Mineralogy and Petrology最新文献

{"title":"Correction to: Water and diamond inventory in cratonic eclogite and pyroxenite xenoliths from the Sask and Superior Cratons linked to tectonomagmatic craton reactivation","authors":"Rondi M. Davies, Sonja Aulbach, Thomas Stachel","doi":"10.1007/s00710-025-00956-8","DOIUrl":"10.1007/s00710-025-00956-8","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"687 - 689"},"PeriodicalIF":1.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166319","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":"Selected papers of the 12th International Kimberlite Conference","authors":"Thomas Stachel, D. Graham Pearson, Sonja Aulbach, Barrett Elliott, Geoffrey H. Howarth, Kelly R. Russell, Karen V. Smit, Lutz Nasdala","doi":"10.1007/s00710-025-00951-z","DOIUrl":"10.1007/s00710-025-00951-z","url":null,"abstract":"","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"289 - 291"},"PeriodicalIF":1.1,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170909","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":"Effects of melt depletion and metasomatism on the heat generation in the continental lithospheric mantle below Jagersfontein, South Africa","authors":"Diego I. Toro Vivanco,&nbsp;Jörg Hermann,&nbsp;Philip E. Janney,&nbsp;Suzette Timmerman","doi":"10.1007/s00710-025-00945-x","DOIUrl":"10.1007/s00710-025-00945-x","url":null,"abstract":"<div><p>Present-day continental lithospheric mantle (CLM) heat production estimates vary considerably and likely overestimate heat generation due to the infiltration of the host magma (i.e., kimberlite), mantle metasomatism or variable heat-producing element (HPE) ratios. We present estimates of heat production in the CLM beneath Jagersfontein, from bulk rock reconstruction of 11 peridotitic xenoliths based on in-situ analyses of primary mineralogy, to avoid kimberlite contamination. Higher concentrations of Th and U are observed in the reconstructed bulk rocks at shallower depths (&lt; 5 GPa) and decrease towards the deepest parts of the CLM (Th: 0.5–26 versus 1–5 ppb; U: 0.4–19 versus 1–3 ppb). Moreover, the reconstructed samples have a broad range of bulk K/U (~ 70-16500) and Th/U ratios (~ 0.2–3.8), outside the expected range of the modern convecting mantle. A crucial factor is garnet, as it can control the U budget, has Th/U &lt; 1 and is present across the CLM in the garnet stability field. The differences of the CLM with the convecting mantle challenge the use of assumedly constant HPE ratios to calculate the heat production. Our estimates of present-day heat generation from reconstructed bulk data yield ~ 0.0002–0.008 µW/m³ at shallow depths, decreasing down to ~ 0.0005 µW/m³ near the lithosphere-asthenosphere boundary, lower than typical heat generation values used in most previous models. The variable heat production in the CLM derives from the metasomatism and re-fertilization near the base caused by rising asthenospheric melts, which react and fractionate as they ascend, potentially carrying most of the HPE in a fluid phase to shallower depths.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"691 - 714"},"PeriodicalIF":1.1,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00710-025-00945-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167609","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":"Trace element and Sr-Nd-Pb isotope compositions of diamond-forming fluids in Voorspoed diamonds","authors":"Yael Kempe,&nbsp;Janne M. Koornneef,&nbsp;Gareth R. Davies,&nbsp;Ofir Tirosh,&nbsp;Ingrid. L. Chinn,&nbsp;Yaakov Weiss","doi":"10.1007/s00710-025-00940-2","DOIUrl":"10.1007/s00710-025-00940-2","url":null,"abstract":"<div><p>Trace element and Sr-Nd-Pb isotope compositions of high-density fluids (HDFs) trapped in diamonds provide key insights into mantle processes and diamond formation. This study focuses on diamonds containing different HDF types from the Voorspoed carbonate-rich olivine lamproite (CROL) in the Kroonstad cluster, South Africa. Their trace elements reveal signatures varying between primitive mantle-normalized incompatible enriched fractionated patterns mostly characterizing saline HDFs, and overall flatter patterns for silicic-carbonatitic compositions. The HDFs Sr-Nd-Pb isotope compositions vary markedly; ⁸⁷Sr/⁸⁶Sr = 0.70647–0.71556, ¹⁴³Nd/¹⁴⁴Nd = 0.5113–0.5122, ²⁰⁶Pb/²⁰⁴Pb = 17.36–18.77, ²⁰⁷Pb/²⁰⁴Pb = 15.41–15.71 and ²⁰⁸Pb/²⁰⁴Pb = 37.47–39.39. A Rb–Sr age of 780 ± 220 Ma recorded by the saline HDFs does not correspond with the timing of their host diamonds formation (~ 160–220 Ma; based on nitrogen aggregation estimates). The age records an earlier metasomatic event associated with formation of the silicic-carbonatitic HDFs and diamond (~ 330–730 Ma; based on nitrogen aggregation estimates), that likely took place during the Pan-African Orogeny. We suggest that Neoproterozoic subduction-related