Acta Geochimica最新文献

{"title":"Geochemical characteristics and source analysis of rare earth elements in Qinghai Lake sediments","authors":"Guangying Li,&nbsp;Yingyi Meng,&nbsp;Jinhan Zhou,&nbsp;Di Ming,&nbsp;Lijun Dai,&nbsp;Lingqing Wang","doi":"10.1007/s11631-025-00763-0","DOIUrl":"10.1007/s11631-025-00763-0","url":null,"abstract":"<div><p>This study investigates the distribution, geochemical behavior, and potential anthropogenic influences of rare earth elements (REEs) in the surface sediments of Qinghai Lake, the largest saline lake in China. A total of 36 surface sediment samples were analyzed for REE concentrations with a combination of self-organizing maps (SOM) and positive matrix factorization (PMF). Results indicate distinct enrichment patterns, with light REEs (LREEs) exhibiting higher concentrations than heavy REEs (HREEs), reflecting natural abundances and geochemical behaviors. The minimum value was found in Lu as low as 0.091 mg/kg, and the maximum concentration was exhibited in Ce at 78.877 mg/kg. Geoaccumulation index (<i>I</i>_geo) analysis reveals minor to moderate enrichment of specific REEs of Sm and Nd, suggesting possible localized anthropogenic inputs, particularly near river mouths. Spatial analysis using inverse distance weighting (IDW) and self-organizing maps (SOM) highlights significant correlations between REE distributions and riverine inputs, underscoring fluvial transport's role in sedimentary REE dynamics. PMF identifies mixed natural and anthropogenic sources, with agricultural and industrial activities contributing to elevated REE levels in sediment. These findings provide critical insights into the geochemical behavior of REEs in saline lake systems and offer a foundation for pollution control and sustainable resource management in sensitive environments like Qinghai Lake.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"231 - 246"},"PeriodicalIF":1.4,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749054","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":"Geochemical behaviors of metal elements during a single flood event in the natural Chishui River, Southwest China","authors":"Zhongxuan Liang,&nbsp;Keyi Wang,&nbsp;Hongming Cai,&nbsp;Zhongwei Wang,&nbsp;Wei Yuan,&nbsp;Jiubin Chen","doi":"10.1007/s11631-025-00762-1","DOIUrl":"10.1007/s11631-025-00762-1","url":null,"abstract":"<div><p>The majority (up to 90%) of riverine materials is transported from the continent to the ocean mainly in flood events. It is thus crucial to characterize the geochemistry of elements and their flux in river system in order to better constrain their global biogeochemical cycling and impact on the oceanic ecosystem. However, the geochemical behavior including the distribution, migration and partitioning of typical metal elements amongst different phases, during hydrodynamic flood event remains still to be well explored. Here, we investigated the geochemical behaviors of typical metal elements in dissolved phase and suspended particulate matter collected from a single flood event in the natural Chishui River, Southwest China. The results showed clearly that the geochemistry of metal elements was largely controlled by the hydrodynamic effect, of which the different flowrates introduce a natural sorting of different mineral particles transported at different flood stages, depending on their shape, size and density. The maximum concentrations of alkaline and alkaline earth metals (Li, Mg, K, Rb and Sr) in SPM appeared before the flood peak, which was largely controlled by aluminosilicate minerals. However, transition metals (Cr, Mn, Fe, Ni and Cu) showed their abundance peaks lagging behind the flowrate summit, as a result of the late arrival of coarse particles or heavy minerals, evidenced by the mineralogical phase analysis. In addition, the distribution coefficient (<i>K</i>_<i>d</i>) between particulate and dissolved loads were lower and stable for soluble alkali/alkaline earth metals which could be affected by pH, while higher and fluctuant for transition metals that were largely influenced by SPM content. Overall, the present study reveals clear effects of hydrodynamic sorting on the geochemistry of metal elements during the flood event of the natural Chishui River, which should be taken into account when characterizing the riverine flux and their impact on marine ecosystem.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"373 - 386"},"PeriodicalIF":1.