Academic literature on the topic 'Kimberlito'
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Journal articles on the topic "Kimberlito"
Kargin, Alexey Vladimirovich, Anna Andreevna Nosova, Ludmila Vyacheslavovna Sazonova, Vladimir Vasilievich Tretyachenko, Yulia Olegovna Larionova, and Elena Vladimirovna Kovalchuk. "Ultramafic Alkaline Rocks of Kepino Cluster, Arkhangelsk, Russia: Different Evolution of Kimberlite Melts in Sills and Pipes." Minerals 11, no. 5 (May 19, 2021): 540. http://dx.doi.org/10.3390/min11050540.
Full textChaves, Mario Luiz de Sá C., Paulo Roberto Gomes Brandão, Antonio Carlos Girodo, and Leila Benitez. "Kimberlito Canastra-1 (São Roque de Minas, MG): geologia, mineralogia e reservas diamantíferas." Rem: Revista Escola de Minas 61, no. 3 (September 2008): 357–64. http://dx.doi.org/10.1590/s0370-44672008000300014.
Full textJones, T. J., J. K. Russell, L. A. Porritt, and R. J. Brown. "Morphology and surface features of olivine in kimberlite: implications for ascent processes." Solid Earth 5, no. 1 (May 16, 2014): 313–26. http://dx.doi.org/10.5194/se-5-313-2014.
Full textChen, Yunfeng, Yu Jeffrey Gu, Larry M. Heaman, Lei Wu, Erdinc Saygin, and Shu-Huei Hung. "Reconciling seismic structures and Late Cretaceous kimberlite magmatism in northern Alberta, Canada." Geology 48, no. 9 (May 29, 2020): 872–76. http://dx.doi.org/10.1130/g47163.1.
Full textEccles, D. Roy, Robert A. Creaser, Larry M. Heaman, and Jeff Ward. "Rb–Sr and U–Pb geochronology and setting of the Buffalo Head Hills kimberlite field, northern AlbertaThis article is one of a selection of papers published in this Special Issue on the theme Geology of northeastern British Columbia and northwestern Alberta: diamonds, shallow gas, gravel, and glaciers." Canadian Journal of Earth Sciences 45, no. 5 (May 2008): 513–29. http://dx.doi.org/10.1139/e07-050.
Full textKopylova, Maya G., and Patrick Hayman. "Petrology and textural classification of the Jericho kimberlite, northern Slave Province, Nunavut, Canada." Canadian Journal of Earth Sciences 45, no. 6 (June 2008): 701–23. http://dx.doi.org/10.1139/e08-011.
Full textChaves, Mario Luiz de Sá C. "Kimberlito vargem-1 (Coromandel, MG): bulk sample confirma mineralização diamantífera." Rem: Revista Escola de Minas 65, no. 4 (December 2012): 509–11. http://dx.doi.org/10.1590/s0370-44672012000400011.
Full textHeaman, Larry M., David Phillips, and Graham Pearson. "Dating Kimberlites: Methods and Emplacement Patterns Through Time." Elements 15, no. 6 (December 1, 2019): 399–404. http://dx.doi.org/10.2138/gselements.15.6.399.
Full textTukiainen, Tapani, and Leif Thorning. "Detection of kimberlitic rocks in West Greenland using airborne hyperspectral data: the HyperGreen 2002 project." Geological Survey of Denmark and Greenland (GEUS) Bulletin 7 (July 29, 2005): 69–72. http://dx.doi.org/10.34194/geusb.v7.4845.
Full textZurevinski, S. E., L. M. Heaman, R. A. Creaser, and P. Strand. "The Churchill kimberlite field, Nunavut, Canada: petrography, mineral chemistry, and geochronology." Canadian Journal of Earth Sciences 45, no. 9 (September 2008): 1039–59. http://dx.doi.org/10.1139/e08-052.
Full textDissertations / Theses on the topic "Kimberlito"
Costa, Vicente Sérgio. "Estudos mineralógicos e químicos do Kimberlito Batovi 6 (MT) em comparação com as intrusões Três Ranchos 4 (GO) e Limeira 1(MG)." [s.n.], 1996. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287190.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociências
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Resumo: As características texturais da intrusão Batovi 6 (MT), a sua composição mineralógica à base de olivina. granada, ilinenita, espinélio, flogopita e perovskita, e as suas assinaturas geoquímica e isotópica ('oNdf'"Nd = 0.512701; 87SrJl6Sr = 0.70440) indicam que essa rocha é uma brecha kimberlitica tufAcea de fácies diatrema. pertencente à classe dos kimberlitos do Grupo IA. Nessa rocha ocorrem granadas do tipo peridotitico de alta temperatura e pressão. Porém, alguns cristais de granada apresentam teores de Nap, ~03 e Si02 semelhantes aos de granada eclogítica inclusa em diamantes da mina kimberlitica de Monastery (África do Sul) e de depósitos alU onares da região de Juma. MT. Apesar das indicações de que o kimberlito Batovi 6 se fonnou no manto astenosférico fértil, as composições químicas de ilinenita e granada sugerem a ocorrência de condições oxidantes desfavoráveis à preservação dos diamantes. As intrusões Três Ranchos 4 e Limeira 1 apresentam características texturais de fácies bipoabissal e são classificadas como kimberlitos macrocrista1inos. Os resultados de análise química de minerais indicadores (olivina e cromita) da intrusão Três Ranchos 4 associados às estimativas anteriores de temperatura e pressão, apontam para a origem desta intrusão em uma porção do manto litosférico com condições favoráveis à formação e preservação de diamantes. Embora as análises químicas indiquem altos teores de Cr e Mn em ilinenita da intrusão Limeira 1 (condições de 102 baixa), a ausência de granada e a baixa razão MgO/ÇaO nessa rocha sugerem que essa intrusão originou-se possivelmente em uma porção rasa do manto litosférico na qual o diamante não é estável.
