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Journal articles on the topic 'Nd isotopes'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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1

Wu, Li, Ling, et al. "Further Characterization of the RW-1 Monazite: A New Working Reference Material for Oxygen and Neodymium Isotopic Microanalysis." Minerals 9, no. 10 (2019): 583. http://dx.doi.org/10.3390/min9100583.

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The oxygen (O) and neodymium (Nd) isotopic composition of monazite provides an ideal tracer of metamorphism and hydrothermal activity. Calibration of the matrix effect and monitoring of the external precision of monazite O–Nd isotopes with microbeam techniques, such as secondary ion mass spectrometry (SIMS) and laser ablation-multicollector-inductively coupled plasma-mass spectrometry (LA-MC-ICPMS), require well-characterized natural monazite standards for precise microbeam measurements. However, the limited number of standards available is impeding the application of monazite O–Nd isotopes. H

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2

Vezinet, Adrien, Emilie Thomassot, Yan Luo, Chiranjeeb Sarkar, and D. Graham Pearson. "Diachronous Redistribution of Hf and Nd Isotopes at the Crystal Scale—Consequences for the Isotopic Evolution of a Poly-Metamorphic Crustal Terrane." Geosciences 12, no. 1 (2022): 36. http://dx.doi.org/10.3390/geosciences12010036.

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In metamorphic rocks, mineral species react over a range of pressure–temperature conditions that do not necessarily overlap. Mineral equilibration can occur at varied points along the metamorphic pressure–temperature (PT) path, and thus at different times. The sole or dominant use of zircon isotopic compositions to constrain the evolution of metamorphic rocks might then inadvertently skew geological interpretations towards one aspect or one moment of a rock’s history. Here, we present in-situ U–Pb/Sm–Nd isotope analyses of the apatite crystals extracted from two meta-igneous rocks exposed in t

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van de Flierdt, Tina, Alexander M. Griffiths, Myriam Lambelet, Susan H. Little, Torben Stichel, and David J. Wilson. "Neodymium in the oceans: a global database, a regional comparison and implications for palaeoceanographic research." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2081 (2016): 20150293. http://dx.doi.org/10.1098/rsta.2015.0293.

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The neodymium (Nd) isotopic composition of seawater has been used extensively to reconstruct ocean circulation on a variety of time scales. However, dissolved neodymium concentrations and isotopes do not always behave conservatively, and quantitative deconvolution of this non-conservative component can be used to detect trace metal inputs and isotopic exchange at ocean–sediment interfaces. In order to facilitate such comparisons for historical datasets, we here provide an extended global database for Nd isotopes and concentrations in the context of hydrography and nutrients. Since 2010, combin

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4

Jo, Hui Je, Hyo Min Lee, Go-Eun Kim, Won Myung Choi, and Taehoon Kim. "Determination of Sr–Nd–Pb Isotopic Ratios of Rock Reference Materials Using Column Separation Techniques and TIMS." Separations 8, no. 11 (2021): 213. http://dx.doi.org/10.3390/separations8110213.

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Thermal ionization mass spectrometry (TIMS) can provide highly accurate strontium (Sr), neodymium (Nd), and lead (Pb) isotope measurements for geological and environmental samples. Traces of these isotopes are useful for understanding crustal reworking and growth. In this study, we conducted a sequential separation of Sr, Nd, and Pb and subsequently measured the 87Sr/86Sr, 143Nd/144Nd, 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb ratios of 13 widely used rock certified reference materials (CRMs), namely BCR-2, BHVO-2, GSP-2, JG-1a, HISS-1, JLk-1, JSd-1, JSd-2, JSd-3, LKSD-1, MAG-1, SGR-1, and 435

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5

Viehmann, Sebastian. "Hf-Nd Isotopes in Archean Marine Chemical Sediments: Implications for the Geodynamical History of Early Earth and Its Impact on Earliest Marine Habitats." Geosciences 8, no. 7 (2018): 263. http://dx.doi.org/10.3390/geosciences8070263.

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The Hf-Nd isotope systems are coupled in magmatic systems, but incongruent Hf weathering (‘zircon effect’) of the continental crust leads to a decoupling of the Hf-Nd isotope systems in low-temperature environments during weathering and erosion processes. The Hf-Nd isotope record was recently dated back from the Cenozoic oceans until the Archean, showing that both isotope systems were already decoupled in seawater 2.7 Ga ago and potentially 3.4 Ga and 3.7 Ga ago. While there might have existed a hydrothermal pathway for Hf into Archean seawater, incongruent Hf weathering of more evolved, zirco

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6

Abbott, April N., Brian A. Haley, Aradhna K. Tripati, and Martin Frank. "Constraints on ocean circulation at the Paleocene–Eocene Thermal Maximum from neodymium isotopes." Climate of the Past 12, no. 4 (2016): 837–47. http://dx.doi.org/10.5194/cp-12-837-2016.