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749261","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":"Geochemistry and U–Pb geochronology of the granite porphyry in Bainiuchang, Southeastern Yunnan, China","authors":"Nan Shi,&nbsp;Jun Zhu,&nbsp;Xuelong Liu,&nbsp;Shitao Zhang,&nbsp;Guangzhi Meng,&nbsp;Hong Zhang,&nbsp;Jialong Cheng,&nbsp;Jiehu Zhou,&nbsp;Bode Lu,&nbsp;Junshan Dao,&nbsp;Xue Mi,&nbsp;Maohuang Fan","doi":"10.1007/s11631-024-00750-x","DOIUrl":"10.1007/s11631-024-00750-x","url":null,"abstract":"<div><p>The Bainiuchang Ag-polymetallic ore deposit, located in southeastern Yunnan, China, is one of the region’s largest deposits. However, the hypabyssal granite porphyry within this mining area has yet to be comprehensively investigated. In this study, we conducted geochemical, geochronological, whole-rock Sr–Nd isotope, and zircon Hf isotope analyses on granite porphyry samples collected from the Bainiuchang deposit. The results indicate that the granite porphyry formed between 87.5 and 87.4 Ma in the Late Yanshanian period. Geochemically, the granite is strongly peraluminous, with high silica and alkali contents consistent with S-type granite characteristics. The granite porphyry is enriched in large-ion lithophile elements (Rb, Th, U, and K) and is relatively depleted in Ba and Sr. The initial ⁸⁷Sr/⁸⁶Sr ratios are high (0.71392–0.71585), accompanied by low <i>ε</i>_Nd(<i>t</i>) values (− 8.9 to − 8.2). The zircons exhibited similarly low <i>ε</i>_Hf(<i>t</i>) values (− 9.31 to − 3.6). These data suggest that the porphyry-forming magma originated from a continental crustal source. The two-stage Hf and Nd model ages are estimated at 1534–1216 Ma and 1615–1561 Ma, respectively. Thus, the granite porphyry likely formed under a strike-slip extensional setting in the Late Yanshanian period and resulted from the re-melting of Proterozoic basement metagreywackes. This porphyry shares a similar magmatic origin with concealed granite bodies within the deposit and is associated with structural reactivation during the Yanshanian. The findings of this study provide valuable insights into the tectonomagmatic mineralization processes in the Bainiuchang area.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"325 - 347"},"PeriodicalIF":1.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749141","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":"Lithium-rich tourmaline in Himalayan leucogranite: An example from the Gabo Li-rich granite-pegmatite system, Xizang, China","authors":"Hongzhao Shi,&nbsp;Yiyun Wang,&nbsp;Linkui Zhang,&nbsp;Hong Liu,&nbsp;Weikang Guo,&nbsp;Jiangang Fu","doi":"10.1007/s11631-024-00753-8","DOIUrl":"10.1007/s11631-024-00753-8","url":null,"abstract":"<div><p>The Gabo lithium deposit represents a newly discovered pegmatite-type lithium deposit within the Himalayan metallogenic belt. The tourmaline-muscovite granite, the largest leucogranite in the mining area, displays a close spatial correlation with the Li-pegmatite veins. This study aims to examine the genesis of tourmaline and evaluate the significance and potential of pegmatite lithium deposits. Tourmaline is extensively distributed in tourmaline-muscovite granite at Gabo deposit in Luozha county (Xizang). Investigation of the compositional and in situ boron isotopes of the tourmaline revealed that the tourmalines mainly belong to the schorl group and exhibit uniform elevated Li–Sn contents and <i>δ</i>¹¹B values (− 11.6 ‰ to − 10.5‰). This indicates that the tourmaline mainly crystallized from a boron-rich granitic magma undergoing enrichment in elemental lithium during the tourmaline crystallization process. Compared with the principal rare metal leucogranite-pegmatites in the Himalayan orogen, it is proposed that the elevated lithium (Li) content of tourmaline serves as an effective mineral indicator for the highly evolved pegmatite-type rare metal deposits.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"297 - 313"},"PeriodicalIF":1.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749075","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":"Space weathering characteristics of lunar permanently shadowed regions soils: Evidence from experimental simulation","authors":"Zixuan Han,&nbsp;Yang Li,&nbsp;Chen Li,&nbsp;Ronghua Pang,&nbsp;Sizhe Zhao,&nbsp;Zhuang Guo,&nbsp;Kairui Tai,&nbsp;Rui Li,&nbsp;Zhenhao Hu,&nbsp;Li Liu","doi":"10.1007/s11631-024-00746-7","DOIUrl":"10.1007/s11631-024-00746-7","url":null,"abstract":"<div><p>Permanently shadowed regions (PSRs) on the Moon are potential reservoirs for water ice, making them hot spots for future lunar exploration. The water ice in PSRs would cause distinctive changes in space weathering there, in particular reduction-oxidation processes that differ from those in illuminated regions. To determine the characteristics of products formed during space weathering in PSRs, the lunar meteorite NWA 10203 with artificially added water was irradiated with a nanosecond laser to simulate a micrometeorite bombardment of lunar soil containing water ice. The TEM results of the water-incorporated sample showed distinct amorphous rims that exhibited irregular thickness, poor stratification, the appearance of bubbles, and a reduced number of npFe⁰. Additionally, EELS analysis showed the presence of ferric iron at the rim of the nanophase metallic iron particles (npFe⁰) in the amorphous rim with the involvement of water. The results suggest that water ice is another possible factor contributing to oxidation during micrometeorite bombardment on the lunar surface. In addition, it offers a reference for a new space weathering model that incorporates water in PSRs, which could be widespread on asteroids with volatiles.