Solid Earth Sciences最新文献

{"title":"Quantifying Mg–Al cation distribution in MgAl2O4-spinel using Raman spectroscopy: An experimental calibration","authors":"Yunlu Ma ,&nbsp;Xinjian Bao ,&nbsp;Zhaoyang Sui ,&nbsp;Xuwei Zhao ,&nbsp;Xi Liu","doi":"10.1016/j.sesci.2021.09.002","DOIUrl":"10.1016/j.sesci.2021.09.002","url":null,"abstract":"<div><p>Raman spectroscopy, an ideal technique to quantify the Mg–Al cation distribution on the tetrahedral T-sites and octahedral M-sites of MgAl₂O₄-spinel, was not calibrated before. By performing 16 annealing experiments on some MgAl₂O₄-spinel crystal plates at <em>P</em> from 1 atm to 5.0 GPa and <em>T</em> from 823 to 1873 K, a series of samples with different magnitudes of cation disorder (characterized by the inversion parameter <em>x</em>, i.e., the molar fraction of Al cations on the T-sites) have been generated. Single-crystal X-ray diffraction analyses have been performed to all these samples, and found the <em>x</em> values varying from 0.146 (15) to 0.362 (17). Multiple Raman spectra have been collected and analyzed for every sample. The Raman results show that the Raman scattering capabilities of the Al cations and the Mg cations on the T-sites are different, and their ratios are dependent on the Mg–Al cation distributions (i.e., <em>x</em>). With our extensive single-crystal X-ray diffraction data and Raman data, correlations between the <em>x</em> values and the relative Raman intensities of the ∼766 and ∼722 cm⁻¹ peaks (<em>I</em>_∼766/<em>I</em>_∼722 ratio), respectively caused by the internal vibrational modes of the MgO₄ and AlO₄ groups, have been established: the equations are <em>x</em> = 0.121 × log₁₀²(<em>I</em>_∼766/<em>I</em>_∼722) − 0.344 × log₁₀(<em>I</em>_∼766/<em>I</em>_∼722) + 0.392 (R² = 0.927; Raman peak height data used) and <em>x</em> = 0.069 × log₁₀²(<em>I</em>_∼766/<em>I</em>_∼722) − 0.253 × log₁₀(<em>I</em>_∼766/<em>I</em>_∼722) + 0.379 (R² = 0.928; Raman peak area data used). With this calibration, Raman spectroscopy can now be conveniently used to determine the <em>x</em> values of the MgAl₂O₄-spinel of different geological origins, significantly facilitating the inference of the thermal history of relevant geological bodies.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 60-71"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000404/pdfft?md5=a5cd015cc3855f39b8ea15855eb5b341&pid=1-s2.0-S2451912X21000404-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46398008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lead isotope evolution during the multi-stage core formation","authors":"Tong Fang ,&nbsp;Jing Huang ,&nbsp;Robert E. Zartman","doi":"10.1016/j.sesci.2021.11.001","DOIUrl":"10.1016/j.sesci.2021.11.001","url":null,"abstract":"<div><p>The evolution of the U-Pb decay system is determined by their initial isotopic composition in the proto-Earth and the subsequent global differentiation. The differentiation is highly complicated because of large-scale evaporation and multi-stage core formation in Earth accretion. We statistically rebuild the accretional history of Earth using a series of N-body simulations. This provides us with an estimation of the amount of silicate melting and thus temperature and pressure at the bottom of the magma oceans driven by continuous planetesimal impacts. We further assumed different evolutionary paths of the redox state and found a reduced process from an oxidized state consistent with the current value of Pb content and μ value (²³⁸U/²⁰⁴Pb) in the bulk silicate Earth. Meanwhile, the fraction of the impactor's core that participates in the re-equilibration is around 0.2–0.7. Our model predicts the final μ value equals the observed value, 8.25, regardless of the minor contribution of the late veneer (0.2). The evolution of μ determines the growth rate of radiogenic Pb isotopes. The episodic increase of μ in multi-stage core formation accelerates the growth of radiogenic Pb isotopes (²⁰⁶Pb and ²⁰⁷Pb) and finally causes a slight deviation of the composition of Pb isotopes (²⁰⁶Pb/²⁰⁴Pb and ²⁰⁷Pb/²⁰⁴Pb) to the right of 4.567-Ga Earth Geochron. A multi-stage evolution model for U–Pb system can explain the modern terrestrial μ value, but has little influence on the puzzle of “the first Pb paradox”.