Auswahl der wissenschaftlichen Literatur zum Thema „Sm-Nd isotope composition“
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Zeitschriftenartikel zum Thema "Sm-Nd isotope composition"
Soloshenko, N. G., M. V. Streletskaya, M. V. Chervyakovskaya und D. V. Kiseleva. „Implementation and experience of using methods for analyzing the isotopic composition of Sm and Nd, Rb and Sr in rock samples at the Geoanalitik Center for Collective Use“. LITHOSPHERE (Russia) 24, Nr. 2 (07.05.2024): 364–75. http://dx.doi.org/10.24930/1681-9004-2024-24-2-364-375.
Der volle Inhalt der QuelleChervyakovskaya, M. V., und V. S. Chervyakovskiy. „Determination of Sm/Nd and Sr isotopic composition using an ICP-MS Neptune Plus equipped with an NWR 213 attachment for laser ablation“. LITHOSPHERE (Russia) 21, Nr. 5 (31.10.2021): 712–23. http://dx.doi.org/10.24930/1681-9004-2021-21-5-712-723.
Der volle Inhalt der QuelleHuber, Miłosz A., Stanisław Hałas, Yuri N. Neradovsky, Tamara B. Bayanova, Artem W. Mokrushin und Lesia Lata. „Stable isotope geochemistry of sulfides from intrusion in Monchegorsk, northern part of Baltic Shield“. Geochronometria 43, Nr. 1 (01.06.2016): 96–101. http://dx.doi.org/10.1515/geochr-2015-0034.
Der volle Inhalt der QuelleÖhlander, Björn, Johan Ingri, Magnus Land und Hans Schöberg. „Change of Sm-Nd isotope composition during weathering of till“. Geochimica et Cosmochimica Acta 64, Nr. 5 (März 2000): 813–20. http://dx.doi.org/10.1016/s0016-7037(99)00365-8.
Der volle Inhalt der QuelleAzovskova, O. B., E. I. Soroka, M. Yu Rovnushkin und N. G. Soloshenko. „Sm-Nd isotopy of the dykes of the Vorontsovskoe gold-ore deposit (Northern Urals)“. Vestnik of Geosciences 9 (2020): 3–6. http://dx.doi.org/10.19110/geov.2020.9.1.
Der volle Inhalt der QuelleSHELLNUTT, J. GREGORY, TUNG-YI LEE, CHIH-CHENG YANG, SHIN-TAI HU, JONG-CHANG WU, KUO-LUNG WANG und CHING-HUA LO. „Late Permian mafic rocks identified within the Doba basin of southern Chad and their relationship to the boundary of the Saharan Metacraton“. Geological Magazine 152, Nr. 6 (06.05.2015): 1073–84. http://dx.doi.org/10.1017/s0016756815000217.
Der volle Inhalt der QuelleLastochkin, E. I., G. S. Ripp, D. S. Tsydenova, V. F. Posokhov und A. E. Murzintseva. „Epithermal Fluorite Deposits in Transbaikalia (Geochemical Features, Sources of Matter and Fluids, and Genesis)“. Russian Geology and Geophysics 62, Nr. 4 (01.04.2021): 415–26. http://dx.doi.org/10.2113/rgg20194128.
Der volle Inhalt der QuelleSerov, Pavel A., und Tamara B. Bayanova. „The Sulfide/Silicate Coefficients of Nd and Sm: Geochemical “Fingerprints” for the Syn- and Epigenetic Cu-Ni-(PGE) Ores in the NE Fennoscandian Shield“. Minerals 11, Nr. 10 (29.09.2021): 1069. http://dx.doi.org/10.3390/min11101069.
Der volle Inhalt der QuelleBelka, Z., J. Dopieralska, M. Jakubowicz, S. Skompski, A. Walczak, D. Korn und M. Siepak. „Nd isotope record of ocean closure archived in limestones of the Devonian–Carboniferous carbonate platform, Greater Karatau, southern Kazakhstan“. Journal of the Geological Society 178, Nr. 1 (04.09.2020): jgs2020–077. http://dx.doi.org/10.1144/jgs2020-077.