Abstract: Mineralogical and textura! phase relations in the Batovi 6 (State ofMato Grosso, Brazil) kimberlite, together with geochemical and radiogenic isotope data e4]Ndf~d = 0.51270 1, 87Sr~Sr = 0.70440) indicate that this intrusion is a tuffisitic kimberlite breccia of diatreme facies, classified as a craton related Group IA kimberlite. Garoet macrocrysts of peridotite type are abundant in Batovi 6 and their chemica1 compositions indicate equilibration under high temperature and pressure conditions. However, some garoet crysta1s separated ftom heavy mineral concentrate show N~O, Al20], Si02 contents resembling Group B eclogitic garoet which occur as inclusions in diamond fTom the Monastery kimberlite mine (South Afuca) and fTom alluvial deposits of Juina, Mf (Brazil). Although there are indications that the Batovi 6 kimberlite was formed in a ferti]e portion of the astenospheric mantIe, the chemical compositions of iImenite and garoet suggest the occurrence of unfavorable conditions for diamond preservation. The Três Ranchos 4 and Limeira I intrusions show petrographic characteristics ofhipabyssal facies and are classified as macrocrysta1ine kimberlites. Whole rock chemistry, and mineral compositions ofthe Três Ranchos 4 intrusion indicate its derivation fTom a portion ofmantle with favorable conditions for the formation and preservation of diamond. Inasmuch as magnesian iImenites in the Limeira 1 intrusion depicted relatively higher Cr 20] and MoO contents, indicating 10w jO'};o the absence of gamet and whole rock with low MgO/CaO ratios suggest that this intrusion originated in a shallow lithospheric source, in which diamond is not stable.
Mestrado
Metalogenese
Mestre em Geociências
Adrião, Álden de Brito. "Heterogeneidade mantélica na fonte da Província Magmática Paraná : nova evidência de 128 Ma da Província kimberlítica Rosário do Sul, Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/131915.
Full textWe report here a detailed petrographic study, the first whole-rock major and trace element geochemical analyses, Sr-Nd isotope data and U-Pb CaTi-perovskite age for the Rosário-6 kimberlite from the Rosário do Sul Kimberlitic Province (RSKP). This area is located on the edge of the Paraná Basin, Southernmost Brazil and represents the best outcrop from RSKP, being the unique with cohesive rock samples. Primary kimberlite mineralogy of Rosário-6 comprises two generation of olivine crystals: phenocrysts (<2 mm) and macrocrysts (>2 mm) in a groundmass composed by serpentine, CaTi-perovskite, clinopyroxene, phlogopite, apatite, carbonate and Fe-Ti oxides. The rock presents several sub-rounded megacrysts of olivine (>1 cm) and lapillitic components, and has a late-stage of poikilitic serpentine and carbonate crystals. Based on major and trace elements analysis we classified these samples as ultrabasic and ultrapotassic composition, with relative low alteration (CI up to 1.5) and small chemical heterogeneity without dispersion in all binary diagrams. The whole-rock geochemistry correlates well with most Group I kimberlites, such as Mg# ~80, MgO ~21 wt%, SiO2 ~32 wt%, CaO ~12 wt%, K2O ~2 wt%, Ni = 717-800 ppm, Nd = 87.3-106.7 ppm, Ba/Nb<12, La/Nb<1.1, Ce/Pb>22 and Th/Nb<0.14. Incompatible trace elements variations, such as LILE, HFSE and LREE, and Sr-Nd isotope composition suggest sublithospheric mantle or deeper origin. Geochemical modeling corroborates to the hypothesis of very low partial melting degree of a depleted mantle previously enriched with nearly 0.5% of carbonatitic liquids. U-Pb CaTi-perovskite age yielded a highly precision emplacement age of 128±8 Ma (MSWD=3.7) for Rosário-6 kimberlite, which is in agreement with the latter magmatic events related to Paraná continental flood basalt volcanism in the Southernmost Brazil. This work provides new evidences for the incompatible element enrichment and heterogeneities in the mantle source of this important Large Igneous Province formation and the emplacement of RSKP in an extensional environment.
