Gondwana Research最新文献

{"title":"Paleoenvironmental implications of Deccan volcanism relative to the Cretaceous-Paleogene (K-Pg) mass extinction: evidence from the ‘red bole’ record","authors":"Nikhil Sharma ,&nbsp;Thierry Adatte ,&nbsp;Torsten Vennemann ,&nbsp;Blair Schoene ,&nbsp;Gerta Keller ,&nbsp;Syed F.R. Khadri","doi":"10.1016/j.gr.2025.05.018","DOIUrl":"10.1016/j.gr.2025.05.018","url":null,"abstract":"<div><div>Large Igneous Provinces (LIPs) have been widely investigated for their potential role in mass extinction events. High-precision U-Pb zircon geochronology of the Deccan Traps indicates that peak eruptive activity began approximately 250 kyr before the Cretaceous-Paleogene (K-Pg) boundary and persisted into the early Danian, suggesting a causal link between Deccan volcanism and the K-Pg mass extinction. Within the Deccan stratigraphy, intra-volcanic weathered horizons known as red boles represent intervals of volcanic quiescence and serve as critical archives of paleoenvironmental conditions during the Deccan Traps emplacement. These red boles have been studied using a suite of geochemical proxies including major element composition, bulk rock and clay mineralogy, weathering indices, paleo-precipitation estimates, and stable isotope analyses to assess climatic and environmental changes induced by volcanism.</div><div>Our multiproxy geochemical analysis of 26 red bole sections across the Deccan stratigraphy reveals that they are enriched in immobile elements such as Al and Fe³⁺. The clay fraction is dominated by smectite, suggesting semi-arid conditions with fluctuating moisture availability rather than persistent monsoonal climate. Weathering indices indicate progressive chemical weathering, likely exacerbated by acid rain associated with increasing volcanic emissions. Stable hydrogen and oxygen isotope compositions further suggest episodes of hydroclimatic instability that intensified alongside peak Deccan eruption rates, particularly near the K-Pg boundary.</div><div>These findings reinforce the hypothesis that Deccan volcanism played a significant role in shaping Late Cretaceous climate variability and contributed to the environmental stresses leading up to the K-Pg mass extinction.</div></div>","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"146 ","pages":"Pages 54-65"},"PeriodicalIF":7.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280690","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":"Comment on “Sediment provenance and depositional systems during Paleozoic tectonic and climatic transitions in the eastern Precordillera of Argentina” by Regier et al. 2025, Volume 139, Pages 179–203","authors":"Juan A. Dahlquist","doi":"10.1016/j.gr.2025.05.015","DOIUrl":"https://doi.org/10.1016/j.gr.2025.05.015","url":null,"abstract":"","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"1 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304940","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":"Biogeographic network analysis of the Late Triassic dinosaurs and new insights on their geodispersal routes: Reply to the discussion by R.T. Müller, M.S. Garcia, L.V.S. Damke and A.O. Fonseca","authors":"Sulagna Sen, Sourav Bagchi, Sanghamitra Ray","doi":"10.1016/j.gr.2025.05.014","DOIUrl":"https://doi.org/10.1016/j.gr.2025.05.014","url":null,"abstract":"","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"92 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304911","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":"Pathways and challenges of the application of geophysical techniques to multifaceted coalbed methane reservoir characterization","authors":"Zheng Zhao, Dameng Liu, Yidong Cai, Fengrui Sun, Yingfang Zhou","doi":"10.1016/j.gr.2025.05.017","DOIUrl":"https://doi.org/10.1016/j.gr.2025.05.017","url":null,"abstract":"Revealing the distribution patterns of coal reservoir parameters is essential for evaluating the resource potential and guiding the production activities of coalbed methane (CBM). Although direct methods such as sample testing, coal core observation, and well testing measurement are effective, they are time-consuming, costly, and limited by the sampling locations and data volume. Consequently, the precision of regional-scale reservoir characterization based solely on these methods is often insufficient. Therefore, predictive methods based on geophysical technologies have been developed by establishing correlations between reservoir parameters and geophysical data, using direct measurements as labels. These methods offer significant advantages in terms of efficiency and cost-effectiveness, making them highly promising and practically valuable in the CBM field. This study presents a critical review of these advancements. First, the fundamental principles of seismic and geophysical logging are systematically introduced, along with methods for data preprocessing and analysis. Second, based on the differences in response mechanisms of various geophysical datasets to different reservoir parameters, the application advances of these techniques in assessing coal properties, coal structures, permeability, and fluid characteristics are emphasized. These advancements have contributed significantly to reducing exploration