Results in Geochemistry最新文献

{"title":"The potential for a continuous 10Be record measured on ice chips from a borehole","authors":"Long Nguyen ,&nbsp;Chiara I. Paleari ,&nbsp;Stefanie Müller ,&nbsp;Marcus Christl ,&nbsp;Florian Mekhaldi ,&nbsp;Philip Gautschi ,&nbsp;Robert Mulvaney ,&nbsp;Julius Rix ,&nbsp;Raimund Muscheler","doi":"10.1016/j.ringeo.2021.100012","DOIUrl":"10.1016/j.ringeo.2021.100012","url":null,"abstract":"<div><p>Ice cores are excellent archives for obtaining long and continuous ¹⁰Be records. However, traditional ice core ¹⁰Be measurements required a lot of ice (0.5–1kg) and often needed to be connected to a large and costly ice core project. These reasons have been the factors limiting the number and variety of ¹⁰Be projects and data. In this paper, we show measurements of ¹⁰Be on small samples (∼45g) of continuous auger ice chips from a borehole at Little Dome C (LDC), East Antarctica. The sample preparation method for ¹⁰Be accelerator mass spectrometry (AMS) was tested and optimized using test samples (∼50g) including well-mixed surface ice chips from the LDC site, snow collected in Lund (Sweden) and frozen Milli-Q water. The results show that our small ice samples should be processed without ion exchange filtration of the melt water and cleaning the subsequent Be(OH)₂ precipitate. In addition, co-precipitating Be with Fe led to more reproducible measurement currents and offer the potential for higher efficiency and precision via longer measurement time. We applied the established preparation method to measure ¹⁰Be on 76 samples of the auger ice chips. The resulting ¹⁰Be concentration record for the period from 1354 to 1950 CE agrees well with the ¹⁰Be concentration in a South Pole ice core and the global ¹⁴C production rate and thus reflects well the atmospheric production signal of ¹⁰Be. We also observed insignificant mixing among the ice chip samples during the process of drilling and retrieving the ice. Therefore, the new ice chip samples are promising for assessing the long-term changes in ¹⁰Be deposition at different ice core sites. A wide application of this novel ice chip samples will increase the variety of ¹⁰Be records which will help to improve the assessment of long-term solar and geomagnetic shielding of galactic cosmic rays.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"5 ","pages":"Article 100012"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666277921000058/pdfft?md5=975aa08b398335bd5af2465546f7481b&pid=1-s2.0-S2666277921000058-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75632067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiogenic (Sr-Nd-Hf-Os) isotope data for neogene volcanic rocks from the rif–betic orogen and lanzarote (Canary Islands) in the western Mediterranean","authors":"S. Turner ,&nbsp;B. Schaefer ,&nbsp;M. Pankhurst ,&nbsp;K. Waterman (née Cheeseman) ,&nbsp;G. Dobosi ,&nbsp;G. Jenner","doi":"10.1016/j.ringeo.2021.100013","DOIUrl":"10.1016/j.ringeo.2021.100013","url":null,"abstract":"<div><p>In this communication we present new radiogenic Sr-Nd-Hf-Os isotope data for Neogene volcanic rocks from the Rif-Betic Orogen and Lanzarote Island in the western Mediterranean along with some previously published data. Major and trace element data for the Rif samples are provided as a data supplement. Geological context and petrographic details for equivalent rocks have been published previously but the new data, especially the Hf and Os isotope data should be of use for future appraisals of the distribution of sub-crustal mantle domains in the region. Upon inspection, it would appear that alkali basalts, shoshonites and lamproites sample very different sub-continental lithospheric mantle sources in Spain and Morocco whereas there are close similarities between Lanzarote basalts and mantle xenoliths from the Atlas Mountains in Morocco.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"5 ","pages":"Article 100013"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266627792100006X/pdfft?md5=d02fdff0e74604dd473cc65ded42798e&pid=1-s2.0-S266627792100006X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83178956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leveraging detrital zircon geochemistry to study deep arc processes: REE-rich magmas mobilized by Jurassic rifting of the Sierra Nevada arc","authors":"Diane Clemens-Knott ,&nbsp;Kathleen DeGraaff Surpless ,&nbsp;Andrew P. Barth ,&nbsp;Joseph L. Wooden","doi":"10.1016/j.ringeo.2021.100010","DOIUrl":"10.1016/j.ringeo.2021.100010","url":null,"abstract":"<div><p>Anomalous trace element compositions of Middle to Late Jurassic detrital zircon separated from Sierra Nevada forearc and intra-arc strata reveal processes of differentiation occurring within the deep arc lithosphere. REE-Sc-Nb-Ti-Hf-U-Th covariations define three populations of atypically REE-rich grains that we interpret as crystallizing from (1) differentiates produced by olivine+clinopyroxene+plagioclase+garnet±ilmenite fractionation; (2) mixing between mafic arc magmas and partial melts of Proterozoic