Donatti, Filho Jose Paulo 1981. "Petrogênese do campo kimberlítico Brauna, Cráton do São Francisco." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287306.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Geociências
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Resumo: A presente tese concentrou-se na classificação do magmatismo kimberlítico do Campo Kimberlítico Brauna no nordeste do Craton do São Francisco, e sua relação com as rochas encaixantes, xenólitos (e.g. crustais e mantélicos), mineralizações diamantíferas e contexto tectônico regional associado ao Greenstone Belt do Rio Itapicuru e Bloco Serrinha. O escopo do estudo refere-se à utilização de técnicas analíticas convencionais como microscopia, microscopia eletrônica de varredura, microssonda eletrônica e difratometria de raios-X para a classificação da mineralogia e da química mineral dos kimberlitos e xenólitos associados. Somado a isto, utilizou-se técnicas analíticas mais avançadas aplicadas ao estudo de kimberlitos, como a obtenção de dados geoquímicos de alto poder interpretativo (e.g. HFSE e REE) por ICPMS e XRF, com a finalidade de se entender a petrogênese dessas rochas. Além de análises isotópicas de Sr-Nd em rocha total e perovskita da matriz kimberlítica, e U-Pb em grãos de zircão e perovskita por SHRIMP e TIMS respectivamente, para definir e determinar fontes geradoras do magmatismo do campo kimberlítico. Este volume foi organizado sob forma de dois artigos completos, onde a grande maioria dos resultados desta tese foram apresentados. O primeiro artigo intitulado ?Age and Origin of the Neoproterozoic Brauna Kimberlites: magma generation within the metasomatized base of the São Francisco craton, Brazil?, teve como principal objetivo a classificação petrogenética dos kimberlitos e xenólitos associados do Campo Kimberlítica Brauna, desde então superficialmente explorada por empresas de exploração de diamantes na década de 80 e 90. Neste artigo foram utilizadas técnicas convencionais de classificação de rocha bem como: descrições petrográficas, relações de campo, microscopia eletrônica de varredura, microssonda RAMAM, difratometria de Raio-X e geoquímica de elementos maiores e traços. O artigo contempla também a utilização de técnicas mais avançadas até então inexistentes na literatura sobre kimberlitos no Brasil, são elas: datação radiométrica U-Pb em fenocristais de perovskita por Termal Ionization Mass Spectrometry (TIMS), dados isotópicos de Sr-Nd em rocha total e isótopos de Nd em fenocristal de perovskita. Além disso, o artigo contribui de forma representativa para uma discussão freqüente entre a comunidade internacional de kimberlitólogos sobre tipos de magmas kimberlíticos heterogêneos. O segundo artigo intitulado ?Zircon xenocrysts U-Pb dating from the Neoproterozoic Brauna Kimberlite Field, São Francisco Craton, Brazil: geodynamic implications for kimberlitic intrusion?, foi contemplado com dados isotópicos precisos de U-Pb em xenocristais de zircão do kimberlito e fenocristais de zircão do granodiorite encaixante por Sensitive High Resolution Ion Microprobe (SHRIMP II). Este artigo teve como principal objetivo a identificação das diferentes idades registradas nos xenocristais de zircão trazidos à superfície da Terra pelo magmatismo kimberlítico com o intuito de se entender a constituição da litosfera sob o Bloco Serrinha, onde o campo kimberlítico Brauna encontra-se intrudido. Além disso, o estudo isotópico detalhado do granodiorito encaixante também se fez importante para o entendimento da mecânica de colocação e forma de contaminação crustal desse tipo de magmatismo tão peculiar, tornando este artigo o segundo no mundo com esse tipo de abordagem
Abstract: The present thesis deals with the classification of the Brauna Kimberlite Field magmatism, northeast São Francisco Craton, and its relationship with the host-rock, xenoliths (e.g. crustal and mantelic), diamondiferous mineralization and the regional tectonic context associated to the Rio Itapicuru greenstone belt and Serrinha Block. The scope of this study refers to conventional methodologies such as scanning electron microscope, electronic microprobe and X-ray difratometry for the mineralogy classification of the Brauna kimberlites and the related xenoliths. Additionally, we have used more robust analytical techniques applied to the kimberlite study, such as ICPMS and XRF and also isotopic analysis of whole rock and perovskite Sr-Nd isotope, and also zircon U-Pb geochronology, using TIMS and SHRIMP respectively, to understand the kimberlitic source and magma generation process. This volume was organized under paper form where the results, discussions and conclusions are reported. The first manuscript entitle -Age and Origin of the Neoproterozoic Brauna Kimberlites: magma generation within the metasomatized base of the São Francisco craton, Brazil, had the main subject the Brauna kimberlites and xenoliths petrogenetic classifications, since then superficially explored by the exploration Companies during the 80's and 90's decades. In this article we have utilized conventional techniques for rock classification such as petrographic descriptions, field relationships i.e. SEM, RAMAM and X-Ray difratometry for major and trace elements geochemistry. Also we have analysed the samples by most advanced techniques inexistent in the Brazilian literature so far, for example: trace elements using ICPMS, U-Pb perovskite dating and whole rock Sr-Nd and perovskite Nd isotope by TIMS. Furthermore, this manuscript has contributed for the international kimberlite community discussion about the heterogeneous kimberlitic magma types. The second manuscript entitled -Zircon xenocrysts U-Pb dating from the Neoproterozoic Brauna Kimberlite Field, São Francisco Craton, Brazil: geodynamic implications for kimberlitic intrusion, was awarded with U-Pb isotopic data in zircon xenocrysts in Brauna kimberlites and its host rock Nordestina granodiorite batholith using the SHRIMP. This article had the principal objective, to place constraints on the lithosphere beneath the Archean Serrinha Block. Furthermore, the detailed isotopic study on the host-rock was important to improve our understanding about the form and dynamic of the kimberlitic intrusion. It is important to note that this paper is the second published paper with this subject in the world
Doutorado
Geologia e Recursos Naturais
Doutor em Ciências
Carniel, Larissa Colombo. "Heterogeneidade mantélica na Região Sul do Brasil evidenciada por mineraloquímica de kimberlitos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/171433.