costs and improving development efficiency. However, the highly complex and heterogeneous nature of coal reservoirs weakens the correlation between geophysical data and individual reservoir parameters, and the generalizability of existing predictive models remains limited. To overcome these challenges, this paper proposes several key directions for the future development of geophysical technologies in CBM research, including: (1) the development of reservoir evaluation models that integrate geological constraints with algorithmic prediction; (2) the advancement of geophysical theory and the improvement of model generalizability; (3) the establishment of models focused on the spatial distribution characteristics of coal measure reservoir parameters; and (4) the construction of a comprehensive evaluation system that integrates geology, reservoir, and development for CBM.","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"229 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304912","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":"Reply to comment on “Sediment provenance and depositional systems during Paleozoic tectonic and climatic transitions in the eastern Precordillera of Argentina”","authors":"Nicholas A. Regier, Brian K. Horton, Daniel Starck, Facundo Fuentes, Erin E. Donaghy, Michael P. Eddy, Tomas N. Capaldi","doi":"10.1016/j.gr.2025.05.016","DOIUrl":"https://doi.org/10.1016/j.gr.2025.05.016","url":null,"abstract":"","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"10 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304913","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":"Comment on “Biogeographical network analysis of the Late Triassic dinosaurs and new insights on their geodispersal routes” by Sen et al.","authors":"Rodrigo Temp Müller, Maurício Silva Garcia, Lísie Vitória Soares Damke, André Oliveira Fonseca","doi":"10.1016/j.gr.2025.05.013","DOIUrl":"https://doi.org/10.1016/j.gr.2025.05.013","url":null,"abstract":"","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"313 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304915","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":"Provenance analysis of late Pleistocene sediment from IODP site U1477 reveals climate and river basin dynamics in the Zambezi river catchment","authors":"Youhong Gao ,&nbsp;Hucai Zhang ,&nbsp;Xiaonan Zhang ,&nbsp;Lizeng Duan ,&nbsp;Huayong Li ,&nbsp;Ian R. Hall ,&nbsp;Sidney R. Hemming ,&nbsp;Leah J. LeVay ,&nbsp;Junsheng Nie ,&nbsp;Xibin Han","doi":"10.1016/j.gr.2025.05.012","DOIUrl":"10.1016/j.gr.2025.05.012","url":null,"abstract":"<div><div>The provenance of sedimentary material deposited in marginal marine environments offers significant insights into the evolving conditions within adjacent river catchments, thereby revealing the basin dynamics and climate variations. In this study, we used rare earth element (REE) compositions and Sr-Nd-Hf isotope signatures to investigate the provenance of sediments at International Ocean Discovery Program (IODP) Site U1477, located offshore of the Zambezi River mouth, over the past 150 thousand years (ka). These geochemical and isotope proxies indicate that the entire Zambezi River Basin (ZRB) has contributed sediments to the offshore region near the Zambezi River mouth during the last approximately 150 ka. Distinctly unradiogenic ε_Nd and ε_Hf signatures coupled with highly radiogenic ⁸⁷Sr/⁸⁶Sr values are indicative of sediment input from the middle and lower reaches of the ZRB. Conversely, more radiogenic ε_Nd and ε_Hf signatures along with unradiogenic ⁸⁷Sr/⁸⁶Sr values suggest sediment contributions from the upper reaches. The geochemical and isotope data from Site U1477 thus reveal that substantial changes in the sediment provenance occurred during the Late Pleistocene. By integrating our findings with other paleoclimate records from marine sediments and paleolake cores, we infer that the increased contribution of the upper Zambezi sediment sources to the offshore deposits from approximately 40 ka onwards reflects the reestablishment of the sediment supply from both the upper and middle Zambezi at this time. These changes were likely associated with shifts in the regional rainfall patterns across the ZRB, as well as modifications of the drainage divides due to varying sediment loads resulting from active bedrock erosion following the tectonic uplift on the Chobe fault near the Chobe–Zambezi confluence. This study offers novel insights into the Late Pleistocene evolution of the Zambezi drainage system and is essential for accurately reconstructing regional climate and environmental changes.</div></div>","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"146 ","pages":"Pages 25-38"},"PeriodicalIF":7.