Article
Geography, Physical
Naima Benaouiss, Abdelilah Tourani, Sylvie Bourquin, Nour-Eddine Jalil
Summary: Based on detailed sedimentological and palaeosol analysis, this study characterizes the depositional environment and climate evolution from the late Permian to the early Middle Triassic. The results show that the late Permian in Morocco was dominated by a distal fluvial fan environment under arid to semi-arid conditions, while the early Triassic featured aeolian deflation lag, debris flow lobes, and sheetflood ephemeral alluvial fan deposits. The Marrakech High Atlas basins were characterized by well-developed aeolian dunes in an alluvial fan environment. The study also finds that there was a common climate evolution in Morocco during the Lower Triassic until a newly defined angular unconformity.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geography, Physical
Longyi Shao, Fanghui Hua, Juan Wang, Xingkai Ji, Zhiming Yan, Tianchang Zhang, Xuetian Wang, Shimin Ma, Tim Jones, Huinan Lu
Summary: This study examines palynological successions from the late Permian to the Early Triassic in southwestern China and identifies four distinct palynofloral assemblages. The results suggest that the Permian-Triassic mass extinction had a significant impact on terrestrial vegetation in southwestern China. The findings support the hypothesis that the extinction process of terrestrial vegetation was a two-staged and longer-duration event.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geology
Liang Li, Zhengping Yan, Zhaojun Song, Shucheng Tan, Xiaoliang Li, Wei Xin, Nan Tian, Guan Wang, Chao Wang, Jinyu Li
Summary: The Eastern Kunlun Orogenic Belt is an ideal area for studying crustal reworking and growth, as well as the tectonic setting and evolution of the Paleo-Tethys Ocean. The intermediate-acid intrusive rocks in this region are mainly composed of different types of rocks and have distinct geochemical characteristics and formation processes. The study of these rocks contributes to understanding the growth of the continental crust and its relationship with tectonic processes.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Micha Horacek, Leopold Krystyn, Aymon Baud
Summary: Joachimski et al. conducted geochemical investigations on seawater temperature changes across the Permian-Triassic Boundary (PTB). However, due to an incorrect biochronology, their reported temperature changes showed discrepancies compared to the global stratotype section and point.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Wenwei Guo, Jinnan Tong, Qi He, Mark W. Hounslow, Huyue Song, Jacopo Dal Corso, Paul B. Wignall, Jahandar Ramezani, Li Tian, Daoliang Chu
Summary: A detailed magnetostratigraphic study was conducted on the Shichuanhe section in North China, providing a magnetic polarity scale for the Late Permian-early Middle Triassic interval. The study reveals consistent results with previous research, enabling interregional correlations. The established magnetostratigraphic framework and carbon isotope chemostratigraphy offer insights into the timing of terrestrial ecological crisis in North China.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Jiaheng Shen, Yi Ge Zhang, Huan Yang, Shucheng Xie, Ann Pearson
Summary: This study presents a high-resolution record of atmospheric CO2 and marine phytoplankton community structure during the Permian-Triassic mass extinction. The findings suggest that the first extinction was associated with a minimum CO2 concentration, followed by a rapid rise to a prolonged high CO2 interval. Cyanobacteria played an increasingly dominant role in marine export production between the two extinction events.
Article
Geology
Xu Wang, Liu FuLai, Ji Lei, Wang Fang, Xu WenTao, Wang Dan
Summary: This study focused on the petrogenesis and tectonic settings of Middle Permian-Late Triassic magmatic rocks in the Deqen-Weixi area of the Sanjiang Orogenic Belt. Through field investigation, petrological study, zircon U-Pb isotopic dating, and major and trace element analyses, the researchers were able to determine the formation ages and characteristics of basalts, andesites, rhyolites, and sedimentary volcanic breccia in the region. The findings suggest the magmatic rocks were formed through different processes such as partial melting, fractional crystallization, crustal assimilation, and interaction between sediment derived melts and a mantle wedge.
