Relevant bibliographies by topics / 86Sr e 143Nd

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  2. Dissertations / Theses
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Academic literature on the topic '86Sr e 143Nd'

Author: Grafiati
Published: 7 September 2021
Last updated: 29 July 2025

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Journal articles on the topic "86Sr e 143Nd"

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Huang, De Zhi, Xian Ying Wang, Guo Ming Li, et al. "Samarium-Neodymium and Strontium Systematics Applied to Calcite Veins in Dabashan Thrust and Fold Belt in China: Dating and Tracing of the Fluid." Advanced Materials Research 455-456 (January 2012): 1552–60. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.1552.

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Dabashan Thrust and Fold Belt is situated in the transfer zone between Qinling Orogen and Sichuan Basin, where multi-generation calcite veins were developed. Two kinds of veins, bedding-parallel and fracture-filled veins, were collected for analyses of rare-earth elements (REE), samarium-neodymium and strontium isotopes. The total REE contents of the calcites from the bedding-parallel vein are much higher than those from fracture-filled veins and are rich in light REE (LREE). The chondrite-normalized patterns of REE curves of the calcites from fracture-filled veins are flatten. The 87Sr/86Sr a
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Spišiak, Ján, Anna Vozárová, Jozef Vozár, Štefan Ferenc, Viera Šimonová, and Juraj Butek. "Implication of Mineralogy and Isotope Data on the Origin of the Permian Basic Volcanic Rocks of the Hronicum (Slovakia, Western Carpathians)." Minerals 11, no. 8 (2021): 841. http://dx.doi.org/10.3390/min11080841.

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The paper presents new geochemical data of the basic to intermediate volcanic rocks from the Hronic unit. The studied rocks are strongly altered and the primary mineral composition (clinopyroxenes, amphiboles, spinels, biotites, and plagioclases) is preserved only in some localities. The clinopyroxene corresponds to augite and primary amphiboles to pargasites. Spinels have a chemical composition similar to spinels from volcanic rocks. According to chemical composition, the studied basalts correspond to rift-related continental tholeiites. 143Nd/144Nd vs. 87Sr/86Sr isotopic ratios of the basalt
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Bertram, C. J., H. Elderfield, R. J. Aldridge, and S. Conway Morris. "87Sr/86Sr,143Nd/144Nd and REEs in Silurian phosphatic fossils." Earth and Planetary Science Letters 113, no. 1-2 (1992): 239–49. http://dx.doi.org/10.1016/0012-821x(92)90222-h.

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Fallick, A. E., and P. J. Hamilton. "The isotopic geochemistry of ocean waters through time." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 80, no. 3-4 (1989): 177–81. http://dx.doi.org/10.1017/s0263593300028613.

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ABSTRACTThere is a general consensus that the global chemistry of ocean water has not changed markedly during the Phanerozoic. Nevertheless, significant changes have occurred in the geochemical cycles of some elements and patterns of change have been reconstructed, in various forms, through consideration of the isotope ratios 13C/12C, 34S/32S, 87Sr/86Sr and 143Nd/144Nd. There have also been attempts to constrain variations in the isotopic composition of sea water itself through measurements of D/H and 18O/16O, the latter both directly and indirectly. Dissolved constituents in seawater display
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Ronkin, Yu L., I. S. Chashchukhin, and V. N. Puchkov. "Spinel lherzolites of the Northern Kraka massif (Southern Urals): first REE ID-ICP-MS,87Sr/86Sr AND147Sm-143Nd AL ID-TIMS isotope constrains." Доклады Российской академии наук. Науки о Земле 514, no. 1 (2024): 77–88. http://dx.doi.org/10.31857/s2686739724010092.

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The results of a REE ID-ICP-MS,86Sr/87Sr and147Sm-143Nd AL ID-TIMS study of the isotope systematics of spinel lherzolites from the northern Kraka massif, which is part of the largest (more than 900 km2) lherzolite allochthon thrust over the bathyal and shelf deposits of the passive continental margin, East European platform are presented. As a result, an isochron dependence (MSWD = 0.85) was revealed for the first time, which determines the age of 545±26 Ma and the high value of the initial ratio (143Nd/144Nd)0 = 0.512390±0.000054, corresponding, within the framework of model representations,
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Verma, Surendra P., and James F. Luhr. "Sr-Nd-Pb isotope and trace element geochemistry of calc -alkaline andesites from Volcán Colima, Mexico." Geofísica Internacional 32, no. 4 (1993): 617–31. http://dx.doi.org/10.22201/igeof.00167169p.1993.32.4.607.

