Article
Geochemistry & Geophysics
Yuying Huyan, Bimin Zhang, Xueqiu Wang, Yuexin Lu, Futian Liu
Summary: This study focuses on the geochemical characteristics of overbank sediments from the Lancang River and their implications for climate, material cycling, and sediment maturity. The results suggest that the sediment maturity of the Lancang River is influenced by volcanic eruptions and gravity, and climate has a significant impact on weathering processes. The findings highlight the potential of overbank sediments in large rivers as a sampling medium for evaluating terrestrial weathering, provenance, and sediment characteristics using geochemical evidence.
APPLIED GEOCHEMISTRY
(2023)
Article
Geosciences, Multidisciplinary
Ayon Saha, Dhiman Kumer Roy, Rahat Khan, Tahsin Islam Ornee, Sukhen Goswami, Abubakr M. Idris, Pradip Kumar Biswas, Umma Tamim
Summary: The geochemical compositions, provenance, climate, weathering intensity, and tectonic setting of sediments from the Padma River in Bangladesh have been studied. The results suggest that the sediments are chemically immature arkose that originated from the Higher Himalaya under semi-arid to semi-humid climatic conditions. The sediments have a felsic source origin and were deposited in a passive continental margin.
Article
Geochemistry & Geophysics
Yulong Guo, Shouye Yang, Kai Deng
Summary: This passage discusses the use of river sediment to study silicate weathering intensity, highlighting challenges such as understanding the preservation and propagation of weathering signals and effects of hydrodynamic sorting and lithology. It explores the relationship between the chemical composition of river sediments and factors influencing silicate weathering, highlighting the importance of studying geochemical evolution for better reconstructing Earth's surface processes.
Article
Geochemistry & Geophysics
Germain Bayon, Nicolas Freslon, Yoan Germain, Ilya N. Bindeman, Anne Trinquier, Jean-Alix Barrat
Summary: Radiogenic strontium isotopes are commonly used in provenance studies, with their application to sediments being influenced by grain size and weathering effects. The study found that the detrital material transported by world rivers defines general inverse Nd-Sr isotope relationships, and that the weathering dependence of Sr isotopes in river sediments appears to be mainly controlled by temperature.
Article
Chemistry, Multidisciplinary
Douaa Fathy, Michael Wagreich, Theodoros Ntaflos, Mabrouk Sami
Summary: Campanian lacustrine organic-rich mudstones in Egypt were deposited under a warm greenhouse climate. Geochemical analyses suggest they originated from intermediate igneous parent rocks, underwent moderate to intense chemical weathering, and were sourced from a moderate energy depositional environment.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Geochemistry & Geophysics
Satyabrata Das, Gyana Ranjan Tripathy, Santosh K. Rai, Mohd Danish, Divya Thakur, Som Dutt, Shushanta Sarangi
Summary: The study revealed that both sulfuric and carbonic acid play crucial roles in the chemical weathering processes in the Teesta River in the Himalayan river basins. The contributions of sulfate and carbonate-mediated weathering to the major cations are comparable in this basin.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Tianliang Zheng, He Lin, Yang Deng, Yanhua Xie, Jianfei Yuan, Xingguo Du, Xiangjun Pei
Summary: This study investigated the enrichment and mobility of arsenic (As) and boron (B) in river sediments from the Tibetan Plateau. The weathering of Cs-bearing silicate minerals was found to be a potential source of As, while carbonate weathering contributed to B enrichment. Incubation experiments showed that both As and B can be mobilized under varying environmental conditions, with increases in HCO3- concentration and temperature enhancing their mobilization. The study provides new insights into the hydrogeochemical control on the enrichment and mobility of As and B in river sediments and has implications for similar riverine systems.
APPLIED GEOCHEMISTRY
(2023)
Article
Ecology
Guangxi Chi, Baolin Liu, Ke Hu, Juan Yang, Bicheng He
Summary: The study analyzed the sediment characteristics of the Liao River Estuary in Northeast China to determine their provenance, degree of chemical weathering, and climate conditions. Results indicated that the sediments originated from the eastern part of Inner Mongolia Autonomous Region and were influenced by a continental island arc environment.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Wenfang Zhang, Jinglu Wu, Shuie Zhan
Summary: This study investigates the elemental compositions of surficial sediments across Tajikistan. The results show that topsoil and fluvial sediments have spatially homogeneous compositions, while sediments in the western region display slightly higher chemical weathering intensity. Lake sediments have complex compositions due to the influence of terrigenous detritus. Higher Cd concentrations in the sediments of western Tajikistan are likely caused by anthropogenic input from industrial development.