ACTA PETROLOGICA SINICA
(2021)
Article
Energy & Fuels
Yang Youxing, Zhang Junfeng, Zhang Jinhu, Gao Yongjin, Zhou Xingui, Sun Xiangcan, Wen Lei, Miao Miaoqing
Summary: Based on field geological survey, seismic data interpretation and analysis of drilling and logging data, this study analyzed the geological structure evolution, stratigraphic sedimentary filling sequence, and sedimentary system around Bogda Mountain. The tectonic evolution was divided into nine stages, with the Middle-Late Permian to Middle-Late Triassic period characterized by the development of intracontinental rift, foreland basin, and inland depression basin, resulting in different sedimentary facies such as lake, fan delta, and braided river delta.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Geography, Physical
Yunfei Huang, Jinnan Tong, Li Tian, Haijun Song, Daoliang Chu, Xue Miao, Ting Song
Summary: This study analyzed the shell-size changes in bivalve fossils from South China during the end-Permian mass extinction and Early-Middle Triassic recovery. The results showed a significant reduction in shell size immediately after the extinction event, followed by a quick rebound and growth in the late Griesbachian. The variations in bivalve size were mainly influenced by factors such as competition, predation, and climatic and oxygen changes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Cheng Cao, Clement P. Bataille, Haijun Song, Matthew R. Saltzman, Kate Tierney Cramer, Huaichun Wu, Christoph Korte, Zhaofeng Zhang, Xiao-Ming Liu
Summary: In the Precambrian, reverse weathering played a key role in the carbon cycle, but marine silicifiers reduced its importance in the Phanerozoic. This study shows that an increase in reverse weathering rates led to a decline in seawater Li isotopes during the Late Permian and Early Triassic, explaining the failure of chemical weathering to decrease atmospheric CO2 levels during this period.
Article
Geology
Alberto Perez-Lopez, Constantino Benedicto, Federico Orti
Summary: The eastern sector of the Mesozoic Iberian basin belongs to the 'Mediterranean type' Triassic, characterized by a stratigraphic record with two carbonate Muschelkalk units. The evolution of the platform morphology from an epicontinental platform to a lower energy rimmed shelf is depicted through the deposition of shallow-water carbonates and tidal/lagoon environments.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Yuzhu Ge, Thomas J. Algeo, Huaguo Wen, Chen Zhang, Yiquan Ma, Chengbo Lian
Summary: The study reveals spatial and temporal variations of marine de-oxygenation during the Permian-Triassic transition in the eastern Paleotethys Ocean, showing shifts from oxygenation to de-oxygenation in different shelf settings. These variations are linked to marine sulfur, nitrogen, and phosphorous cycles, indicating a global shallow-marine de-oxygenation event during the latest Permian mass extinction, potentially caused by volcanic sulfur release from the Siberian Traps Large Igneous Province.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Zhen Xu, Jason Hilton, Jianxin Yu, Paul B. Wignall, Hongfu Yin, Qing Xue, Weiju Ran, Hui Li, Jun Shen, Fansong Meng
Summary: This study reviews the changes in plant species richness and abundance in South China from the End Permian to Middle Triassic, and examines the co-evolutionary relationship between plants and the environment during this critical period. The study identified four phases of plant evolution, with the End Permian Plant Crisis being a significant event that marked a decline in species richness and plant abundance.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Sung Won Kim, Sanghoon Kwon, Youn-Joong Jeong, Weon Seo Kee, Byung Choon Lee, Uk Hwan Byun, Kyoungtae Ko, Deung-Lyong Cho, Paul S. Hong, Seung-Ik Park, M. Santosh
Summary: The Permo-Triassic adakitic magmatism in the southern Korean Peninsula is related to tectonomagmatic processes along the East Asian continental margin. The study provides evidence for a common subduction-accretion system between the North and South China Cratons with different magmatic suites generated by plate interactions. The adakitic magmatism reflects the interaction of slab-derived adakite melts with metasomatized mantle and lower crustal basement.
