Russian Geology and Geophysics最新文献

{"title":"High-Purity Quartzite from East Sayan","authors":"A. I. Nepomnyashchikh, A. Fedorov, A. P. Zhaboedov, M. G. Volkova","doi":"10.2113/rgg20234586","DOIUrl":"https://doi.org/10.2113/rgg20234586","url":null,"abstract":"\u0000 —We consider high-purity quartzites of the Gargan quartz-bearing zone of East Sayan. The main productive varieties of quartzites have been identified. The structures, textures, chemical composition, and degree of enrichment of the quartzites and the mineral and fluid inclusions in them have been studied. Quartz concentrates of high and ultrahigh purity have been obtained from superquartzite and compact quartzite.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42974455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphology and Specific Features of Formation of Thermal Lake Utinaya Banya (Iturup Island, Southern Kuril Islands)","authors":"O. Khubaeva, A. Degterev, D. Kozlov, A.L. Khomchanovskii, R. Zharkov, F. Batanov","doi":"10.2113/rgg20234551","DOIUrl":"https://doi.org/10.2113/rgg20234551","url":null,"abstract":"\u0000 —This paper describes a set of studies performed at a thermal manifestation (Lake Utinaya Banya) on the Iturup Island (Kuril Islands). These studies include bathymetric survey of the lake basin, geometric leveling across the lake, pitting, sampling of thermal waters from the lake and springs, hydrochemical research, and isotopic analysis of oxygen and hydrogen in the lake water. It is suggested by the shape of the lake basin (close to lenticular with a significant concentric depression), the underwater gas-hydrothermal vents, the bank along the perimeter of the lake basin, and the presence of several layers of clastic deposits at the top of the rampart that the lake was formed by a hydrothermal eruption. The lake temperature has remained constant over the years and ranges on average from 25 to 15 °C, depending on the season. The water of Lake Utinaya Banya is represented by acidic, sulfate calcium, and low-mineralized waters.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46872501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineral Associations of Concentrates from Gold-Bearing Placers of the Miass Placer Zone (South Urals) and Possible Primary Sources of Gold","authors":"A.K. Kozin, S. Stepanov, R. Palamarchuk, V. Shilovskikh, V.S. Zhdanova","doi":"10.2113/rgg20234543","DOIUrl":"https://doi.org/10.2113/rgg20234543","url":null,"abstract":"\u0000 —The placer deposits of the Miass valley in the Southern Urals have been known since the beginning of the 19th century. Over two centuries of mining more than 120 tons of gold have been extracted from alluvial and alluvial–deluvial placers. Despite the industrial significance of this territory, native gold of alluvial deposits is practically unstudied and there is no data on the mineral composition of concentrates. Native gold and heavy fraction minerals from seven placers of the Miass placer zone of deluvial–alluvial and alluvial types were researched. The study of the typomorphic features of native gold and distribution of heavy fraction minerals in loose deposits makes it possible to determine the genetic types of primary sources of placer formation. Chrome-spinel and ilmenite prevail in the concentrates, magnetite, epidote, rutile, titanite, clinopyroxene, hematite, zircon, garnets, and monazite are less common. Chromespinelides of various placers are represented by chromite and subferrichromite, they are characterized by a high average content of Cr2O3 (50.9 wt.%). Chromespinelide chemical composition features show evidence of its penetration into placer sediments from rocks of the ophiolitic association. The composition and morphological features of phosphates of rare earth elements (monazite and xenotime) indicate their metamorphogenic nature and penetration into placers from the Riphean strata. Native gold is characterized by a low degree of roundness. Mineral inclusions in native gold are represented by sulfides, arsenides, bismuthides, cuprous gold, platinoids. Composition of native gold from the Miass River valley placers varies over a wide range. The main admixtures are silver (4.5–23.4 wt.%) and mercury (up to 5.14 wt.%), copper (up to 2.03 wt.%) was noted in several grains. The EBSD study of native gold internal structure showed predominance of primary crystallization structures, a low degree of deformation and growth of gold-rich rims with a fine-grained mosaic structure. Formation of gold-rich rims in gold grains in placers is explained by recrystallization of the most deformed parts of gold during transportation. Placers occurred due to the destruction of primary sources located in the upper reaches of streams or near them, which is confirmed by a low degree of grains’ roundness. The composition of native gold in combination with a set of micro-inclusions indicate the gold–sulfide-quartz type of mineralization of most primary sources.