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Abstract. Global warming during the Paleocene–Eocene Thermal Maximum (PETM) ∼ 55 million years ago (Ma) coincided with a massive release of carbon to the ocean–atmosphere system, as indicated by carbon isotopic data. Previous studies have argued for a role of changing ocean circulation, possibly as a trigger or response to climatic changes. We use neodymium (Nd) isotopic data to reconstruct short high-resolution records of deep-water circulation across the PETM. These records are derived by reductively leaching sediments from seven globally distributed sites to reconstruct past deep-ocean circ

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7

PE-PIPER, GEORGIA, and DAVID J. W. PIPER. "Late Cenozoic, post-collisional Aegean igneous rocks: Nd, Pb and Sr isotopic constraints on petrogenetic and tectonic models." Geological Magazine 138, no. 6 (2001): 653–68. http://dx.doi.org/10.1017/s0016756801005957.

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Nd isotopic composition has been determined for 16 igneous rocks, representing the wide geochemical, spatial and temporal range of post-collisional, late Cenozoic magmas in the Aegean area. Nd isotopes are used to further interpret previously published Pb and Sr isotope data. The overall pattern of late Cenozoic volcanism resulted from rapid extension, with thermal effects causing melting of hydrated, enriched, subcontinental lithosphere to produce widespread K-rich magmas. Slab break-off and intrusion of hot asthenosphere caused partial melting of rift-related continental margin basalts at th

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8

Zhang, Bang-Lu, Zhi-Cheng Lv, Zhi-Guo Dong, et al. "Source Characteristics of the Carboniferous Ortokarnash Manganese Deposit in the Western Kunlun Mountains." Minerals 12, no. 7 (2022): 786. http://dx.doi.org/10.3390/min12070786.

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The specific source of ancient sedimentary manganese (Mn) deposits is commonly complex. Here we use systematic major and trace element data with strontium (Sr) and neodymium (Nd) isotopic analyses of the Ortokarnash Mn(II) carbonate ores and associated carbonate rocks from the Upper Carboniferous Kalaatehe Formation (ca. 320 Ma) in order to constrain the Mn source. This formation consists of three members: the first member is a volcanic breccia limestone, the second member is a sandy limestone, and the third member is a black marlstone with the Mn(II) carbonate interlayers. Petrographic observ

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9

Qasim, Hussein N., and Falih H. Al-Khudair. "Structure of the low-lying positive and negative parity states in even–even 144−154Nd isotopes." International Journal of Modern Physics E 28, no. 12 (2019): 1950107. http://dx.doi.org/10.1142/s0218301319501076.

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The low-lying positive and negative parity states of even–even [Formula: see text]Nd isotopes are studied using the interacting boson model (IBM). The negative parity states are involved within the IBM model by adding a single angular momentum ([Formula: see text]) boson with intrinsic negative parity [Formula: see text]-boson to [Formula: see text] and [Formula: see text]-bosons model space. For these nuclei, the potential energy surfaces [Formula: see text], transition probability [Formula: see text], [Formula: see text] and [Formula: see text] are calculated. Phase transition from the [Form

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10

Robinson, Suzanne, Ruza F. Ivanovic, Lauren J. Gregoire, et al. "Simulating marine neodymium isotope distributions using Nd v1.0 coupled to the ocean component of the FAMOUS–MOSES1 climate model: sensitivities to reversible scavenging efficiency and benthic source distributions." Geoscientific Model Development 16, no. 4 (2023): 1231–64. http://dx.doi.org/10.5194/gmd-16-1231-2023.

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Abstract. The neodymium (Nd) isotopic composition of seawater is a widely used ocean circulation tracer. However, uncertainty in quantifying the global ocean Nd budget, particularly constraining elusive non-conservative processes, remains a major challenge. A substantial increase in modern seawater Nd measurements from the GEOTRACES programme, coupled with recent hypotheses that a seafloor-wide benthic Nd flux to the ocean may govern global Nd isotope distributions (εNd), presents an opportunity to develop a new scheme specifically designed to test these paradigms. Here, we present the impleme

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Bonev, Nikolay, Zornitsa Dotseva, and Massimo Chiaradia. "Comparative Nd-Sr-Pb isotopes geochemistry of the eastern Circum-Rhodope belt ophiolitic mafic suites, Greece-Bulgaria." Review of the Bulgarian Geological Society 83, no. 3 (2022): 69–72. http://dx.doi.org/10.52215/rev.bgs.2022.83.3.69.