Review
Geosciences, Multidisciplinary
Andrea Boscaini, Sara Callegaro, Yadong Sun, Andrea Marzoli
Summary: This study reviews the characteristics, CO2 emissions, and causal links of the Siberian Traps, the Central Atlantic Magmatic Province (CAMP), and the Wrangellia formation. The findings highlight the potential role of thermogenic reactions in climate modulation.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geology
L. Stori, J. B. Diez, M. Juncal, R. De la Horra, V Borruel-Abadia, J. Martin-Chivelet, J. F. Barrenechea, J. Lopez-Gomez, A. Ronchi
Summary: This study focuses on the stratigraphical, sedimentological, and palynological aspects of three Middle Triassic continental-marine sedimentary successions in Sardinia, with particular attention to the analysis of the palynological associations sampled there. It also provides a detailed review of all previous palynological publications on the Sardinian Anisian.
JOURNAL OF IBERIAN GEOLOGY
(2022)
Article
Biology
Artai A. Santos, Andre Nel, Ivan Rodriguez-Barreiro, Luis M. Sender, Torsten Wappler, Jose B. Diez
Summary: This study presents new plant and insect remains found in travertine deposits from the Jurassic-Cretaceous boundary in northern Spain. The presence of dragonflies and a unique flora suggests that the hot-spring environment provided an 'ecological oasis' for certain plants and insects.
Article
Geosciences, Multidisciplinary
Lorenzo Marchetti, Giuseppa Forte, Evelyn Kustatscher, William A. DiMichele, Spencer G. Lucas, Guido Roghi, Manuel A. Juncal, Christoph Hartkopf-Froder, Karl Krainer, Corrado Morelli, Ausonio Ronchi
Summary: This study comprehensively revised the late Cisuralian central Pangaea and found a significant increase in drought-tolerant forms during the Artinskian period, possibly due to a global climatic event caused by volcanic eruptions that led to the final melting of the Gondwanan ice sheets.
EARTH-SCIENCE REVIEWS
(2022)
Article
Plant Sciences
Artai A. Santos, Antonio Hernandez-Orue, Torsten Wappler, Jose B. Diez
Summary: This study presents new evidence of plant-insect interactions from the Late Pennsylvanian period in the northern Iberian Peninsula (Leon, Spain). The findings include nine different types of damage on fossil plant specimens, indicating various ecological interactions between different plant groups and insects. The study highlights the importance of these plants as a food source and habitat for insects in the Late Pennsylvanian forests of Spain.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Daniel Ballesteros, Pablo Caldevilla, Ramon Vila, Xose Carlos Barros, Laura Rodriguez-Rodriguez, Manuel Garcia-Avila, Elvira Sahuquillo, Miguel Llorente, Jose Bienvenido Diez, Mercedes Fuertes-Fuente, Susana M. Timon-Sanchez, Arturo de Lombera-Hermida, Ivan Alvarez, Irene Perez-Caceres, Manuel Acebo, Pilar Orche Amare, J. Horacio Garcia, Fidel Martin-Gonzalez, Martin Alemparte
Summary: This article presents a practical Geographic Information System (GIS) database for the management of Courel Mountains Geopark in Northwest Spain. The database includes a wide range of thematic maps and data compiled from various sources, supporting park management, scientific research, and geoconservation actions.
