Article
Geosciences, Multidisciplinary
Hugo K. H. Olierook, Christopher L. Kirkland, Milo Barham, Matthew L. Daggitt, Julie Hollis, Michael Hartnady
Summary: The study presents a technique to rapidly extract meaningful core model ages from core-rim mixtures, along with a Python-based program for easy application of this approach. The efficacy of the technique is demonstrated on a detrital sample from East Greenland, recovering dates of detrital cores from core-rim mixtures. Caution is advised against using this technique without checking the appropriateness of the underlying assumptions, and chemical means are provided for evaluating the assumptions.
Article
Geography, Physical
Jintao Kong, Zhongjie Xu, Rihui Cheng, Liaoliang Wang
Summary: This study analyzed the source areas and transport modes of Lower Jurassic sediments on the South China continental margin, and found that the distribution system was significantly influenced by Paleo-Pacific subduction. Different regions had distinct primary source areas, with the central region being a vast shallow sea in the Early Jurassic due to large-scale transgression.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geochemistry & Geophysics
Sean P. Gaynor, Melissa Ruiz, Urs Schaltegger
Summary: This study presents high-precision isotope dilution-thermal ionization mass spectrometry (ID-TIMS) U-Pb zircon data from the Carboniferous Punteglias granodiorite in Switzerland. The results show that the zircon crystals have a mixture of two different age components, and the crystallization age of the zircon is determined to be 335.479 +/- 0.041 Ma. Additionally, pretreating the zircon samples with physical and chemical abrasion reduces age dispersion and allows for a more accurate determination of the initial magmatic domains. The high analytical precision of this study is crucial for correctly interpreting complex age spectra.
Article
Geography, Physical
Ce Wang, David A. Foster, Ming Su, Yaping Lei, Letian Zeng, Heqi Cui
Summary: The sedimentary evolution in the northern South China Sea during the Holocene is influenced by climate change, sea level rise, and changes in surface circulation. The study reveals that the sediments in the head of the Shenhu submarine canyons primarily come from the Pearl River system and the drainage systems in Taiwan, with no representation from Hainan and Luzon. The study also highlights the reworking of ancient continental crust and the accretion of Cathaysia and Yangtze blocks during the evolution of the South China Craton.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Chemistry, Analytical
Jia-Long Hao, Wei Yang, Sen Hu, Rui-ying Li, Jiang-Long Ji, Hitesh G. Changela, Yang-Ting Lin
Summary: This paper presents a novel Pb-Pb and U-Pb analytical method at a sub-micron scale using a NanoSIMS with a new RF ion source. The technique allows for high spatial resolution but may introduce depth effects, requiring adjustments in the scan area to eliminate mass fractionation. Results from zircon and lunar samples are in good agreement with reference ages within analytical uncertainties.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Spectroscopy
Ya-Nan Yang, Miaohong He, Yan-Qiang Zhang, Yi-Gang Xu
Summary: NanoSIMS is a powerful instrument for Pb/Pb and U/Pb dating at the submicron scale. This study demonstrates that using O-16(2)- as the primary beam species and an RF oxygen ion source can significantly improve the precision and accuracy of the dating method.
ATOMIC SPECTROSCOPY
(2022)
Article
Geosciences, Multidisciplinary
Fengyu Sun, Gaoshe Cao
Summary: The origin of bauxite in the bauxite and clay deposits of Western Henan has attracted attention. X-ray diffraction and detrital zircon U-Pb dating analysis revealed that the bauxite mainly originated from the North Qinling Orogenic Belt's Caledonian intermediate-acidic granitic rocks, with possible contributions from metamorphic rocks within the same orogenic belt.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Ke Han, Xingke Yang, Huixia Chao, Hujun He, Shiqi Ruan, Yunfeng Gao, Weisheng Zhang, Wei Zhu, Gang Jin
Summary: A W-Mo mineralized region is located along the northern margin of the South Qinling tectonic belt in China, where the mineralization is mainly controlled by faults with different orientations in Cambrian-Ordovician rocks. There are insufficient studies on the mineralization age, relationship between granite and mineralization, ore-forming materials, and metallogenic and tectonic setting in the area.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2021)
Article
Geosciences, Multidisciplinary
Francis Chopin, Remi Lepretre, Mohamed El Houicha, Anne-Sophie Tabaud, Karel Schulmann, Jitka Mikova, Jocelyn Barbarand, Ryma Chebli
Summary: This paper presents new U-Pb geochronological data on granitoids from the Moroccan Meseta Variscan belt. The results show a peak of magmatic activity at 335.2 +/- 0.8 Ma in the Western Meseta and early Visean magmatic activity in the Eastern Meseta. The study also suggests a possible relationship between the magmatic activity and the tectonic events in Northwest Africa. Evaluation: 8 points.