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We report on the isotopic compositions of the Jurassic supra-subduction zone Evros ophiolite mafic rocks exposed in the eastern Circum-Rhodope Belt in the Thrace region of northeastern Greece. These mafic units consist of low-Ti gabbroic and basaltic rocks, which Nd-Sr-Pb isotopes are compatible with dominant mantle-derived Mid-Ocean Ridge Basalt (MORB) component mixed with a detectable amount of crustal material and/or sediment involved in their melt source in the subduction zone. These isotopic features are consistent with an intra-oceanic arc origin of the mafic ophiolite rocks, and the Evr

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12

Gudelius, Dominik, Sonja Aulbach, Hans-Michael Seitz, and Roberto Braga. "Crustal fluids cause strong Lu-Hf fractionation and Hf-Nd-Li isotopic provinciality in the mantle of continental subduction zones." Geology 50, no. 2 (2021): 163–68. http://dx.doi.org/10.1130/g49317.1.

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Abstract Metasomatized mantle wedge peridotites exhumed within high-pressure terranes of continental collision zones provide unique insights into crust-mantle interaction and attendant mass transfer, which are critical to our understanding of terrestrial element cycles. Such peridotites occur in high-grade gneisses of the Ulten Zone in the European Alps and record metasomatism by crustal fluids at 330 Ma and high-pressure conditions (2.0 GPa, 850 °C) that caused a transition from coarse-grained, garnet-bearing to fine-grained, amphibole-rich rocks. We explored the effects of crustal fluids on

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13

Lattoofi, Nabeel F., and Ali A. Alzubadi. "Study of giant dipole resonances for neodymium isotopes with an exciton model." International Journal of Modern Physics E 29, no. 10 (2020): 2050084. http://dx.doi.org/10.1142/s0218301320500846.

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The partial photonuclear [Formula: see text], pn) and [Formula: see text] and the total photonuclear cross-sections (the giant dipole resonance (GDR)) have been investigated theoretically for neodymium isotopes, namely [Formula: see text]Nd, using framework of the EMPIRE 3.2.2 code. The energy, width and cross-section parameters of the GDR used in our calculations have been investigated in this paper depending on the deformation parameters of nuclei. The calculated results have been compared with the experimental data and with those calculated using Lorentzian fitting parameters. Our calculati

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14

Alatarvas, Raisa, Ninna Immonen, and Kari Strand. "Clay mineral and Nd, Pb, and Sr isotope provenance of a MIS 4-3 sediment record from the Lomonosov Ridge, central Arctic Ocean." Bulletin of the Geological Society of Finland 95, no. 1 (2023): 35–46. http://dx.doi.org/10.17741/bgsf/95.1.003.

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Modern techniques for detrital mineral provenance were applied to sediment core 96/12-1pc from the Lomonosov Ridge in the central Arctic Ocean. The techniques include quantitative clay mineralogy analysis combined with determination of Nd, Pb, and Sr isotopes from clay fraction. The clay mineral assemblage and the isotope signatures depict distinct changes during the Marine Isotope Stage (MIS) 4-3 transition corresponding to the Middle Weichselian deglaciation. This transition is characterised by a homogenous, 48 cm thick, dark grey, silty clay layer with a distinctive IRD concentration, formi

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15

Kay, R. W., J. L. Rubenstone, and S. Mahlburg Kay. "Aleutian terranes from Nd isotopes." Nature 322, no. 6080 (1986): 605–9. http://dx.doi.org/10.1038/322605a0.

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16

Nasef, Dalenda, Najat S. Eshaftri Eshaftri, Ayad Ezwam Ezwam, Suad M. Bogrin Bogrin, Asma A. Elbendag Elbendag, and Sadiq M. El-kadi El-kadia. "Structural evolution in 146–158 Nd isotopes using IBM-2 Hamiltonian." Journal of Pure & Applied Sciences 20, no. 2 (2021): 171–75. http://dx.doi.org/10.51984/jopas.v20i2.1597.

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Neodymium isotopes (Z=60) lie in the traditional rotational to transitional-spherical region that occurs at the range of deformed nuclei. The identity of 146−158 Neodymium nuclei have been determined in framework of Interacting Boson Model-2, a simulation program with NPBOS has been built to obtain the theoretical energy levels for Neodymium isotopes. The parameters of the best fit to the measured data are determined. The energy positive parity bands of those isotopes were calculated using (IBM-2) and then it compared with the experimental values. The mentioned isotopes ratios have calcu

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17

SHENG, ZONG-QIANG, and JIAN-YOU GUO. "SYSTEMATIC ANALYSIS OF CRITICAL POINT NUCLEI IN THE RARE-EARTH REGION WITH RELATIVISTIC MEAN FIELD THEORY." Modern Physics Letters A 20, no. 35 (2005): 2711–21. http://dx.doi.org/10.1142/s0217732305017883.

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The shape phase transition between spherical U (5) and axially deformed SU (3) nuclei is investigated systemically for the rare-earth region nuclei by the constrained relativistic mean field theory with the interactions NL3. The properties of ground state for Nd , Gd and Dy isotopes are described fairly well as compared with experiments. By examining the potential energy curve and quadruple deformation β2 obtained with this microscopic approach, the possible critical point nuclei are suggested to be 148,150 Nd for Nd isotopes, but 148 Nd is the best candidate, and 150 Nd is slightly to the rot

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18

Rosner, S. D., D. Masterman, T. J. Scholl, and R. A. Holt. "Measurement of hyperfine structure and isotope shifts in Nd II." Canadian Journal of Physics 83, no. 8 (2005): 841–54. http://dx.doi.org/10.1139/p05-029.