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Se reportan los datos de elementos traza y las composiciones isotópicas de Sr, Nd y Pb en andesitas calco-alcalinas del Volcán Colima y se comparan con otros centros volcánicos del Cinturón Volcánico Mexicano. Los patrones de elementos de Tierras Raras normalizados con respecto a condritas demuestran un enriquecimiento en Tierras Raras ligeras y anomalías despreciables de Eu. Otros diagramas multi-elementos normalizados con respecto a MORB y manto "primitivo" demuestran anomalías negativas de Ta y Ti en las andesitas de Colima. Las relaciones isotópicas varían de 0.70355-0.70358 para 87Sr/86Sr
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Soloshenko, N. G., M. V. Streletskaya, M. V. Chervyakovskaya, and 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, no. 2 (2024): 364–75. http://dx.doi.org/10.24930/1681-9004-2024-24-2-364-375.

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Research subject. AGV-2 and BHVO-2 geochemical reference materials for studying the Sm, Nd and Rb, Sr isotope systems along with various rocks and mineral samples. Materials and Methods. An analysis of the isotopic composition of Sm, Nd and Rb, Sr was carried out using Neptune Plus and Triton Plus mass spectrometers. Aim. To implement analytical techniques for the isotopic composition of Sm and Nd, Rb, and Sr in various rock and mineral samples using two types of multicollector mass spectrometers – inductively coupled plasma NeptunePlus and thermal ionization TritonPlus (Thermo-Fisher), as wel
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Skála, Roman, Jaromír Ulrych, Lukáš Ackerman, et al. "Upper Cretaceous to Pleistocene melilitic volcanic rocks of the Bohemian Massif: petrology and mineral chemistry." Geologica Carpathica 66, no. 3 (2015): 197–216. http://dx.doi.org/10.1515/geoca-2015-0020.

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Abstract Upper Cretaceous to Pleistocene volcanic rocks of the Bohemian Massif represent the easternmost part of the Central European Volcanic Province. These alkaline volcanic series include rare melilitic rocks occurring as dykes, sills, scoria cones and flows. They occur in three volcanic periods: (i) the Late Cretaceous to Paleocene period (80–59 Ma) in northern Bohemia including adjacent territories of Saxony and Lusatia, (ii) the Mid Eocene to Late Miocene (32.3–5.9 Ma) period disseminated in the Ohře Rift, the Cheb–Domažlice Graben, Vogtland, and Silesia and (iii) the Early to Late Plei
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Mora, J. C., J. L. Macías, A. García-Palomo, et al. "Petrology and geochemistry of the Tacana Volcanic Complex, Mexico-Guatemala: Evidence for the last 40 000 yr of activity." Geofísica Internacional 43, no. 3 (2004): 331–59. http://dx.doi.org/10.22201/igeof.00167169p.2004.43.3.963.

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El Complejo Volcanico Tacaná (CVT) se localiza en el límite entre México y Guatemala y descansa sobre rocas metamórficas Mesozoicas e ígneas Terciarias. El CVT consiste de tres edificios volcanicos alineados de NE a SO que son Chichuj, Tacaná y San Antonio. El volcán Chichuj se encuentra constituido principalmente por flujos de lavas de composición andesftica (59-63 wt.% SiO2). El edificio del Tacanná está constituido por flujos de lava de composición basáltico-andesitica (56-61 wt% SiO2) y por domos de andesítica y dacítica (61-64 wt.% SiO2). Los flancos del edificio está cubiertos por depósi
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Ронкин, Ю. Л., И. В. Семенов та В. Н. Пучков. "RB-SR- И 147SM-143ND-СИСТЕМАТИКА ГАББРО И ДОЛЕРИТОВ ИЗ ФРАГМЕНТОВ ОФИОЛИТОВОЙ АССОЦИАЦИИ СРЕДНЕГО УРАЛА, "Доклады Академии наук"". Доклады Академии Наук, № 2 (2017): 204–10. http://dx.doi.org/10.7868/s0869565217320159.