Article
Geosciences, Multidisciplinary
Ruiying Zhang, Wenhao Ao, Yan Zhao
Summary: The provenance and tectonic implications of Late Paleozoic sedimentary rocks in the South Qinling Belt (SQB) indicate the timing and mechanism of the collision between North China Block (NCB) and South China Block (SCB). New LA-ICP-MS zircon U-Pb ages and geochemical composition of metasedimentary rocks from the Foping area in the SQB were reported. The results show that the previously-assumed Neoarchaean or Paleoproterozoic strata were actually deposited in the Late Paleozoic.
JOURNAL OF EARTH SCIENCE
(2023)
Article
Geology
Zhongwu Lan, Gangyang Zhang, Rong Cao, Fei Li, Huawen Cao, Hao Zou
Summary: The Mazhala Au-Sb deposit in South Tibet was found to have formed during the early stage of ca. 35 Ma, which is consistent with the timing of Eocene leucogranite intrusions. The mineralization process of this deposit was mainly influenced by metamorphic water in Paleozoic-Mesozoic metamorphic sedimentary rocks. In contrast, the Cuonadong Sn polymetallic mineralization in Southeastern Tibet was formed during the crustal extension stage in the Miocene, mainly sourced from magmatic water.
ORE GEOLOGY REVIEWS
(2023)
Article
Geochemistry & Geophysics
Tanya A. Ewing, Daniela Rubatto, Kim Lemke, Jorg Hermann
Summary: The rate of burial of supracrustal sedimentary material in the lower continental crust was investigated by determining the age of protolith deposition and subsequent metamorphism in the Malenco Unit. The detrital zircon cores yielded a maximum depositional age of 424 Ma and most dates falling in the range 450-1000 Ma. The study provides important insights into the processes of continental crust formation.
Article
Geosciences, Multidisciplinary
Chang-Hao Xiao, Ping-Ping Yu, Xiao-Hu Liu, Xiang-Chong Liu, Yan-Wen Tang, Wen-Lei Wang, Yu Zhang
Summary: This study uses rock slab and thin section reflection mapping, mu-XRF element mapping, and in situ cassiterite U-Pb LA-ICP-MS ages to investigate the Xinlu Sn-Zn deposit in the Nanling Sn-W belt, South China. The findings provide constraints on the age and processes of Sn mineralization and discuss the role of the Paleo-Pacific plate in the formation of Sn-W mineralization in the Nanling Sn-W belt.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
A. Zeh, A. H. Wilson
Summary: The study reveals a switch in sediment provenance between the lower and upper Mozaan Group. The lower Mozaan Group sediments originated from the surrounding proto-Kaapvaal Craton, while the upper Mozaan Group sediments were mainly derived from a juvenile hinterland, which is similar to the sources for the Central Rand Group sediments. Differences in zircon shape parameters reflect differences in depositional environments.
PRECAMBRIAN RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Jack E. Stirling, Anthony I. S. Kemp, Steven W. Denyszyn
Summary: The article investigates the geological history and formation process of the Cordilleran Bega Batholith, the largest I-type granite batholith in the Lachlan Fold Belt of southeastern Australia. By determining the geochronological ages of different plutonic rocks, it was found that these rocks have a long duration of formation, large overall volume, and continuity with other types of granites, suggesting a common source.