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 50-59"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X2100043X/pdfft?md5=f2500710608402eb8497771481f184fe&pid=1-s2.0-S2451912X2100043X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46028598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochemical studies of shales from the Asu River Group, Lower Benue Trough: Implications for provenance and paleo-environment reconstruction","authors":"Anthony Temidayo Bolarinwa ,&nbsp;Olufemi Faloye ,&nbsp;Sunday Ojochogwu Idakwo","doi":"10.1016/j.sesci.2021.12.002","DOIUrl":"10.1016/j.sesci.2021.12.002","url":null,"abstract":"<div><p>Combined use of trace elements, rare earth elements (REEs) with hydrogen (<em>δ</em>H) and oxygen (δ¹⁸O) stable isotope composition to elucidate origin and paleo-environment-conditions and reconstruction is a contemporary trend in the field of geochemistry. Geochemical investigations were carried out on the shale deposit from five wells within the Asu River Group Formation, exposed at Ikwo, Lower Benue Trough (LBT). Results of trace elements for the shale deposits examined showed averages of Co (19.10 ppm), Th (16.50 ppm), Zn (103.73 ppm), Sr (203.71 ppm) and Zr (292.80 ppm) compared to PAAS and UCC. Observed negative Eu anomalies, enriched LREEs and depleted HREEs patterns have shown that the shales are from rocks of continental origin. This is provided by Al/(Al + Fe + Mn) with a value &gt; 0.2. Plots of Zr/Sc vs Th/Sc, La/Th vs. Hf and Cr/V vs. Y/Ni indicated felsic igneous rock precursors for the shale samples. C-parameter, ratios of Rb/Sr and Sr/Cu signify paleo-climatic conditions of semi-humid to arid, Ba/Al showed low paleo-productivity of the basin during shale deposition, largely within the freshwater setting according to the ratio of Sr/Ba. V/(V + Ni), U/Th, Ni/Co ratios and Ce/Ce∗ anomalies have revealed an oxic depositional environment with Fe/Ti &gt; 20 suggesting hydrothermal activity. The temperature of formation (120 °C–∼195 °C) coupled with δ¹⁸O (+17 to + 23‰) and <em>δ</em>H (−46.90 to −38.80‰) is consistent with materials of sedimentary origin from chemically weathered felsic precursors under humid climatic conditions with an influence of hydrothermal activity.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 5-18"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000568/pdfft?md5=67810870800022b655ad58cde8196a1e&pid=1-s2.0-S2451912X21000568-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46022842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochronology and geochemistry of the Late Jurassic Wujiaping Sn deposit, Dayishan ore field, South China: Implications to the petrogenesis and Sn mineralization","authors":"Youyue Lu ,&nbsp;Jianfeng Li ,&nbsp;Jingya Cao ,&nbsp;Jianming Fu ,&nbsp;Shunbo Cheng ,&nbsp;Zhengwei Qin ,&nbsp;Liyan Ma ,&nbsp;Jingping Feng ,&nbsp;Zunzun Zhang ,&nbsp;Xiqing Chen","doi":"10.1016/j.sesci.2021.06.003","DOIUrl":"10.1016/j.sesci.2021.06.003","url":null,"abstract":"<div><p>The Wujiaping Sn deposit is located at the northern Dayishan ore field, South China, whose ore veins are mainly hosted in the Dayishan pluton. LA–ICP–MS zircon U–Pb dating for the medium-fine grained- and medium-coarse grained-biotite monzogranite of Dayishan pluton yields emplacement ages of 154.5 ± 1.6 Ma (MSWD = 2.0) and 155.5 ± 0.5 Ma (MSWD = 1.9), respectively, which are consistent with the muscovite ⁴⁰Ar-³⁹Ar plateau age of 150.4 ± 0.9 Ma for the quartz vein type ore veins. It is indicated that the Sn mineralization in the Wujiaping deposit is related to the Late Jurassic granitic magmatism. These granites show