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The high-resolution spectra of 110 transitions in Nd II over the range 418465 nm were observed using the collinear fast-ion-beam/laser method (FIBLAS). The lower states of these transitions include the ground state and 10 metastable even-parity states with energies up to 5986 cm1. The 64 odd-parity upper states have energies up to 29 434 cm1. For each transition isotope shifts were measured for all the stable isotopes (mass numbers 142, 143, 144, 145, 146, 148, and 150), as well as hyperfine parameters for the two odd-mass-number isotopes. These quantities are important in modeling profiles

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19

Sun, Xiang, Yongjun Lu, Qiang Li, and Ruyue Li. "A Downgoing Indian Lithosphere Control on Along-Strike Variability of Porphyry Mineralization in the Gangdese Belt of Southern Tibet." Economic Geology 116, no. 1 (2020): 29–46. http://dx.doi.org/10.5382/econgeo.4768.

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Abstract The E-trending Gangdese porphyry copper belt in southern Tibet is a classic example of porphyry mineralization in a continental collision zone. New zircon U-Pb geochronological, zircon Hf-O, and bulk-rock Sr-Nd isotope data for the Miocene mineralizing intrusions from the Qulong, Zhunuo, Jiru, Chongjiang, and Lakange porphyry copper deposits and Eocene igneous rocks from the western Gangdese belt, together with literature data, show that both Paleocene-Eocene igneous rocks and Miocene granitoids exhibit coupled along-arc isotopic variations, characterized by bulk-rock ɛNd(t) and zirco

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20

Jin, Luying, Kezhang Qin, Guangming Li, et al. "Formation of the Chalukou High Fluorine-Type Mo (–Zn–Pb) Deposit, NE China: Constraints from Fluorite and Sphalerite Rare Earth Elements and Sr–Nd Isotope Compositions." Minerals 13, no. 1 (2023): 77. http://dx.doi.org/10.3390/min13010077.

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Fluorite is a widespread mineral in porphyry and hydrothermal vein Mo-polymetallic deposits. Here, fluorite is utilised as a probe to trace the fluid source and reveal the fluid evolution process in the Chalukou giant Mo (Pb‒Zn) deposit, Northeast China, which is characterised as early porphyry Mo and later vein-style Zn–Pb mineralisation. A detailed rare earth element (REE) and Sr–Nd isotope study of fluorite combined with Sr isotopes of sphalerite is conducted for the Chalukou deposit. The chondrite-normalised REE patterns of fluorites from molybdenite veins show light REE (LREE)-enriched pa

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Ouhachi, M., M. R. Oudih, M. Fellah, and N. H. Allal. "Nuclear structure and decay properties of Nd isotopes." International Journal of Modern Physics E 27, no. 07 (2018): 1850059. http://dx.doi.org/10.1142/s0218301318500593.

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Using the Hartree–Fock–Bogoliubov mean-field theory, the ground-state structural and decay properties of Nd isotopes are investigated from the proton-rich side up to the neutron drip-line. Quantities such as binding energies per nucleon, one and two-neutron separation energies, rms charge radii, and quadrupole deformation parameters have been calculated. Compared with the relativistic mean-field results, the present calculations are in better agreement with the available experimental data. The results show clearly the signature of a shape transition at [Formula: see text] and an abrupt increas

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Hindshaw, Ruth S., Nicholas J. Tosca, Alexander M. Piotrowski, and Edward T. Tipper. "Clay mineralogy, strontium and neodymium isotope ratios in the sediments of two High Arctic catchments (Svalbard)." Earth Surface Dynamics 6, no. 1 (2018): 141–61. http://dx.doi.org/10.5194/esurf-6-141-2018.

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Abstract. The identification of sediment sources to the ocean is a prerequisite to using marine sediment cores to extract information on past climate and ocean circulation. Sr and Nd isotopes are classical tools with which to trace source provenance. Despite considerable interest in the Arctic Ocean, the circum-Arctic source regions are poorly characterised in terms of their Sr and Nd isotopic compositions. In this study we present Sr and Nd isotope data from the Paleogene Central Basin sediments of Svalbard, including the first published data of stream suspended sediments from Svalbard. The s

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23

Li, Yihong, Shanshan Wang, Yu Yan, Jinpei Yan, Ruilian Yu, and Gongren Hu. "Characteristics and Provenance Implications of Rare Earth Elements and Nd Isotope in PM2.5 in a Coastal City of Southeastern China." Atmosphere 13, no. 9 (2022): 1367. http://dx.doi.org/10.3390/atmos13091367.