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48246992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Modeling of Transport of Ore-Forming Components by Water-Salt Fluids at Elevated P–T Parameters","authors":"B. Damdinov, A. R. Kotelnikov, N. Suk, L. B. Damdinova, G. M. Akhmedzhanova","doi":"10.2113/rgg20234565","DOIUrl":"https://doi.org/10.2113/rgg20234565","url":null,"abstract":"\u0000 –The modeling experiments were conducted to study transport of ore-forming components in the lithosphere, taking into account the possibility of ore matter remobilization under endogenous conditions. The experiments, which included temperature gradient-based ones, were conducted at T = 500–680 °C and P = 1.5–5.0 kbar on high gas pressure devices (HGPD) in highly concentrated water-salt solutions of alkaline specifics. The experiments consisted of two stages. During the first stage, we tested the possibility of recrystallization of the ore matter of “black smokers” in the presence of basalt at 500 ℃ and 5 kbar and water-salt fluids at a concentration of up to 5 wt.%. At the second stage, mechanisms of ore-forming components transport (P–T parameters: 450–650 ℃ and up to 5 kbar) were studied under conditions of a temperature gradient (0.3–0.4 °C/mm). The duration of the experiments was 14 days. The test products were: oceanic basalts, granite model mixtures (Fsp + Qz), as well as various sulfide minerals, oxides and noble metals (Au, Pt). It has been shown that at T 680–650 °C, intensive recrystallization and deposition of sulfide minerals (sphalerite, galena, chalcopyrite, pyrite, cooperite, etc.) along with feldspars, micas and quartz, takes place. Intensive transport of both the main petrogenic (Si, Ti, Al, Fe, Mn, Mg, Ca, Na, K) and ore-forming elements (Ni, Cu, Zn, As, Pb, Cd, Pt, Au, Hg, Bi), and a joint transport of silicate and ore matter is established. Some ore elements are either included into compositions of solid solutions or present as impurities in ore-forming minerals: Fe, Ni, Cu → pyrite, pyrrhotite; Pb, Au, As, Bi, Zn → galena; Zn, Cd, Fe, Mn, Cu → sphalerite; As → galena, orpiment, realgar, gold; Hg → gold. The obtained data attest to the possibility of modeling ore mineralization mechanisms. The experimental results apply to explain the genesis of the Zun-Kholba gold–quartz–sulfide deposit and describe the processes of epigenetic transformations of primary ores in polymetallic deposits, on the example of the Ozernoe Pb–Zn deposit. The discussed mechanisms can be extended to explain the genesis of other ore deposits occurring in the zones of tectonic-magmatic activation.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43320243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the Distribution of Rare-Earth Elements and Strontium in Apatite from Rocks of the Vuoriyarvi Carbonatite Complex by Total-Reflection X-Ray Fluorescence Spectrometry (TXRF): First Results and Prospects","authors":"E. Kozlov, A. Maltsev, E. Fomina, M. Sidorov, A. N. Zhilicheva, S. V. Panteeva, A. Kompanchenko, A. Chernyavskiy","doi":"10.2113/rgg20234580","DOIUrl":"https://doi.org/10.2113/rgg20234580","url":null,"abstract":"\u0000 —We have studied the trace element composition of apatite from several varieties of carbonatites and associated apatite ores of the Vuoriyarvi alkaline-ultrabasic carbonatite complex (Kola region, northwestern Russia), which hosts several commercial deposits of apatite–magnetite and pyrochlore ores and large-scale unexplored rare-earth mineral occurrences. The composition of apatite was analyzed by total-reflection X-ray fluorescence spectrometry (hereafter, TXRF). Verification of the obtained results was carried out by ICP-MS analysis of weighed portions of apatite monomineral samples. It is shown that during the evolution of the Vuoriyarvi carbonatites and associated apatite–magnetite ores, the contents of Sr and rare-earth elements (REE) and the degree of REE fractionation in apatite synchronously increased. The obtained TXRF data on the composition of apatite in the carbonatite complex demonstrate the efficiency of TXRF and its high potential in both applied and fundamental research concerned with apatite of various geologic objects.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46290792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous Subcontinental Lithospheric Mantle below the South Margin of the Siberian Craton: Evidence from Composition of Paleoproterozoic Mafic Associations","authors":"O. Turkina, A. Izokh","doi":"10.2113/rgg20234575","DOIUrl":"https://doi.org/10.2113/rgg20234575","url":null,"abstract":"\u0000 —Paleoproterozoic mafic associations of the Irkut block from the Sharyzhalgai uplift are gabbro-dolerite dikes and small gabbronorite and monzodiorite massifs, which formed at 1.87–1.84 Ga and were coeval with granitoids and basite intrusions of the South Siberian magmatic belt (SSB). All the Paleoproterozoic mafic associations of the Irkut