Sample Description Seven microinclusion-bearing fibrous diamonds from a single source in Canada were selected for the present study from a private collection of M. Schrauder (Vienna, Austria). The exact origin of these diamonds is unknown; however, based on the year of first mine production compared to when these diamonds were originally acquired (2009), potential mines are Diavik (with an emplacement age of 55‒56 Ma; Graham et al., 1999; Creaser et al., 2004), Ekati (45‒75 Ma; Lockhart et al., 2003; Creaser et al., 2004), Jericho (~172 Ma; Heaman et al., 2002), Victor (170‒180 Ma; Januszczak et al., 2013) or Snap Lake (523‒535 Ma; Agashev et al., 2001; Heaman et al., 2004). The diamonds are all 3 to 4 mm in diameter, vary in weight between 91 to 116 mg, have cubic morphology, and are white to dark grey in colour. Five of the diamonds are fully fibrous whereas two (515 and 516) have a fibrous coat overgrowth on a small microinclusion-free octahedral core (<800 μm across). Each diamond was laser-cut twice to create two parallel side sections and a central thin plate that was polished on both sides; all parts were then cleaned ultrasonically in a mixture of concentrated HF (29 N) and HNO3 (16 N) for >2 h and washed with ethanol and distilled water.
{"title":"Sr-Nd-Pb isotopes of fluids in diamond record two-stage modification of the continental lithosphere","authors":"Y Weiss, J.M. Koornneef, G.R. Davies","doi":"10.7185/geochemlet.2329","DOIUrl":"https://doi.org/10.7185/geochemlet.2329","url":null,"abstract":"Sample Description Seven microinclusion-bearing fibrous diamonds from a single source in Canada were selected for the present study from a private collection of M. Schrauder (Vienna, Austria). The exact origin of these diamonds is unknown; however, based on the year of first mine production compared to when these diamonds were originally acquired (2009), potential mines are Diavik (with an emplacement age of 55‒56 Ma; Graham et al., 1999; Creaser et al., 2004), Ekati (45‒75 Ma; Lockhart et al., 2003; Creaser et al., 2004), Jericho (~172 Ma; Heaman et al., 2002), Victor (170‒180 Ma; Januszczak et al., 2013) or Snap Lake (523‒535 Ma; Agashev et al., 2001; Heaman et al., 2004). The diamonds are all 3 to 4 mm in diameter, vary in weight between 91 to 116 mg, have cubic morphology, and are white to dark grey in colour. Five of the diamonds are fully fibrous whereas two (515 and 516) have a fibrous coat overgrowth on a small microinclusion-free octahedral core (<800 μm across). Each diamond was laser-cut twice to create two parallel side sections and a central thin plate that was polished on both sides; all parts were then cleaned ultrasonically in a mixture of concentrated HF (29 N) and HNO3 (16 N) for >2 h and washed with ethanol and distilled water.","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135389325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I.V. Sanislav, R. Mathur, P. Rea, P.H.G.M. Dirks, B. Mahan, L. Godfrey, H. Degeling
Ninety chalcopyrite samples were collected from drill holes across well-known ore bodies and the low-grade envelope around the Mt Isa deposit. The textural position of chalcopyrite grains targeted for analysis were determined before the sulphides were analysed, and sulphides in similar textural positions were compared. Full log and assay data were available for all drill holes. The sampling strategy involved: to sample across the ore body from the core of the ore body to the most distal parts that contain chalcopyrite and to systematically collect samples in relationships with major structures, to sample within the same stratigraphic horizon, to sample across the entire deposit. Chalcopyrite grains were handpicked from each sample at the Juniata College, USA and sampled with a drill dremel tool. Between 10 to 50 mg of chalcopyrite was dissolved in 4 ml of ultrapure, heated, aqua regia overnight. Due to the fact copper is a dominant ion in the mineral, no column chemistry was conducted on the chalcopyrite samples as demonstrated in (Mathur et al., 2005; Zhu et al., 2000; Zhang et al., 2020). Isotope analyses were carried out on MCICP-MS instruments at various facilities (Penn State University, Washington State University and Rutgers University). Cu isotope values were corrected for mass bias using traditional standard–sample–standard bracketing with the NISTSRM976 standard reference material and data are presented in the traditional delta notation (in per mil) compared to this standard. The instruments were in wet-plasma mode and the solutions were measured at 200 ng/g. Samples and reference materials matched to within 30 % of the Cu signal. QA/QC for the results was monitored using an in-house USA coin (1838 USA CENT δCu = 0.01 ± 0.06 ‰ (n=39 combined from all three locations) and BVHO-2 with values overlapping those reported in the literature.