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The source apportionment of fine particulate matters, especially PM2.5, has drawn great attention worldwide. Since rare earth elements (REEs) and Nd isotopes can serve as source tracers, in this study, the characteristics and provenance implications of REEs and Nd isotopes in PM2.5 of four seasons in Xiamen city, China, were investigated. The range of the ratios of ΣREE to PM2.5 was 1.04 × 10−5 to 8.06 × 10−4, and the mean concentration of REEs in PM2.5 were in the order of spring > autumn > winter > summer. According to the geoaccumulation index (Igeo), spring was the season in which

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Kriswarini, Rosika, Noviarty Noviarty, Erlina Noerpitasari, and Arif Nugroho. "Effect of CsNO<sub>3</sub> on Neodymium (Nd) and Cesium (Cs) Recovery in Nuclear Fuel Using Precipitation Method." Materials Science Forum 1093 (July 21, 2023): 127–32. http://dx.doi.org/10.4028/p-pyz39c.

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The addition of CsNO3 against Nd and Cs recovery in nuclear fuel using the precipitation method has been carried out. Precipitation methods have been carried out by previous researchers to separate cesium in U3Si2/Al and UMo/Al nuclear fuels. The recovery of cesium in the nuclear fuel obtained was more than 95%. After got optimal recovery for Cs separation, in this research would use the method for Nd separation. Beside the Cs isotope, the Nd isotope was the result of fission product after the radiation process of nuclear fuel in nuclear reactor. Both isotopes were used as burn-up indicators.

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25

Falloon, Trevor J., Kaj Hoernle, Bruce F. Schaefer, et al. "Petrogenesis of Lava from Christmas Island, Northeast Indian Ocean: Implications for the Nature of Recycled Components in Non-Plume Intraplate Settings." Geosciences 12, no. 3 (2022): 118. http://dx.doi.org/10.3390/geosciences12030118.

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Lava samples from the Christmas Island Seamount Province (CHRISP) record an extreme range in enriched mantle (EM) type Sr-Nd-Pb-Hf isotope signatures. Here we report osmium isotope data obtained on four samples from the youngest, Pliocene petit-spot phase (Upper Volcanic Series, UVS; ~4.4 Ma), and four samples from the earlier, Eocene (Lower Volcanic Series, LVS; ~40 Ma) shield building phase of Christmas Island. Osmium concentrations are low (5–82 ppt) with initial Os isotopic values (187Os/188Osi) ranging from (0.1230–0.1679). Along with additional new geochemical data (major and trace eleme

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Santhosh, K. P., R. K. Biju, Sabina Sahadevan, and Antony Joseph. "Exotic decay in proton-rich Nd isotopes." Physica Scripta 77, no. 6 (2008): 065201. http://dx.doi.org/10.1088/0031-8949/77/06/065201.

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Buck, B., A. C. Merchant, and S. M. Perez. "Exotic clustering in Ce and Nd isotopes." Nuclear Physics A 657, no. 3 (1999): 267–79. http://dx.doi.org/10.1016/s0375-9474(99)00342-5.

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Pe-Piper, Georgia, and David JW Piper. "Geochemical evolution of Devonian-Carboniferous igneous rocks of the Magdalen basin, Eastern Canada: Pb- and Nd-isotope evidence for mantle and lower crustal sources." Canadian Journal of Earth Sciences 35, no. 3 (1998): 201–21. http://dx.doi.org/10.1139/e97-106.

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Magmatism associated with the extensional Magdalen basin includes voluminous tholeiitic gabbro and basalt and local granite and rhyolite. Pb- and (or) Nd-isotope determinations have been made on 70 igneous rocks from throughout the basin, and a further 15 samples of Avalonian basement from the southern margin of the basin, to characterize the contribution of lower crustal blocks and mantle sources to the magmatism and to constrain tectonic models for the basin. Five phases of magmatic evolution are distinguished in the Magdalen basin. (1) Middle to Late Devonian partial melting of lithospheric

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Huang, Chao, Yue-Heng Yang, Jin-Hui Yang, and Lie-Wen Xie. "In situ simultaneous measurement of Rb–Sr/Sm–Nd or Sm–Nd/Lu–Hf isotopes in natural minerals using laser ablation multi-collector ICP-MS." Journal of Analytical Atomic Spectrometry 30, no. 4 (2015): 994–1000. http://dx.doi.org/10.1039/c4ja00449c.

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This study presents a combined methodology of simultaneously measuring Rb–Sr/Sm–Nd or Sm–Nd/Lu–Hf isotopes in natural minerals by a means of two multiple collector inductively coupled plasma mass spectrometers connected to a 193 nm excimer laser ablation system.

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Linghu, Miaomiao, Zimu Li, Jinfeng Sun, and Jiheng Zhang. "Magma Source and Petrogenesis of the Early Cretaceous Granites in The Liaodong Peninsula: Evidence from In Situ Apatite Sr-Nd and Zircon Hf-O Isotopes." Minerals 13, no. 4 (2023): 545. http://dx.doi.org/10.3390/min13040545.