block are characterized by the presence of biotite and alkali feldspar, enrichment in K2O, LILE, Th, and light REE, highly fractionated multielement spectra with sharp Nb and Ti depletion, and extremely low εNd(T) from –5.1 to –10.1. In these compositional features, they are similar to mafic complexes in the central and eastern parts of the SSB (the Baikal uplift and the western Aldan shield). Their geochemical and isotopic characteristics did not result from crustal contamination but point to derivation from the subcontinental lithospheric mantle (SCLM) enriched by reaction with felsic subduction-related and OIB-like mafic melts formed at a low degree of melting. The geochemically contrasting Paleoproterozoic gabbronorites in the Onot block of the Sharyzhalgai uplift are marked by depletion in K2O, Ba, LILE, Th, and light REE, weak depletion in Nb, and higher εNd(T) from –0.3 to –1.4. The gabbronorites indicate not only an increase in the contribution of a depleted source to their genesis but also the heterogeneity of the subcontinental lithospheric mantle below the south margin of the Siberian Craton. The formation of enriched SCLM domains throughout the South Siberian belt was mainly the result of Archean subduction-related metasomatic processes. The wide distribution of Paleoproterozoic mafic complexes with subduction geochemical signatures and negative εNd(T) on most early Precambrian cratons is due to global change in the composition and an increase in the heterogeneity of the subcontinental lithospheric mantle toward the end of the Archean.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44364490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The NaCl–CaCO3–MgCO3 System at 3 GPa: Implications for Mantle Solidi","authors":"A. Shatskiy, I. Podborodnikov, A. Arefiev, K. Litasov","doi":"10.2113/rgg20234587","DOIUrl":"https://doi.org/10.2113/rgg20234587","url":null,"abstract":"\u0000 —Alkaline chlorides are important constituents of carbonatitic inclusions in magmatic minerals from kimberlites and lamproites, mantle xenoliths from kimberlites, and diamonds from kimberlites and placers around the world. This indicates the participation of alkali chlorides, along with carbonates, in the processes of melting of mantle rocks, which makes it important to study chloride–carbonate systems at mantle pressures. In this work, we studied the phase relations in the NaCl–CaCO3–MgCO3 system at 3 GPa in the range of 800–1300 °С using a multianvil press. It has been found that the NaCl–CaCO3 and NaCl–MgCO3 binaries have the eutectic type of T–X diagram. The halite–calcite eutectic is situated at 1050 °C and Na2# = 36, while the halite–magnesite eutectic is located at 1190 °C and Na2# = 77, where Na2# = 2NaCl/(2NaCl + CaCO3 + MgCO3) · 100 mol.%. In the NaCl–CaCO3–MgCO3 ternary, subsolidus assemblages are represented by halite and calcium–magnesium carbonates. Just below solidus, two assemblages are stable: halite + magnesite + dolomite and halite + dolomite–calcite solid solution. The minimum on the liquidus/solidus surface corresponds to the halite–Ca0.84Mg0.16CO3 dolomite eutectic, located at about 1000 °С with Na2#/Ca# = 34/84, where Ca# = Ca/(Ca + Mg) · 100 mol.%. At Ca# ≤ 73, the melting is controlled by the halite + dolomite = magnesite + liquid ternary peritectic, located at 1050 °C with Na2#/Ca# = 31/73. According to the data obtained, it can be assumed that at 3 GPa the solidi of NaCl-bearing carbonated peridotite and eclogite are controlled by the peritectic reaction halite + dolomite = magnesite + liquid, located at about 1050 °C. The melting is accompanied by the formation of a chloride–carbonate melt containing (wt.%): NaCl (35), CaCO3 (56), and MgCO3 (9).","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43144571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organic Carbon Distribution in Cambrian Deposits of the cis-Yenisei Subbasin","authors":"A. Kontorovich, E. Kostyreva","doi":"10.2113/rgg20234578","DOIUrl":"https://doi.org/10.2113/rgg20234578","url":null,"abstract":"\u0000 —The study considers the distribution of organic carbon in different formations and facies of Cambrian age identified in the cis-Yenisei subbasin. Two groups of depositional environments were recognized in the deepwater perioceanic and epicontinental basins, which accumulated sediments with elevated and sometimes anomalously high concentrations of planktonic and benthic organic matter. These are 1) local centers in the Tommotian (Oksym Formation) and Botomian stages of the lower Cambrian, Mayan (Elogui and Pudzhelga formations) and Ayusokkanian (Kondes Formation) stages of the middle Cambrian; 2) regional Kuonamka horizon, which is composed of Toyonian and Amgian deposits and occurs along the margins of the Siberian Platform; it is represented by the Inikan and Kuonamka formations in the east of the Siberian Platform and by the Paidugina Formation in the study area. The study shows that the organic matter has undergone a high degree of transformation and reached the apocatagenesis grade. The results of the study assume that the hydrocarbon generation intensity was high in the Cambrian formations of the cis-Yenisei subbasin in the geological past.