Article
Geosciences, Multidisciplinary
Qian Feng, Bing Pan, Aihua Yang, Miao Lu, Guoxiang Li
Summary: Small shelly fossils (SSFs) are important for studying the stratigraphy of the Cambrian Terreneuvian. This study focuses on the upper Maidiping Formation in southern Sichuan to understand its SSF assemblages and stratigraphic implications. The results show that the Fandian section has a relatively continuous SSF biostratigraphy and can be correlated with other sections in the region. The discovery of Watsonella crosbyi strengthens its use as a marker for defining the base of Cambrian Stage 2 in South China and other continents.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Paleontology
Christian B. Skovsted, Uwe Balthasar, Jakob Vinther, Erik A. Sperling
Summary: The paper describes a diverse small shelly fossil (SSF) fauna from the early Cambrian Mural Formation in Alberta and British Columbia, Canada, expanding the recorded SSF diversity in western Laurentia. The fauna includes various taxa such as brachiopods, bradoriids, chancelloriids, and hyoliths, with new taxa identified as well. The study suggests the low faunal diversity in western Laurentia may be due to poor sampling of suitable archaeocyathan reef environments, and highlights the potential biostratigraphical significance of certain taxa like the tommotiid Canadiella filigrana.
PAPERS IN PALAEONTOLOGY
(2021)
Article
Geochemistry & Geophysics
Xin Jin, Marco Franceschi, Rossana Martini, Zhiqiang Shi, Piero Gianolla, Manuel Rigo, Corey J. Wall, Mark D. Schmitz, Gang Lu, Yixing Du, Xiangtong Huang, Nereo Preto
Summary: This paper investigates sea-level fluctuations during the Carnian Pluvial Episode (CPE) and provides important insights into the timing and global scale of sea-level changes during this period. The study also highlights a Tethys-wide crisis and recovery of microbial carbonate production and sheds light on commonalities with other geological times when similar transformations in carbonate systems were linked to ocean acidification.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Qiu Hao, Feng Lianjun, Chu Xuelei, Li Luoyang, Zhang Xingliang, Li Jinhua
Summary: Silica-phosphatic nodules in the black shales of the Yanjiahe Formation in the Three Gorges Area of South China have been studied using various analytical techniques. The nodules show a concentric chemical and mineral composition, consisting of a silica-phosphatic core surrounded by a phosphatic zone, a siliceous zone, and a thin pyrite outer rim. The laminated structure and chemical weathering conditions of the black shales influence the formation of the nodules. The phosphatization and silicification processes preserve the small shelly fossils within the nodules.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Geosciences, Multidisciplinary
Zuchen Song, Junfeng Guo, Jian Han, Heyo Iten, Yaqin Qiang, Jiaxin Peng, Jie Sun, Yajuan Zheng, Xinyao Huang, Zhifei Zhang
Summary: The "Pudong New Oriental Teachers' Open Class" event was successfully held in Zhejiang Liao with a total of 184 teachers from all over the country participating. The main purpose of this open class event was to share teachers' teaching experiences and promote the exchange and innovation of teaching methods.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Biology
Xing Wang, Jean Vannier, Xiaoguang Yang, Lucas Leclere, Qiang Ou, Xikun Song, Tsuyoshi Komiya, Jian Han
Summary: Although there is little direct information available on the muscle systems of early animals, this study describes exceptionally preserved muscles in benthic olivooid medusozoans from the basal Cambrian, providing the oldest record of a muscle system in cnidarians. These muscles likely helped early Cambrian jellyfish to develop jet-propelled swimming within the water column.
Article
Biology
Mei Luo, Fan Liu, Yue Liang, Luke C. Strotz, Jiayue Wang, Yazhou Hu, Baopeng Song, Lars E. Holmer, Zhifei Zhang
Summary: Small skeletal fossils from the early Cambrian Guojiaba Formation in southern Shaanxi, China were reported for the first time. The fossils include a wide variety of skeletal clades, such as brachiopods, sphenothallids, archaeocyaths, bradoriids, sponge spicules, echinoderm plates, and trilobite spines. The archaeocyaths found in the Guojiaba Formation are older than those previously described from the Xiannvdong Formation. The fossil assemblages from the Guojiaba Formation resemble those from the upper Yu'anshan Formation (Chengjiang Fauna) in eastern Yunnan Province, supporting the correlation of the Guojiaba Formation with the Chiungchussuan Stage (Stage 3 of Cambrian Series 2).