Article
Geosciences, Multidisciplinary
Chenghu Zhou, Hua Wang, Chengshan Wang, Zengqian Hou, Zhiming Zheng, Shuzhong Shen, Qiuming Cheng, Zhiqiang Feng, Xinbing Wang, Hairong Lv, Junxuan Fan, Xiumian Hu, Mingcai Hou, Yunqiang Zhu
Summary: The establishment of the geoscience knowledge graph marks a new era in geoscience research, transitioning from traditional knowledge systems to computer-understandable and operable patterns driven by big data. It integrates various geoscience knowledge elements to construct a comprehensive geoscience knowledge representation model, and facilitates collaboration among global geoscientists to construct high-quality professional knowledge graph. This advancement not only deepens geoscience big data analysis but also drives the development of high-precision geological time scales and intelligent maps, leading to major theoretical breakthroughs in spatiotemporal big data research.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Quan-feng Zheng, Hua Zhang, Dong-xun Yuan, Yue Wang, Wen-qian Wang, Chang-qun Cao, Shu-zhong Shen
Summary: This study reconstructs the variations in benthic marine oxygen levels from the Late Permian to the Early Triassic in the Shangsi section, China, using high-resolution trace fossil data and other redox-sensitive proxies. The results show the presence of both high-frequency and long-term variations in benthic oxygen levels, as well as an anoxia event during the middle-late Wuchiapingian and a global oxygenation event during the Changhsingian.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geochemistry & Geophysics
Feifei Zhang, Richard G. Stockey, Shuhai Xiao, Shu-zhong Shen, Tais W. Dahl, Guang-Yi Wei, Mengchun Cao, Ziheng Li, Junyao Kang, Ying Cui, Ariel D. Anbar, Noah J. Planavsky
Summary: The Earth's redox evolution is believed to have played a significant role in the evolutionary history of the biosphere. However, the relationship between shifts in marine redox conditions and key biotic events is still debated. This study fills a gap in our understanding of global marine redox evolution during the Tonian Period and provides evidence of extensive shallow marine anoxia.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Feifei Zhang, Jiri Fryda, Mojtaba Fakhraee, Yi-bo Lin, Guang-Yi Wei, Mengchun Cao, Na Li, Jianlin Zhou, Barbora Frydova, Haizhen Wei, Shu-zhong Shen
Summary: The mid-Ludfordian Lau carbon isotope excursion is the largest positive carbon isotope excursion in the Phanerozoic, coinciding with the biodiversity loss of many marine animal clades. The main driver of this excursion has not been determined, but new research suggests that shallow water anoxia is the primary driver rather than enhanced marine productivity.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Shu-zhong Shen, Dong-xun Yuan, Charles M. Henderson, Lance L. Lambert, Yi-chun Zhang, Douglas H. Erwin, Jahandar Ramezani, Xiang-dong Wang, Hua Zhang, Qiong Wu, Wen-qian Wang, Jonena M. Hearst, Jun Chen, Yue Wang, Wen-kun Qie, Yu-ping Qi, Bruce R. Wardlaw
Summary: The GSSP for the base of the Capitanian Stage was proposed in 1999 in West Texas, USA, but the official paper and index fossils have not been properly documented. Based on carbon isotope and magnetostratigraphic studies, the base and boundary of the Capitanian Stage have been constrained at 264.28+/- 0.16 Ma.