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270147","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":"Geochronology of the southern Québec Dunnage zone, Canadian Appalachians – new U-Pb zircon data, synthesis and implications for the paleogeography and tectonic setting of the Taconian orogeny","authors":"Alain Tremblay ,&nbsp;Morgann G. Perrot ,&nbsp;Joshua H.F.L. Davies","doi":"10.1016/j.gr.2025.05.010","DOIUrl":"10.1016/j.gr.2025.05.010","url":null,"abstract":"<div><div>Ordovician oceanic crustal rocks of the <em>peri</em>-Laurentian Dunnage zone crop out for &gt; 300 km in the southern Québec Appalachians and consist of ophiolites (Thetford-Mines, Asbestos, Lac-Brompton, and Mont-Orford), Ascot Complex volcanics, and sedimentary rocks of the Saint-Daniel Mélange and Magog Group. The Ascot Complex is the sole occurrence of an Ordovician volcanic arc in the Québec Appalachians and consists of volcanic rocks overlain by black phyllites of the Saint-Daniel mélange. Both the Ascot Complex and Saint-Daniel mélange are overlain by the Magog Group. Laurentian zircon inheritance is found in all these rocks but the nature of the basement over which the ophiolites were obducted, the Ascot complex was formed and accreted, and the overlying sediments have been emplaced has been recently questioned; some studies suggesting that it has a Gondwanan affinity. To confirm the affinity of these rocks, we conducted a new structural and geochronological study for the southern Québec Dunnage zone to propose an up-to-date vision of the tectonic evolution of the Québec Dunnage zone during the Taconian orogeny. We obtained a CA-ID-TIMS U-Pb zircon age of 505.99 ± 0.16 Ma for a <em>syn</em>-volcanic granitic intrusion of the Mont-Orford ophiolite, confirming its late Cambrian age. High-precision U-Pb zircon ages of 474–470 Ma from the Ascot Complex suggest that it belongs to a single volcanic edifice contaminated by Laurentian continental rocks. This explains better the age of the overlying Saint-Daniel Mélange and the detrital zircon ages found at the base of the Magog Group. Field relationships indicate that the ophiolites, the Ascot Complex and the Saint-Daniel Mélange were accreted to Laurentia from c. 475 to c. 462 Ma, before the deposition of the Magog Group. The Québec Dunnage zone units show a strong Laurentian inheritance and/or provenance, which indicate that the nature of their basement is Laurentian, and that the <em>peri</em>-Gondwana Moretown terrane outcropping further south in Vermont does not extend into the Quebec Appalachians.</div></div>","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"146 ","pages":"Pages 1-24"},"PeriodicalIF":7.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254298","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":"A new occurrence of Ediacara soft-bodied biota in the Central Urals, Russia","authors":"Anton V. Kolesnikov,&nbsp;Violetta A. Pan’kova,&nbsp;Vladimir N. Pan’kov","doi":"10.1016/j.gr.2025.05.008","DOIUrl":"10.1016/j.gr.2025.05.008","url":null,"abstract":"<div><div>A new occurrence of <em>Palaeopascichnus</em>, <em>Mawsonites</em>, <em>Hiemalora</em> and hitherto unknown putative rangeomorph organisms is reported from the Ediacaran Chernyi Kamen Formation exposed on the coast of Lake Shyrokovsky near southern slope of Mount Lysaya in Central Urals, Russia. The fossil bearing horizon stratigraphically correlated with absolute depositional age of 563 ± 3.5 Ma obtained from the overlying horizon in Ust’-Sylvitsa Formation. These findings of Ediacara-type soft-bodied fossils not only develop our understanding of their temporal and paleogeographic range, but also demonstrate that palaeontological potential of the Ediacaran of Central Urals, which was remained unattended for many years, has not entirely been realised.</div></div>","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"145 ","pages":"Pages 71-78"},"PeriodicalIF":7.2,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195712","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":"A step toward sustainable development: Role of energy transition, eco-innovation and environmental policy stringency","authors":"Sunil Tiwari, Arshian Sharif","doi":"10.1016/j.gr.2025.04.018","DOIUrl":"https://doi.org/10.1016/j.gr.2025.04.018","url":null,"abstract":"While minimizing environmental impacts and fostering economic growth, energy transition, eco-innovation and environmental policy stringency play crucial roles in the attainment of sustainable development. In this regard, present study aims to investigate the roles of energy transition, eco-innovation, environmental policy stringency and globalization in mitigating CO2 emission and fostering sustainable development. The Method of Moments Quantile Regression (MM-QR) approach is applied to panel data of BRICS countries from 2001 to 2022. Additionally, Fully Modified Ordinary Least Squares (FMOLS) and Dynamic Ordinary Least Squares (DOLS) statistical modules are also used to check the cointegration in panel datasets before applying MM-QR test. Results report the strong negative association between CO2 emission and energy transition, eco-innovation, environmental policy stringency from lower to higher quantiles. Conversely, globalization is negatively association with carbon emission across all quantiles. The study provides policy implications to BRICS nations for the sustainable development through energy transition supported by well-designed environmental policies and eco-innovation.","PeriodicalId":12761,"journal":{"name":"Gondwana Research","volume":"1 1","pages":""},"PeriodicalIF":6.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188947","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}