Article
Paleontology
Lea Devaere, Dieter Korn, Abbas Ghaderi, Ulrich Struck, Alireza K. Bavandpur
Summary: The study on small shelly fossils in the lower Cambrian of northern Iran provides new data from this understudied area, allowing the distinction of two successive microfaunal assemblages.
PAPERS IN PALAEONTOLOGY
(2021)
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
Geology
Christian B. Skovsted, Timothy P. Topper, Stephen McLoughlin, Ove Johansson, Fan Liu, Vivi Vajda
Summary: New fossil discoveries from the Grammajukku Formation in northern Lapland, Sweden, include Small Shelly Fossils (SSF), brachiopods, trilobites, and other marine organisms. These discoveries significantly increase the known diversity of the paleobiota in the region, providing new insights into the biostratigraphy and paleoenvironment of the lower Cambrian in Scandinavia.
Review
Geology
Michael D. Bidgood, Michael D. Simmons
Summary: Cenomanian planktonic foraminifera are important for biostratigraphic correlation and calibration to the geological timescale, but their utility is hindered by ambiguity in age calibration, taxonomic identity, and association with other fossil groups. A simple scheme for low to mid latitudes can provide unambiguous correlation and age calibration.
NEWSLETTERS ON STRATIGRAPHY
(2022)
Review
Geology
Michael D. Bidgood, Michael D. Simmons
Summary: Cenomanian planktonic foraminifera are important tools for biostratigraphic correlation and calibration. However, their utility is hampered by issues of taxonomic identity and uncertainty in age calibration. A review suggests a simple scheme for unambiguous correlation and age calibration.
NEWSLETTERS ON STRATIGRAPHY
(2023)
Article
Geology
Maria Giovanna Corriga, Carlo Corradini, Monica Pondrelli, Hans-Peter Schonlaub, Lorenzo Nozzi, Rossana Todesco, Annalisa Ferretti
Summary: A detailed biostratigraphic investigation of the Valentintorl cliff in the Carnic Alps of Austria revealed a condensed upper Silurian section, with continuity of all conodont biozones observed from the lowermost Ludlow to the upper Pridoli. The study also describes three new conodont species, pending further specimen collection, and presents a general discussion on the hiatus between Ordovician and Silurian sequences in the Carnic Alps.
NEWSLETTERS ON STRATIGRAPHY
(2021)
Article
Geography, Physical
Imre Magyar
Summary: Clinoforms and clinothems play a significant role in the sedimentary record of basins worldwide and can impact chronostratigraphic interpretations. In non-marine basins like the Neogene Paratethyan basins, fossils of environmentally sensitive molluscs are used for chronostratigraphic division and correlation. However, in subsurface settings, the boundaries between clinoforms can lead to confusion in chronostratigraphy. Additionally, dating uncertainties remain high for certain time intervals in the late Neogene and Pliocene.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Geosciences, Multidisciplinary
Fred T. Bowyer, Andrey Yu Zhuravlev, Rachel Wood, Graham A. Shields, Ying Zhou, Andrew Curtis, Simon W. Poulton, Daniel J. Condon, Chuan Yang, Maoyan Zhu
Summary: This study presents a new delta C-13(carb) composite reference curve for the Ediacaran Nama Group and proposes four possible global age models for the Ediacaran-Cambrian transition. These models reveal the variability in the terminal Ediacaran and support the pre-BACE first appearance of Cambrian-type shelly fossils in Siberia and possibly South China.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geography, Physical
Russell D. C. Bicknell, James D. Holmes, Stephen Pates, Diego C. Garcia-Bellido, John R. Paterson
Summary: The Cambrian explosion marked the rapid development of complex marine ecosystems on Earth due to predator-prey interactions, which led to the evolution of biomineralised exoskeletons and shell-crushing predators. Injured trilobite specimens from Kangaroo Island, South Australia show evidence of attacks mostly on the posterior thorax, suggesting predators attacked from behind. Larger individuals were more likely to survive attacks and exhibit healed injuries, indicating smaller individuals were likely consumed during an attack.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Biology
April A. Miller, Sarah M. Jacquet, Evan P. Anderson, James D. Schiffbauer
Summary: This study provides a systematic description of two conulariid species from the Brandon Bridge Formation in Wisconsin, USA, and assesses their taphonomy and preservation within this deposit. The study reveals that the specimens primarily underwent phosphatisation and kerogenization for preservation.