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 1","pages":"1 - 10"},"PeriodicalIF":1.4,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362212","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":"Chemical weathering in Manas River Basin: Driven by sulfuric acid or carbonic acid?","authors":"Jiaxin Zhang,&nbsp;Bingqi Zhu","doi":"10.1007/s11631-024-00737-8","DOIUrl":"10.1007/s11631-024-00737-8","url":null,"abstract":"<div><p>Carbonic acid produced by the dissolution of atmospheric and soil CO₂ in water is usually the most dominant catalyst for chemical weathering, but a sulfuric acid-driven phenomenon, different from usual, was found in the orogenic belt watersheds dominated by silicate bedrock. This study, rooted in comprehensive field investigations in the Manas River Basin (MRB) north of the Tianshan Mountains, delves into the mechanisms and impacts of sulfuric and carbonic acid as catalysts driving different types of chemical weathering in the Central Asian Orogenic Belt. Quantitative analyses elucidate that carbonate weathering constitutes 52.4% of the total chemical weathering, while silicate and evaporite account for 18.6% and 25.3%, respectively, with anthropogenic activities and atmospheric precipitation having little effect. The estimated total chemical weathering rate in MRB is approximately 0.075 × 10⁶ mol/km²/year. Quantitative findings further suggest that, preceding carbonate precipitation (&lt; 10⁴ year), chemical weathering can absorb CO₂. Subsequently, and following carbonate precipitation (10⁴–10⁷ year), it will release CO₂. The release significantly surpasses the global average CO₂ consumption, contributing to a noteworthy climate impact. This study underscores the distinctive weathering mechanisms, wherein sulfuric acid emerges as the predominant catalyst. The quantity of sulfuric acid as a catalyst is approximately three times that of carbonic acid. Sulfuric acid-driven carbonate rock weathering (SCW) is identified as the sole chemical weathering type with a net CO₂ release effect. SCW CO₂ release flux (5176 mol/km²/year) is roughly 2.5 times the CO₂ absorption by Ca–Mg silicate weathering, highlighting the pivotal role of chemical weathering in sourcing atmospheric CO₂ over the timescales of carbonate precipitation and sulfate reduction. Lastly, this study posits that catalyst and transport limitations are the most plausible critical factors in MRB. The interplay between sulfuric acid and dissolved CO₂ competitively shapes the types and rates of chemical weathering reactions.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 1","pages":"59 - 85"},"PeriodicalIF":1.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362174","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 discovery of Late Triassic hypabyssal mafic dykes in the Huozhou complex and their geological significance: Evidence from petrology, geochemistry, and geochronology","authors":"Haiyan Liu,&nbsp;Chong Peng","doi":"10.1007/s11631-024-00741-y","DOIUrl":"10.1007/s11631-024-00741-y","url":null,"abstract":"<div><p>The Huozhou complex in the Trans-North China Orogen exhibits two events of mafic magmatism (separated by ca. 700 Ma): Neoproterozoic (920 ± 15 Ma) Shimenyu diabase and Late Triassic (217 ± 2.5 Ma) Xingtangsi diabase. Investigations have focused on systematic petrology, zircon U-Pb dating, Lu-Hf isotopes, and lithogeochemistry. The research findings indicate that the Late Triassic Xingtangsi diabase of the Huozhou complex can be classified as a transitional type between intermediate and mafic rocks based on their SiO₂ content. This classification is supported by an average SiO₂ content of 53.94%, ranging from 53.33% to 54.28%. In the Zr/TiO₂ vs. Ce diagram, all samples lie within the range of basalt. The zircons from the Late Triassic Xingtangsi diabase have low ε_Hf(t) values ranging from –12.7 to –8.7, with an average of –11.1. Additionally, the single-stage model age T_DM1 is estimated to be between 1207 and 1701 Ma. These findings suggest that the magma responsible for the dyke originated from either partial melting or an enriched mantle source inside the Meso-Proterozoic lithospheric mantle. The elevated concentrations of Th (thorium) and LREEs (light rare earth elements), as well as the Th/Yb and Th/Nb ratios, suggest the potential incorporation of subducted sediments within the magma source region. The rock displays negative Nb, Ta, Zr, Hf, and Ti anomalies. These geochemical attributes align with the distinctive traits observed in volcanic rocks found within island arcs. The formation of the Late Triassic Xingtangsi diabase is likely associated with the geological context of an arc setting, which arises from the collision between the Yangtze plate and the North China Craton.