Article
Geosciences, Multidisciplinary
Wenchao Shu, Jinnan Tong, Jianxin Yu, Jason Hilton, Michael J. Benton, Xiao Shi, Jose B. Diez, Paul B. Wignall, Daoliang Chu, Li Tian, Zhixing Yi, Yongdong Mao
Summary: The global pattern of plant evolution during the Permian-Triassic mass extinction is uncertain. Detailed studies in North China reveal five floral transition events, including the disappearance of the gigantopterid flora, the end-Permian mass extinction, and gradual recovery in the Triassic. The record shows the evolution of rainforest and forest communities, followed by herbaceous and shrub marsh communities, and finally the dominance of gymnosperm forest communities in the Middle Triassic.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Engineering, Geological
Frederic Amour, Mohammad Reza Hajiabadi, Hamidreza M. Nick
Summary: This study evaluates the impact of uncertainty in determining the yield stress on the compaction behavior at the regional scale. The results show that the different calculation methods result in variations in accumulated strain and seafloor subsidence, depending on the initial porosity, virgin stress conditions, and stress history of the reservoir. Uncertainty analysis of compaction simulation studies is essential for estimating compaction drive in hydrocarbon fields and identifying potentially failure-prone locations.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
Article
Multidisciplinary Sciences
Qiang Fu, Yemao Hou, Pengfei Yin, Jose Bienvenido Diez, Mike Pole, Manuel Garcia-Avila, Xin Wang
Summary: The existence of an Early Jurassic angiosperm called Nanjinganthus has been a subject of debate among botanists. The use of Micro-CT technology has allowed for non-destructive observation of the internal structure of fossil plants. By using Micro-CT to examine three-dimensionally preserved coalified compressions of Nanjinganthus, our findings support the conclusion that Nanjinganthus is indeed an Early Jurassic angiosperm.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
Artai A. Santos, Luis M. Sender, Torsten Wappler, Jose B. Diez
Summary: Fossils of plant-insect interactions found in Estercuel, northeastern Spain, provide direct evidence of the paleoecological relationships between these two dominant groups. The study of these fossils reveals that angiosperms in the late Early Cretaceous served as an important food and lodging source for insects in the Iberian ecosystems. The diversity of damage on angiosperm leaves suggests a variety of herbivorous insects and interaction strategies with plants in the southwestern Tethys realm during the end of the Early Cretaceous.
Article
Biology
Xin Wang, Jose B. Diez, Mike Pole, Manuel Garcia-Avila
Summary: Although diverse fossil angiosperms have been reported from the Early Cretaceous, their documentation is limited due to poor preservation and limited technologies. In this study, we applied paraffin sectioning and microscopy techniques to document a new fossil reproductive organ, Xilinia gen. nov., from Inner Mongolia, China. The morphological characteristics of Xilinia indicate a transitional stage in plant evolution that is not present in extant plants.
Article
Geosciences, Multidisciplinary
Jens Ormo, Erik Sturkell, Philippe Lambert, Sylvie Bourquin, Jean-Baptiste Cherfils
Summary: The Rochechouart impact structure in France is believed to be one of the largest impact structures in western Europe. Several age datings suggest a Late Triassic age for the impact event. Through the method of visual line-logging, the deposits at Rochechouart were compared to other marine target impact craters, confirming a marine target setting with a water depth of around 200 m. These findings suggest a palaeogeographic target setting in a newly opened seaway, indicating a possible age of impact in the late Rhaetian - Early Jurassic period.
GEOLOGICAL MAGAZINE
(2023)
Article
Engineering, Geological
Seyedbehzad Hosseinzadehsadati, Frederic Amour, Mohammad Reza Hajiabadi, Hamidreza M. Nick
Summary: Reliable prediction of the rate- and fluid-dependent evolution of elasto-plastic strain in chalk is essential for minimizing the risk associated with sea-floor subsidence and subsurface deformation. Experimental observations of hydrostatic pore collapse strength and bulk modulus of water-saturated chalk specimens as a function of temperature and sulfate concentration are quantified. The study investigates the interplay between thermo-hydro-mechanical-chemical processes in chalk reservoirs through numerical experiments.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Mathilde Mercuzot, Camille Rossignol, Sylvie Bourquin, Jahandar Ramezani, Celine Ducassou, Marc Poujol, Laurent Beccaletto, Pierre Pellenard
Summary: This study reports new geochronology from the Aumance and Decize-La Machine basins in northern French Massif Central, indicating synchronous development of the basins during the carboniferous-Permian transition period with high sedimentation rates.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Geosciences, Multidisciplinary
Marie Olivier, Sylvie Bourquin, Guy Desaubliaux, Celine Ducassou, Camille Rossignol, Gautier Daniau, Dan Chaney
Summary: This study investigates the evolution of depositional environments in the Late Pennsylvanian-early Permian of the Paradox Basin in Utah, USA, through detailed sedimentological and high-resolution sequence stratigraphic analyses. The study aims to define a model of landscape evolution, discuss the stratigraphic model, and evaluate the significance of cyclicity in the paleoclimatic context. The findings reveal complex interactions between aeolian, fluvial, and marine environments in the Permian succession of the Paradox Basin, and highlight the importance of high-resolution stratigraphic analyses in understanding cyclicity in the Late Paleozoic Ice Age paleoclimatic context.