APPLIED GEOCHEMISTRY
(2022)
Article
Energy & Fuels
Shubiao Pan, Yuhong Liao, Bin Jiang, Zhixiong Wan, Fu Wang
Summary: This study investigated the organic and inorganic changes in source rocks during natural weathering, revealing significant impacts on source rock characteristics. Both organic and inorganic compositions were altered, leading to biases in petroleum geochemical interpretation. Commonly used paleoenvironmental geochemical proxies were affected by weathering to varying degrees as well.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Teresa D. Avila, Matthew R. Saltzman, Y. Datu Adiatma, Michael M. Joachimski, Elizabeth M. Griffith, John W. Olesik
Summary: This study suggests that increased hydrothermal weathering played a role in driving marine Sr-87/Sr-86 during the Ordovician period, accompanied by climate cooling.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Xia Zhang, Xu-long Li, Eduardo Garzanti, Chun-ming Lin, Kai Deng
Summary: This study investigates the variation of weathering intensity and its controlling factors in the Holocene Qiantang River incised-valley fill. Results suggest that climate is the main factor controlling the variations of chemical weathering indices over the past 12,000 years, with some influence from human activities and/or El-Nino activities. Additionally, small catchments near land-ocean boundaries respond more rapidly to climate change and human activities on millennial (or even centennial) timescales.
Article
Engineering, Environmental
Xiaoling Xu, Nanyan Weng, Hanxiao Zhang, Sebastiaan J. van de Velde, Martijn Hermans, Fengchang Wu, Shouliang Huo
Summary: Previous studies have shown that e-SOx can regulate the release of phosphorus (P) in brackish and marine sediments. Cable bacteria have also been found in freshwater sediments, and they may play a role in the regulation of P availability in eutrophied freshwater streams. The activity of cable bacteria can lead to the dissolution of metal oxide layers and the release of Fe2+ and Mn2+. Overall, cable bacteria may have a significant impact on countering eutrophication in freshwater systems.
Article
Geosciences, Multidisciplinary
Khalid M. Ghasera, Shaik A. Rashid
Summary: This study compares weathering profiles developed on granite and basalt rocks under different climatic conditions in India. The results show the significance of climate conditions and lithology in controlling weathering advancement. The distribution of major oxides and trace elements is influenced by weathering intensity and formation of secondary minerals. The principal component analysis reveals three components that account for a significant portion of the variance, related to weathering intensity, lithology, and location-specific factors.
Article
Geosciences, Multidisciplinary
Christopher M. Fedo, Michael G. Babechuk
Summary: The creation of the chemical index of alteration (CIA) 40 years ago was a major advancement in quantitatively determining chemical weathering in sedimentary rocks. However, the CIA should be used cautiously as it homogenizes multiple compositional inputs. Two-dimensional ternary diagrams have been developed to explore mineralogical-geochemical pathways, but they can be complicated to interpret. A newly developed three-dimensional tetrahedral diagram allows for the assessment of both felsic and mafic rocks and minerals, while also monitoring post-depositional potassium changes.
CANADIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Chunting Xue, Yachao Qin, Siyuan Ye, Edward A. Laws, Zhongbo Wang
EARTH-SCIENCE REVIEWS
(2018)
Article
Geology
Yang Xu, Ming-Ling Yang, Ali Polat, Kun-Guang Yang, Yuan-Ku Meng, Ri-Hui Li, Zhong-Bo Wang
INTERNATIONAL GEOLOGY REVIEW
(2019)
Article
Geosciences, Multidisciplinary
Jiahui Yao, Linxiang Xiao, Mengmeng Gou, Chao Li, Ergang Lian, Shouye Yang
SCIENCE CHINA-EARTH SCIENCES
(2018)
Article
Geography, Physical
Zhaoxia Jiang, Chunsheng Jin, Zhongbo Wang, Qingsong Liu, Sanzhong Li, Zhengquan Yao
GLOBAL AND PLANETARY CHANGE
(2020)
Article
Geochemistry & Geophysics
Xiangtong Huang, Jiaze Song, Wei Yue, Zhongbo Wang, Xi Mei, Yalong Li, Fangliang Li, Ergang Lian, Shouye Yang
Article
Geochemistry & Geophysics
Yuanku Meng, Zhongbo Wang, Baoping Gan, Jinqing Liu
Article
Environmental Sciences
Chao Li, Ergang Lian, Chengfan Yang, Kai Deng, Peng Qian, Shangbin Xiao, Zhongfang Liu, Shouye Yang
ENVIRONMENTAL SCIENCES EUROPE
(2020)
Article
Geography, Physical
Zhonglei Wang, Hongbo Zheng, Xi Mei, Xiangjun Meng, Tingting Xu, Zhongbo Wang, Beibei Mi, Xianhong Lan, Feifei Wang, Shuang Wang, Jun Sun, Luning Shang
Summary: This study investigated the environmental evolution and provenance of sediments in Northwestern Liaodong Bay since 1.2 million years ago. The research found evidence of three large-scale transgressions from the Late Middle Pleistocene to the Holocene, originating mainly from the Yellow River, Liaohe River, and Daliao River. The results suggest a different sedimentary history compared to previous understandings, providing valuable insights into the Late Quaternary deposits of the Bohai Sea.
QUATERNARY INTERNATIONAL
(2021)
Article
Geography, Physical
Zhiru Long, Zhongbo Wang, Hua Tu, Rihui Li, Zhenhe Wen, Yixuan Wang, Yong Zhang, Zhongping Lai
Summary: This study aims to clarify the chronology of Late Quaternary transgression layers in the western Bohai Sea, in order to address the discrepancy between the traditional chronological framework and the global sea-level change pattern. By using quartz optically stimulated luminescence (OSL) and radiocarbon dating, the study shows that the previous assignment of the transgression layer to MIS 3 was severely underestimated, and the actual age should be attributed to MIS 5.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Environmental Sciences
Zhongbo Wang, Shouye Yang, Haiyan Tang, Yilin Zheng, Hongyue Wang, Zhixun Zhang, Yong Zhang, Xi Mei, Qiang Wang, Zhongping Lai
Summary: This study examines the late Quaternary stratigraphic evolution and environmental changes on the outer shelf of the East China Sea. It identifies three marine regression/transgression cycles and confirms tide-influenced fluvial deposition during the Last Glacial Maximum. Tidal forcing is found to have a significant influence on sea level change and the late Quaternary stratigraphy of the open East China Sea shelf.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Zhonglei Wang, Hongbo Zheng, Xiangjun Meng, Xiaoqing Zhu, Fanghui Hou, Jie Li, Xi Mei, Zhongbo Wang, Binhua Cao, Jun Sun
Summary: This study reconstructs the evolution of the paleoenvironment in the northeast of Liaodong Bay by dating and analyzing the core sediments of the YKC-2 borehole. It finds that the sedimentation rate is influenced by provenance differences and differential movement of basin-controlling faults.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Penghui Lin, Yingjin Song, Weiqi Zhan, Ruonan Tian, Zhongbo Wang, Xiaolin Xu, Lan Luo, Mahmoud Abbas, Zhongping Lai
Summary: A reliable chronological framework of core P5-4 in the Pearl River Delta was established using optically stimulated luminescence (OSL) dating and radiocarbon (14C) dating. The ages ranged from about 8 to 0.5 thousand years ago, with two older OSL samples producing minimum ages of 75 and 62 thousand years. The 14C ages were generally older than the corresponding OSL ages and the difference increased with depth. The study also identified a three-stage sedimentary process in the late Holocene in the Pearl River Delta, which was influenced by sea-level rise, reduced sediment supply, strong tidal forces, and increased human activity.
Article
Geosciences, Multidisciplinary
Xi Mei, Ri-hui Li, Xun-hua Zhang, Zhong-bo Wang, Yong Zhang
Article
Geosciences, Multidisciplinary
Zhong-bo Wang, Ri-hui Li, Shou-ye Yang, Feng-long Bai, Xi Mei, Jian Zhang, Kai Lu
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