Mojave province crust; and (3) compositionally transient, low Gd/Yb magmas generated by hornblende resorption during decompression. We interpret a fourth population of Middle Jurassic to Early Cretaceous zircons having REE contents similar to “typical” arc zircon but with atypically high Gd/Yb ratios as having crystallized from partial melts of recycled arc crust and from deep-arc differentiates that evolved down-temperature through hornblende saturation. We hypothesize that latest Jurassic extension ripped open the arc, facilitating upward migration and eruption of geochemically anomalous zircon-bearing magmas. The anomalous compositions relative to “typical” arc zircon imply that these zircons and their host magmas rarely reach the upper arc crust, where eruption and/or erosion would release their zircon cargo to the clastic system. Focusing on the trace element compositions of zircons of syn-extensional age represents a productive new strategy for learning about deep magmatic reservoirs and early differentiation pathways within the thick lithosphere of continental margin arcs.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"4 ","pages":"Article 100010"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2021.100010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91343607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extreme sulfur isotope fractionation of hydrothermal auriferous pyrites from the SW fringe of the Taupo Volcanic Zone, New Zealand: Implications for epithermal gold exploration","authors":"Lu Wang ,&nbsp;Timothy Kusky ,&nbsp;Youjun Zhang ,&nbsp;David Lentz ,&nbsp;Yating Zhong ,&nbsp;Wenjie Ding ,&nbsp;Hao Deng ,&nbsp;Roy Giddens ,&nbsp;Songbai Peng","doi":"10.1016/j.ringeo.2021.100009","DOIUrl":"https://doi.org/10.1016/j.ringeo.2021.100009","url":null,"abstract":"<div><p>The Taupo Volcanic Zone and its environs, New Zealand, represent an ideal place for epithermal gold exploration. We have documented structurally-bound gold in low temperature hydrothermal pyrite veins from the Erua Basin area on the outside fringe of the Taupo Volcanic Zone. Extreme ³⁴S/³²S fractionation of 122.2‰ from auriferous pyrite is documented in hydrothermal veins hosted in alluvial deposits from the Erua Basin. We document three generations of pyrite based on petrographic and Nano-SIMS microstructural analysis. First generation pyrite (Py assemblage -1) has extremely high δ³⁴S values of +70.3 to +100.0‰ probably resulting from sequential-cyclic bacterial reduction and Rayleigh fractionation of limited sulfate. Second generation pyrite (Py assemblage -2) has relatively lower δ³⁴S values of -39.8 to -3.3‰, interpreted to reflect the influx of magmatic-related oxidized fluids mixed with remobilized, reduced sedimentary sulfides that then formed the host calcite-pyrite veins. Third generation pyrite (Py assemblage -3) incorporated much heavier ³⁴S resulting in positive δ³⁴S values ranging from +6.8 to +72.2‰, indicating greater reduction of sulfate to H₂S in an anoxic (reducing) environment. One single composite ~ 10 um pyrite grain encompassing all three types of subgrains has a large δ³⁴S range from -22.2‰ along its rim and +100.0‰ from its core (122.2‰ for a single grain, and 139.8‰ for the system). This is the largest known variation in δ³⁴S ever reported in a single pyrite grain from any system on Earth, but is comparable to δ³⁴S ranges in pyrite systems of up to 186‰ reported from microbial sulfate reduction in deep bedrock fracture systems in Sweden. The growth stages from Py-2 to Py-3 indicate a transformation of the environment from an open to a closed (highly reducing) system, and it is these late-stage vein pyrites that are slightly auriferous. This process is interpreted to be induced by the precipitation of sulfides perhaps near the margin of the hydrothermal system or closed growth of pyrite in hydrothermal veins, which both restrict circulation and convection of sulfate within the veins. Our results suggest that the Erua Basin may sit on the fringe of a low-temperature epithermal gold system; other “low-temperature” areas around the TVZ may also preserve similar, potentially enriched zones on the edge of an epithermal Au belt.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"3 ","pages":"Article 100009"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2021.100009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91773063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Condensation corrosion alters the oxygen and carbon isotope ratios of speleothem and limestone surfaces","authors":"Jackson H. White ,&nbsp;David Domínguez-Villar ,&nbsp;Adam Hartland","doi":"10.1016/j.ringeo.2021.100008","DOIUrl":"https://doi.org/10.1016/j.ringeo.2021.100008","url":null,"abstract":"<div><p>Condensation corrosion is a natural process which enhances the chemical weathering of limestone cave chambers and speleothems. We evaluated the use of carbonate tablets for detecting condensation corrosion in Glowworm Cave, New Zealand, using local limestone and speleothem as experimental substrates (herein <em>tablets</em>). Evidence for condensation corrosion was assessed via three methods: gravimetric (mass wasting), microscopic (surface pitting, recrystallization) and isotopic (δ¹³C and δ¹⁸O changes). Our results show little evidence of tablet mass loss throughout a 6-month deployment period. However, SEM imaging and isotope analysis (δ¹³C and δ¹⁸O) of the upper ~50 μm layer of the tablets, suggest that condensation corrosion operates in the cave, especially in sectors affected by large diurnal microclimate variations.