Basin Research最新文献

{"title":"Shifting the Paradigm: Redefining the Chronostratigraphy of the Triassic Rewan Group, Bowen Basin, Australia","authors":"Matthew Scipione, Romain Vaucher, Eric Roberts, Alex J. McCoy‐West, Joan Esterle, Ashten Turner, Espen Knutsen","doi":"10.1111/bre.70102","DOIUrl":"https://doi.org/10.1111/bre.70102","url":null,"abstract":"The Triassic Rewan Group in the northern Bowen Basin, Queensland, Australia preserves a key record of terrestrial environments and faunas that have been assumed to document recovery following the end‐Permian mass extinction (EPME). The Rewan Group, consisting of the Sagittarius Sandstone and the Arcadia Formation, accumulated in a retroarc foreland basin during the Hunter–Bowen Orogeny, but its chronostratigraphy has remained poorly constrained because previous age models relied mainly on limited, geographically restricted biostratigraphy (esp. palynostratigraphy). Here, we couple detailed lithostratigraphic analysis with high‐density U–Pb detrital‐zircon (DZ) geochronology by LA‐ICP‐MS (ca. 300 analyses per sandstone), calibrated against latest Permian (ca. 252–251 Ma) tuff and tuffaceous reference horizons, and a detrital apatite U–Pb dataset, to establish a robust chronostratigraphic framework for the Sagittarius Sandstone and Arcadia Formation. We compare several maximum depositional age (MDA) metrics and show that maximum‐likelihood ages (MLA) at 10% discordance provide a stratigraphically coherent MDA estimate, with younger single‐grain and cluster‐based estimators used as internal checks and minimum bounds. Preferential zircon picking further shows that targeted grain selection enriches the youngest Triassic populations, strengthening the robustness of the resulting MDA constraints. The resulting MDAs demonstrate that the Rewan Group spans ca. 250–233 Ma (Olenekian to Carnian) and that the lower Rewan Group contact is strongly time‐transgressive. In the Taroom Trough (foredeep), fluvial successions show an overall up‐section younging from the latest Permian reference ages through Olenekian–Anisian Sagittarius Sandstone into the late Ladinian–earliest Carnian Arcadia Formation (based on sandstone MDAs). In contrast, in the Denison Trough (back‐bulge), the latest Permian coal measures are directly overlain by Middle–early Late Triassic Rewan Group deposits, implying a hiatus or condensed interval of at least ca. 12–15 Myr based on MDAs. We show that known Arcadia Formation vertebrate fossil‐bearing horizons are late Ladinian (239 Ma) to early Carnian (236 Ma) rather than earliest Triassic, with the younger date also corroborated by a detrital apatite lower‐intercept age of ca. 239 Ma. These revised ages show that the Arcadia Formation vertebrate assemblages do not come from the immediate post‐EPME interval but from the late Ladinian to early Carnian, across the onset of the Carnian Pluvial Episode.","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"20 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739621","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":"Seismic Stratigraphy and Tectonic Evolution of the Forearc Georgia Basin (Upper Cretaceous–Miocene), Canada and USA, With Implications for CO2 Sequestration","authors":"Francyne Bochi do Amarante, Shahin E. Dashtgard, Maziyar Nazemi, Andrew J. Calvert, H. Daniel Gibson","doi":"10.1111/bre.70106","DOIUrl":"https://doi.org/10.1111/bre.70106","url":null,"abstract":"The Georgia Basin in southwest Canada and northwest USA is a Late Cretaceous to Cenozoic forearc basin that transitioned into a forearc depression in the Eocene following uplift of the forearc high (Vancouver Island). Both the tectonostratigraphic transition of the Georgia Basin from a conventional forearc basin to a forearc depression and the CO₂ sequestration potential in the basin overall remain poorly understood due to limited subsurface data and complex tectonic histories. This study uses 2D seismic and well data to reconstruct the subsurface architecture of the Whatcom Sub-Basin, which is the southeastern depocenter of the Georgia Basin. The Whatcom Sub-Basin exhibits a wedge-shaped geometry and thickens to the south and west; the thickest strata exceed 7000 m and are located east of the Outer Island Fault and below the Strait of Georgia. Basin architecture is shaped by NE-SW and NW-SE normal faults, including the Outer Island Fault which exhibits 5.9 km of vertical displacement. Four key tectono-stratigraphic units are identified: the lower and upper Nanaimo Group, Huntingdon Formation, and Boundary Bay Formation. These units document episodes of erosion and tectonic reorganization and are separated by basin-margin disconformities that transition to correlative conformities with localized erosion toward the basin center. The Upper Cretaceous Nanaimo Group (both lower and upper) records the initial phase of deposition within a forearc basin and its thickness is controlled by faults and underlying structural highs and