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Apatite Sr-Nd and zircon Hf-O isotopes are broadly used to trace magma sources and constrain magma evolution processes, further improving our understanding of the origin of granitoids. We present zircon U-Pb ages, whole-rock major and trace elements, and whole-rock Sr-Nd-Hf, zircon Hf-O, and apatite Sr-Nd isotopic data for the coarse-grained quartz monzonite, biotite monzogranite, and granite porphyry in the Yushulinzi pluton in the Liaodong Peninsula, the eastern North China Craton, to establish their magma sources and petrogenesis. The coarse-grained quartz monzonite, biotite monzogranite, a

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Bédard, L. Paul, and John N. Ludden. "Nd-isotope evolution of Archaean plutonic rocks in southeastern Superior Province." Canadian Journal of Earth Sciences 34, no. 3 (1997): 286–98. http://dx.doi.org/10.1139/e17-026.

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The Opatica plutonic belt, Abitibi greenstone belt, and Pontiac Subprovince represent a major proportion of the southeastern Superior Province, which was formed and accreted rapidly between approximately 2.9 and 2.8 Ga. Plutons in these belts are grouped into four types: (i) trondhjemite–tonalite–granodiorite (TTG) suite (2.82–2.69 Ga), (ii) monzodiorite (MZD) suite (2.697–2.669 Ga), (iii) late alkaline granitoid (ALK) suite (2.68–2.67 Ga), and (iv) anatectic granite and monzonite (ANA) suite (2.69–2.64 Ga). The four suites are represented in all belts and show similar petrography and geochemi

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Huber, Miłosz A., Stanisław Hałas, Yuri N. Neradovsky, Tamara B. Bayanova, Artem W. Mokrushin, and Lesia Lata. "Stable isotope geochemistry of sulfides from intrusion in Monchegorsk, northern part of Baltic Shield." Geochronometria 43, no. 1 (2016): 96–101. http://dx.doi.org/10.1515/geochr-2015-0034.

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Abstract The sulfide minerals from old mafic intrusion rocks from the Kola Peninsula were analyzed on stable sulfur isotopes. These samples were already dated by the Sm-Nd method. These sulfide samples were evaluated upon a geochemical composition by ICP-MS. The sulfide mineral samples were selected from the main ore-bearing rocks of the Monchetundra layered intrusion. The analyzed sulfides formed several generations of mineralization associated with primary and hydrothermal stage of formation of the deposits. Isotopic studies confirm a few consecutive stages of mineralization. These data were

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Abraham, Anne-Claude, Don Francis, and Mireille Polvé. "Origin of Recent alkaline lavas by lithospheric thinning beneath the northern Canadian Cordillera." Canadian Journal of Earth Sciences 42, no. 6 (2005): 1073–95. http://dx.doi.org/10.1139/e04-092.

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Recent alkaline lavas that have erupted across the disparate terranes of the northern Canadian Cordillera provide natural probes with which to interrogate the underlying lithosphere. The lavas range between two compositional end members, olivine nephelinite (NEPH) and hypersthene-normative olivine (Hy-NORM) basalt. The chemical signature of amphibole in the incompatible element enriched NEPH end member indicates that it is derived in the lithospheric mantle. The Hy-NORM end member is characterized by lower incompatible trace element contents but is still relatively enriched relative to primiti

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Abbott, A. N., B. A. Haley, A. K. Tripati, and M. Frank. "Constraints on ocean circulation at the Paleocene–Eocene Thermal Maximum from neodymium isotopes." Climate of the Past Discussions 11, no. 3 (2015): 2557–83. http://dx.doi.org/10.5194/cpd-11-2557-2015.

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Abstract. Global warming during the Paleocene Eocene Thermal Maximum (PETM) ~55 million years ago (Ma) coincided with a massive release of carbon to the ocean–atmosphere system, as indicated by carbon isotopic data. Previous studies have argued for a role for changing ocean circulation, possibly as a trigger or response to climatic changes. We use neodymium (Nd) isotopic data to reconstruct short high-resolution records of deep-water circulation across the PETM. These records are derived by reductively leaching sediments from seven globally distributed sites and comparing data with published d

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Speziale, Sergio, Francesca Castorina, Paolo Censi, Celso de Barros Gomes, Leila Soares Marques, and Piero Comin-Chiaramonti. "Carbonatites from the southern Brazilian Platform: A review. II: Isotopic evidences." Open Geosciences 12, no. 1 (2020): 678–702. http://dx.doi.org/10.1515/geo-2020-0032.