{"title":"A magmatic copper and fluid source for the sediment-hosted Mount Isa deposit","authors":"I.V. Sanislav, R. Mathur, P. Rea, P.H.G.M. Dirks, B. Mahan, L. Godfrey, H. Degeling","doi":"10.7185/geochemlet.2330","DOIUrl":"https://doi.org/10.7185/geochemlet.2330","url":null,"abstract":"Ninety chalcopyrite samples were collected from drill holes across well-known ore bodies and the low-grade envelope around the Mt Isa deposit. The textural position of chalcopyrite grains targeted for analysis were determined before the sulphides were analysed, and sulphides in similar textural positions were compared. Full log and assay data were available for all drill holes. The sampling strategy involved: to sample across the ore body from the core of the ore body to the most distal parts that contain chalcopyrite and to systematically collect samples in relationships with major structures, to sample within the same stratigraphic horizon, to sample across the entire deposit. Chalcopyrite grains were handpicked from each sample at the Juniata College, USA and sampled with a drill dremel tool. Between 10 to 50 mg of chalcopyrite was dissolved in 4 ml of ultrapure, heated, aqua regia overnight. Due to the fact copper is a dominant ion in the mineral, no column chemistry was conducted on the chalcopyrite samples as demonstrated in (Mathur et al., 2005; Zhu et al., 2000; Zhang et al., 2020). Isotope analyses were carried out on MCICP-MS instruments at various facilities (Penn State University, Washington State University and Rutgers University). Cu isotope values were corrected for mass bias using traditional standard–sample–standard bracketing with the NISTSRM976 standard reference material and data are presented in the traditional delta notation (in per mil) compared to this standard. The instruments were in wet-plasma mode and the solutions were measured at 200 ng/g. Samples and reference materials matched to within 30 % of the Cu signal. QA/QC for the results was monitored using an in-house USA coin (1838 USA CENT δCu = 0.01 ± 0.06 ‰ (n=39 combined from all three locations) and BVHO-2 with values overlapping those reported in the literature.","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135427674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Korolev, M. Kopylova, E. Dubinina, R. A. Stern, A. Methods
{"title":"Contrasting oxygen isotopes in garnet from diamondiferous and barren eclogitic parageneses","authors":"N. Korolev, M. Kopylova, E. Dubinina, R. A. Stern, A. Methods","doi":"10.7185/geochemlet.2328","DOIUrl":"https://doi.org/10.7185/geochemlet.2328","url":null,"abstract":"","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46558220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Methods Previous Crustal Growth Estimates Previous crustal growth estimates calculated by Dhuime et al., (2012; 2017) are here collectively referred to as D27 and these widely used crustal growth curves are based on a modification of the calculations of Belusova et al. (2010). In the calculation scheme used by D27, an age spectrum was obtained by compiling zircon Hfisotope depleted mantle model extraction ages. Each individual zircon U-Pb + Hf isotope data point was used to calculate a depleted mantle model extraction age, and these model ages were binned across geologic time. This age distribution was corrected for reworking using a modification of the methods employed by (Belousova et al., 2010). Instead of considering only zircon Hf isotope data, D27 used zircon O-isotope data to identify crustal reworking signals in the zircon record where zircon oxygen isotope values above the mantle range were considered to be evidence of a reworking signal. A curve proposed to be the crustal growth rate was calculated by determining the relationship between crustal reworking – identified using zircon Hf isotope model ages – and juvenile crustal growth – identified using O-isotope ratios. These calculations are replicated in Supplementary Table S-2. However, there is a flaw in the calculations employed in the D27 work (as pointed out by (Korenaga, 2018)).