saline fluids infiltrated different lithologies in the Kroonstad lithospheric mantle. Upon interaction with eclogite, melting occurred and diamonds crystallized, forming the older silicic-carbonatitic HDF-bearing diamonds with lower alkalis and La/Nb, Th/Nb, La/Sm ratios. Concurrently saline fluids that penetrated harzburgite had little interaction with the host rock and were stored as metasomes. These metasomes were locally re-melted during subsequent thermal event/s, potentially the Karoo flood basalt volcanism (~ 180 Ma), to form saline HDFs and their host diamonds. Later metasomatism that involved high-Mg carbonatitic HDFs was smaller in scale than the previous diamond-forming events and took place at &lt; 160 Ma (&lt; 30 Myr before the Voorspoed CROL erupted). The similarities in trace element and isotope compositions between Voorspoed HDFs and Kroonstad CROLs, support some degree of shared lithospheric origin or similar metasomatic processes that controlled their compositions.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"465 - 487"},"PeriodicalIF":1.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00710-025-00940-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167454","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 old are lherzolitic diamonds? Mesoproterozoic diamond formation in the root of the Sask craton","authors":"Sarah E. M. Milne,&nbsp;Suzette Timmerman,&nbsp;Kristina Kublik,&nbsp;Anetta Banas,&nbsp;Thomas Stachel,&nbsp;George Read,&nbsp;D. Graham Pearson","doi":"10.1007/s00710-025-00946-w","DOIUrl":"10.1007/s00710-025-00946-w","url":null,"abstract":"<div><p>Diamondiferous kimberlites of the Cretaceous Fort á la Corne (FalC) field erupted through the Sask craton. The Palaeoproterozoic age of its lithospheric mantle root provides an unconventional setting for a major diamond deposit. We report the first diamond formation ages for the Sask craton, using diamonds from the Star kimberlite. Sm-Nd dating of garnet and clinopyroxene inclusions of lherzolitic paragenesis yields an isochron of 1262 ± 37 Ma and an ɛNd_<i>i</i> value of -10.8 ± 1.2. The average initial ⁸⁷Sr/⁸⁶Sr at 1262 Ma is 0.70459 ± 0.00001. A single diamond-forming event is supported by the overall similar inclusion compositions (major and trace elements), host diamond carbon isotopic compositions, N-abundance and low N-aggregation states. A Monte Carlo mixing model to generate the initial Sr-Nd isotope compositions of the FalC diamond inclusion suite supports a scenario in which the diamond substrates acquired their geochemical characteristics through earlier infiltration of lithospheric lherzolite by variable amounts (8 to 10 wt%) of an incompatible element-enriched melt with isotopic characteristics resembling cratonic lamproite. We propose a model in which asthenosphere-derived melts produced during rifting or the Trans Hudson Orogeny formed a metasome in the deep Sask craton lithospheric root. This metasome evolved isotopically for ~ 0.6 to 0.8 Gyr, before being remobilized and refertilizing lherzolitic substrates, resulting also in diamond formation. Diamond formation was associated with minimal thermal disturbance, during mobilization of fluids triggered by either far-field effects from the Mackenzie dyke swarm (~ 1270 Ma) or the Grenville orogeny (1.3–0.9 Ga).</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"365 - 377"},"PeriodicalIF":1.1,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164380","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":"A fresh look at the physicochemical evolution of the lithospheric mantle beneath the Dharwar craton (India)","authors":"Jiten Pattnaik,&nbsp;Sonja Aulbach,&nbsp;Sujoy Ghosh,&nbsp;E. V. S. S. K. Babu,&nbsp;Fanus Viljoen,&nbsp;Robert Bolhar","doi":"10.1007/s00710-025-00943-z","DOIUrl":"10.1007/s00710-025-00943-z","url":null,"abstract":"<div><p>The physicochemical evolution of cratonic lithosphere reflects the impacts of tectonomagmatic processes over its lifetime that may be deciphered using kimberlite-borne xenoliths and xenocrysts, but remain poorly constrained for the Indian Dharwar craton, owing to the dearth of fresh mantle material. This study examines detailed petrography and geochemical composition of six eclogite xenoliths, and additional eclogitic and peridotitic garnet separates, from the Wajrakarur kimberlites in the Eastern Dharwar Craton (EDC). Clinopyroxene in eclogite xenoliths is too altered to permit contamination-free sampling during laser ablation for trace element analysis. We overcome this limitation by exploiting relationships of clinopyroxene-garnet distribution coefficients with garnet Ca#, clinopyroxene jadeite content, and temperature. This allows a more accurate delineation of their petrogenesis from reconstructed bulk rocks and indicates their origin from variably plagioclase-rich oceanic crustal protoliths, with