Article
Geochemistry & Geophysics
Caroline R. Soderman, Oliver Shorttle, Simon Matthews, Helen M. Williams
Summary: The geochemistry of global mantle melts shows lithological and temperature heterogeneities from both upper and lower mantle. Non-traditional stable isotopes are suggested as new tools for understanding mantle heterogeneity. Some stable isotope systems can be used as tracers of mantle temperature and lithological heterogeneity, but are not predicted to be sensitive to mantle potential temperature variations with current analytical precision.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geology
Li-Ming Yu, Ming-Xin Liu, Yong Dan, Nuru Said, Jiang-Han Wu, Ming-Cai Hou, Hao Zou
Summary: The Ediacaran-early Cambrian period in South China witnessed the occurrence of the important phosphogenesis event, particularly in the late Ediacaran Doushantuo Formation. Despite occupying only 5% of global reserves, the Doushantuo Formation accounts for 45% of the world's phosphorus production. Therefore, studying the phosphorite formation in the Doushantuo Formation will enhance our understanding of the role of phosphorus during that period.
ORE GEOLOGY REVIEWS
(2023)
Article
Geochemistry & Geophysics
Sarah M. Aarons, Aleisha C. Johnson, Shelby T. Rader
Summary: The formation of continental crust through plate tectonics greatly influences Earth's surface characteristics, with nontraditional stable isotopes providing valuable insights into the process. These isotopes have shed light on Earth's earliest continental crust and the mechanisms behind modern crustal generation.
Review
Geochemistry & Geophysics
Bernd Lehmann, Jan Pasava, Ondrej Sebek, Alexandre Andronikov, Robert Frei, Lingang Xu, Jingwen Mao
Summary: Early Cambrian black shales on the Yangtze Platform host a regionally distributed highly metalliferous sulfide-rich carbonaceous unit, and the extreme metal enrichment can be understood as due to a process chain.
MINERALIUM DEPOSITA
(2022)
Article
Geology
Licheng Wang, Lijian Shen, Chenglin Liu, Nuchit Siritongkham
Summary: The study analyzes the potash minerals on the Khorat Plateau and identifies carnallite and sylvite as the main components. The origin of sylvite is still uncertain, but the research suggests that it is formed through the dissolution of carnallite, primarily occurring on the flanks of salt domes.
SEDIMENTARY GEOLOGY
(2023)
Article
Geochemistry & Geophysics
James F. Busch, Eben B. Hodgin, Anne-Sofie C. Ahm, Jon M. Husson, Francis A. Macdonald, Kristin D. Bergmann, John A. Higgins, Justin V. Strauss
Summary: Studying various localities, it was found that Shuram CIE successions share general similarities but differences in water depths may be linked to changes in carbonate diagenesis. The magnitude and duration of the transgression associated with the Shuram CIE are consistent with eustatic fluctuations driven by plate reorganization.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Erik J. Oerter, Michael Singleton, Eric Pili, Michael R. Klosterman, Aldo Shemesh, Pierre Agrinier, Amanda Deinhart, Ruth Yam, Maor Assulin, Eyal Elish, Luther McDonald Iv, Travis Tenner, Ruth Kips
Summary: This paper summarizes the results from four laboratories using different methods of oxygen stable isotope analysis on CRM 125-A UO2 Standard Reference Material. The consensus oxygen stable isotope composition for CRM 125-A is determined to be 818O = -9.63‰ (± 0.29‰) VSMOW. The paper discusses methodological differences, calibration strategies, and the potential effects of calibration scale compression. The use of liquid water calibration standards sealed in silver capillary tubes for multi-point calibrations of fluorination analysis systems is suggested.
