Article
Geosciences, Multidisciplinary
Zhiheng Du, Jiao Yang, Lei Wang, Ninglian Wang, Anders Svensson, Zhen Zhang, Xiangyu Ma, Yaping Liu, Shimeng Wang, Jianzhong Xu, Cunde Xiao
Summary: The radiogenic isotope compositions of strontium and neodymium on the Earth's surface can help trace dust sources and sinks. A database of Sr-Nd isotopic compositions from extremely cold or arid terrestrial environments was compiled to study the spatial variabilities in eolian dust sources in key cryospheric regions. This dataset provides detailed information on the sources and transport pathways of dust in snow, ice, rivers, and oceans at or near the three poles.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Geography, Physical
Chao Wu, Zhigang Wang, Qi Wang, Peng Qian, Xiangmin Zheng, Gangjian Wei
Summary: Knowledge of sedimentary provenance and age is important to understand windblown dust activity in source regions. In this study, the sedimentary provenance and age of the Shengshan Island loess on the continental shelf of the East China Sea were determined using geochemistry, micropaleontology, and dating methods. The results show that the Shengshan Island loess originated from the Yangtze River sediments, nearby granites, and dust from the Asian interior. The local dust emissions were directly influenced by low sea levels and an arid environment during the Last Glaciation.
Article
Geosciences, Multidisciplinary
A. Molinero-Garcia, J. M. Martin-Garcia, M. Fernandez-Gonzalez, R. Delgado
Summary: The study reveals an increase in dust concentration in the atmosphere of southern Spain, with different origins and characteristics. The morphoscopy of quartz grains can serve as a fingerprint for the provenance of dust, while the characteristics and origins of dust can be determined using methodological techniques.
Article
Geography, Physical
Yunus Baykal, Thomas Stevens, Alexandra Engstroem-Johansson, Jacek Skurzynski, Hanzhi Zhang, Jing He, Huayu Lu, Grzegorz Adamiec, Chiara Koltringer, Zdzislaw Jary
Summary: Loess deposits in Europe are complex, with sources including glaciofluvial outwash plains near the Fennoscandian Ice Sheet and local mountainous areas. Detrital zircon analysis of loess samples reveals a mixture of sources, indicating long-term glacial and fluvial reworking. Additionally, loess deposition is mainly influenced by river distribution and aeolian transport.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geography, Physical
Chao Wu, Xiangmin Zheng, Peng Qian, Pan Qu, Miaohong He, Gangjian Wei
Summary: In this study, the sources of the Oldest Xiashu loess and Xuancheng loess in southern China were identified using elemental geochemistry and detrital zircon U-Pb ages. The Oldest Xiashu loess mainly originates from Yangtze River sediments, with some fine-grained dust component from arid regions. The Xuancheng loess is mainly the product of local dust activity in the Xuancheng region. These findings suggest that the Xiashu and Xuancheng loess are the result of independent dust transport processes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Francesca Pasquetti, Giovanni Zanchetta, Monica Bini, Jacopo Paffi, Mauro Coltorti, Marco Lezzerini, Ilenia Arienzo, Mauro Cremaschi
Summary: By analyzing geochemical, mineralogical, and grain-size data from the loess profile in Ponte Crispiero, Central Italy, it has been found that the nearby Po River basin is the major source of the dust particles, supporting the authenticity of the Great Po Plain hypothesis.
Article
Geosciences, Multidisciplinary
Stephan Potter, Daniel Veres, Yunus Baykal, Janina J. Nett, Philipp Schulte, Ulrich Hambach, Frank Lehmkuhl
Summary: The study concludes that the Danube alluvium, Carpathian Bending, Eastern Carpathian, glaciofluvial, and Black Sea pathways are the main potential sources of loess sediments in the Lower Danube Basin. The geochemical data suggest that the Danube alluvium pathway is the major trajectory for loess in the region, with contributions from the Carpathian Bending pathway in the northeastern part, and possible minor influences from the Black Sea pathway.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Engineering, Environmental
Ting Wei, Janice Brahney, Zhiwen Dong, Shichang Kang, Chunlei Zong, Junming Guo, Ling Yang, Xiang Qin
Summary: The isotopic compositions of Hf-Nd-Sr in TP soils show unique spatial signatures controlled by four geographic isotope regions. TP is an important dust source to eastern TP glaciers, the Chinese Loess Plateau, South China Sea, Japan, and Greenland. This study provides clear isotopic evidence that TP is a major aeolian contributor in the Northern Hemisphere with important implications for the global aeolian cycle.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Sen Lian, Lei He, Congcong Li, Junfeng Ren, Lei Bi, Meina Chen, Zijing Lin
Summary: The perovskite/Ruddlesden-Popper oxide heterostructure (Nd,Sr)CoO3 (NSC113)/(Nd,Sr)2CoO4 (NSC214) has been found to significantly enhance the oxygen reduction reaction (ORR) activity due to two main factors: enhanced oxygen adsorption and accelerated transport of interstitial oxygen. Additionally, the perovskite/double-layered R-P oxide heterostructure is predicted to exhibit better ORR performance compared to the perovskite/single-layered R-P oxide heterostructure. This work provides important insights into the atomic-level mechanism of ORR enhancement on perovskite/R-P oxide heterostructures, which is highly significant for the development of high-performance electrochemical devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Geography, Physical
Chao Wu, Xiangmin Zheng, Limin Zhou, Shaofang Ren, Peng Qian
Summary: Enhancing the current knowledge of loess deposits' provenance can elucidate complex depositional processes and offer new insights into the paleo-dust storm history in dust source areas. This study reveals that the fine-grained components of Xiashu loess were mainly derived from the arid region of the Asian interior, while the >10 μm components primarily originated from the local floodplains in the downstream of the Yangtze River. The study also proposes a new method to quantitatively estimate the sources of Xiashu loess, showing that a large percentage of the components were from nearby-source transport processes.