weak subsequent metasomatic overprint. In contrast, estimates of Fe³⁺ in garnet from peridotite xenoliths indicate an oxygen fugacity shift towards more oxidized conditions beneath the EDC linked to enrichment in melt-mobile elements (Ti, Zr) in the barren or weakly diamondiferous P1 and P3 kimberlites. The most depleted and reduced sample [Δlog<i>f</i>O₂ (FMQ) of -4.3; where FMQ corresponds to the fayalite-quartz-magnetite buffer] derives from diamondiferous kimberlite P7, suggesting oxidative melt metasomatism as a key control on the regional diamond inventory, although more data are needed. EDC eclogites and peridotites have estimated P-wave velocities of 8.46–8.63 km/s and 8.21–8.22 km/s, respectively, which are lower than present-day observed bulk P-wave velocities, and may point to lithological or thermal changes since Mesoproterozoic entrainment.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"715 - 741"},"PeriodicalIF":1.1,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00710-025-00943-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163281","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":"Diamonds from Fort à la Corne – post-Archean formation in exceptionally cool and fertile lherzolitic substrates","authors":"Anetta Banas,&nbsp;Sarah E. M. Milne,&nbsp;Thomas Stachel,&nbsp;Richard A. Stern,&nbsp;D. Graham Pearson,&nbsp;George H. Read","doi":"10.1007/s00710-025-00900-w","DOIUrl":"10.1007/s00710-025-00900-w","url":null,"abstract":"<div><p>Diamonds from the Star kimberlite at Fort à la Corne formed in an unusual substrate: 94% of inclusion-bearing diamonds derive from refertilized cratonic lherzolites, with olivine Mg# [molar 100 Mg/(Mg + Fe)] centered around a mode at 88.7. In addition, there is a minor eclogitic suite (6%) and a single sublithospheric diamond is most likely linked to oceanic crust subducted into the lower mantle. In addition to low Mg#, the refertilized lherzolitic association is characterized by low Ni contents, elevated V and Ti at normal Na contents, garnet rare earth element patterns very similar to primitive mantle garnet, and positive Nb anomalies. These characteristics are best explained by refertilization through a kimberlitic low degree partial melt. Single clinopyroxene-based geothermobarometry for inclusions in diamond and kimberlite-derived concentrate yields identical cold geotherms (equivalent to ~ 37 mW/m² surface heat flow), which implies that diamond formation occurred in a steady state thermal environment that did not change measurably from the time of diamond formation (1.26 Ga) to the time of kimberlite emplacement (0.10 Ga). Consequently, the refertilization event affecting the lherzolitic diamond substrates must have predated diamond formation. A further unique signature of the lherzolitic diamond association is its carbon isotope composition, with 97% of diamonds having δ¹³C values between − 18.0 and − 14.6‰. This constitutes the first observation of a peridotitic diamond suite dominated by subducted carbon, originating as organic matter or biogenic carbonates, instead of mantle-like carbon.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"343 - 364"},"PeriodicalIF":1.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160916","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":"Three columbite-group minerals from Ratnapura, Sri Lanka","authors":"K. A. Geeth Sameera,&nbsp;Chutimun Chanmuang N.,&nbsp;Radek Škoda,&nbsp;Manfred Wildner,&nbsp;Lutz Nasdala","doi":"10.1007/s00710-025-00936-y","DOIUrl":"10.1007/s00710-025-00936-y","url":null,"abstract":"<div>\u0000 \u0000 <p>Three oxide minerals belonging to the columbite group, including columbite–(Mn) (MnNb₂O₆), columbite–(Fe) (FeNb₂O₆), and fersmite (CaNb₂O₆), were found in specimens from gem placers in Ratnapura district, Sri Lanka. We present results of chemical, structural and spectroscopic analyses, including the first Raman spectrum for natural fersmite. For columbite–(Mn) and columbite–(Fe), analytical results obtained before and after dry annealing in air indicate low degrees of accumulated self-irradiation damage, which corresponds well with low actinide concentrations.</p>\u0000 </div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 2","pages":"279 - 287"},"PeriodicalIF":1.