Article
Geology
Vladimir Silantiev, Lorenzo Marchetti, Ausonio Ronchi, Paolo Schirolli, Frank Scholze, Milyausha Urazaeva
Summary: Non-marine bivalves from the Collio Formation and Guncina Formation in the Southern Alps are revised and described. The presence of these bivalves in the early-middle Kungurian period suggests a new center of origin and raises questions on biostratigraphy, paleobiogeography, and paleoecology.
RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA
(2022)
Article
Geography, Physical
Huyue Song, Shixue Hu, Michael Benton, Dayong Jiang
Summary: This article examines the end Permian to Middle Triassic interval, which witnessed a significant marine mass extinction and delayed recovery. The focus is on Triassic marine sediments in South China, providing unique documentation of the collapse and recovery of marine ecosystems. Several papers analyze different fossils and their ecological significance, while others study biostratigraphy, reconstruct paleoenvironments, and link records to volcanic eruptions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Mohammad Firoze Quamar, Upasana Swaroop Banerji, Biswajeet Thakur, Ratan Kar
Summary: The Indian Summer Monsoon is a crucial component of the Asian Monsoon System, impacting rainfall, agricultural productivity, and socio-economic growth in India and nearby regions. The central monsoon zone in India is more responsive to strong monsoon phases than weak ones.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Maria Laura Balestrieri, Valerio Olivetti, David Chew, Luca Zurli, Massimiliano Zattin, Foteini Drakou, Gianluca Cornamusini, Matteo Perotti
Summary: This study presents a multidisciplinary provenance study on legacy cores drilled in the central Ross Sea, Antarctica, providing insights into the oscillation of ice flows and advance and retreat phases of the West Antarctic Ice Sheet.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
P. Depuydt, S. Toucanne, C. Barras, S. Le Houedec, M. Mojtahid
Summary: This study provides a comprehensive overview of the dynamics of the upper branch of the Atlantic Meridional Overturning Circulation (AMOC) in the mid-latitudes of the Northeast Atlantic. It focuses on the European Slope Current (ESC) and its glacial equivalent known as the Glacial Eastern Boundary Current (GEBC). The study reveals significant changes in flow strength and ventilation during the glacial and deglaciation periods, as well as a gradual weakening of the slope current during the Holocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Junhee Park, Holly J. Stein, Judith L. Hannah, Svetoslav V. Georgiev, Oyvind Hammer, Snorre Olaussen
Summary: This study reports new Re-Os ages for black shales from Svalbard and evaluates the paleoenvironment during organic-rich shale deposition. The study also proposes correlations of specific Late Jurassic ammonite zones between the Boreal and Tethyan realms.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Guocheng Dong, Weijian Zhou, Feng Xian, Yunchong Fu, Li Zhang, Ling Tang, Pengkai Ding
Summary: The cause of ice-age cycles is still not fully understood, and studying the timing and magnitude of mountain glaciations can provide valuable insights. This study presents new dating results from the Niqingqu Valley in the Tibetan Plateau, showing multiple glacial activities prior to the Penultimate Glacial Maximum. The findings suggest that low atmospheric CO2 content and reduced summer solar insolation/high summer-monsoon precipitation played a role in these glacial fluctuations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Haoran Dong, Zhitong Chen, Yucheng Wang, Jie Chen, Zhiping Zhang, Zhongwei Shen, Xinwei Yan, Jianbao Liu
Summary: Through sediment records from Lake Nanyi in the lower Yangtze, we found that anthropogenic fire activity played a dominant role in the region, and the temporal pattern of fire activity was asynchronous from east to west. Archaeological evidence suggests an inverse relationship between agricultural and population levels and fire intensity during the mid-Holocene, with fire intensity being influenced by the diversity of landscape types associated with pre-historic subsistence patterns. Overall, changes in regional water-level delayed the transition from hunting-gathering to agriculture in the lower Yangtze region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Giovanni Coletti, Giulia Bosio, Alberto Collareta, Or Mordecai Bialik, Eleonora Regattieri, Irene Cornacchia, Gianni Insacco, John Buckeridge