lows of the Coast Plutonic Complex. In contrast, the overlying Huntingdon and Boundary Bay formations display more tabular geometries that were deposited in a forearc depression. Both fault density and throw decrease upsection and record the shift to relative tectonic quiescence in the Cenozoic. An eastward reduction in deformation demonstrates asymmetric strain distribution. The evolutionary pathway of the Georgia Basin makes it an exceptional example of forearc depression development, and the architecture of strata therein suggests there is significant potential for CO₂ storage. Specifically, the broad extents, consistent thickness and limited faulting of the Huntingdon and Boundary Bay formations suggest both intervals are favourable targets for CO₂ storage. Future high-magnitude earthquakes may reactivate faults that crosscut the sedimentary fill; however, CO₂ leakage risk may be reduced through mineral trapping and by injecting CO₂-water solutions in areas where faulting is minimal. By linking tectonic events to stratigraphic architecture, this study not only provides new insights into the multi-phase evolution of the convergent-margin Georgia Basin, from forearc basin to forearc depression, but also demonstrates how such systems can provide favourable geological conditions for carbon sequestration.","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"41 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147739619","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":"Detachment and Accretion‐Related Syn‐Rift Seaward Dipping Sequences in the NW South China Sea","authors":"Peng Chao, Gianreto Manatschal, Pauline Chenin, Jianye Ren","doi":"10.1111/bre.70103","DOIUrl":"https://doi.org/10.1111/bre.70103","url":null,"abstract":"Seaward‐dipping sequences (SDS) are typically observed in sediment‐driven progradation of slope deposits in post‐rift sequences, or along magma‐rich rifted margins, where they are primarily formed by subaerial lava flows and referred to as seaward dipping reflections (SDRs). However, new seismic reflection data from the sediment‐rich northwestern South China Sea (NW‐SCS) reveal the existence of SDS in sediment‐rich syn‐rift sequences, here referred to as syn‐rift sedimentary SDS. Based on a detailed tectono‐stratigraphic analysis, we describe how these syn‐rift sedimentary SDS differ from magmatic SDRs and propose a conceptual model for their formation. We show that the formation of these sequences is most likely controlled by a combination of high sediment supply rates, rapid subsidence and creation of horizontal accommodation space, first along large‐offset detachment faults and later, during breakup, by magmatic accretion. While inner magmatic SDRs typically form in subaerial conditions above continent‐dipping faults, we suggest that syn‐rift sedimentary SDS can derive from turbiditic flows in a relatively deep‐water environment above oceanward‐dipping detachment faults and/or interfinger with magmatic additions. Finally, we discuss the implications of syn‐rift sedimentary SDS for the interpretation of rifted margins in general.","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"66 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696142","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 Change From a Marine to a Continental Setting in the Late Triassic of the Western Yangtze Craton: Constraints From the Sedimentary Record and Paleogeographic Significance","authors":"Shuyue Zhu,&nbsp;Lei Liu,&nbsp;Kang Chen,&nbsp;Guangguang Yang,&nbsp;Xinyu Yan,&nbsp;Chao Zheng,&nbsp;Lei Zhao,&nbsp;Hongde Chen,&nbsp;Nachuan Song,&nbsp;Zexin Du","doi":"10.1111/bre.70100","DOIUrl":"10.1111/bre.70100","url":null,"abstract":"<div>\u0000 \u0000 <p>In the Late Triassic, the western Yangtze Craton was located within the oblique subduction and collision setting of the South and North China Blocks as the Paleo-Tethys Ocean retreated westward. The Upper Triassic Xujiahe Formation constitutes well-preserved sedimentary records from the marine–continental transition. However, there are spatiotemporal discrepancies in provenance, and the timing of the marine–continental transition remains vague, thereby restricting our understanding of the tectonosedimentary history of the craton. Based on field and core observations, lithic assemblages, detrital zircon U–Pb ages, gravel composition and seismic data, six major provenance areas are identified: the Songpan-Ganzi Terrane, the Longmenshan Thrust Belt, the South Qinling Orogenic Belt, the Micang-Dabashan Thrust Belt, the Jiangnan-Xuefeng Thrust Belt and the old crust of the Kangdian region. Marine sediments deposited during the early formation of the Longmenshan Foreland Basin were sourced from the South Qinling Orogenic Belt and were primarily deposited as distal braided-river deltas. During later development of the Longmenshan Foreland Basin, the northern and central Longmenshan Thrust Belt was uplifted and formed fan deltas in northwestern