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00710-025-00936-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142141","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":"High-density fluids in diamonds from No. 50 kimberlite pipe, Wafangdian, China: the connection to kimberlites","authors":"Reed B. Mershon,&nbsp;Oded Navon,&nbsp;Jeffrey W. Harris,&nbsp;Yaakov Weiss","doi":"10.1007/s00710-025-00931-3","DOIUrl":"10.1007/s00710-025-00931-3","url":null,"abstract":"<div><p>We report the major and trace element composition of high-density fluids (HDFs) trapped in microinclusions in 14 diamonds from Wafangdian, Liaoning, China. This is the first detailed report of the major and trace elements of HDFs from the North China Craton. The trapped fluids are similar to those known from other localities, except for one with a unique Cl-K-Ba-Sr-rich composition that is also extremely enriched in Th and the light rare earth elements (REEs). One diamond contains a saline HDF of typical composition. The other twelve diamonds exhibit high-Mg carbonatitic HDFs with trace element patterns that resemble those of the Wafangdian kimberlites, but with higher concentrations. The nitrogen aggregation level of all the diamonds is similar, with 6–37% of the nitrogen residing in B centers, suggesting mantle residence temperatures of 1100–1200 ºC. Comparing the composition of the carbonatitic HDFs to available experimental data on melting of carbonated peridotite, we show that they can be produced by a very low degree of partial melting (&lt; 0.1%) of mantle peridotite. In an oxidized environment, such melts are stable in most of the lithospheric mantle and the main barrier for their existence is the reduced nature of the lithosphere. With increasing temperature, the experimental melts evolve towards kimberlites. The similar trace element patterns of the HDFs and their host kimberlite also suggest derivation from similar sources. Still, the difference in the formation temperatures means that the HDFs were trapped in the lithosphere, whereas kimberlite formation requires asthenospheric conditions. Crystallization of kimberlite at lithospheric levels face difficulties, but forming high-Mg carbonatitic melt at the top of the asthenosphere and its trapping in diamond after minimal crystallization in the lithosphere may solve them. More complex scenarios may be needed to explain the formation of both HDFs and kimberlites.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 3","pages":"489 - 511"},"PeriodicalIF":1.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00710-025-00931-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171765","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":"Geochemistry and tectonic evolution of Neoproterozoic Wadi Kid Dokhan volcanics, Southeast Sinai, Egypt","authors":"Hatem M. El-Desoky,&nbsp;Ahmed M. Abdel-Rahman,&nbsp;Wael Fahmy,&nbsp;Islam M. Alsayed,&nbsp;Hamada El-Awny,&nbsp;Ahmed E. Khalil,&nbsp;Ahmed Eraky","doi":"10.1007/s00710-025-00930-4","DOIUrl":"10.1007/s00710-025-00930-4","url":null,"abstract":"<div><p>The debate revolves around the tectonic setting and petrogenesis of the Neoproterozoic Dokhan volcanics in the Egyptian Shield (ca.610–560 Ma by whole rock Rb–Sr and ca. 600–590 Ma by sensitive high-resolution ion microprobe SHRIMP U–Pb zircon), which formed during the transition from convergent to extensional, possibly after the collision of east and west Gondwana. The Dokhan volcanics suite in Egypt is undisturbed and geographically connected to immature clastic deposits from the Hammamat molasse-type sediments. These volcanics consist of basic, intermediate, and acidic rocks. The basic and intermediate Dokhan volcanics are represented by basalts and andesites, which are less common, while the acidic Dokhan volcanics are represented by rhyodacites, which are considered the main rock units encountered in the studied area. The geochemical values reveal broad trends of decreasing concentrations of compatible elements with MgO, Fe₂O₃, FeO, MnO, CaO, Co, Sr, and Zn, as well as increasing amounts of incompatible contents (Al₂O₃ and Na₂O) with increasing SiO₂ content. These geochemical characteristics are shared by Dokhan volcanics and associated Hammamat clastic sediments from Sinai and the Eastern Desert of Egypt. The geochemical behavior of Wadi Kid Dokhan volcanics is characterized by both orogenic arc-type and anorogenic within-plate tectonic environments. The magma types of Dokhan volcanics tend to have metaluminous to peraluminous, medium- to high-K calc-alkaline affinities. Meanwhile, the basaltic rocks are of tholeiitic origin. The lava flow of the medium- to high-K calc-alkaline post-collisional Dokhan volcanics shows a tectonomagmatic transition between the calc-alkaline arc-related magmatism and the alkaline anorogenic magmatism. The Dokhan volcanics in Sinai that were the focus of the inquiry exhibit a broad, evolving compositional range (rhyolite-basalt). A typical rhyolitic composition with an average silica concentration (69.5–70.9 wt%), an average andesitic content (57.3–58.6 wt%), and an average basaltic content (47.8 wt%) is also present in the Dokhan volcanics from the Eastern Desert of Egypt.</p></div>","PeriodicalId":18547,"journal":{"name":"Mineralogy and Petrology","volume":"119 2","pages":"259 - 278"},"PeriodicalIF":1.1,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144684","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}