ma) and uppermost V4 (234.96 ± 0.47 Ma) volcanic packages bracket the activity of the Silfari Volcano across c. 3 Myr spanning the Ladinian-Carnian boundary of the Middle-Upper Triassic conformable with biostratigraphic results from overlying sediments. Magmatic zircons from within the V3 package reveal a date of 183.11 ± 0.12 Ma, indicating that a previously undocumented Early Jurassic intrusive magmatic event influenced the area. The Silfari Volcano shares some chemical affinities with the Skagerrak Centred Large Igneous Province (SCLIP) and the Oslo Rift; however, it is located several 100 km north of the nearest SCLIP deposits and post-dates the youngest robustly dated volcanism by several million years. The identification of Triassic volcanism has significant implications for understanding the tectono-magmatic history of the NE Atlantic margins.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174010","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":"Tectonic Interplay in the Gulf of Cagliari (Italy): Extension, Compression and Strike-Slip Movements","authors":"Anna Del Ben,&nbsp;Silvana Fais,&nbsp;Riccardo Geletti,&nbsp;Maria Cristina Caradonna,&nbsp;Veronica Frisicchio,&nbsp;Giuseppe Brancatelli","doi":"10.1111/bre.70115","DOIUrl":"https://doi.org/10.1111/bre.70115","url":null,"abstract":"<p>The Gulf of Cagliari (CG) region has been shaped by a combination of extensional and compressional tectonics, sometimes accompanied by transpression, since at least the Paleogene. The Corso-Sardinia Plate underwent counterclockwise rotation during the Late Oligocene-Early Miocene and coeval extensional tectonics formed the Sardinian Rift, which propagated into the present-day CG region. Simultaneously, compressional structures developed at the southeastern margin, starting the collision with the northern Africa margin. The Banghittu and Ichnusa highs, underlain by Palaeozoic basement, were uplifted and subsequently partially buried by thick Oligo-Miocene (OM) sedimentary wedges. Starting in the Late Miocene onwards, the southern Campidano Graben partially reactivated the pre-existing faults of the Sardinian Rift in the CG area. A Messinian evaporitic sequence (200–300 ms TWT of gypsum thickness) was deposited, thinning toward the margins. At the Last Messinian, a deep canyon eroded the gypsum within the graben depocenter, which was subsequently filled by Pliocene sediments. Compressional tectonics resumed at the Pliocene-Quaternary boundary (Ao phase), probably due to collision with a thick African continental foreland. The Banghittu High, ENE-WSW trending, was disrupted by the extensional deformation of the Campidano Graben and is now mostly buried below the Plio-Quaternary (PQ) sediments partially transported through recent canyons. In contrast, the Ichnusa High remains exposed, shaping the southern margin of the gulf with its NE-SE elongated form related to SE-ward compression. Its approximately symmetrical section also suggests a Quaternary strike-slip component. During the Quaternary, a canyon system was re-established, with trajectories partially determined by the previous structural highs.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173742","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":"Fault-Controlled Thermal Convection Dolomitization and Fluid Evolution Triggered by Emeishan Large Igneous Province","authors":"Feifan Lu,&nbsp;Yixin Dong,&nbsp;Jiajun He,&nbsp;Anqing Chen,&nbsp;Jiangnan Chen,&nbsp;Di Xiao,&nbsp;Lizhu Tao,&nbsp;Chen Zhang,&nbsp;Xiucheng Tan,&nbsp;Jianfeng Zheng,&nbsp;Jiuyuan Wang","doi":"10.1111/bre.70117","DOIUrl":"https://doi.org/10.1111/bre.70117","url":null,"abstract":"<div>\u0000 \u0000 <p>The Emeishan Large Igneous Province (ELIP) offers a canonical setting to examine plume–lithosphere interaction and its imprint on carbonate diagenesis on sedimentary basins. In the Sichuan Basin, Lower to Middle Permian stratiform dolomites archive ELIP-related fluid evolution. Here we integrate petrography, stable-isotope geochemistry (C–O–Sr), trace and rare-earth element data and in situ U–Pb geochronology to resolve the mechanisms and timing of dolomitization. Two dolomitization stages were identified. The first stage of dolomitization was driven by seawater convection through open fault systems and porous grainstones of the Chihsia Formation during the early phase of ELIP activity (~273.2–269.1 Ma). The second stage of dolomitization took place at the peak of ELIP activity (~260–259 Ma), when intensified tectonism reactivated basement faults. Seawater mixed with minor proportions of hydrothermal fluids convected along fractures, promoting both dolomite replacement and cement precipitation. Basin-scale comparisons of oxygen isotopes reveal a shift from localized thermal effects during the early stage to late-stage fluid homogenization, consistent with strong magmatic–fluid coupling. Collectively, we reveal that fault-controlled thermal convection in open-platform settings was the dominant driver of dolomitization, with hydrothermal fluids providing a limited overprint. These findings clarify the multiphase influence of ELIP on fluid dynamics and carbonate diagenesis, and provide new insights into the regulation of Large Igneous Provinces on basin-scale diagenetic systems.