HISTORICAL BIOLOGY
(2022)
Article
Paleontology
Russell D. C. Bicknell, Jessica N. Tashman, Gregory D. Edgecombe, John R. Paterson
Summary: An exceptionally preserved specimen of the horseshoe crab Euproops danae from the Carboniferous in Kansas shows anatomical details of the prosomal musculature, highlighting anatomical conservatism within Xiphosurida. The three-dimensional preservation of muscles in siderite concretions suggests better preservational fidelity and the potential to reveal new anatomical information, particularly regarding labile tissues of arthropods.
PAPERS IN PALAEONTOLOGY
(2022)
Article
Multidisciplinary Sciences
Russell D. C. Bicknell, Yuri Simone, Arie van der Meijden, Stephen Wroe, Gregory D. Edgecombe, John R. Paterson
Summary: This study investigates the feeding habits of different species within the Pterygotidae family of extinct sea scorpions. The results show that the species had variable diets, with some likely feeding on armoured prey such as placoderms. The findings also suggest that an "arms race" may have occurred between eurypterids and armoured fishes during the mid-Palaeozoic.
Article
Biology
Luoyang Li, Marissa J. Betts, Hao Yun, Bing Pan, Timothy P. Topper, Guoxiang Li, Xingliang Zhang, Christian B. Skovsted
Summary: This study reveals that the skeletons of early Cambrian mollusks and hyoliths are composed of fibrous microstructures made of calcite, which had not been discovered before. Additionally, it shows that the shells of these early animals were mainly composed of aragonite. This has important implications for understanding the significance of early biomineralization and its relationship with seawater chemistry.
Article
Geosciences, Multidisciplinary
N. R. Langsford, J. B. Jago
Summary: Widespread tuffs from the lower Cambrian succession in the Arrowie Basin, Flinders Ranges, are mainly found in the lower parts of the Mernmerna Formation and the Billy Creek Formation. These tuffs, including the 'Big Green Tuff', are believed to be explosive subaqueous pyroclastic deposits or ash-flow tuffs. The Billy Creek Formation contains numerous tuff horizons and has a wide distribution range of up to 250 km east-west and 80 km north-south. Further study is needed to identify the source and fully document the tuffs through detailed analysis of whole-rock and trace-element geochemistry.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
M. Rafiei, S. C. Lohr, O. Alard, A. Baldermann, J. Farkas, G. A. Brock
Summary: Glauconite, a prevalent authigenic clay mineral found in marine sedimentary successions, has a long history of dating but fell into disfavor due to difficulties in obtaining pure glauconite separates. Recent advancements in sedimentary petrography and reaction cell mass spectrometry offer the potential for rapid in situ Rb-Sr dating of glauconite, but caution is needed due to burial alteration. This study combines mineral mapping, geochemical characterization, and in situ Rb-Sr dating to address the impact of postdepositional alteration on glauconite and proposes a screening approach for identifying well-preserved glauconite grains.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geosciences, Multidisciplinary
Russell D. C. Bicknell, James D. Holmes, Diego C. Garcia-Bellido, John R. Paterson
Summary: Malformed specimens of the ellipsocephaloid trilobite Estaingia bilobata from the Emu Bay Shale Konservat-Lagerstatte are reported, with most of the malformed specimens clustering among larger individuals. This suggests that larger forms may have successfully escaped predation attempts or represent individuals with old injuries that have healed through subsequent moulting events. The presence of mangled exoskeletons indicates predation on E. bilobata, highlighting its role in the local ecosystem.