Article
Geography, Physical
Qiang Fang, Huaichun Wu, Shu-zhong Shen, Junxuan Fan, Linda A. Hinnov, Dongxun Yuan, Shihong Zhang, Tianshui Yang, Jun Chen, Qiong Wu
Summary: This study investigates the response of tropical climate to the late Paleozoic deglaciation, the Earth's first transition from icehouse to greenhouse. By analyzing deep marine carbonate records in South China, the study reveals the complex linkage between low and high latitudes during this transition. The results show that in the final stage of the Early Permian icehouse, the delivery of moisture from low to high latitudes was reduced, facilitating the development of tropical coal forests. In the greenhouse condition, a rise in atmospheric pCO(2) resulted in continental drying and ocean stagnation. Furthermore, obliquity cycles triggered ice-sheet expansion and increased tropical precipitation during the icehouse condition.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geography, Physical
Dong-xun Yuan, Yi-chun Zhang, Feng Qiao, Hai-peng Xu, Qi Ju, Shu-zhong Shen
Summary: A late Kungurian fauna including conodonts and fusulines has been reported from the limestone units in the South Qiangtang Block in Tibet, indicating warm conditions during deposition and suggesting the existence of a wide ocean between the South Qiangtang Block and the Lhasa Block during this period.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Review
Geosciences, Multidisciplinary
Boheng Shen, Shuzhong Shen, Qiong Wu, Shuichang Zhang, Bin Zhang, Xiangdong Wang, Zhangshuai Hou, Dongxun Yuan, Yichun Zhang, Feng Liu, Jun Liu, Hua Zhang, Yukun Shi, Jun Wang, Zhuo Feng
Summary: This study critically reviews the chronostratigraphy and biostratigraphy of the latest Carboniferous and Permian in the North China Block and provides insights into the stratigraphic correlation and geological events. The study also estimates the amplitude of sea-level changes and highlights the favorable period for coal accumulation during the late Carboniferous and early Permian. The climatic shift during the Permian is attributed to the northward migration of the Pangea and the closure of the Paleo Asian Ocean.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Wen-qian Wang, Feifei Zhang, Shu-zhong Shen, Martin Bizzarro, Claudio Garbelli, Quan-feng Zheng, Yi-chun Zhang, Dong-xun Yuan, Yu-kun Shi, Mengchun Cao, Tais W. Dahl
Summary: The redox chemistry change in ancient oceans has had a significant impact on the evolutionary trajectories of animals. Uranium isotopes in marine carbonate sediments have been used to quantify the oxygenation state of the oceans throughout geological history. However, diagenesis processes can introduce uncertainties in these measurements. This study examines the potential of using articulate brachiopod shells as diagenetically resistant materials to accurately record the ancient seawater conditions. Results show that approximately 53% of the shells preserve the primary seawater signals. The study also reveals four episodes of expanding marine anoxia during the Permian, which are temporally correlated with periods of volcanism. The last two anoxic events coincide with or precede the end-Guadalupian and end-Permian mass extinctions, confirming the importance of marine anoxia in driving marine animal extinctions.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Multidisciplinary Sciences
Funing Sun, Wenxuan Hu, Jian Cao, Xiaolin Wang, Zhirong Zhang, Jahandar Ramezani, Shuzhong Shen
Summary: This study reports the sustained and intensified microbial methane cycling in Lake Junggar in northwestern China during the Early Permian climate warming, and suggests that the methane emissions from the lake may have played a positive feedback role in the end of the Late Paleozoic Ice Age.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Ruoyu Sun, Yi Liu, Jeroen E. E. Sonke, Zhang Feifei, Yaqiu Zhao, Yonggen Zhang, Jiubin Chen, Cong-Qiang Liu, Shuzhong Shen, Ariel D. D. Anbar, Wang Zheng
Summary: According to the evaluation of mercury isotopes from the Meishan Section, China and a global box model, marine photic zone euxinia (PZE) with toxic, sulfide-rich conditions was likely an important kill mechanism and obstacle to recovery during the end-Permian mass extinction (EPME), alongside the dominant influence of volcanism. This model provides further evidence that PZE played a crucial role in both the EPME and the impeded recovery afterward.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Shenglin Jiao, Hua Zhang, Yaofeng Cai, Jianbo Chen, Zhuo Feng, Shuzhong Shen
Summary: In this study, high-resolution PAHs in a non-marine P-T transitional sequence from Southwest China were investigated. The consistent distribution patterns of PAHs and the positive correlation between PAH contents in the whole sequence indicate a common source or process. The increase in PAH ratios during the Late Permian suggests high-temperature wildfire events, while the extremely low PAH contents in the Early Triassic indicate a fuel shortage after mass deforestation and a change in vegetation.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Jianbo Chen, Guangyi Sun, Binjian Lu, Rong-yao Ma, Zhuang Xiao, Yao-feng Cai, Hua Zhang, Shu-zhong Shen, Feifei Zhang, Zhuo Feng
Summary: This study presents high-resolution Hg concentration and isotope records of two drill cores, showing significant Hg enrichments in coastal lowlands and background Hg levels in terrestrial uplands. These findings suggest that the Hg enrichments in the coastal lowland were primarily caused by enhanced terrestrial influxes, while the terrestrial upland had minimal influence from terrestrial and/or atmospheric depositions. A comprehensive evaluation of multiple lines of evidence is necessary to establish a robust causal link between volcanic activities and Hg enrichments in sedimentary records.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
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)