</p><p>Most notably, condensation water altered the tablet surface δ¹³C and δ¹⁸O values. Small, positive shifts in surface δ¹³C and δ¹⁸O values are considered to reflect pure dissolution (where dissolution favours the removal of lighter isotopologues). In contrast, tablets that exhibited large positive shifts in δ¹³C in tandem with large negative shifts in δ¹⁸O values, are interpreted as showing calcite recrystallization and the inheritance of higher DIC δ¹³C values (¹³C fractionation by CO₂ degassing), lighter water δ¹⁸O values and/or kinetic fractionation of δ¹⁸O. This study therefore demonstrates that stable isotopes could be applied to detect paleoclimatic episodes of condensation corrosion in speleothems.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"2 ","pages":"Article 100008"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2021.100008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91634227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of mercury vs. cerium in recognising seismically induced fluid overprints on weathered profiles","authors":"Alexandre Raphael Cabral ,&nbsp;Tiago Henrique DeFerreira ,&nbsp;Giulia Marina Cerqueira Dias ,&nbsp;Jefferson Ferreira da Silva ,&nbsp;Fernando Brant Drumond Soares ,&nbsp;Francisco Javier Rios","doi":"10.1016/j.ringeo.2020.100006","DOIUrl":"https://doi.org/10.1016/j.ringeo.2020.100006","url":null,"abstract":"<div><p>Reconnaissance whole-rock chemical analyses for Hg and Ce in weathered Mn-oxide-rich rocks from the Quadrilátero Ferrífero, Minas Gerais, Brazil, show a positive linear correlation. In contrast, manganiferous duricrusts from lateritic profiles in south-western Amazonia, Brazil, have no Hg–Ce correlation. Considering the presence fault-related rock fabrics in the former, such as slickenside striae, breccias and veinlets, and the Hg sensitivity to seismic activity, as well as the adsorption of aqueous Ce onto Mn-oxide precipitates, it is proposed that the positive Hg–Ce correlation can be used as an indicator of seismically induced, low-temperature hydrothermal fluid flow in the weathering zone.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"1 ","pages":"Article 100006"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2020.100006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91720352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New high precision U-Pb ages and Hf isotope data from the Karoo large igneous province; implications for pulsed magmatism and early Toarcian environmental perturbations","authors":"Nicolas D. Greber ,&nbsp;Joshua H.F.L. Davies ,&nbsp;Sean P. Gaynor ,&nbsp;Fred Jourdan ,&nbsp;Hervé Bertrand ,&nbsp;Urs Schaltegger","doi":"10.1016/j.ringeo.2020.100005","DOIUrl":"10.1016/j.ringeo.2020.100005","url":null,"abstract":"<div><p>To better constrain the age and duration of the magmatism associated with the Karoo large igneous province (LIP), we present new U-Pb ID-TIMS dates and εHf values from baddeleyite and zircon grains from Karoo basin mafic sills and from felsic samples from the Lebombo and Mwenezi monoclines, together with an ⁴⁰Ar/³⁹Ar age database of Karoo rocks that has been filtered for true plateau ages with &gt;70% of ³⁹Ar released and in which all ⁴⁰Ar/³⁹Ar ages were recalculated using the current best estimates for the decay constants. Zircon and baddeleyite ages from three Karoo basin sills range from 183.36 ± 0.17/0.27 to 183.06 ± 0.07/0.21 Ma, where the two uncertainties reflect the analytical error and the additional error associated with decay constant uncertainty. Zircon from the Mutandawhe pluton are dated to 176.84 ± 0.06/0.20 Ma, which represents the first high-precision U-Pb age of the late stage Karoo-LIP magmatism in the northern Lebombo-Mwenezi region. Initial hafnium isotopes are close to chondritic for the Karoo basin and central Lebombo samples (εHf from −2 to +3), but more negative for zircon grains from the Mutandawhe pluton (−11.3 ± 1.1, 2SD). In combination with previous studies and in agreement with the updated ⁴⁰Ar/³⁹Ar ages, we show that the sill complex that intruded the Karoo basin was short-lived at ~320 ± 180 ka and that it pre-dated the magmatism of the Ferrar-LIP by around 460 ka, whereas the entire Karoo-LIP was emplaced over a period of ca. 6.5 Ma. Based on high-precision U-Pb geochronology, Karoo-LIP magmatism occurred after 183.36 ± 0.17 Ma and therefore postdated the extinction pulses of the late Pliensbachian and likely the Pliensbachian-Toarcian boundary. However, we support previous conclusions that the start of the Karoo-LIP activity agrees with the onset of the Toarcian oceanic anoxic event and the early Toarcian warming, indicating that these environmental changes were likely a response to the magmatic activity of the Karoo-LIP.