GEOLOGICAL MAGAZINE
(2023)
Article
Geology
James B. Jago, James G. Gehling, Nicholas M. Lemon, Richard J. F. Jenkins, Diego C. Garcia-Bellido
Summary: A new enigmatic fossil from South Australia, dating back to the early Cambrian period, is described. The fossil exhibits radial symmetry and has a circular shape with evenly-spaced rays. XRF data shows that there is little difference in composition between the fossil and the surrounding rock. Possible affinities with various organisms are discussed, but no definite assignment can be made.
NEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
(2023)
Article
Paleontology
Harriet B. Drage, James D. Holmes, Diego C. Garcia-Bellido, John R. Paterson
Summary: Trilobites exhibit a wide range of moulting configurations, and there is no true association between moulting behavior and body proportions except for body length. The study highlights the importance of considering museum collection bias in paleontological analyses.
Article
Geosciences, Multidisciplinary
Sarah. M. M. Jacquet, Jeremy-Louis Webb, John Warren Huntley, Tara Selly, James. D. D. Schiffbauer
Summary: The Eocene Pipestone Springs Main Pocket in Montana, USA, is known for its diverse late Eocene mammalian fauna and abundant coprolites. Through analysis of compositional and taphonomic attributes, researchers discovered skeletal fragments, hair molds, lithic fragments, and irregular pores and cracks within two distinct size classes of coprolites. Comparisons between the two size classes revealed valuable insights into the diet and behavior of the coprolite producers.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Biology
Russell D. C. Bicknell, Michel Schmidt, Imran A. Rahman, Gregory D. Edgecombe, Susana Gutarra, Allison C. Daley, Roland R. Melzer, Stephen Wroe, John R. Paterson
Summary: The stem-group euarthropod Anomalocaris canadensis is a large Cambrian apex predator. It is debated whether A. canadensis can masticate or manipulate biomineralized prey using its spinose frontal appendages. This study uses an integrative computational approach to analyze an A. canadensis feeding appendage and finds that it is suited for ripping but not for eating hard prey. The findings provide insights into the feeding ecology of A. canadensis and its impact on Cambrian food webs.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Evolutionary Biology
John R. Paterson, Diego C. Garcia-Bellido, Gregory D. Edgecombe
Summary: Two species of Radiodonta from the Emu Bay Shale in South Australia have been revised based on new field collections and recent advances in knowledge of radiodonts. Anomalocaris briggsi is designated as the type species of a new genus called Echidnacaris, while the less common species is named Anomalocaris daleyae. Oral cones have been assigned to both species, and the oral cone of Echidnacaris briggsi is the best preserved among all known radiodonts. Shared characters of the oral cones support the relationship between Tamisiocarididae and Anomalocarididae. Unique eye characters found in E. briggsi are tentatively regarded as diagnostic for Echidnacaris.
JOURNAL OF SYSTEMATIC PALAEONTOLOGY
(2023)
Article
Communication
Sally Hurst, Matthew Kosnik, Linda Evans, Glenn A. Brock
Summary: The Found a Fossil project conducted a survey to understand the barriers to reporting heritage material in Australia. Results showed confusion over appropriate authorities to contact, lack of transparency by government, and poorly communicated legislation created obstacles to heritage reporting. This project represents the first attempt to quantify reporting behaviors of Indigenous artifacts and fossils in Australia and recommends improvements for reporting, protection, and communication of Australian heritage items and their historical narratives.
JCOM-JOURNAL OF SCIENCE COMMUNICATION
(2023)
Article
Paleontology
James B. Jago, Christopher J. Bentley
Summary: This paper describes the stratigraphically lowest known agnostoids and trilobites from the Dial Range Trough in northwest Tasmania and western Tasmania. The fossils found in the Dial Range Trough suggest a range between the Triplagnostus gibbus and Euagnostus opimus zones. The Sticht Range Beds in western Tasmania contain poorly preserved trilobite specimens with an undetermined age.