Sichuan. Distal braided-river deltas in the northeast originated from the South Qinling Orogenic Belt. During the Dabashan Uplift period, the Longmenshan Thrust Belt had been fully uplifted, the sea completely receded, and terrestrial lacustrine basin deposits developed. The uplift of the South Qinling Orogenic Belt forced the Micang-Dabashan Thrust Belt into a thrust–nappe phase that produced braided-river delta deposits. This spatiotemporal basin–orogen coupling highlights the importance of using lithology, stratigraphy and sedimentary facies characteristics to reconstruct the closure of the Paleo-Tethys Ocean and the Late Triassic tectonic-sedimentary evolution of East Asia tectonic domain, and offers a framework for interpreting similar geologic settings.</p>\u0000 </div>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147586609","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":"Role of Complex Crustal and Basinal Structures in Onset of an Intracratonic Rift System: An Example From the Onshore Potiguar Basin, Brazilian Equatorial Margin","authors":"David L. de Castro,&nbsp;Diógenes C. Oliveira,&nbsp;Germano Melo Jr,&nbsp;Gilsijane V. Ramos,&nbsp;Alanny C. C. Melo,&nbsp;Sidnei P. Rostirolla","doi":"10.1111/bre.70101","DOIUrl":"10.1111/bre.70101","url":null,"abstract":"<p>This study promotes a comprehensive geophysical mapping of the Potiguar Basin Precambrian basement with unprecedented detail, using thermomechanical analysis of the lithosphere, advanced anomaly enhancement techniques, an unsupervised semi-automatic mapping method (SOM) and 2D/3D joint magnetic-gravity modelling constrained by seismic and well data. This Early Cretaceous multiphase marginal basin, located at the northeastern end of the Brazilian transform margin of the Equatorial Atlantic, conceals in its onshore portion an aborted rift overlain by thin post-rift deposition. The combined analysis of Curie-Point Depth, Effective Elastic Thickness and Moho relief reveals six distinct crustal domains, providing a refined understanding of the lithospheric structure and its response to the plate-driven motion that caused the crustal thinning and rifting. Analysis of magnetic and gravity patterns, lineaments and SOM populations integrated with magnetic susceptibility-density models and key geophysical transects over the study area demonstrates the complex Precambrian basement grain dominated by intensively deformed shear zones and sets of grabens and horsts within the rifted zone. Our results highlight that the Potiguar Rift intricate internal architecture preserves evidence of the strong structural control exerted by the pre-existing structural framework on the nucleation and evolution of this intracratonic rift, and its subsequent abandonment. This geological setting emphasizes the Potiguar Basin as a key case study of tectonic inheritance role at the lithospheric, continental, basinal, and fault-scales.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147586610","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":"Tectonostratigraphic Evolution of the Guyana Basin: Implications for Sediment Routing and Slope Stability","authors":"Deron Saul,&nbsp;Uisdean Nicholson","doi":"10.1111/bre.70097","DOIUrl":"10.1111/bre.70097","url":null,"abstract":"<p>The Guyana Basin developed in an evolving tectonic setting, but a lack of subsurface data has limited understanding of its tectonic and sedimentary evolution through time. This study uses extensive, newly available 2D seismic reflection and exploration well data to develop a regional tectonostratigraphic framework, to reconstruct sediment accumulation and constrain sediment routing to the basin through time. Five megasequences (MS-0 to MS-4; oldest to youngest) are defined, each representing a distinct phase of basin fill. MS-0 corresponds to the pre- and syn-rift phases of the Central Atlantic rift, marked by folded volcano-sedimentary units. MS-1 (Middle Jurassic–Aptian) represents the post-rift phase of the Central Atlantic, characterised by low sedimentation rates and isolated depocenters likely fed by nearby continental sources from the Guyana margin, and possibly adjacent conjugate margins in North America and Africa. MS-2 (Aptian–Albian) represents the Equatorial Atlantic syn-rift and transform phase, marked by the development of the Equatorial Atlantic Fracture Zone (EAFZ) and the emergence of a southeastern slope depocenter. MS-3 (Albian–Middle Miocene) corresponds to the Equatorial Atlantic passive margin phase of the basin, with sediment transported through large canyon systems, likely indicating increased riverine flux from the Guyana margin. MS-4 (Upper Miocene–Recent) reflects ongoing passive margin sedimentation and the development of a fold-and-thrust belt in the northwestern basin due to the collision between the Caribbean and South American plates. About 41% of the total sediments of the Guyana Basin were deposited in the last ~11.6 Myr, driven by a ~40 MTa⁻¹ sediment flux primarily from the Amazon River–Guiana Current system. This order of magnitude increase in sedimentation rate in the Miocene corresponds with the onset of widespread mass transport deposits, indicating that rapid sedimentation and disequilibrium compaction preconditioned the continental slope for repeated failure. This has important implications for slope stability, with large-volume submarine landslides forming a potentially significant landslide and tsunami hazard for subsea infrastructure and coastal populations.