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AbstractEarly and Late Cretaceous alkaline and alkaline–carbonatitic complexes from southern Brazil are located along the main tectonic lineaments of the South America Platform. Calcium-, magnesium-, and ferrocarbonatites are well represented and frequently associated even in the same complex. Primary carbonates present significant variations in C–O isotopic compositions, which are mainly due to isotope exchange with H2O–CO2-rich hydrothermal fluids, whereas fractional crystallization or liquid immiscibility probably affects the δ18O and δ13C values by no more than 2δ‰. Our isotope exchange mo

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McCoy-West, Alex J., Marc-Alban Millet, Geoff M. Nowell, Oliver Nebel, and Kevin W. Burton. "Simultaneous measurement of neodymium stable and radiogenic isotopes from a single aliquot using a double spike." Journal of Analytical Atomic Spectrometry 35, no. 2 (2020): 388–402. http://dx.doi.org/10.1039/c9ja00308h.

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Plomp, E., I. C. C. von Holstein, J. M. Koornneef та ін. "TIMS analysis of neodymium isotopes in human tooth enamel using 1013Ω amplifiers". Journal of Analytical Atomic Spectrometry 32, № 12 (2017): 2391–400. http://dx.doi.org/10.1039/c7ja00312a.

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Michaelovitch de Mahiques, Michel, Roberto Violante, Paula Franco-Fraguas, et al. "Control of oceanic circulation on sediment distribution in the southwestern Atlantic margin (23 to 55° S)." Ocean Science 17, no. 5 (2021): 1213–29. http://dx.doi.org/10.5194/os-17-1213-2021.

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Abstract. In this study, we interpret the role played by ocean circulation in sediment distribution on the southwestern Atlantic margin using radiogenic Nd and Pb isotopes. The latitudinal trends for Pb and Nd isotopes reflect the different current systems acting on the margin. The utilization of the sediment fingerprinting method allowed us to associate the isotopic signatures with the main oceanographic features in the area. We recognized differences between Nd and Pb sources to the Argentinean shelf (carried by the flow of Subantarctic Shelf Water) and slopes (transported by deeper flows).

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Aleinikoff, John N., G. Lang Farmer, Robert O. Rye, and Warren J. Nokleberg. "Isotopic evidence for the sources of Cretaceous and Tertiary granitic rocks, east-central Alaska: implications for the tectonic evolution of the Yukon-Tanana Terrane." Canadian Journal of Earth Sciences 37, no. 6 (2000): 945–56. http://dx.doi.org/10.1139/e00-006.

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Magnetotelluric traverses across the southern Yukon-Tanana terrane (YTT) reveal the presence of a thick conductive layer (or layers) beneath Paleozoic crystalline rocks. These rocks have been interpreted to be flysch of probable Mesozoic age, on the basis of the occurrence of Jurassic-Cretaceous flysch in the Kahiltna assemblage and Gravina-Nutzotin belt flanking the YTT to the southwest and southeast, respectively. The Pb, Nd, Sr, and O isotopes in Cretaceous and Tertiary granitic rocks that crop out throughout the YTT were measured to determine if these rocks do in fact contain a component o

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Hummadi, Sallama S. "Study of Nuclear Structures for Nd 148,150,152 a Isotopes by Using IBM-1." Al-Mustansiriyah Journal of Science 28, no. 2 (2018): 196. http://dx.doi.org/10.23851/mjs.v28i2.518.

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The nuclear structures of even-even isotopes Nd (A=148,150,152) are studied by using the first Interacting Boson Model (IBM-1). The energy levels of ground state, beta and gamma bands ,energy ratios are calculated. The results showed dynamical symmetry of these isotopes SU(3)- SU(6), SU(5)-SU(6).

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Zaikin, D. A., M. V. Mordovskoy, and I. V. Surkova. "Interaction of low-energy neutrons with Nd isotopes." Bulletin of the Russian Academy of Sciences: Physics 74, no. 11 (2010): 1581–84. http://dx.doi.org/10.3103/s1062873810110183.

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Minkov, N. "Pear-shape Effects in \(^{130-136}\)Nd Isotopes." Acta Physica Polonica B Proceedings Supplement 13, no. 3 (2020): 443. http://dx.doi.org/10.5506/aphyspolbsupp.13.443.

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Gleason, J. D., P. J. Patchett, W. R. Dickinson, and J. Ruiz. "Nd isotopes link Ouachita turbidites to Appalachian sources." Geology 22, no. 4 (1994): 347–50. http://dx.doi.org/10.1130/0091-7613(1994)022<0347:nilott>2.3.co;2.

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Garçon, Marion, Catherine Chauvel, Christian France-Lanord, Pascale Huyghe, and Jérôme Lavé. "Continental sedimentary processes decouple Nd and Hf isotopes." Geochimica et Cosmochimica Acta 121 (November 2013): 177–95. http://dx.doi.org/10.1016/j.gca.2013.07.027.

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SHELLNUTT, J. GREGORY, TUNG-YI LEE, CHIH-CHENG YANG, et al. "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, no. 6 (2015): 1073–84. http://dx.doi.org/10.1017/s0016756815000217.