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174767","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":"Obliquity Variation and Polyphase Faulting During Rifting of the Outer High of the Santos Basin—Offshore Brazil","authors":"Peryclys Raynyere de Oliveira Andrade, Mário Neto Cavalcanti de Araújo, Tiago M. Alves, Renata da Silva Schmitt, Júlio Carlos Destro Sanglard","doi":"10.1111/bre.70118","DOIUrl":"https://doi.org/10.1111/bre.70118","url":null,"abstract":"Quantifying rift obliquity and coaxiality from seismic data remains intrinsically difficult in polyphase rifted margins, where fault populations of different ages, hierarchical orders and spatial scales are commonly analysed together. This practice can blur kinematically meaningful signals and leads to interpretations that are hard to compare across domains and through time. This study aims to (1) present a seismic‐based structural workflow that explicitly separates syn‐rift fault systems by relative chronology, hierarchical order and analytical scale prior to kinematic analysis, and (2) use that workflow to evaluate how rift obliquity and coaxiality vary through successive rifting stages. The approach integrates 3D seismic interpretation of fault geometry with stratigraphic truncation and cross‐cutting relationships. Fault systems and stratigraphic units are classified hierarchically and then analysed using kinematically constrained paleostress inversion. Rift obliquity ( <jats:italic>λ</jats:italic> ) is defined as the angular relationship between extension direction and rift trend, whereas rift coaxiality (Θ) expresses the degree to which successive deformation phases share a common principal deformation axis. The workflow documents a non‐monotonic evolution of rift obliquity across rifting stages. Early stretching is characterised by relatively high obliquity and low‐to‐moderate coaxiality, consistent with distributed deformation and strong influence of inherited structural fabrics. During the necking stage, deformation reorganises into a near‐orthogonal and highly coaxial configuration, interpreted as the most kinematically efficient phase of rifting on the outer proximal margin. As rifting progresses, obliquity decreases overall, but its expression becomes strongly dependent on scale and hierarchy: higher‐order fault systems preferentially record basinward trends, while lower‐order structures keep greater freedom to adapt locally through linkage, segmentation and relay development. Rift obliquity and coaxiality are not scale‐invariant properties. Basin‐scale kinematic trends may coexist with pronounced local variability, and non‐coaxial deformation can develop without major rotations of the regional stress field. By forcing an explicit separation of fault systems by time, hierarchy and scale, the proposed workflow provides a transferable framework for comparative kinematic analysis in other polyphase rifted margins where seismic interpretation is the primary constraint. Key limitations include uncertainties in plate‐kinematic reconstructions, seismic resolution, fault classification and the non‐uniqueness of palaeostress solutions; conversely, the main value of the method lies in resolving relative temporal trends and scale‐dependent behaviour rather than defining a single basin‐wide obliquity value.","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"70 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148289541","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":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148094076","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":"Depositional Setting of Eastern Sakarya Zone ( NE Türkiye): Late Cretaceous–Paleogene Period Biostratigraphy, Sedimentology and Tectono‐Sedimentary Basin Evolution","authors":"Fatih Köroğlu","doi":"10.1111/bre.70110","DOIUrl":"https://doi.org/10.1111/bre.70110","url":null,"abstract":"This study reconstructs the late Campanian–Thanetian tectonic and sedimentary evolution of the Eastern Sakarya Zone Basin (Türkiye) during the closure of the Neotethys Ocean, through the integration of tectonic, biostratigraphic and sedimentary data from three distinct tectonic regions: a northern back‐arc basin, a central magmatic arc and a southern fore‐arc basin. Analysis reveals a northwest‐southeast trending basin with pronounced lateral variations: sediment thickness increases west‐to‐east, while facies transition from pelagic (north) to neritic (south) carbonate. The succession records a shift from late Campanian–Danian pelagic back‐arc carbonates, through a Maastrichtian–early Danian hiatus, to late Maastrichtian–Danian hemipelagic‐neritic carbonates, culminating in a Selandian–Thanetian neritic platform. The study proposes the first integrated facies model for the Eastern Sakarya Zone, linking its stratigraphic architecture to regional geodynamics. This establishes a new tectonically controlled carbonate sedimentation model for the Eastern Sakarya Zone Basin, critical for understanding basin evolution from pelagic to neritic carbonate systems in a closing ocean setting.","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"11 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148291551","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":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148083413","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":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148079428","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}