Full textKimberlites are volcanic rocks which often contain diamonds, graphite and/or carbonate, and the stability of these minerals is directly influenced by the variability of oxygen fugacity (fO2) of the magma during its ascent. Second Chakhmouradian and Mitchell (2000), CaTiO3-perovskites may be used to unravel the conditions of some of the multiple stages of crystallization in the magmatic history of these rocks. In order to establish oxygen fugacities of natural kimberlititic magmas, we experimentally equilibrated CaTiO3-perovskites with synthetic kimberlitic melts at high temperatures, different oxygen fugacities and different pressures. The experiments show that perovskite incorporates increasing amounts of Fe3+ with increasing fO2. The oxygen barometer equation developed in this study can be applied in kimberlite rocks that contain CaTiO3-perovskite and olivine from different fO2 conditions. In the present research, we applied this oxygen barometer in the Rosário do Sul kimberlite samples, which is a transitional kimberlite located in the southwestern edge of the Paraná Basin. The mineral data of this kimberlite suggest that its source is a product of the reaction of a silicate-carbonate liquid in the mantle. U-Pb ages of ~ 128 Ma on CaTiO3-perovskites (Conceição et al., in prep.) reveal that the Rosário do Sul kimberlite probably erupted just after the volcanism of Paraná-Etendeka Province. We calculated crystallization temperatures, pressures and oxygen fugacities (fO2) of Rosário do Sul and Alfeu-I kimberlites, another important kimberlite situated in the South of Brazil. Their source conditions are estimated using different methods from olivines, spinels, CaTiO3-perovskites, garnets, orthopyroxenes and clinopyroxenes compositions. The calculated temperature, pressure and fO2 values of Rosário do Sul and Alfeu-I kimberlites suggest that they were transported to the surface under fO2 conditions in which CO2-rich fluids may react with mantle silicates to produce carbonates. The mineral composition and fO2 conditions of Rosário do Sul kimberlite indicate that its source may have been metasomatized by fluids generated from the recycling of a subducted oceanic plate during the Gondwana breakup and the South Atlantic opening, just after the Paraná-Etendeka Province volcanism. The source conditions of Rosário do Sul and Alfeu-I kimberlites are also used to estimate the potential of these kimberlites to preserve diamonds.
Provenzano, Carlos Augusto Silva. "Caracterização petrográfica, química mineral e petrogênese do Kimberlito Alfeu I - Canguçu/RS e uma revisão conceitual de magmatismo e rochas kimberlíticas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/150904.
Full textThe Alfeu-I kimberlite is an intrusive volcanic chimney in Suite Pinheiro Machado of the Batholith Pelotas domain, which occurs in the eastern portion of the Rio Grande do Sul Shield (ESRG). The body has a semicircular shape with a diameter ≈20m. Textural and primary structural features and mineralogy observed in the rocks of this body indicate that at current exposure level can be related to diatreme facies. The Alfeu-I rock is composed of phenocrysts and megacrystals / macrocrystals of varied composition (mica, spinel, garnet, ilmenite and pyroxene) in interstitial matrix with accreted clasts (lapilli peletal) and lithic, as mantle autoliths and xenoliths and surrounded rocks. In the optical microscope have serial inequigranular texture, composed of mica, spinel, garnet and ilmenite macrocrystals; phlogopite phenocrysts and rarely clinopyroxene and olivine microphenocrystals, surrounded by brown color rocks with aphanitic matrix. The field data and petrographic observations allowed classifying the kimberlite Alfeu-I as: intrusive and coherent kimberlite (ICK) (Smith et al 2008); diatreme facies of kimberlite tuff (Clement; Skinner, 1985); or volcanoclastic kimberlite (Mitchell, 1986; 1995). As Mitchell (1995), the body is a kimberlite Group II type, as shown by plenty of macro and phenocrysts of phlogopite Despite the petrography and mineralogy of Alfeu-I are compatible to kimberlites Group II type, the mineral chemistry indicates transitional points between Group I and II kimberlite and lamproites. It means that the petrogenesis of Alfeu-I is similar to other potassic “magmas from metassomatized mantle” without any strong affinity with a particular clan or group. And demonstrates that the Alfeu I-body shares petrological and geochemical characteristics that can be related to these three types of rocks (kimberlites Group I and II and lamproites). The findings based on the review and investigation of mineral chemistry compositions pointed to: (i) transitional between kimberlites Group I -Group II - and lamproite; (ii) related to a mantle spinel lherzolitic associated with pyroxenites and eclogites; (iii) enriched in shallower depths common to "kimberlitic” magmas; (iv) with minor indications of a deep, remaining mantle lherzolite garnet facie. These findings indicate that the magmatism of the Serra Geral formation is closely related to the alkaline magmatism and recent Brazilian southern portion.
Costa, Giulianna Vieira da. "Química mineral e geotermobarometria de xenólitos mantélicos do Kimberlito Canastra-01." reponame:Repositório Institucional da UnB, 2008. http://repositorio.unb.br/handle/10482/4871.