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AbstractThe Doba gabbro was collected from an exploration well through the Cretaceous Doba basin of southern Chad. The gabbro is composed mostly of plagioclase, clinopyroxene and Fe–Ti oxide minerals and displays cumulus mineral textures. Whole-rock40Ar–39Ar step-heating geochronology yielded a Late Permian plateau age of 257 ± 1 Ma. The major and trace elemental geochemistry shows that the gabbro is tholeiitic in composition and has trace element ratios (i.e. La/YbN> 7; Sm/YbPM> 3.4; Nb/Y > 1; Zr/Y > 5) indicative of a basaltic melt derived from a garnet-bearing mantle source. The

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Huang, Hui, Yaoling Niu, Fang-Zhen Teng, and Shui-Jiong Wang. "Discrepancy between bulk-rock and zircon Hf isotopes accompanying Nd-Hf isotope decoupling." Geochimica et Cosmochimica Acta 259 (August 2019): 17–36. http://dx.doi.org/10.1016/j.gca.2019.05.031.

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Zhang, Songsong, Xiaoyong Yang, and Lei Liu. "Evolution, Magmatic Source and Metallogenesis of A-Type Granites in the Fanchang Volcanic Basin, Middle and Lower Yangtze Metallogenic Belt: A Review." Minerals 13, no. 4 (2023): 571. http://dx.doi.org/10.3390/min13040571.

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The Fanchang volcanic basin (FVB) is located in the Middle and Lower Yangtze Metallogenic Belt (MLYMB) between the ore districts of Ningwu and Tongling. The existing ore deposits in the FVB are relatively small in scale and related to late Mesozoic A-type granites. In this paper, the crystallization age, major and trace element composition, and Sr-Nd and Hf isotope compositions of the A-type granites are summarized from the literature; in addition, the magnetite composition, H and O isotopes of fluid inclusions, and sulfur isotope composition of metal sulfides in some typical ore deposits in t

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Niu, Xiaolu, Yildirim Dilek, Fei Liu, Guangying Feng, and Jingsui Yang. "Early Devonian ultrapotassic magmatism in the North China Craton: geochemical and isotopic evidence for subcontinental lithospheric mantle metasomatism by subducted sediment-derived fluids." Geological Magazine 158, no. 1 (2019): 158–74. http://dx.doi.org/10.1017/s0016756819000797.

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AbstractWe report new U–Pb zircon age data, zircon in situ oxygen isotope, mineral chemistry, whole-rock geochemistry and Sr–Nd isotopic compositions from the Early Devonian ultrapotassic Gucheng pluton in the North China Craton, and discuss its petrogenesis. The Gucheng pluton is exposed in the northern part of the North China Craton and forms a composite intrusion, consisting of K-feldspar-bearing clinopyroxenite, clinopyroxene-bearing syenite and alkali-feldspar syenite. Mineral phases in these lithologies include clinopyroxene (Wo43–48En19–35Fs18–38), sanidine (An0Ab3–11Or89–97), and subor

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Ayer, John A., and Jaroslav Dostal. "Nd and Pb isotopes from the Lake of the Woods greenstone belt, northwestern Ontario: implications for mantle evolution and the formation of crust in the southern Superior Province." Canadian Journal of Earth Sciences 37, no. 12 (2000): 1677–89. http://dx.doi.org/10.1139/e00-067.

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Nd and Pb isotopes from the Lake of the Woods greenstone belt indicate the presence of three distinct reservoir sources: old enriched crust (>3.0 Ga); pre-2.7 Ga, homogeneous depleted mantle; and post-2.70 Ga heterogeneous mantle. EpsilonNd values of +1.1 to +2.3 for ultramafic to felsic metavolcanic rocks (2.742.72 Ga) indicate derivation from depleted mantle. The εNd value of 0.9 for younger turbidite (2.71 Ga), in conjunction with detrital zircon ages ranging from 2.72 to 3.0 Ga, indicates detritus from local greenstone belt sources (depleted mantle) mixed with an older crustal source.

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Li, Jianzhong, Yong Huang, Qingsong Wu, et al. "Petrogenesis of the Qiongduojiang Gabbro in Tethys Himalaya and Its Metallogenetic Implication." Minerals 13, no. 6 (2023): 721. http://dx.doi.org/10.3390/min13060721.

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With the northward subduction and final closure of the Neo-Tethyan oceanic crust, the Indian and Eurasian plates finally collided together and underwent a strong collision orogenic event, resulting in large-scale crust–mantle magmatic interactions. In order to clarify the controversies about tectono-magmatic activities after the Indian–Eurasian continental collision, we report the newly dated Eocene Qiongduojiang gabbro explored in the Tethyan–Himalaya belt, southern Tibet. LA-ICP-MS zircon U-Pb dating shows that the crystallization age of the Qiongduojiang gabbro is 46.1 ± 1.7 Ma. The whole-r

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