Article
Geosciences, Multidisciplinary
Bin Zhang, Jiaqi Liu, Wen Chen, Zhiliang Zhang, Li Yang, Lei Zhang, Zeyang Zhu, Chunqing Sun, Zhihao Sun
Summary: The eastern Tibetan Plateau is a region with unique topography and active tectonics, making it crucial for studying geodynamics and lithosphere-atmosphere interaction. By integrating new and reported thermochronological data, as well as paleo-crustal thickness reconstruction, this study sheds light on the tectonic deformation, climate-tectonic coupling, and geodynamics of the area.
Article
Geosciences, Multidisciplinary
Zhenhua Tian, Shangwen Zhou, Songtao Wu, Sai Xu, Junping Zhou, Jianchao Cai
Summary: This paper presents a modified method for calculating the lost gas content of shale by analyzing the coring and on-site desorption processes. The method accurately depicts the loss characteristics of free and adsorbed gas and identifies parameters that influence the calculation of in-situ shale gas content. The results demonstrate that the method shows satisfactory applicability in gas loss curve prediction and in-situ gas content estimation.
Article
Geosciences, Multidisciplinary
Pengcheng Li, Jaffar Abbas, Daniel Balsalobre-Lorente, Qingren Wang, Qianxiao Zhang, Syed Ale Raza Shah
Summary: This study explores the factors contributing to sustainability in Pakistan from 1974 to 2018 and finds that emissions from industrial and agriculture sectors have significantly decreased, while the financial sector has not effectively reduced environmental pressure. Therefore, Pakistan needs to adjust its economic policies and ensure the green allocation of financial resources.
Article
Geosciences, Multidisciplinary
Shi Zhou, Ting Zhou, Duo Guan, Yong Yao, Huimin Sun, Ahmed Ali Mosa, Yajie Zuo, Xianqiang Yin
Summary: Graphitic carbon nitride (g-C3N4) has been widely used due to its excellent optical properties and physicochemical stability. The risk of g-C3N4 transport in the environment has been overlooked, but this study investigated its transport behavior in various media. The results showed that flow rate and ionic strength influenced the transport, and the presence of lead (Pb) affected the outflow of g-C3N4. The unique structure of g-C3N4 particles allowed them to deposit in certain media and act as carriers for Pb release.
Article
Geosciences, Multidisciplinary
Xiaolong Qiao, Muntasir Murshed, Mohammad Mahtab Alam, Narasingha Das, Kurshid Khudoykulov, Salman Tariq
Summary: This study examines how macroeconomic factors influence India's carbon emission intensity levels and confirms the impact of factors such as foreign remittance receipts, energy consumption, urbanization, and technological progress. The findings provide policy recommendations for India's carbon emission reduction targets.
Article
Geosciences, Multidisciplinary
Wei Liu, Bo Wan
Summary: Magmatic-hydrothermal systems play a crucial role in transporting materials and potentially affecting Earth's long-term environment. This study investigates the duration of prograde metamorphism induced by fluid infiltration and the amount of carbon released by skarn ore deposits. The findings reveal that skarn ore deposits can efficiently decarbonize CO2 at a high rate, surpassing volcanism in different tectonic settings. The CO2 flux of skarn deposits increases over time and reaches a maximum value at the J/K boundary, providing an important previously unquantified source of outgassing in the subduction zone.
Article
Geosciences, Multidisciplinary
Haikuan Nie, Pei Li, Qing Chen, Zhijun Jin, Quanyou Liu, Wei Dang, Qian Chen, Jianghui Ding, Changbo Zhai
Summary: This study investigates the shale quality and shale gas potential in the upper Ordovician to lower Silurian formations in the Sichuan Basin of southern China. The distribution and characteristics of organic-rich shale are analyzed, aiding in the assessment of shale gas potential and identification of sweet spots.
Article
Geosciences, Multidisciplinary
Najia Saqib, Shujaat Abbas, Ilhan Ozturk, Muntasir Murshed, Malgorzata Tarczynska-Luniewska, Mohammad Mahtab Alam, Waldemar Tarczynski
Summary: This study examines the impact of economic growth, financial development, eco-friendly ICT, renewable energy, and human capital on lowering carbon footprint in the world's top polluting economies from 1993 to 2020. The findings suggest that eco-friendly ICT has the potential to effectively alleviate pollution, and financial development, renewable energy, and environmental technology are proposed as potential solutions for reducing carbon emissions.