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O kimberlito Canastra-01 é uma intrusão na borda sul do Cráton São Francisco reportado como mineralizado. Essa intrusão consiste de dois pipes adjacentes, situados a NW e SE do Córrego da Cachoeira, Minas Gerais. Xenólitos mantélicos foram amostrados pelo Canastra-01 e são constituídos por granada clinopiroxenito, eclogito, anfibólio websteritos, (contendo granada e espinélio), granada lherzolitos, granada e espinélio harzburgitos e dunito. A caracterização química de seus minerais constituintes foi realizada por meio de microssonda eletrônica e a determinação das condições de temperatura e pressão calculadas através de vários geotermobarômetros. A textura dos granada lherzolitos e granada harzburgitos é porfiroclástica com matriz em mosaico e são constituídos, respectivamente, por: granada Prp73,.0 Alm13,9 Grs3,7 e Prp73,0 Alm13,3 Grs4,9, augita, contendo membro final jadeíta, nos granada lherzolitos, bronzita, enstatita e olivina com Fo89,2 a 90,9 e Fo90,0 a 91,2. Os espinélio harzburgitos têm textura granoblástica, augita, enstatita, olivina com Fo entre 91,1 e 92,2 e espinélio de composição aproximada (Mg0,69Fe 0,31) (Cr0,70 Al1,3)O32. As relações Ni versus Fo mostram que o teor de Ni independe do conteúdo de Fo nos granada lherzolitos e espinélio harzburgitos e que, há uma correlação negativa entre eles nos granada harzburgitos, indicando serem restitos de fusão parcial. Os dunitos, de composição Fo 89,3 a 91,1, estão associados ao processo de fusão parcial dos peridotitos, onde a correlação Ni versus Fo é negativa. Desta forma conclui-se que os dunitos também são restitos da fusão parcial de peridotitos. Os websteritos têm textura granoblástica grossa e seus minerais constituintes são: diopsídio, bronzita, pargasita a Mg-Al sadanagaíta nos websteritos que contêm granada e espinélio e Mg-hornblenda no anfibólio websterito; espinélio com composição aproximada de (Mg0,55 Fe0,45)Al2O32 e as granadas com composição média de Prp45,7 Alm37,5 Grs1,0. As temperaturas de equilíbrio calculadas para os websteritos variam de 600 °C a 989°C. Sua origem pode estar associada a cumulados magmáticos, que se formaram ou se reequilibraram em condições de P e T da fácies granada e da fácies espinélio. Os minerais constituintes do granada clinopiroxenito e do eclogito são granada de composição aproximada de piropo-almandina e de clinopiroxênio augita e onfacita, respectivamente. A temperatura média calculada para o granada clinopiroxenito é de 1255 °C e para o eclogito é de 980 °C, que permite inferir que essas rochas tiveram sua origem associada a cumulados e/ou metamorfismo de crosta oceânica. As condições de equilíbrio de P e T dos xenólitos estão espalhadas entre as geotermas aproximadas de 40 a 60 mW/m2, onde os granada lherzolitos estão dentro do campo de estabilidade do diamante. Esses dados permitem inferir que, antes da orogênese Brasiliana, as geotermas do cráton variavam em torno de 40 mW/m2, e com esta orogênese, as geotermas subiram para, aproximadamente, 60 mW/m2. Pelo menos parte dos xenólitos e os diamantes presentes no kimberlitos Canastra-01 são derivados de relictos tectônicos em sua borda sudoeste do Cráton São Francisco e na Faixa Brasília. _____________________________________________________________________________________ ABSTRACT
Canastra-01 kimberlite is located in the southern portion of São Francisco Craton and is known as diamondiferous. This intrusion comprises two adjacent pipes, located in NW and SE of Córrego da Cachoeira, Minas Gerais State, Brazil. Mantle xenoliths were sampled and comprise: garnet cliopyroxenite, eclogite, amphibole websterites (with or without garnet and spinel), garnet lherzolites, garnet and spinel harzburgites, and dunite. The chemical characterization of their minerals was analyzed by electron microprobe and the PT equilibrium conditions were calculated by various geothermobarometers. Garnet lherzolites and garnet harzburgites are porfiroclastic with an olivine mosaic groundmass and containing: garnet Prp73,0 Alm13,9 Grs3,7 and Prp73,0 Alm13,3 Grs4,.9, augite clinopyroxene, with jadeite end member in the garnet lherzolites, bronzite and enstatite and olivine with Fo89,2 to 90,9 and Fo90,0 to 91,2. Spinel harzburgites have granoblastic texture, augite, enstatite, olivine with Fo91,1 e 92,2 and spinel with an aproximate composition (Mg0,69Fe 0,31) (Cr0,70 Al1,3)O32. Ni versus Fo shows that the Ni content is independent of Fo content in the garnet lherzolites and spinel harzburgites and that there is a negative in the garnet harzburgites, indicating an origin of partial melting. For the last rock type, dunites contain only olivine, with Fo content between 89,3 and 91,1, are related to a final process of peridotite partial melting, as shown by the negative Ni versus Fo correlation. Websterites textures are coarse granuloblastic and the main minerals are: diopside, bronzite, pargasite to Mg-Al sadanagaite in the garnet and spinel types and Mg-hornblende in the amphibole only websterite; spinel with approximate composition of (Mg0,55 Fe0,45)Al2O32 and garnets with an average composition of Prpr45,7 Alm37,5 Grs1,0. Calculated temperatures are from 600 °C to 989°C. Their origin could be related to igneous cumulates formed or reequilibrated in PT conditions of garnet facies, and spinel facies. Mineral compositions of garnet clinopyroxenite and eclogite are pyrope-alamandine garnet and augite in garnet clinopyroxenite and onfacite in eclogite. The average calculated temperature of garnet clinopyroxenite is 1255 °C and of the eclogite is 980 °C. Both have an origin related to cumulate or oceanic slab metamorphism. The PT arrays are spread in approximate geotherms from 40 to 60 mW/m2, garnet lherzolites are within the diamond stability field. We propose that a geotherm of around 40 mW/m2 was present before the Brasiliano orogen. During the orogen, the geotherm increased to about 60 mW/m2. Part of the xenoliths and diamonds from Canastra-01 kimbelite are derived from tectonic relicts underlain the southwestern border of São Francisco Craton and the Brasília Mobile Belt.
Thomaz, Leandro Vasconcelos. "Estudo petrográfico e química mineral da intrusão kimberlítica Régis, no oeste de Minas Gerais." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/44/44143/tde-19082009-094419/.