{"title":"A whole-lithosphere view of continental growth","authors":"J. Reimink, J. Davies, Jeff Moyen, D. Pearson","doi":"10.7185/geochemlet.2324","DOIUrl":"https://doi.org/10.7185/geochemlet.2324","url":null,"abstract":"Methods Previous Crustal Growth Estimates Previous crustal growth estimates calculated by Dhuime et al., (2012; 2017) are here collectively referred to as D27 and these widely used crustal growth curves are based on a modification of the calculations of Belusova et al. (2010). In the calculation scheme used by D27, an age spectrum was obtained by compiling zircon Hfisotope depleted mantle model extraction ages. Each individual zircon U-Pb + Hf isotope data point was used to calculate a depleted mantle model extraction age, and these model ages were binned across geologic time. This age distribution was corrected for reworking using a modification of the methods employed by (Belousova et al., 2010). Instead of considering only zircon Hf isotope data, D27 used zircon O-isotope data to identify crustal reworking signals in the zircon record where zircon oxygen isotope values above the mantle range were considered to be evidence of a reworking signal. A curve proposed to be the crustal growth rate was calculated by determining the relationship between crustal reworking – identified using zircon Hf isotope model ages – and juvenile crustal growth – identified using O-isotope ratios. These calculations are replicated in Supplementary Table S-2. However, there is a flaw in the calculations employed in the D27 work (as pointed out by (Korenaga, 2018)).","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44306107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J.P.H. Perez, M. Okhrymenko, R. Blukis, V. Roddatis, S. Mayanna, J.F.W. Mosselmans, L.G. Benning
{"title":"Vivianite-parasymplesite solid solution: A sink for arsenic in ferruginous environments?","authors":"J.P.H. Perez, M. Okhrymenko, R. Blukis, V. Roddatis, S. Mayanna, J.F.W. Mosselmans, L.G. Benning","doi":"10.7185/geochemlet.2325","DOIUrl":"https://doi.org/10.7185/geochemlet.2325","url":null,"abstract":"","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136266526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-01DOI: 10.7185/geochemlet.2301cor
R. Bronner, K. Thompson, C. Dreher, E. Runge, E. Voggenreiter, J. Shuster, B. Wan, P. Joshi, Stefan Fischer, J. Duda, A. Kappler, M. Mansor
{"title":"Corrigendum to “Co-reduction of Fe(III) and S0 drives Fe-S biomineral formation and phosphate mobilisation” by Bronner et al., 2023","authors":"R. Bronner, K. Thompson, C. Dreher, E. Runge, E. Voggenreiter, J. Shuster, B. Wan, P. Joshi, Stefan Fischer, J. Duda, A. Kappler, M. Mansor","doi":"10.7185/geochemlet.2301cor","DOIUrl":"https://doi.org/10.7185/geochemlet.2301cor","url":null,"abstract":"","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42232366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Bonnet, M. Muñoz, O. Mathon, V. Motto-Ros, A. Elghali, F. Parat, J. Aubineau, J. Bodinier
Ø 1. Samples and Model Compounds o 1.1. Natural Fluorapatite Samples o 1.2. Model Compounds Ø 2. Analytical Methods o 2.1. X-ray Fluorescence (XRF) o 2.2. X-ray Diffraction (XRD) o 2.3. Laser Induced Breakdown Spectroscopy (LIBS) o 2.4. Fourier Transform Infrared Spectroscopy (FTIR) o 2.5. X-ray Absorption Spectroscopy (XAS) § 2.5.1. XAS pellets § 2.5.2. Data acquisition § 2.5.3. XANES and EXAFS data reduction § 2.5.4. Wavelet analysis § 2.5.5. Linear combination fit (LCF) § 2.5.6. EXAFS and Fourier transform multi-shell fit Ø Supplementary Table S-1 Ø Supplementary Figures S-1 to S-9 Ø Supplementary Information References
Ø1。样品和模型化合物o 1.1。天然氟磷灰石样品o 1.2。模型化合物Ø2.1.分析方法x射线荧光(XRF) o 2.2。x射线衍射(XRD) o 2.3。激光诱导击穿光谱(LIBS)傅里叶变换红外光谱(FTIR)为2.5。x射线吸收光谱(XAS)§2.5.1。XAS颗粒§2.5.2。数据采集§2.5.3。XANES和EXAFS数据缩减§2.5.4。小波分析§2.5.5。线性组合拟合(LCF)§2.5.6。EXAFS和傅立叶变换多壳拟合Ø补充表S-1 Ø补充图S-1至S-9 Ø补充信息参考文献
{"title":"Sorption model for yttrium in fluorapatite: Geochemical implications","authors":"C. Bonnet, M. Muñoz, O. Mathon, V. Motto-Ros, A. Elghali, F. Parat, J. Aubineau, J. Bodinier","doi":"10.7185/geochemlet.2326","DOIUrl":"https://doi.org/10.7185/geochemlet.2326","url":null,"abstract":"Ø 1. Samples and Model Compounds o 1.1. Natural Fluorapatite Samples o 1.2. Model Compounds Ø 2. Analytical Methods o 2.1. X-ray Fluorescence (XRF) o 2.2. X-ray Diffraction (XRD) o 2.3. Laser Induced Breakdown Spectroscopy (LIBS) o 2.4. Fourier Transform Infrared Spectroscopy (FTIR) o 2.5. X-ray Absorption Spectroscopy (XAS) § 2.5.1. XAS pellets § 2.5.2. Data acquisition § 2.5.3. XANES and EXAFS data reduction § 2.5.4. Wavelet analysis § 2.5.5. Linear combination fit (LCF) § 2.5.6. EXAFS and Fourier transform multi-shell fit Ø Supplementary Table S-1 Ø Supplementary Figures S-1 to S-9 Ø Supplementary Information References","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45047790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Borghini, P. Fumagalli, F. Arrigoni, E. Rampone, J. Berndt, S. Klemme, M. Tiepolo
Abstract
摘要
{"title":"Fast REE re-distribution in mantle clinopyroxene via reactive melt infiltration","authors":"G. Borghini, P. Fumagalli, F. Arrigoni, E. Rampone, J. Berndt, S. Klemme, M. Tiepolo","doi":"10.7185/geochemlet.2323","DOIUrl":"https://doi.org/10.7185/geochemlet.2323","url":null,"abstract":"Abstract","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42361665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Y. Yang, A. Galy, J. Zhang, F. Lambert, M. Zhang, F. Zhang, X. Fang
In this study, the climate model Community Earth System Model version 1.2.2 (CESM1.2.2; Hurrell et al., 2013) is used, which was developed and is maintained by the National Center for Atmospheric Research. CESM1.2.2 can simulate the present climate well (Knutti et al., 2013) and has also been widely used in palaeoclimate research (e.g., Liu et al., 2020; Zhang et al., 2021). In this model, the atmospheric component, Community Atmosphere Model version 5 (CAM5), is run at a horizontal resolution of ~1.9° (latitude) × 2.5° (longitude) with 30 levels in the vertical dimension, and each cell considers the emission, transport and deposition of dust (Ganopolski et al., 2010). The land module, Community Land Model version 4.0 (CLM4.0), is run at the same horizontal resolution as CAM5.