Der volle Inhalt der QuelleFridovsky, V. Yu, A. E. Vernikovskaya, K. Yu Yakovleva, N. V. Rodionov, A. V. Travin, N. Yu Matushkin und P. I. Kadilnikov. „Geodynamic Formation Conditions and Age of Granitoids from Small Intrusions in the West of the Yana–Kolyma Gold Belt (Northeast Asia)“. Russian Geology and Geophysics 63, Nr. 4 (01.04.2022): 483–502. http://dx.doi.org/10.2113/rgg20214442.
Der volle Inhalt der QuelleDissertationen zum Thema "Sm-Nd isotope composition"
Kondo, Nozomi. „Major element composition of the Hadean crust: constraints from Sm-Nd isotope systematics and high-pressure melting experiments“. Kyoto University, 2018. http://hdl.handle.net/2433/232387.
Der volle Inhalt der Quelle0048
新制・課程博士
博士(人間・環境学)
甲第21186号
人博第858号
新制||人||204(附属図書館)
29||人博||858(吉田南総合図書館)
京都大学大学院人間・環境学研究科相関環境学専攻
(主査)教授 小木曽 哲, 教授 石川 尚人, 教授 酒井 敏, 准教授 飯塚 毅
学位規則第4条第1項該当
De, Assunção Rodrigues Mariana. „Analyse de la provenance sédimentaire des bassins du Crétacé du système Andes-Amazonie-marge équatoriale et des relations avec la paléogéographie et la tectonique“. Electronic Thesis or Diss., Toulouse 3, 2023. http://www.theses.fr/2023TOU30363.
Der volle Inhalt der QuelleThe Cretaceous is characterized by major paleogeographic, geodynamic, and climatic changes, including the formation of new oceans such as the equatorial Atlantic Ocean, the continued fragmentation of Gondwana, and greenhouse effect periods. All these changes are potentially contained in the sedimentary records of the basins. The Andes-Amazonia-Equatorial Margin system is a vast sedimentary system whose geodynamic and palaeoenvironmental evolution is recorded in the Amazonian retroarc foreland basins, the Brazilian intracratonic basins, and those of the equatorial margin. In the western part (Andean region), recent studies suggest that the onset of the Andean orogeny occurred during the Late Cretaceous, but the development of drainage systems and the source of sediments deposited during the Cretaceous are still poorly understood. The Lower Cretaceous is recorded in Brazilian intracratonic and equatorial basins and bears witness to crustal rifting phases following Gondwana's break-up. The Araripe Basin is a good example of these basins since it contains a complete and particularly well-studied sedimentary record. However, the origin of the sediments from the various tectonic stages of basin formation and the Cretaceous origin of the marine incursions that affected it remain to be determined. The aim of this thesis is to propose a palaeogeographic reconstruction of the Andes-Amazonia-Equatorial Margin system during the Cretaceous and to analyze the geodynamic and tectonic changes that affected it. To do this, we used provenance methods, in particular major and trace element geochemistry, Sm and Nd isotopic composition, and U-Pb ages on zircons. The results obtained have enabled us to identify the source zones of the Araripe Basin during the pre-, syn- and post-rift phases and thus to gain a better understanding of the palaeogeographic configuration of the north-eastern region of Brazil at the beginning of the Cretaceous. The sediments in the Araripe basin come mainly from the Palaeoproterozoic (2.3-1.6 Ga) terrains of the Borborema province and the granitic plutons of the Brasiliano cycle (720-541Ma). The basin has a sedimentary history linked to the South Atlantic and equatorial break-up phases. During the pre-rift phase (~152-135 Ma), the basin was part of the Afro-Brazilian depression and received sediments from the N-NW. During the rift phase (~135-125Ma), there was a change in source due to continental break-up and the formation of the South Atlantic, with an influx of sediments from the eastern part of the Borborema province. During the post-rift phase (121-113 Ma), the basin ceased to be fed by the eastern part and marine incursions dominated the sedimentation environment. Finally, during the post-rift II phase (113-100 Ma) a last change in sources was observed, with sources to the NE reflecting the final moment of the fragmentation of Gondwana. A study of the provenance of sediments from the basins of western Amazonia (Acre and Madre de Dios) indicates that the sources are cratonic, originating mainly from the Ventuari-Tapajos (2.0 - 1.82 Ga) and Rio Negro - Juruena (1.82 - 1.54 Ga) terrains. These results indicate that a vast intracontinental drainage network ('Sanozama') emerged in response to the uplift of the Purus Arch and the cratonic regions of Brazil and the Guianas during the opening of the equatorial Atlantic Ocean. The integration of the results obtained compiled with data from the literature has made it possible to propose four palaeogeographic maps of the northern part of the South American platform. They highlight how geodynamic mechanisms linked to the opening of the South Atlantic and equatorial oceans controlled and shaped the paleogeography of this region
Flageole, Janick. „Sm-Nd Isotopic Composition of Mantle-Derived Rocks from the Saglek-Hebron Gneiss Complex, Northern Labrador“. Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39208.