Full textThe Regis Kimberlite surfaces in the Carmo do Paranaíba County, western of the State of Minas Gerais, Brazil. The pipe forms a 1km2 elliptical body. A Cretacic age for the instrusion seems the most probable. It intruded Neoproterozoic metamorphic rocks of Bambuí Group, and if it is located on Sao Francisco Craton or Brasilia Belt remains on doubt. The studies comprise two drills hole, with 250.6 and 316.4 meters, and outcrops descriptions. The kimberlite rocks and their mantle xenoliths samples were investigated through the macroscopic and microscopic characterization. The mantle and kimberlitic minerals have been analysed chemically and were used to support the rocks classification. The surveyed area, including the drilled hole cores, was subdivided into nine facies units. The division was based on structures, contact types, correlated rock texture and mineral association. Two units, with outcrop description, are correlated to two units with drill hole core description. This facies shows a fining-upward sedimentary sequence understood as deposited by debris flow and decantantion on lacustrine environment. In respect to the other five units each one has a specific proportion of crystals, magmaclasts and mantle xenoliths, furthermore a structure and rock fabric. This was explained as formed by pyroclastic flows based on: (1) crustal and mantle xenoliths with reaction rims; (2) pelletal lapilli with glassy rims; (3) ameboid magmaclasts; (4) accumulation of olivine in layers, and others. The mantle xenoliths were characterized through petrographic examination as garnet lherzolite and dunite. The garnet is predominantly pyrope, and plots on the lherzolític field. The olivine is forsteritic, with Fo between 0.90 to 0.92%. The ortopyroxene is predominantly enstatite. Among the clinopyroxene recognizes augite, diopside, omphacite and aegirine-augite. The geothermobarometry reveals sampling on diamond P-T conditions. The kimberlitic phlogopite chemical composition plots on kimberlite type-1 and lamproite field, with the kimberlite type-1 trend. The ilmenite chemical compositions reflect a cratonic environment. The results presented here indicate a diamondiferous potential of the Regis kimberlite. The facies units characterized here may be used to a better mine planning.
Rocha, Lis Franco. "Inversão gravimétrica 3D e interpretação integrada dos métodos CSAMT, gravimétrico e magnetométrico no estudo do kimberlito Régis, MG, Brasil." Universidade do Estado do Rio de Janeiro, 2013. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=4892.
Full textOs diamantes são minerais raros e de alto valor econômico. Estes minerais se formam em condições mantélicas, numa profundidade aproximada de 150 a 200 km e ascendem à superfície englobada em magmas alcalinos e carbonatíticos, nos kimberlitos e lamproitos (depósitos primários). No presente trabalho objetivou-se o estudo da geometria do Kimberlito Régis, o qual pertence à província alcalina do Brasil Meridional, localizado no estado de Minas Gerais, na cidade de Carmo do Paranaíba. Para este estudo foi realizada uma inversão gravimétrica 3D e uma modelagem utilizando dados de gravimetria e os resultados dos estudos de magnetometria (Menezes e La Terra, 2011) e CSAMT (La Terra e Menezes, 2012). As anomalias Bouguer e magnética foram então modeladas a partir de um resultado CSAMT, apresentando como resultado um conduto vulcânico com cerca de 2800 metros de profundidade e 200 metros de largura. Já o resultado da inversão mapeou um corpo com forma de cone invertido, apresentando contrastes de densidade negativos. A metodologia de integração de métodos geofísicos mostrou-se eficiente para estudos exploratórios de kimberlitos, apresentando rapidez e baixo custo quando comparados com os métodos tradicionais.
Silva, Gisella Magalhães. "Análise geofísica do Distrito Diamantífero Abaeté (MG) e de suas possíveis fontes primárias." reponame:Repositório Institucional da UFOP, 2015. http://www.repositorio.ufop.br/handle/123456789/5414.
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A presente dissertação refere-se à análise geofísica realizado no Distrito Diamantífero do Abaeté, Província Diamantífera Oeste do São Francisco (Província Ígnea do Alto Paranaíba), estado de Minas Gerais. O distrito é um importante centro produtor de diamantes, especialmente de gemas gigantes e/ou coloridas. Diamantes apresentando baixas feições de clivagem, gemas com mais de 100ct e abundante de minerais indicadores são comuns, e sugerem proximidade entre as fontes primárias e os depósitos atuais. Os inúmeros corpos ígneos portadores de diamantes com teores subeconômicos em todo Alto Paranaíba e a descoberta de kimberlitos com fácies de cratera em áreas muito próximas ao distrito aumentam o interesse de compreender a origem dos diamantes da região. Mapas geofísicos temáticos de alta precisão e contraste foram confeccionados utilizando dados aeromagnetométricos, gravimétricos de satélites e terrestres. Os mapas, integrados ao conhecimento geológico, foram utilizados para: delimitar as zonas de fraturas continentais que permitiram a ascensão magmática alcalina; corroborar com o conhecimento geofísico dos grupos estratigráficos e das feições tectono-estruturais da área; identificar o comportamento gravimétrico e magnetométrico dos lineamentos que regem as principais drenagens diamantíferas do distrito; e, apontar anomalias geofísicas de possíveis rochas do clã kimberlítico. Três anomalias magnéticas escolhidas, denominadas de Areado, Major e Quintinos, foram detalhadas com levantamentos magnetométricos terrestres. Posteriormente, perfis bidirecionais foram confeccionados para inferir a profundidade das fontes magnéticas através de deconvoluções de Euler. Os perfis bidirecionais de profundidade versus coordenadas foram interpolados formando mapas tridimensionais. Puderam-se observar em profundidade, falhas e fraturas, o Grupo Mata da Corda e embasamento cristalino. O embasamento cristalino da Sub-bacia Abaeté é abulado e no depocentro da área em estudo o pacote sedimentar alcança aproximadamente 3000m de espessura. As pequenas anomalias, Areado, Major e Quintinos, apontados como possíveis rochas do clã kimberlítico, são semelhantes. Todas elas estão muito próximas à superfície, têm no máximo 200m de profundidade total e são amorfas. _________________________________________________________________________________
ABSTRACT: This dissertation presents a geophysical analysis of the Abaeté Diamondiferous District in the West of the São Francisco Diamondiferous Province (Alto Paranaíba Igneous Province), in Minas Gerais State. The district is an important producing center of diamonds, especially of gigantic and fancy colored stones. Diamonds with little cleavages, gems of greater than 100ct and the presence of diamond indicator are usual, suggesting proximity between their primary sources and their present deposit. The discovery of numerous kimberlites and kimberlite clan rocks within the Alto Paranaíba, many preserving crater facies at the surface, a few with diamonds or micro diamonds, enhances interest in understanding the origin of these diamond deposits. Geophysical maps of high resolution were prepared using aeromagnetic data and gravity data from both satellites and ground surveys. These geophysical maps were then integrated with the geological data base. The product of this integration has been used to: define the continental fracture zones which allowed the ascent of alkaline magma; to correlate the geophysics with the known stratigraphy and tectonic features; to identify gravimetric and magnetic features of the lineaments which govern the drainages of the district; and to identify geophysical anomalies which may be caused by rocks of the kimberlite clan. Three aeromagnetic anomalies were selected for the detailing with ground survey, named Areado, Major, and Quintinos. Following the bidirectional profiles were made so as to obtain the depth of magnetic bodies through Euler deconvolutions. These bidirectional profiles were then used to make three-dimensional maps of the region surveyed. From these maps it was possible to observe faults, and fractures as well as distinguishing the Cretaceous Mata da Corda group rocks, and the crystalline basement. The crystalline basement in the Abaeté sub-basin is concave downward. In its depocenter, the maximum thickness of the sedimentary rocks is approximately 3,000 m. The small Areado, Major, and Quintinos anomalies suspected as possible kimberlite clan intrusions are all similar, they are near surface, shallow with no more than 200m depth, and they are shapeless.