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147507222","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":"The Messinian Salinity Crisis Between Italy and Albania: The Peri-Adriatic Depression and Southern Adriatic Basin Records","authors":"Bigi Diego,&nbsp;Lugli Stefano,&nbsp;Manzi Vinicio,&nbsp;Roveri Marco,&nbsp;Milushi Ibrahim","doi":"10.1111/bre.70096","DOIUrl":"10.1111/bre.70096","url":null,"abstract":"<p>We reconstructed the geological evolution of the Albanides during the Messinian salinity crisis (MSC), based on the integration of outcrop and subsurface data from both onshore (peri-Adriatic depression, Albania) and offshore (Southern Adriatic Basin) settings. The lowermost MSC deposit consists of primary bottom-grown gypsum accumulated in marginal basins (Rubjekë, Durres inland; Guri i Cifutit, Vlora) of the peri-Adriatic depression. Facies analysis and Sr. isotope signature allow correlating these deposits with the Primary Lower Gypsum unit (PLG). This unit is truncated on top by an erosional surface that can be correlated in deeper settings (Currilla, Durres coast; Kavaje) with a sharp surface separating evaporite-free, organic-rich, and barren shales below from a clastic evaporite unit above. The unconformity can be regarded as the Messinian Erosional Surface and the clastic evaporites as the local expression of the Resedimented Lower Gypsum (RLG). Seismic and geophysical logs allow following this unit offshore in a WNW direction for hundreds of kilometres. While in the marginal settings the PLG are overlain by marine Pliocene deposits, in the deeper settings (Currilla) the RLG unit is overlain by thick terrigenous deposits that can be subdivided into a lower finer-grained barren shale unit followed upward by a rhythmic alternation of conglomerate or sandstone bodies and shales. The uppermost portion of this unit contains a typical Paratethyan hypohaline faunal assemblage yielding a depleted Sr. signature and thus referable to the Lago-mare unit, which records the final stage of the MSC. In turn, these deposits are followed by Zanclean open-marine sediments. These findings are in good agreement with the 3-stage model of the MSC and enable the reconstruction of basin-scale correlations from the thrust-top and foredeep basins of the Albanides and the Apennines, through the Adria foreland.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147496218","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":"Quantifying Multi-Source Sediment Supply in a Tropical Foreland Basin (Oligocene-Miocene Nyalau Formation, Borneo)","authors":"Ekundayo J. Adepehin,&nbsp;Yi N. Fong,&nbsp;Eduardo Garzanti,&nbsp;Hariri M. Arifin","doi":"10.1111/bre.70099","DOIUrl":"10.1111/bre.70099","url":null,"abstract":"<p>Petrographic, mineralogical and geochemical analyses and 803 published detrital zircon U–Pb ages are here integrated to provide the first quantitative provenance analysis of the Oligocene-Miocene Nyalau Formation in the Sarawak Basin foreland basin, northwest Borneo. Statistical unmixing reveals that simple two-source models are insufficient: three distinct sources contributed sediment—the Malay-Thai Peninsula (58%), the Rajang fold-thrust belt (31%) and a previously unrecognised component (11%) characterised by syn-depositional Oligocene-Miocene volcanic zircons and Neoproterozoic populations absent from the other two established sources. This third source represents contemporaneous magmatic input plus recycled cratonic material from unexposed Bornean basement. Long-distance axial drainage from the Malay-Thai Peninsula dominated over proximal orogenic input from the Rajang fold-thrust belt. Compositional variations record coupled tectonic-climatic controls: quartz-rich intervals with high ZTR indices reflect extensive recycling coupled with prolonged weathering, whereas lithic-rich intervals indicate enhanced transverse input plausibly modulated by relative sea-level and monsoonal discharge variability. This quantitative three-source framework demonstrates that statistical provenance unmixing can reveal cryptic sediment contributors missed by binary mixing models, providing critical insights into tropical foreland basin evolution during major Oligocene-Miocene geodynamic reorganisation.