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41903781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon Isotope Fractionation during Metal–Carbonate Interaction at the Mantle Pressures and Temperatures","authors":"V. Reutsky, Yury M. Borzdov, Y. Bataleva, Y. Palyanov","doi":"10.2113/rgg20234561","DOIUrl":"https://doi.org/10.2113/rgg20234561","url":null,"abstract":"\u0000 —Subduction of marine carbonates is accompanied by numerous transformations and interactions, including reactions with reduced mantle rocks. At depths of 250–300 km, carbonates enter mantle zones where metallic iron can be stable. The interaction of carbonates with metals is one of the mechanisms of the release of elemental carbon and the formation of diamond. These processes are also accompanied by carbon isotope fractionation and can result in a significant isotopic heterogeneity of mantle carbon. In this work we study the partitioning of carbon isotopes between carbon and carbon-bearing phases obtained in experiments on the interaction of FeNi alloy with (Mg,Ca)CO3, which simulates mantle–crust redox reactions in the temperature range 800–1550 °C and at a pressure of 6.3 GPa. It has been established that at 800–1000 °C, the carbon of carbonate is reduced at the metal/carbonate interface and dissolves in the FeNi alloy. This process leads to a 17–20‰ depletion of the metal in the heavy carbon isotope. At temperatures above 1330 °C, the fractionation of carbon isotopes between carbonate and metal–carbon melts is reduced to 8.5‰, approaching the thermodynamic calcite–cohenite isotope equilibrium. At temperatures above 1400 °C, diamond crystallizes from metal–carbon and carbonate melts, which leads to isotopic depletion of the metal–carbon melt. As a result, the measured carbon isotope fractionation between the carbonate and metal–carbon melts increases and moves away from the thermodynamic CaCO3–Fe3C equilibrium line. The carbonate–metal redox interaction is supposed to be one of the probable mechanisms of the formation of isotopically light carbon in the mantle at the expense of the marine carbonate sediments subducted into the mantle. This mechanism also provides the formation of anomalous isotopically heavy carbonates found in kimberlites of the Siberian Platform.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45236289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magmatic and Xenogenic Zircons from Granitoids of the Kaa-Khem Batholith as Age Markers of the Crust in the Junction Zone of the Tannu-Ola Island Arc and the Tuva–Mongolian Microcontinent (Eastern Tuva)","authors":"S. Rudnev, I. Karmysheva, D. Semenova, V. Yakovlev, A. M. Sugorakova","doi":"10.2113/rgg20234527","DOIUrl":"https://doi.org/10.2113/rgg20234527","url":null,"abstract":"\u0000 ––We present the results of study of the geologic structure, petrologic composition, and age of plagiogranitoid associations in the east of the Kaa-Khem batholith (Eastern Tuva). The batholith is located in the junction zone of the Tannu-Ola island arc (TIA) of Vendian–early Cambrian age and the Precambrian rocks of the Tuva–Mongolian microcontinent (TMM). Plagiogranitoids of this region formed in an accretion–collision setting in the period 490–450 Ma. Three stages of formation of plagiogranitoid associations have been established (~489, ~476, and ~450 Ma). The plagiogranitoid associations in the east of the Kaa-Khem batholith do not differ in petrologic composition and age from the plagiogranitoid associations (500–450 Ma) in the west. Xenogenic zircons in the studied plagiogranitoids of the eastern Kaa-Khem batholith have ages of 2335–517 Ma. Their ages are divided into several clusters (524–517, 549–536, 615–586, 684–647, 739–735, 810–794, 842–827, and 2335 Ma) reflecting the heterogeneity of the crust in the TIA–TMM junction zone. The wide range of ages and the abundance of xenogenic zircons in plagiogranitoids of the eastern Kaa-Khem batholith testify to the contribution of older crustal sources to the granite formation at all stages of accretion–collision processes (from 490 to 450 Ma). The much narrower age range of xenogenic zircon (616–474 Ma) and its low contents in coeval plagiogranitoids of the western Kaa-Khem batholith are consistent with their localization within the TIA and the relative homogeneity of the crust in the area of felsic-melt generation. In the west, the influence of older crustal sources was insignificant and manifested itself only at the final stage (~450 Ma) of accretion–collision processes.","PeriodicalId":49587,"journal":{"name":"Russian Geology and Geophysics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46566201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}