Almeida, Vidyã Vieira de. "Mineralogia e petrologia de xenólitos mantélicos das regiões de Ubatuba (SP) e Monte Carmelo (MG): evidências de fusão parcial e metassomatismo no manto superior do sudeste do Brasil." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/44/44143/tde-14102009-082110/.
Full textMineralogical and petrological studies were conducted in mantle xenoliths included in a kaersutite lamprophyre dyke from Ubatuba (SP) (Serra do Mar Igneous Province), and in the Limeira 1 Kimberlite (Monte Carmelo, MG; Alto Paranaíba Alkalic Province), using petrography and major and trace element geochemistry in minerals by electron microprobe and LA-ICPMS. The Ubatuba spinel lherzolites, with equilibrium temperatures ranging from 750 to 950°C, represent a fertlie mantle affected by variable but moderate depletion. Evidence of two types of mantle metasomatis were detected in different samples. Clinopyroxene crystals of the samples with evidence of stronger previous depletion (olivine and pyroxenes with higher Mg#, pyroxenes with lower Al and Na, few proportion of spinel) show enrichment with high LILE/HFSE, attributed to fluids/melts derived from subduction zone. On the other hand, a spinelpoor wehrlite shows a clinopyroxene with both LILE and HFSE enrichment, suggestive of interaction with alkaline fluids/melts. The Limeira 1 mantle xenoliths correspond to lherzolites and dunites showing more textural and mineralogical variety and equilibrium temperatures ranging from 760 to 820°C. Modal metasomatism was identified by the presence of abundant pockets with concentration of LILE and HFSE-rich secondary minerals, including in some cases, exotic phases typical of upper mantle metasomatism. The chemical signature of the metasomatic minerals is similar to those found in MARID and in veined metasomatic peridotites from South Africa kimberlite xenoliths. Petrographic and chemical evidences of decompression (suggesting the former presence of garnet) were observed in a sample affected by enrichment with high LILE/HFSE. The different evidences of depletion and enrichment processes observed in the two groups of xenoliths (Ubatuba and Monte Carmelo) indicate a lateral variability of the spinelfacies upper mantle in southeast Brazil, which may reflect the distinct tectonic and magmatic processes that affected these two regions.
Books on the topic "Kimberlito"
Kimberlites: Mineralogy, geochemistry, and petrology. New York: Plenum Press, 1986.
Find full textInternational Kimberlite Conference (4th 1986 Perth, W.A.). Kimberlites and related rocks: 4IKC : proceedings of the Fourth International Kimberlite Conference, Perth, 1986. Edited by Ross J and Geological Society of Australia. Carlton, Vic: Published for the Geological Society of Australia Inc. by Blackwell Scientific, 1989.
Find full textW. Dan Hausel. Geology of the Iron Mountain Kimberlite District: And Nearby Kimberlitic Indicator Mineral Anomalies in Southeastern Wyoming. Laramie, Wyoming: Wyoming State Geological Survey, 2003.
Find full textMitchell, Roger H. Kimberlites. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0.
Full textM, Vladimirov B., ed. Geokhimicheskie osobennosti mineralov kimberlitov: Po dannym izuchenii͡a srednepaleozoĭskikh kimberlitov I͡Akutii. Novosibirsk: Izd-vo "Nauka," Sibirskoe otd-nie, 1986.
Find full textMilashev, V. A. Kimberlity i glubinnai͡a︡ geologii͡a︡. Leningrad: "Nedra," Leningradskoe otd-nie, 1990.
Find full textBartoshinskiĭ, Z. V. Kristallomorfologii͡a︡ almaza iz kimberlitov. Kiev: Nauk. dumka, 1991.
Find full textShkodzinskiĭ, V. S. Proiskhozhdenie kimberlitov i almaza. I͡A︡kutsk: I͡A︡kutskiĭ nauch. t͡s︡entr SO RAN, 1995.
Find full textMilashev, V. A. Ėnergeticheskie aspekty obrazovanii︠a︡ kimberlitov. Sankt-Peterburg: VNIIOkeangeologii︠a︡, 2004.
Find full textBook chapters on the topic "Kimberlito"
Mitchell, Roger H. "Postscript." In Kimberlites, 399–400. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_10.