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70099","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478178","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":"Pockmarks, Mud Volcanoes and Hydrocarbon Seeps in the Northern Gulf of Mexico: Trends and Controls on Widespread Fluid and Gas Venting","authors":"Muhedeen A. Lawal,&nbsp;Ann E. Cook,&nbsp;Alexey Portnov,&nbsp;Aditya Kumar","doi":"10.1111/bre.70095","DOIUrl":"10.1111/bre.70095","url":null,"abstract":"<p>The release of hydrocarbons, pore water and fluidized sediments impacts seafloor morphology, marine biogeochemical cycling and subsurface hydrocarbon resources. However, the basin-scale occurrence and controls on fluid seepage remain poorly constrained. Herein, we combine datasets that used bathymetry to map pockmarks and mud volcanoes with water column acoustic data that identified gas seeps in the northern Gulf of Mexico. Then, we map hundreds of new pockmarks and mud volcanoes using newly released industry seismic data. We observe strong water depth-dependent patterns: pockmarks cluster at 330–605 m, while mud volcanoes are most common at less than 1000 m. The downslope decline in the number of pockmarks and mud volcanoes corresponds to the basinward thickening of the gas hydrate stability zone, as well as thicker and broader underlying salt masses, indicating potential controls on fluid seepage. Furthermore, water column gas plumes, pockmarks, and mud volcanoes cluster above salt-cored ridges and associated fault networks, demonstrating that seepage is non-random and controlled by localized geological structures. By scaling the abundance of active seeps against flux rates from representative vents, we make a first-order estimate of total hydrocarbon flux ranging between ~5.6–46 × 10⁷ tons year⁻¹ for the northern Gulf of Mexico. Our analysis further reveals that despite these estimates, a multitude of seeps remain undocumented across the region, indicating that the true extent of hydrocarbon release is most likely greater than currently recognized. Ultimately, these findings are vital for making informed decisions for subsurface hydrocarbon resource exploration, flux estimation, marine habitat assessment, CO₂ sequestration and geohazard assessment in marine sedimentary basins.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147462132","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":"Depositional Interplay Between the Ancestral Rocky Mountains and Ouachita–Marathon–Sonora Orogenies: Insights From Provenance Records in the Late Palaeozoic Marfa Basin, West Texas, USA","authors":"Sandra Juárez-Zúñiga,&nbsp;Daniel F. Stockli,&nbsp;Benjamin Johnson,&nbsp;Timothy F. Lawton","doi":"10.1111/bre.70098","DOIUrl":"10.1111/bre.70098","url":null,"abstract":"<p>The Marfa Basin in West Texas is a late Palaeozoic synorogenic depocenter associated with regional deformation linked to the Ancestral Rocky Mountains (ARM) and Ouachita–Marathon–Sonora (OMS) orogenies in southwestern Laurentia. Basin strata range in age from Middle Pennsylvanian to the middle Permian and include the Cieneguita, Alta, Pinto Canyon, Rose Mine and Mina Grande Formations. Sandstone petrography and detrital zircon (DZ) U–Pb and (U–Th)/He double dating data from these strata reveal three tectonically driven sedimentation stages: syntectonic ARM deposition, progressive OMS foredeep deposition and an orogenic transition. The Cieneguita and lower part of the Alta Formations exhibit a Mesoproterozoic DZ age signature (~1318 and ~1076 Ma age peaks) and quartzo-feldspathic sandstone compositions sourced from the adjacent ARM-related Diablo Platform basement uplift in the Middle Pennsylvanian to earliest Permian. In contrast, the upper part of the Alta Formation, as well as the Pinto Canyon and Rose Mine Formations, have peri-Gondwanan DZ age signatures, with Mesoproterozoic (~1069–1036 Ma age peaks), Neoproterozoic–Cambrian (~700–490 Ma) and Palaeozoic (~490–300 Ma) age modes and litho-quartzose sandstone compositions derived from the OMS fold-and-thrust belt and orogenic hinterland during the early to middle Permian. The lower to middle parts of the Alta Formation have alternating DZ age signatures and sandstone compositions from both ARM and OMS sources, revealing that the transition in the sediment supply occurred during the middle Wolfcampian. This transition was not characterised by source mixing, but rather by sediment interfingering alternately sourced from the Diablo Platform uplift and the advancing OMS belt. These observations are confirmed by the DZ He ages, which reveal distinct cooling histories for both source terranes. These results document a switch from ARM- to OMS-related syntectonic deposition in southwestern Laurentia during the early Permian, demonstrating that ARM-driven deformation largely preceded the continental collision along the Marathon segment of the OMS orogen.</p>","PeriodicalId":8712,"journal":{"name":"Basin Research","volume":"38 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bre.70098","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147465000","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}