the geochemical features of highly fractionated S-type granite: 1) low Zr + Nb + Ce + Y contents (&lt;209 ppm); 2) high A/CNK ratios (&gt;1.1); 3) low crystallization temperature (mean = 688 °C); 4) high Rb/Sr ratios (mostly &gt; 48); 5) high differentiation index (DI &gt; 90); and 6) low CaO, P₂O₅, Sr, and Eu contents. Whole rocks isotopes show that these granites shows variable initial ⁸⁷Sr/⁸⁶Sr ratios (0.70251–0.71208), negative ε_Nd(t) values (−7.94–5.62) and old two stage Nd model ages of 1491–1563 Ma. LA–MC–ICP–MS zircon Lu–Hf isotopes show that the medium-fine-grained monzogranite have positive ε_Hf(t) values of 0.37–8.5 and two stage Hf model ages of 662–1180 Ma, whereas the medium-coarse grained-biotite monzogranite have negative ε_Hf(t) values of −6.42–3.55 and two stage Hf model ages of 1431–1599 Ma. It is proposed of that these granites are originated from melts mixed by crustal- and mantle-constituents and are formed in an extensional setting caused by the subduction of the Palaeo-pacific plate. The low Log<em>f</em>O₂ values calculated through zircons (−21.2–13.1) and high F contents (3630–5120 ppm) indicate the granites derived from reduced and F-rich melts. Therefore, the reduced melt is highly fractionated and enriched in Sn and F, resulting in the large scale Sn mineralization in the Dayishan ore field.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 72-86"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.sesci.2021.06.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44654719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How will volcanic ash from the Tonga volcano eruption perturbate marine carbon cycle?","authors":"Xiaole Sun,&nbsp;Weidong Sun","doi":"10.1016/j.sesci.2022.01.001","DOIUrl":"10.1016/j.sesci.2022.01.001","url":null,"abstract":"","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 1-4"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X22000010/pdfft?md5=543d3d426f11e2b45d809368d9a6f085&pid=1-s2.0-S2451912X22000010-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42429336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transformation between the Dabie Orogenic Belt and the Tan-Lu Fault zone: Insights from ENE-NE-trending gneiss belts at the tectonic node","authors":"Wei Wang ,&nbsp;Chuan-Zhong Song ,&nbsp;Hai-Long Li ,&nbsp;Jia-Hao Li ,&nbsp;Zhen-Wei Li ,&nbsp;Fang Yuan ,&nbsp;Ming-Xing Ling","doi":"10.1016/j.sesci.2021.11.005","DOIUrl":"10.1016/j.sesci.2021.11.005","url":null,"abstract":"<div><p>How the Dabie Orogenic Belt (DOB) and the Tan-Lu Fault Zone (TLFZ) transformed during the early Indosinian period is the key to reveal the convergence process between the North China Block (NCB) and the South China Block (SCB). Tongcheng area in the eastern margin of northern DOB is the tectonic node that connects the WNW-trending DOB and the NE-trending TLFZ. The typical ENE-NE-trending gneiss belts penetrably developed in Tongcheng area provide an ideal natural lab to decipher the transformation between the DOB and the TLFZ. Here we conduct an integrated structural and geochronological research on the ENE-NE-trending gneiss. Zircon U–Pb dating on the ENE-NE-trending gneiss yielded metamorphic ages ranging from 255 ± 9 Ma to 203 ± 10 Ma. The weakly deformed veins which intruded the surrounding gneiss yielded two groups of ages, 825 ± 29 Ma to 713 ± 7 Ma and 125 ± 2.6 Ma (weighted mean age), which indicate the protolith age of surrounding rocks and the intrusive timing of the vein, respectively. Integrated structural, microstructural and kinematic analysis indicate that no lateral structural superposed on the gneiss or veins. Therefore, it can be speculated that the deformation and metamorphism of the gneiss should simultaneously formed during the Early Triassic, as a result of continuous tearing from the DOB to the northeastern Sulu Orogenic Belt (SOB) during subduction of the Yangtze block beneath the NCB. Formation of the tearing belts, i.e., the ENE-NE-trending gneiss belts, accomplished the tectonic transformation between the DOB and the TLFZ. They could be regarded as an embryonic form of the TLFZ, which are also apparently different from the TLFZ by characteristics of non-strike slipping.