APPLIED GEOCHEMISTRY
(2022)
Article
Geochemistry & Geophysics
Tara N. Jonell, Liviu Giosan, Peter D. Clift, Andrew Carter, Lisa Bretschneider, Ed C. Hathorne, Marta Barbarano, Eduardo Garzanti, Giovanni Vezzoli, Thet Naing
Summary: This study presents the first comprehensive analysis of the Holocene Irrawaddy megadelta, providing insights into the late Neogene evolution of the Irrawaddy River. The results show that the river's evolution is more in line with regional evidence for kinematic reorganization during late-stage India-Asia collision. The study also highlights the importance of late Miocene basin inversion and uplift along the Sagaing Fault in shaping the modern geometry and provenance of the Irrawaddy River.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Bo Chen, Chunlin Hu, Benjamin J. W. Mills, Tianchen He, Morten B. Andersen, Xi Chen, Pengju Liu, Miao Lu, Robert J. Newton, Simon W. Poulton, Graham A. Shields, Maoyan Zhu
Summary: The Ediacaran Period was characterized by major carbon isotope perturbations, including anomalies similar to the Shuram/DOUNCE anomaly at 570 Ma and the WANCE anomaly at 610 Ma. These anomalies were associated with expansions in oxygenated seawater and environmental perturbations. New uranium isotope data, as well as strontium and sulfur isotope data, provide evidence of environmental changes during these anomalies.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Multidisciplinary Sciences
Ruimin Wang, Bing Shen, Xianguo Lang, Bin Wen, Ross N. Mitchell, Haoran Ma, Zongjun Yin, Yongbo Peng, Yonggang Liu, Chuanming Zhou
Summary: A Great Ediacaran Glaciation, lasting for 20 million years, occurred globally from mid-to-high latitudes, witnessing the evolution of the Ediacara biota. The timing of Ediacaran glaciation remains controversial due to limited age constraints and a lack of convincing evidence for low-latitude glaciations. However, recent studies using carbon isotope excursions and paleomagnetic evidence suggest that the Ediacaran glaciation occurred diachronously but continuously from ca. 580-560 Ma as different continents migrated through polar-temperate latitudes.
NATIONAL SCIENCE REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Paul Bridger, Simon W. Poulton, Ying Zhou, Chao Li, Kun Zhang, Graham A. Shields
Summary: This study reveals fluctuating redox conditions in the lagoonal area of the Yangtze platform during the late Ediacaran period, suggesting that low-oxygen environments may have restricted the distribution of aerobic fauna.
GEOLOGICAL MAGAZINE
(2022)
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
Geosciences, Multidisciplinary
Syed Asim Hussain, Feng Qing Han, Zhe Ma, Amjad Hussain, Muhammad Saleem Mughal, Jibin Han, Abdullah Alhassan, David Widory
Summary: The research on the Eocene halite deposits in the Kohat Basin reveals the origin and evolution of these deposits, shedding light on the paleoclimate in Asia during the Eocene period. The halite samples showed a mixture of different solutions and the involvement of recrystallization in their formation, pointing to unstable paleoclimatic conditions that led to the transition from an evaporite basin to a terrestrial foreland basin. These events were controlled by regional tectonic activities and linked to the uplift of the NW Indian Craton and the Eocene thermal maximum.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
J. Arribas, G. Garzon, R. Tejero, M. Tsige
Summary: The Rana unit is a relict alluvial fan unit located on the northern border of the Guadiana Basin, with sediment provenance from intensely weathered products, indicating the influence of chemical weathering on sediment source and maturity.
Article
Geochemistry & Geophysics
C. T. G. Yule, C. Spandler
Summary: The formation of buried mafic magmatic provinces is an important geological event that can have significant impacts on mass extinctions, continental rifting, basin evolution, petroleum prospectivity, and mineralization. This study focuses on the Northwest Shelf of Australia and uses an integrated geophysical and geochemical approach to describe the distribution and composition of mafic igneous rocks in the region. The results show interconnectivity of these rocks and their potential as a large igneous province. The newly defined Northwest Shelf MMP may have played a role in the Permian rifting and could have potential for CO2 sequestration and storage.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
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.