Chemical Geology
Papers 10550
1 page of 1,055 pages (10.6k results)
Published on Dec 1, 2019in Chemical Geology3.62
Honghua He8
Estimated H-index: 8
(CAS: Chinese Academy of Sciences),
Chenbin Fan (College of Natural Resources)+ 3 AuthorsGao-Lin Wu14
Estimated H-index: 14
(CAS: Chinese Academy of Sciences)
Abstract Coal fly ash (CFA) is often used as a soil amendment to improve the physicochemical properties of the soil. However, CFA contains abundant rare earth elements (REEs), which may negatively affect plant growth and physiology and cause environmental hazards. We performed pot experiments to grow alfalfa (Medicago sativa L.) and erect milkvetch (Astragalus adsurgens Pall.) in soils treated with different rates of CFA, in order to investigate the impacts of CFA on the accumulation and translo...
Published on 2019in Chemical Geology3.62
Tobias Hens1
Estimated H-index: 1
(Monash University, Clayton campus),
Joël Brugger36
Estimated H-index: 36
(Monash University, Clayton campus)
+ 4 AuthorsAndrew J. Frierdich14
Estimated H-index: 14
(Monash University, Clayton campus)
Abstract Deep-sea ferromanganese (Fe Mn) nodules and crusts are rich in traditional and non-traditional metals with both current and emerging economic value. Mn(III,IV) oxides (e.g., phyllomanganates) are important host phases for these metals (e.g., Ni), which are structurally incorporated during nodule and Fe Mn crust formation. Recrystallization of phyllomanganates can be catalyzed by aqueous Mn(II) (Mn(II)aq) during (bio)geochemical Mn redox cycling. The fate of structurally incorporated met...
Published on Aug 1, 2019in Chemical Geology3.62
Anais Pagès6
Estimated H-index: 6
(CSIRO: Commonwealth Scientific and Industrial Research Organisation),
Steve J. Barnes8
Estimated H-index: 8
(CSIRO: Commonwealth Scientific and Industrial Research Organisation)
+ 7 AuthorsHanjie Wen15
Estimated H-index: 15
(CAS: Chinese Academy of Sciences)
Abstract Early Cambrian black shales of the Niutitang Formation are found across the Yangtze Platform in a 1600-km belt extending across south China. A thin organic matter-rich layer in the lowermost part of this formation contains exceptional concentrations in Mo, Ni, Se, Re, Os, As, Hg, Sb, Ag, Au, Pt, Pd, and Ag. Due to their extreme metal enrichment, these black shales provide a rare opportunity to study the interface between semi-metals, metals and biogenic material. We report the first det...
Published on 2019in Chemical Geology3.62
Weiguo Liu32
Estimated H-index: 32
(CAS: Chinese Academy of Sciences),
Huanye Wang15
Estimated H-index: 15
(CAS: Chinese Academy of Sciences)
+ 5 AuthorsHong Yang12
Estimated H-index: 12
(Technology College)
Abstract The hydrogen isotopic compositions (δD) of long-chain plant leaf waxes can reflect changes of continental hydrology and thus have been increasingly utilized for paleoclimate reconstruction. One of the unresolved major issues is whether variations of leaf wax δD (δDwax) signals along a precipitation gradient reflect changes of precipitation δD, precipitation amount, and/or evapo-transpiration. This ambiguity limits our interpretation of δDwax in geological records as well as the quantita...
Published on Dec 1, 2019in Chemical Geology3.62
Laurence A. Coogan28
Estimated H-index: 28
(UVic: University of Victoria),
William E. Seyfried41
Estimated H-index: 41
(UMN: University of Minnesota),
Nicholas J. Pester9
Estimated H-index: 9
(University of California, Berkeley)
Abstract High temperature hydrothermal fluxes at mid-ocean ridges are thought to be an important component of oceanic biogeochemical cycles. However, little consideration has been given to how these fluxes vary as a consequence of changing environmental conditions over Earth history. Here we consider how changes in sea level and ocean chemistry are likely to have impacted on-axis, high-temperature, hydrothermal fluxes focusing on Phanerozoic conditions. Changes in sea level lead to changes in hy...
Published on 2019in Chemical Geology3.62
Matthew S. Fantle19
Estimated H-index: 19
(PSU: Pennsylvania State University),
Elizabeth M. Griffith11
Estimated H-index: 11
(OSU: Ohio State University)
Published on 2019in Chemical Geology3.62
Stephan Schuth17
Estimated H-index: 17
Annika Brüske3
Estimated H-index: 3
+ 5 AuthorsStefan Weyer33
Estimated H-index: 33
Abstract Investigation of redox variations in recent and paleo-oceans has been of particular scientific interest to elucidate the rise and variations of the atmospheric oxygen level by analyses of isotopic signatures of redox-sensitive elements like Fe, Mo, and U. Vanadium is another redox-sensitive metal that has become the target of stable isotope research during the last decade. During the last decade, research of the oceanic V cycle revealed a rather complex interplay of riverine V as a majo...
Published on Dec 1, 2019in Chemical Geology3.62
Wenjing Wang1
Estimated H-index: 1
(China University of Geosciences),
Marie-Camille Caumon9
Estimated H-index: 9
(University of Lorraine)
+ 3 AuthorsYahao Huang (Yangtze University)
Abstract Density of fluid inclusions is one of the most important parameters to reconstruct the P-T conditions of entrapment of geo-fluids. Co-existing with microthermometry methods, Raman spectroscopy also became a useful tool to determine the density of CO2-bearing inclusions via Fermi diad splitting (Δ). In this study, a new CO2 densimeter which takes into account the effects of temperature, pressure and H2O (±NaCl) on Fermi diad splitting was built from experiments using a High Pressure Opti...
Published on Sep 1, 2019in Chemical Geology3.62
Biying Chen1
Estimated H-index: 1
Finlay M. Stuart39
Estimated H-index: 39
+ 2 AuthorsCong-Qiang Liu1
Estimated H-index: 1
(TJU: Tianjin University)
Abstract The late Carboniferous-early Permian coal seams of the Qinshui Basin in Shanxi Province are the most prolific producer of coalbed methane (CBM) in China. Methane formed in the late Triassic during deep burial and reheating in late Jurassic-early Cretaceous driven by magmatic underplating. Basin inversion brought the coal seams to 400–700 m from the surface in the mid-late Cenozoic. Here we present results of a study aimed at understanding the origin of the methane, and how it was affect...
Published on 2019in Chemical Geology3.62
John B. Creech9
Estimated H-index: 9
(Macquarie University),
Frédéric Moynier37
Estimated H-index: 37
(IPGP: Institut de Physique du Globe de Paris),
Christian Koeberl50
Estimated H-index: 50
(University of Vienna)
Abstract Tektites are glasses derived from near-surface continental crustal rocks that were molten and ejected from the Earth's surface during hypervelocity meteorite impacts. They are among the driest terrestrial samples, although the exact mechanism of water loss and the behaviour of other volatile species during these processes are debated. Based on the difference in magnitude of the Cu and Zn isotopic fractionations in tektites, and the difference of diffusivity between these elements, it wa...