Full textMitchell, Roger H. "Historical Aspects of Kimberlite Petrology." In Kimberlites, 1–8. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_1.
Full textMitchell, Roger H. "Kimberlite and Related Rocks." In Kimberlites, 9–28. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_2.
Full textMitchell, Roger H. "Kimberlite Magmatism and Textural Genetic Classifications of Kimberlite." In Kimberlites, 29–71. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_3.
Full textMitchell, Roger H. "Diatremes and Root Zones." In Kimberlites, 73–104. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_4.
Full textMitchell, Roger H. "Kimberlite Fields and Provinces: Their Tectonic Setting." In Kimberlites, 105–35. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_5.
Full textMitchell, Roger H. "Mineralogy of Kimberlites." In Kimberlites, 137–274. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_6.
Full textMitchell, Roger H. "Geochemistry of Kimberlites." In Kimberlites, 275–324. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_7.
Full textMitchell, Roger H. "Experimental Studies Relevant to the Formation and Crystallization of Kimberlite Magma." In Kimberlites, 325–58. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_8.
Full textMitchell, Roger H. "Petrogenesis and Evolution of Kimberlite Magma." In Kimberlites, 359–97. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-0568-0_9.
Full textConference papers on the topic "Kimberlito"
Rocha, Lis, Emanuele La Terra, and Paulo de Tarso Menezes. "Inversão gravimétrica 3D e interpretação integrada dos métodos CSAMT, gravimétrico e magnetométrico no estudo do Kimberlito Régis, MG, Brasil." In 13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26-29 August 2013. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2013. http://dx.doi.org/10.1190/sbgf2013-083.
Full textAndrews, Graham D. M., J. Kelly Russell, Brenna G. Cole, and Sarah R. Brown. "THE KIMBERLITE FACTORY: THE VOLCANIC NATURE OF KIMBERLITES." In Joint 53rd Annual South-Central/53rd North-Central/71st Rocky Mtn GSA Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019sc-325914.
Full textVasilyev, Prokopiy, Brent McInnes, and Tom Reddicliffe. "Evaluation of the Source of Diamonds and Other Kimberlitic Minerals from the Webb Kimberlite Field, Western Australia." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2667.
Full textHamilton, M. P., and S. J. Webb. "Delineation of kimberlite pipes using ground geophysical techniques: A Case Study of two kimberlites near Kimberley, South Africa." In 8th SAGA Biennial Technical Meeting and Exhibition. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.144.37.
Full textPandey, Ashutosh, and N. v. Chalapathi Rao. "Geochemical Insights into the Distinct Mantle Sources of Coeval Shoshonitic Lamprophyres and Kimberlites from the Wajrakarur Kimberlite Field, Dharwar Craton." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.2024.
Full textWillmott, G. R. "Shock Properties of Kimberlite." In SHOCK COMPRESSION OF CONDENSED MATTER - 2003: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2004. http://dx.doi.org/10.1063/1.1780521.
Full textPal, S. K., and S. Kumar. "Kimberlite mapping using Electrical Resistivity Tomography in Wajrakarur kimberlite field, Eastern Dharwar craton." In 1st Indian Near Surface Geophysics Conference & Exhibition. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201979029.
Full textFedortchouk, Yana, and Ingrid Chinn. "Crystallization Conditions of Kimberlite Magma." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.695.
Full textTyler, Duncan, and S. Godden. "Geotechnical Modelling for Kimberlite Pipes." In First Southern Hemisphere International Rock Mechanics Symposium. Australian Centre for Geomechanics, Perth, 2008. http://dx.doi.org/10.36487/acg_repo/808_159.
Full textSymons, G., and S. Lowe. "Geophysical Response Over A Kimberlite." In 5th SAGA Biennial Conference and Exhibition. European Association of Geoscientists & Engineers, 1997. http://dx.doi.org/10.3997/2214-4609-pdb.223.003.
Full textReports on the topic "Kimberlito"
McClenaghan, M. B., I. M. Kjarsgaard, and B. A. Kjarsgaard. Indicator mineralogy of the KL-01 and KL-22 kimberlites, Lake Timiskaming kimberlite field, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2008. http://dx.doi.org/10.4095/225398.
Full textSader, J. A., M. I. Leybourne, M. B. McClenaghan, and S. M. Hamilton. Geochemistry of groundwater from Jurassic kimberlites in the Kirkland Lake and Lake Timiskaming kimberlite fields, northeastern Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2003. http://dx.doi.org/10.4095/214841.
Full textMcClenaghan, M. B., I. M. Kjarsgaard, and B. A. Kjarsgaard. Kimberlite indicator mineral chemistry and till geochemistry around the Seed and Triple B kimberlites, Lake Timiskaming, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2004. http://dx.doi.org/10.4095/215911.
Full textMcClenaghan, M. B., I. M. Kjarsgaard, and B. A. Kjarsgaard. Kimberlite indicator mineral chemistry of the Bucke and Gravel kimberlites and associated indicator minerals in till, Lake Timiskaming, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2012. http://dx.doi.org/10.4095/289599.
Full textKjarsgaard, B. A. Kimberlite-hosted diamond. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/208034.
Full textKjarsgaard, B. A. Kimberlites. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/210935.
Full textPell, J., B. Clements, H. Grütter, S. Neilson, and H. Grenon. Following kimberlite indicator minerals to source in the Chidliak Kimberlite Province, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/300291.
Full textPell, J., B. Clements, H. Grütter, S. Neilson, and H. Grenon. Following kimberlite indicator minerals to source in the Chidliak Kimberlite Province, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2013. http://dx.doi.org/10.4095/292687.
Full textKjarsgaard, B. A. Les kimberlites. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/210934.
Full textKjarsgaard, B. A. Prairie kimberlites. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/210965.
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