Der volle Inhalt der QuelleWAKAKI, Shigeyuki. „Estimation of optimal isotopic compositions of Sr, Ba, Nd and Sm spikes for double spike thermal ionization mass spectrometry by error propagation simulation“. Dept. of Earth and Planetary Sciences, Nagoya University, 2012. http://hdl.handle.net/2237/20538.
Der volle Inhalt der QuelleDavid, Marta Edith Velásquez. „Composição isotópica de Pb-Sr e Nd da mineralização de ouro do depósito Córrego do Sítio, Quadrilátero Ferrífero (MG): implicações na modelagem conceitual“. Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/44/44141/tde-19042007-142433/.
Der volle Inhalt der QuelleThe Quadrilátero Ferrífero is an important geotectonic unit of the São Francisco Craton that host iron and gold deposits within the vulcanosedimentary rocks of the greenstone belt Rio das Velhas. The geodynamic evolution of this greenstone includes several tectonometamorphic events. Gold deposits were formed by epithermal fluids, remobilized during the Proterozoic orogenic processes, are associated whit the banded iron formations and are sporadically disseminate in metapelitic rocks within the top of the greenstone sequence. In the ores is common the crystallization of iron sulfide minerals during diverse stages. Gold deposits have an important structural control by folds, reverse faults and strike-slip shearing zones, and are commons several hydrothermal alteration processes like sericitization, chloritization and carbonate usually related to the deformation. The Córrego do Sítio gold deposit is hosted in turbiditic siliciclastic rocks that are metamorphosed in the greenschist facies. The gold is associated with the iron sulfide arsenopyrite and pyrite, which are disseminated in metapelitic rocks and quartz-carbonate veins. The mineralization includes vary stages of crystallization, (1) pyrite and pyrrotite (2) arsenopyrite, pyrrotite and fine pyrite, (3) arsenopyrite whit pyrrotite and sulphosalts in quartz vein, and (4) pervasive pyrite. An integrated Pb, Sr e Nd, isotopic study of the Córrego do Sítio deposit allowed to identify that sources of the mineralizing fluids was the host rocks, that in the policiclic evolution the gold mineralizaton had participation events of metamorphism and hidrothermalism to age 2.2, 2.0 and 0.6 Ga. respectively the wich induced the hydrothermal circulation processes in the study area. The isotopic character of this deposit and its comparison with similar ones, suggest that the gold and its metals associated it is deposited in Córrego do Sítio to age 2.2 Ga. and that metals were derived from the banded iron formations, and remobilized by hidrothermal fluids across reverse faults. Although U-Pb (SHRIMP) and K-Ar geochronologic data were not conclusive to constrain the age of the mineralization, they provide to age ~2.7 Ga. that a good limit for the sedimentation of the host rock. It is suggest that there is a potential for gold prospection within the metapellitic rocks associated with banded iron formation of the Greenstone Rio das Velhas, and that the more relevant targets include areas with inverse and strike-slip fault.
Lau, W. K. „Geochemical and Sm-Nd isotopic composition of Palaeoproterozoic eclogite and associated rocks in the Usagaran Orogenic Belt, Tanzania“. Thesis, 2009. http://hdl.handle.net/2440/129279.