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 38-49"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000532/pdfft?md5=41a4e5ab74bda2b0e28c7c1e12c9b45c&pid=1-s2.0-S2451912X21000532-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46838724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First discovery of highly fractionated tourmaline-bearing leucogranite-pegmatite in Duxiushan, Anqing ore-cluster region, middle and lower Yangtze metallogenic belt: A clue to strategic metal exploration","authors":"Zhuang Zhao ,&nbsp;Xiaoyong Yang ,&nbsp;Beicai Zhang ,&nbsp;Dongqing Wang ,&nbsp;Jiancheng Xie ,&nbsp;Tuyan Zhang ,&nbsp;Wanying Li","doi":"10.1016/j.sesci.2021.12.001","DOIUrl":"10.1016/j.sesci.2021.12.001","url":null,"abstract":"<div><p>A suite of highly fractionated granites and associated pegmatite, were revealed through drill hole in the Anqing ore-cluster region in the Lower Yangtze River Belt (MLRB), Eastern China, for the first time. The pegmatite has abundant tourmaline. This discovery provides new clues for the prospection of boron and rare metals in this region.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 19-22"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000556/pdfft?md5=c3264b3cc7531fe0b08afe67961a9ac5&pid=1-s2.0-S2451912X21000556-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43598966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical modeling of mineralizing processes during the formation of the Yangzhuang Kiruna-type iron deposit, Middle and Lower Yangtze River Metallogenic Belt, China: Implications for the genesis and longevity of Kiruna-type iron oxide-apatite systems","authors":"Xunyu Hu ,&nbsp;Simon Jowitt ,&nbsp;Feng Yuan ,&nbsp;Guangxian Liu ,&nbsp;Jinhui Luo ,&nbsp;Yuhua Chen ,&nbsp;Hui Yang ,&nbsp;Keyue Ren ,&nbsp;Yongguo Yang","doi":"10.1016/j.sesci.2021.11.006","DOIUrl":"10.1016/j.sesci.2021.11.006","url":null,"abstract":"<div><p>The Yangzhuang iron deposit is a Kiruna-type iron oxide-apatite (IOA) deposit within the Ningwu mining district of the Middle and Lower Yangtze River Metallogenic Belt (MLYRMB), China. This study applies a numerical modeling approach to identify the key processes associated with the formation of the deposit that cannot be easily identified using traditional analytical approaches, including the duration of the mineralizing process and the genesis of iron orebodies within intrusions associated with the deposit. This approach highlights the practical value of numerical modeling in quantitatively analyzing mineralizing processes during the formation of mineral deposits and assesses how these methods can be used in future geological research. Our numerical model links heat transfer, pressure, fluid flow, chemical reactions, and the movement of ore-forming material. Results show that temperature anomaly and structure (occurrence of the contact of intrusion and the Triassic Xujiashan group) are two key factors controlling the formation of the Yangzhuang deposit. This modeling also indicates that the formation of the Yangzhuang deposit only took some 8000 years, a reaction that is likely to be controlled by temperature and diffusion rates within the system. The dynamic changes of temperature and the distribution of mineralization also indicate that the orebodies located inside the intrusions most likely formed after magma ascent rather than representing blocks of existing mineralization that descended into the magma as a result of stoping or other similar processes. All these data form the basis for future research into the forming processes of Kiruna-type IOA systems as well as magmatic–hydrothermal systems more broadly, including providing useful insights for future exploration for these systems. The simulation approach used in this study has several limitations, such as oversimplified chemical reactions, uncertainty of pre-metallogenic conditions and limitation of 2D model. Future development into both theories and methods will definitely improve the practical significance of numerical simulation of ore-forming processes and provide quantitative results for more geological issues.