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"1 ","pages":"Article 100005"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2020.100005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79577709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The occurrence of Hg, Se, S, Ni, Cr, and Th in Talc Ore: A scanning electron microscopy (SEM) study of historical samples from the Willow Creek Mine, Montana","authors":"Ethan Klein ,&nbsp;Mark P.S. Krekeler","doi":"10.1016/j.ringeo.2020.100003","DOIUrl":"https://doi.org/10.1016/j.ringeo.2020.100003","url":null,"abstract":"<div><p>Due to short timeframes over which small-scale talc mines operate (approximately 1 to 10 years), detailed characterization of their mineralogy and geochemistry in the peer-reviewed literature is limited. Investigation of sample 1497 of the Willow Creek Mine, Montana by scanning electron microscopy using back scatter detection (SEM-BSD) indicates a complex minor mineral assemblage. Hg-Se-S minerals are associated with graphite whereas Zn-Cr-Ni minerals and Th minerals are dispersed in the talc matrix. Notably, Hg, Se, Zn, Cr, and Ni are of human health concern. Minerals with these elements are ~ 20 to 0.4 µm in diameter, and all have examples in the PM₁₀ or PM_2.5 size fraction. These minerals would likely not be separated out during processing of talc ore and would be inhalable. Results indicate a need for detailed SEM-BSD investigations of historic talc products from the Willow Creek Mine and for investigating ore from similar settings in Montana.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"1 ","pages":"Article 100003"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2020.100003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91720350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late Cretaceous age of the Crucea uranium ore deposit, East Carpathians, Romania","authors":"Emilie E. Bowman ,&nbsp;Mihai N. Ducea ,&nbsp;Lucian Petrescu","doi":"10.1016/j.ringeo.2020.100002","DOIUrl":"https://doi.org/10.1016/j.ringeo.2020.100002","url":null,"abstract":"<div><p>U-Th-Pb chemical dating is a suitable technique for determining ages of minerals (e.g., uraninite, monazite) that have large amounts of U and/or Th such that the radiogenic Pb can be measured. We investigate the chemical age of bitumen-supported uraninite from the vein-type Crucea uranium deposit, which is located in the Tulghes Series basement of the East Carpathians. We find that uraninite has a crystallization age of 88.8 ± 4.9 Ma, much younger than the Paleozoic age of magmatic emplacement and metamorphism of the host rock. The age of uraninite mineralization corresponds well with the timing of Mid-to-Late Cretaceous thrust faulting in the East Carpathians fold and thrust belt, during which the Tulghes Series was thrust over organic carbon-rich black shales of the Ceahlau and Moldavides nappes. These thrust faults likely acted as conduits through which U-rich carbonaceous matter, extracted from the black shales, migrated upward to be emplaced as veins.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"1 ","pages":"Article 100002"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2020.100002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91720349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The growth of open access publishing in geochemistry","authors":"Olivier Pourret ,&nbsp;Dasapta Erwin Irawan ,&nbsp;Jonathan P. Tennant ,&nbsp;Andrew Hursthouse ,&nbsp;Eric D. van Hullebusch","doi":"10.1016/j.ringeo.2020.100001","DOIUrl":"https://doi.org/10.1016/j.ringeo.2020.100001","url":null,"abstract":"<div><p>In this communication, we look at Open Access (OA) publishing practices in geochemistry. We examine a list of 56 journals and assess whether Article Processing Charges (APCs) and Journal Impact Factors (JIFs) appear to influence publication or not. More than 40% of articles in 2018–2019 were published OA, and about 70% of that portion in fully OA journals. These had a mean APC of US$ 900, whereas the remaining were published in hybrid journals with a higher mean APC of more than $US 1,800. A moderate and positive correlation is found between the number of OA articles published in hybrids journals and their JIF, whereas there is a stronger positive relationship between the number of OA articles published in fully OA journals and the APC. For OA articles published in hybrid journals, it seems that the proportion of OA articles tends to increase in journals with higher JIF.</p></div>","PeriodicalId":101085,"journal":{"name":"Results in Geochemistry","volume":"1 ","pages":"Article 100001"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ringeo.2020.100001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91720348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}