Der volle Inhalt der QuelleEclogites from the Usagaran Orogenic Belt of Tanzania have been reliably dated at 2.0 Ga and are the oldest reported subduction-related eclogites within a well-preserved orogenic belt. Based on limited geochemistry from two samples of eclogite from the Usagaran Belt, Möller et al. (1995) concluded that the protoliths were similar to MORB. This study analyzed a larger number of eclogitic samples and a suite of structurally intercalated mafic and pelitic rocks to establish the tectonic setting of the Usagaran Orogenic Belt rocks. Eclogitic rocks from the Usagaran Orogenic Belt display LILE and LREE enrichment relative to present-day MORB. Variations in εNd values from depleted mantel at 2.0 Ga supported this interpretation. The mantle-derived mafic rocks show strong Nb depletions, indicating that they are subduction-related. Enrichment of mafic rocks in LILE and LREE are likely caused by dehydration of the subducting slab with some contamination from crustally derived materials perhaps via subducted sediment. The intercalated pelites are mainly derived from the Tanzanian Craton, with a significant mafic input evidenced by high Cr & Ni values. Based on the geochemical isotopic compositions and field relationships, the eclogites, mafic rocks and pelites all formed in a subduction setting that operated around 2.0 Ga. Despite the fact that the Earth was hotter in its early history, modern plate tectonics, (i. e., subduction of cold oceanic crust into a warm mantle resulting in high-pressure low-temperature metamorphism), occurred and was recorded in the Usagaran Belt during the Palaeoproterozoic. Thus modern-style plate tectonics have operated since at least 2.0 Ga.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 2009
Buchteile zum Thema "Sm-Nd isotope composition"
Thompson, M. D., S. M. Barr und J. C. Pollock. „Evolving views of West Avalonia: Perspectives from southeastern New England, USA“. In New Developments in the Appalachian-Caledonian- Variscan Orogen. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.2554(03).
Der volle Inhalt der QuelleKonopelko, Dmitry L. „Appendix C8. Sm-Nd isotopic compositions of whole rock samples of granitoids of western Uzbek Tien Shan“. In PALEOZOIC GRANITOID MAGMATISM OF WESTERN TIEN SHAN. St. Petersburg State University, 2020. http://dx.doi.org/10.21638/11701/9785288060250.appv8.
Der volle Inhalt der QuelleKonopelko, Dmitry L. „Appendix C1. Sm-Nd isotopic compositions of whole rock samples of granitoids of Kokshaal Segment of South Tien Shan and surrounding areas“. In PALEOZOIC GRANITOID MAGMATISM OF WESTERN TIEN SHAN. St. Petersburg State University, 2020. http://dx.doi.org/10.21638/11701/9785288060250.appv1.
Der volle Inhalt der QuelleKonferenzberichte zum Thema "Sm-Nd isotope composition"
Frossard, Paul, Maud Boyet, Audrey Bouvier, Pierre Bonnand und Delphine Auclair. „Deciphering Nd and Sm Isotope Composition in Chondrites“. In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.755.
Der volle Inhalt der QuelleBickford, M. E., Kent C. Condie, Barry B. Hanan, Paul A. Mueller, G. D. Kamenov und Arend Meijer. „CRUSTAL EVOLUTION OF SOUTHERN LAURENTIA DURING THE MAZATZAL OROGENY: NEW EVIDENCE FROM HF ISOTOPIC COMPOSITIONS OF PLUTONIC AND DETRITAL ZIRCONS AND SM-ND COMPOSITIONS OF THE PINAL SCHIST“. In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-299030.
Der volle Inhalt der QuelleBerichte der Organisationen zum Thema "Sm-Nd isotope composition"
Berman, R. G., B. E. Taylor, W. J. Davis, M. Sanborn-Barrie und J B Whalen. Crustal architecture and evolution of the central Thelon tectonic zone, Nunavut: insights from Sm-Nd and O isotope analysis, U-Pb zircon geochronology, and targeted bedrock mapping. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332497.
Der volle Inhalt der QuelleRoddick, J. C., R. W. Sullivan und F. O. Dudas. Precise Calibration of Tracer Compositions For Sm - Nd Isotopic Studies. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/132926.
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