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"7 1","pages":"Pages 23-37"},"PeriodicalIF":2.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000544/pdfft?md5=553bc9b838c4d6a3d1e6f22c2d53de60&pid=1-s2.0-S2451912X21000544-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46773816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geochronology and geochemistry of Middle Permian tuff in Chaohu region, China: Implications for their origin and geological significance","authors":"Likai Ge,&nbsp;Jiancheng Xie,&nbsp;Quanzhong Li,&nbsp;Jun Yan","doi":"10.1016/j.sesci.2021.09.001","DOIUrl":"10.1016/j.sesci.2021.09.001","url":null,"abstract":"<div><p>Tuff of Middle Permian as a record of volcanic activity are widely distributed in the northern hemisphere, such as South China, but origin of the tuff bed remains unclear. Stratigraphy, geochronology, geochemistry, and zircon Hf isotopic composition of the tuff layers from Gufeng Formation in Chaohu region, South China, are systemically investigated to reveal the origin of the tuff. The stratigraphical investigation and geochronological dating reveal that zircon U–Pb age of 271.6 ± 3.1 Ma for lower tuff layer is identical to the formation age (272 Ma) of the bottom boundary in the Gufeng Formation, while the zircon U–Pb age of 263.6 ± 3.8 Ma for upper tuff layer represents the boundary age between the lower and upper Gufeng Formation. The tuff with a lot of clastic materials has high Th/Ce (0.18–0.84) and Th/La (0.29–1.23) ratios, enrichment in LREE, Th, U and Hf, and depletion in Ba, Nb and Sr, with obviously negative Eu anomalies (δEu = 0.41–0.58). Compared with the lower tuff layer, the upper tuff layer has higher zircon εHf (t) values (−5.65 to 10.2) and lg fO₂ values (−14.6 to −7.42). The distinctly chemical and isotopic results indicate that the intermediate-felsic tuff in the Chaohu region were originated from more crustal materials in early stage of the Gufeng Formation and increased juvenile crustal materials and higher oxygen fugacity in late stage of the Gufeng Formation.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"6 4","pages":"Pages 354-366"},"PeriodicalIF":2.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000386/pdfft?md5=28733a5e1676b6317738d1d796cb90d4&pid=1-s2.0-S2451912X21000386-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46378893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A discovery of extremely REE-rich kimberlites: A possible new type of REE-deposit","authors":"Qi Hou ,&nbsp;Xiaoyong Yang ,&nbsp;Jun Tang ,&nbsp;Yisu Ren ,&nbsp;Qizhong Zhou ,&nbsp;Jianbin Shi","doi":"10.1016/j.sesci.2021.08.002","DOIUrl":"10.1016/j.sesci.2021.08.002","url":null,"abstract":"<div><p>Two newly discovered Mesozoic Group II kimberlites in the southeastern margin of North China Craton show extremely high ΣREE contents (ranging from 1046 to 1869 ppm), which also higher than the nearby Weishan carbonatite and other REE-bearing rocks in China. We proposed that the possible of a new type of REE-deposit, and there is a wide range of potential prospecting area of the REE deposit in the southeast margin of NCC.</p></div>","PeriodicalId":54172,"journal":{"name":"Solid Earth Sciences","volume":"6 4","pages":"Pages 367-369"},"PeriodicalIF":2.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451912X21000374/pdfft?md5=3bcd90d8acc99fa3e4f86edd70fc8114&pid=1-s2.0-S2451912X21000374-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42209851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}