Article
Geology
Guangyan Zhou, Long Li, Guoqiao Xiao, Luo Yan, D. Graham Pearson, Qingzhen Hao, Yuanbao Wu
Summary: This study presents a new approach to determine the provenance of eolian sediments from the Chinese Loess Plateau. By using a multi-proxy (zircon, monazite, and rutile) U/Th-Pb geochronology approach, the researchers found spatial variability in sediment provenance and its potential relationship with westerly/northwesterly winds. These findings have important implications for the study of the provenance of eolian deposits worldwide.
Article
Construction & Building Technology
Anera Kazlagic, Stephan Dietmar, Markus Ostermann, Antonio Possolo, Jochen Vogl
Summary: This study uses isotopic and interelement ratios of Sr-87/Sr-86 and Nd-143/Nd-144, combined with Ca, Sr, K, Mn, Mg, and Ti, to identify the origin of ordinary Portland cements (OPCs). A database of Sr and Nd isotope ratios in OPCs from 29 cement plants worldwide was created. The results show that OPCs have higher Sr isotope ratios compared to seawater from the observed geological period. The combination of Sr and Nd isotope ratios can distinguish between cements from different production sites, and divisive hierarchical clustering was used to overcome equivocal results. The successful fingerprinting of 27 out of 29 OPCs analyzed was achieved through this method.
ADVANCES IN CEMENT RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Gabriela Torre, Diego Gaiero, Renata Coppo, Nicolas J. Cosentino, Steven L. Goldstein, Francois De Vleeschouwer, Gael Le Roux, Louise Bolge, Yael Kiro, Andre Oliveira Sawakuchi
Summary: The study investigates the provenance of dust in the Pampean loess in central Argentina, providing insight into the paleo-atmospheric circulation in the Southern Hemisphere. The isotopic analysis reveals that the dust mainly originates from the southern Altiplano and southern Puna, and there is a similarity between the paleo-dust and modern dust sources. The study also suggests that changes in atmospheric transport efficiency may better explain dust flux variations in the loess over glacial/interglacial periods.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Mohamed Ghnahalla, Olabode M. Bankole, Ahmed Abd Elmola, Marc Poujol, Claude Fontaine, Mohamed Salem Sabar, Alain Trentesaux, Chenyi Tu, Timothy W. Lyons, Abderrazak El Albani
Summary: This study examines the provenance and sources of sedimentary rocks from the Mesoproterozoic Atar and El Mreiti groups in the Taoudeni Basin, Mauritania. The results suggest that the Atar sediments mainly originate from Archean rocks, while the El Mreiti sediments are derived from Paleoproterozoic rocks. This study highlights the importance of sediment provenance in understanding the evolution and reconstruction of modern and ancient sedimentary systems.
PRECAMBRIAN RESEARCH
(2023)
Article
Chemistry, Analytical
Sourav Das, Brent Miller, Joseph Prospero, Shankararaman Chellam
Summary: This article presents a new chemical separation protocol for isotopic analysis of low mass aliquots of airborne particulate matter. The protocol achieves successful separation and accurate quantification of several reference materials and real-world samples. The method is optimized to isolate individual anthropogenic and natural aerosol sources in complex atmospheric environments. In addition, the method is used to measure isotopic ratios and elemental abundances in different urban PM sources, demonstrating the superiority of isotopic markers over elemental tracers.
Article
Geography, Physical
Ann-Kathrin Schatz, Thomas Scholten, Peter Kuehn
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2015)
Article
Geochemistry & Geophysics
Eva Enkelmann, Todd A. Ehlers, Gerald Buck, Ann-Kathrin Schatz
Article
Geography, Physical
Ann-Kathrin Schatz, Jan-Pieter Buylaert, Andrew Murray, Thomas Stevens, Thomas Scholten
QUATERNARY GEOCHRONOLOGY
(2012)
Article
Geography, Physical
Ann-Kathrin Schatz, Michael Zech, Bjoern Buggle, Sandor Gulyas, Ulrich Hambach, Slobodan B. Markovic, Pal Suemegi, Thomas Scholten
QUATERNARY INTERNATIONAL
(2011)