Summary: This paper argues that sessile barnacles are an excellent proxy for palaeoenvironmental reconstructions. The shells of barnacles consist of diagenetically stable low-magnesium calcite and record short-term variations. Analyses of several Western Mediterranean barnacle-rich deposits demonstrate the utility of barnacles as proxies for water depth, distance from the coastline, and hydrodynamic conditions. Moreover, the stable isotope ratios of barnacle shells can provide detailed palaeoenvironmental information.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Feng Wu, Xinong Xie, Wen Yan, Youhua Zhu, Beichen Chen, Jianuo Chen, Mo Zhou
Summary: This paper describes the Quaternary evolution of Meiji Atoll in the southern South China Sea. The findings show how variations in sea surface temperature, eustatic sea level, and tectonics have influenced the development of the atoll. These findings have broader implications for understanding the Quaternary evolution of similar tropical carbonate atolls in the region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Ana Mateos, Ericson Hoelzchen, Jesus Rodriguez
Summary: The Epivillafranchian and the transition to the Galerian was a period of environmental fluctuations and faunal turnover. Hominins and giant hyenas could coexist during the Epivillafranchian, but the transition to the Galerian led to a disruption of the scavenging niche, coinciding with the extinction of P. brevirostris.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Tianyu Du, Wensheng Zhang, Bing Li, Linjing Liu, Yuecong Li, Yawen Ge, Shiyong Yu
Summary: This article presents sedimentary evidence for a dramatic channel displacement of the lower Yellow River about 3000-2600 years ago, and explains the impact of this displacement on the geomorphology and human migration.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Johann Mueller, Michael M. Joachimski, Oliver Lehnert, Peep Mannik, Yadong Sun
Summary: The Late Ordovician mass extinction occurred during an ice age, with maximum ice coverage and a substantial drop in global sea level. This led to the exposure or shallowing of shallow tropical shelf environments. The study suggests that the burial rate of nutrient phosphorus (P) on shelves was minimal during this glacial period, leading to excess bioavailable P entering the open ocean and stimulating phytoplankton production, which in turn lowered oxygen concentrations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Marina Addante, Patrizia Maiorano, Giovanna Scopelliti, Angela Girone, Maria Marino, Samanta Trotta, Antonio Caruso
Summary: This study presents the first high-resolution results on planktonic foraminiferal stable oxygen isotopes and calcareous plankton assemblages, providing insights into the glacial-interglacial variability and North Atlantic climate variability. The research also reveals evidence of the first significant southward migration of the Subarctic Front in the mid-latitudes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Bing-Cai Liu, Rui-Wen Zong, Kai Wang, Jiao Bai, Yi Wang, Hong-He Xu
Summary: Phytogeography plays a vital role in the evolution of plants. This paper describes a new species of a spore-bearing plant from the upper Silurian period in West Junggar, China. By analyzing global Silurian macrofossil records, the study reveals the spatial-temporal distribution of Silurian plant macrofossils and identifies two phytogeographic realms during the Pridoli Epoch.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Francois Fournier, Thomas Teillet, Alexis Licht, Jean Borgomano, Lucien Montaggioni
Summary: This study investigates the temporal evolution of neritic carbonates in the proto-South China Sea to reconstruct East Asian monsoonal currents and winds during the middle to late Paleogene. The results highlight that many of the features of the summer East Asian Monsoon large-scale circulation are rooted in the middle Paleogene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)