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"43 6","pages":"1013 - 1036"},"PeriodicalIF":1.4,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664456","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":"Late-Silurian intraplate basalts from the southwestern margin of the Ordos Basin: Implication for decompression melting of metasomatized evolved mantle in extension setting","authors":"Dongxu Wang,&nbsp;Hujun Gong,&nbsp;Jiangfeng Qin,&nbsp;Fenhong Luo","doi":"10.1007/s11631-024-00723-0","DOIUrl":"10.1007/s11631-024-00723-0","url":null,"abstract":"<div><p>The Longshan orogenic belt is located in the southwestern margin of Ordos Basin at the junction zone between the Western Qinling and Northern Qilian orogenic belt. Voluminous Early Paleozoic magmatism in this area is of key significance for determining the Early Paleozoic tectonic evolution and deep crust-mantle structure. Previous studies mainly focused on the Paleozoic granites; the coeval mafic rocks in this area are still poorly understood. A set of Late Silurian intraplate tholeiitic basalts has been discovered in Longshan area, providing key evidence for the mantle source and deep geodynamic background in this area. The Late Silurian Angou basalt has similar geochemical features as intraplate tholeiitic basalt, with high Na₂O/K₂O ratios (5.22–8.25), enriched in large ion lithophile elements and LREE. In combination with their relatively evolved Sr-Nd isotopic composition [⁸⁷Sr/⁸⁶Sr (i) = 0.7128–0.7140; <i>ε</i>_Nd (t) =  − 5.55 to − 3.40], it is suggested that it originated from decompression melting of metasomatized enriched mantle in extensional setting. These results indicate that the mantle source in the junction zone of the West Qinling-North Qilian orogenic belt evolved from depleted to enriched with the continuation of Proto-Tethys subduction from the Cambrian to the Silurian. These results are of great significance to understanding the genesis of contemporaneous granite and the crust-mantle interaction in the junction zone between the Western Qinling and Northern Qilian orogenic belt.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"260 - 277"},"PeriodicalIF":1.4,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749236","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":"Correction: Alkaline igneous rocks, a potential source of rare metals and radioactive minerals: Case study at Amreit area, south Eastern Desert, Egypt","authors":"Baaha M. Emad","doi":"10.1007/s11631-024-00736-9","DOIUrl":"10.1007/s11631-024-00736-9","url":null,"abstract":"","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 1","pages":"215 - 216"},"PeriodicalIF":1.4,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361818","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":"Petrography and geochemical characterization of the Baïbokoum syenitic pluton (Southern Chad): Implication for the magma genesis","authors":"Gustave Baïssemia Ronang,&nbsp;Merlin Gountié Dedzo,&nbsp;Jules Tcheumenak Kouémo,&nbsp;Moussa Ngarena Klamadji,&nbsp;Diondoh Mbaguedjé,&nbsp;Maurice Kwékam","doi":"10.1007/s11631-024-00733-y","DOIUrl":"10.1007/s11631-024-00733-y","url":null,"abstract":"<div><p>The Baïbokoum syenitic pluton (BSP), located in southern Chad, to the NE of the Adamawa-Yadé domain, is one of the few strongly potassic magmatic bodies in the southern part of the Central African Fold Belt (CAFB) in Chad. It has been previously studied petrologically, but its petrogenesis has remained poorly known. Petrographic and whole-rock geochemical data presented in this article highlight their magma genesis and geodynamic evolution. The BSP consists of medium- to coarse-grained syenites associated with minor microdiorites, which occur as syn-plutonic dikes and mafic microgranular enclaves (MME) coarse- and medium-grained syenites outcrop respectively to the core and the border of the BSP. The syenite displays high-K and alkaline to trans-alkaline affinity. Petrographic and geochemical data suggest that medium- to coarse-grained syenites are from single magma source that evolved and differentiated by fractional crystallization in a magma reservoir. REE profiles show enriched LREEs (La_N/Yb_N = 6.19–45.55) while HREEs show an almost flat profile (Dy_N/Yb_N = 1.0–2.23), and the La/Sm and Sm/Yb ratios have led to propose that the aforementioned rocks derived from the partial melting of a garnet-spinel-lherzolite mantle source. Negative Nb and Ta anomalies indicate that this mantle source was modified by the addition of subduction-related material. Th/Yb ratios associated with high Ba/La ratios indicate that enrichment of the source could be related to slab-derived fluids. The parental magma of the BSP was generated by partial melting of the metasomatized lithospheric mantle that was modified into arc-magmatism material in a subduction setting. Its emplacement took place in two successive stages: a static stage of fractional crystallization and crystal settling in a deep magma source and a dynamic stage in a shear deformation setting during which stratified magma rises towards the upper crust, with evolved syenite magma being emplaced first and diorite later. The emplacement of the BSP was probably controlled by the evolution of the Tcholliré-Banyo Fault and M'Béré Shear Zone during the Pan-African orogeny.</p></div>","PeriodicalId":7151,"journal":{"name":"Acta Geochimica","volume":"44 2","pages":"420 - 439"},"PeriodicalIF":1.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749260","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}