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Рассмотрены результаты Rb-Sr-, 147Sm-143Nd-датирования комплекса параллельных долеритовых даек и пород Платиноносного пояса Урала в Тагильском сегменте палеоокеанической спрединговой структуры среднего Урала. Rb-Sr-систематика для габбро выявляет эррохронные зависимости, определяющие возрасты 415 и 345 млн лет при (87Sr/86Sr)0 0,70385±0,00068 и 0,7029±0,0010, соответственно.Изохронные 147Sm-143Nd-датировки демонстрируют определённое совпадение хронометрических возрастов долеритов дайкового комплекса (426±54; 426±34; 424±19 млн лет) и габбро самого Ревдинского габбро-гипербазитового массива (43
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Dissertations / Theses on the topic "86Sr e 143Nd"

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Portela, Luís Pedro de Castro Figueiredo. "As rochas graníticas da região do Caramulo: novos dados petrográficos, geoquímicos e isotópicos." Master's thesis, 2018. http://hdl.handle.net/10773/25826.

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O plutonito do Caramulo é um maciço granítico implantado em metassedimentos do Complexo Xisto-Grauváquico na Zona Centro-Ibérica, durante a última fase de deformação varisca. Compreende quatro unidades principais de granitos moscovítico-biotíticos (granito do Caramulo, granito de Almijofa, granito de Macieira de Alcoba e granito de Paredes), que se distinguem entre si pelo tamanho de grão, proporções relativas dos seus constituintes minerais e abundância e dimensão dos megacristais de feldspato potássico. No que tange à sua composição mineralógica, verificou-se que não existem diferenç
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Book chapters on the topic "86Sr e 143Nd"

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Rideout, M. L., and J. G. Schilling. "Rare-Earth Elements, 87Sr/86Sr, and 143Nd/144Nd Mantle Source Variations." In Initial Reports of the Deep Sea Drilling Project. U.S. Government Printing Office, 1985. http://dx.doi.org/10.2973/dsdp.proc.82.124.1985.

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Bełka, Zdzisław. "Proweniencja ludności pochowanej na cmentarzysku oraz form odlewniczych z późnej epoki brązu na podstawie analizy izotopów strontu i neodymu / Provenance of the individuals buried at the Late Bronze Age cemetery and of the casting moulds in light of analyses of strontium and neodymium isotopes." In Gogolin-Strzebniów, stanowisko 12. Cmentarzysko kultury łużyckiej na Wyżynie Śląskiej. Wydawnictwo i Pracownia Archeologiczna Profil-Archeo, 2021. http://dx.doi.org/10.33547/oda-sah.11.gog.10.

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Strontium isotope ratios (87Sr/86Sr) were applied to investigate provenance of the Bronze Age population buried at cemetery in Gogolin-Strzebniów. The study used 12 samples: two human enamel samples from inhumation graves and ten samples of petrous part of temporal bone from cremation burials. Baseline information on the local Sr isotope composition was established on geological data. The human samples of ten individuals yielded a quite narrow range of Sr isotope signatures, from 0.7112 to 0.7121 (Table 1; Fig. 1). The obtained results indicate that these individuals have 87Sr/86Sr values whic
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Egeberg, P. K., A. O. Brunfelt, and A. S. Stabel. "Characterization and Correlation of Megascopic Tephras in Site 792 Cores from the Izu-Ogasawara Forearc Basin (Japan) by Trace Elements and 87Sr/86Sr and 143Nd/144Nd Isotopes." In Proceedings of the Ocean Drilling Program, 126 Scientific Results. Ocean Drilling Program, 1992. http://dx.doi.org/10.2973/odp.proc.sr.126.149.1992.

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Conference papers on the topic "86Sr e 143Nd"

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Nara, Fumiko, and Yoshihiro Asahara. "Isotopic characterization (87Sr/86Sr and 143Nd/144Nd) of the distal tephras (B-Tm and To-a) from the lake sediment core (Tohoku region, northern Japan)." In Goldschmidt2022. European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.9682.

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