Article
Geosciences, Multidisciplinary
Hikmat Salam, Syed Ali Turab, Asghar Ali, M. Qasim Jan, Norasiah Sulaiman, Mohd Basril Iswadi Basori
Summary: The Kahi melange complex in NW Pakistan is an important record of the tectonic evolution between the Indian plate and the Afghan block, consisting of highly dismembered ophiolitic and sedimentary units.
Article
Geosciences, Multidisciplinary
Er-Kun Xue, Wei Wang, David Chew, Manoj K. Pandit, Xin Deng, Yang Tian, Xi-Run Tong, Jun-Hong Zhao
Summary: The study reveals the presence of water-fluxed melting during the Wuyi-Yunkai Orogeny in South China. These water-fluxed melting quartzo-feldspathic migmatites formed during the early Paleozoic and were melted through reactions involving water-saturated quartz, feldspar, biotite, and K-feldspar. The findings highlight the significance of water-fluxed anatexis in the differentiation of the continental crust during orogenesis.
Article
Geosciences, Multidisciplinary
Hadi Shafaii Moghadam, Qiu-Li Li, William L. Griffin, Xian-Hua Li, Orhan Karsli, Christopher J. Spencer, Jose F. Santos, Maria Kirchenbaur, Sobhi Nasir, Suzanne Y. O'Reilly
Summary: Understanding the crustal growth, reworking, and geodynamics of the northern continental margin of Gondwana during the Ediacaran to Silurian times is crucial for the paleogeographic reconstruction of Gondwana. This study uses various analytical methods to evaluate the magmatic history of this region and obtain relevant detrital zircon data. The results provide valuable insights into the crustal evolution and tectonic activities in the northern Gondwana region.
Article
Geosciences, Multidisciplinary
Laura Petrescu, Felix Borleanu, Emanuel Kaestle, Randell Stephenson, Anica Placinta, Oleksandr Ivanovich Liashchuk
Summary: This study investigates the seismic structure of the Eastern European lithosphere and the transition from Precambrian to Phanerozoic Europe. The results show that the crust thickens across the Trans European Suture Zone boundary and the mantle is seismically faster beneath younger terranes. The Precambrian building blocks exhibit contrasting seismic fabrics, with the Baltic orogens characterized by uniform crust and the Sarmatia region showing alternating high and low velocity layers.
Article
Geosciences, Multidisciplinary
Dongya Zou, Hongfu Zhang
Summary: This study analyzes the U-Pb-Hf-O isotopes of zircons in felsic granulite xenoliths from the Fuxin late Cretaceous basalts in the North China Craton to evaluate the role of magma underplating in modifying the Archean lower crust. The results show that long-lived magma underplating occurred beneath the Fuxin region during the Mesozoic, with underplated magmas originating from the lithospheric mantle and later from the depleted asthenospheric mantle. This study concludes that magma underplating not only provided heat for remelting, but also added exotic material and weakened the lower crust, leading to its destruction.
Article
Geosciences, Multidisciplinary
Yu Han, Yingchang Cao, Chao Liang, Keyu Liu, Fang Hao
Summary: A paleoclimate reconstruction based on high-resolution records from lacustrine shale in the Bohai Bay Basin reveals a shift in orbital variability and a humidification event at -41.9 Ma in East Asia. The intensification of the East Asian monsoons at this time was likely a response to the elevated atmospheric pCO2 during the concurrent global warming.
Article
Geosciences, Multidisciplinary
Francesca Innocenzi, Sara Ronca, Stephen Foley, Samuele Agostini, Michele Lustrino
Summary: This study investigates two volcanic provinces in the western branch of the East African Rift and finds that the volcanic products show wide variability in chemical and mineralogical characteristics. Petrographic and geochemical analysis reveals enriched and heterogeneous sub-lithospheric mantle sources. The differences in isotopic features between the two volcanic provinces may indicate changes in the composition, mineralogy, and depth of melting in the lithospheric mantle source.