本研究采用气候模式Community Earth System model 1.2.2 (CESM1.2.2;使用Hurrell等人，2013)，该方法由国家大气研究中心开发并维护。CESM1.2.2可以很好地模拟当前气候(Knutti et al.， 2013)，也被广泛应用于古气候研究(如Liu et al.， 2020;Zhang等人，2021)。在该模型中，群落大气模型版本5 (CAM5)的大气分量以~1.9°(纬度)× 2.5°(经度)的水平分辨率运行，垂直维度为30个水平，每个单元考虑粉尘的排放、输送和沉积(Ganopolski et al.， 2010)。土地模块，社区土地模型版本4.0 (CLM4.0)，以与CAM5相同的水平分辨率运行。
{"title":"Dust transport enhanced land surface weatherability in a cooling world","authors":"Y. Yang, A. Galy, J. Zhang, F. Lambert, M. Zhang, F. Zhang, X. Fang","doi":"10.7185/geochemlet.2322","DOIUrl":"https://doi.org/10.7185/geochemlet.2322","url":null,"abstract":"In this study, the climate model Community Earth System Model version 1.2.2 (CESM1.2.2; Hurrell et al., 2013) is used, which was developed and is maintained by the National Center for Atmospheric Research. CESM1.2.2 can simulate the present climate well (Knutti et al., 2013) and has also been widely used in palaeoclimate research (e.g., Liu et al., 2020; Zhang et al., 2021). In this model, the atmospheric component, Community Atmosphere Model version 5 (CAM5), is run at a horizontal resolution of ~1.9° (latitude) × 2.5° (longitude) with 30 levels in the vertical dimension, and each cell considers the emission, transport and deposition of dust (Ganopolski et al., 2010). The land module, Community Land Model version 4.0 (CLM4.0), is run at the same horizontal resolution as CAM5.","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44767293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Analytical techniques utilised in this study are based on W separation procedures described in earlier work (Willbold et al., 2011; Mei et al., 2018; Tusch et al., 2019). We further optimised the W separation procedure for larger sample sizes while maintaining measurement precision and accuracy. Therefore, we devised a new W separation procedure to process up to 6 g of sample material on a three-step ion exchange chromatography. We utilised the precipitation of a W-free fluoride phase during sample digestion, which removed the majority of matrix elements, while quantitatively retaining W. Sample preparation was carried out under metal-free clean laboratory conditions at the University of Göttingen.
{"title":"Ancient mantle plume components constrained by tungsten isotope variability in arc lavas","authors":"N. Messling, G. Wörner, M. Willbold","doi":"10.7185/geochemlet.2321","DOIUrl":"https://doi.org/10.7185/geochemlet.2321","url":null,"abstract":"Analytical techniques utilised in this study are based on W separation procedures described in earlier work (Willbold et al., 2011; Mei et al., 2018; Tusch et al., 2019). We further optimised the W separation procedure for larger sample sizes while maintaining measurement precision and accuracy. Therefore, we devised a new W separation procedure to process up to 6 g of sample material on a three-step ion exchange chromatography. We utilised the precipitation of a W-free fluoride phase during sample digestion, which removed the majority of matrix elements, while quantitatively retaining W. Sample preparation was carried out under metal-free clean laboratory conditions at the University of Göttingen.","PeriodicalId":12613,"journal":{"name":"Geochemical Perspectives Letters","volume":" ","pages":""},"PeriodicalIF":4.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43091037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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