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Samarium-neodymium dating uses the radioactive decay of Sm to Nd and Sm to Nd to measure the age of rocks and minerals and to trace and date geochemical processes responsible for the chemical differentiation of the Earth and the terrestrial planets and planetesimals. Introduced to the geochemical and cosmochemical communities in the early s, the Sm-Nd radioactive decay systems have grown into essential tools in geochronology and particularly for the tracing of geochemical processes. As a result, their fractionation from one another during silicate rock melting and crystallization is predictable. In addition, the low solubility of REE in water leads them to be relatively immobile during rock weathering and to precipitate rapidly out of seawater once delivered to the oceans by rivers. For this reason, the Nd isotopic composition of sediments precipitated from seawater, such as manganese nodules Piepgras et al. Because Sm and Nd behave similarly in most geologic processes, are not strongly affected by weathering processes, and diffuse through minerals relatively slowly, the Sm-Nd dating system holds promise of being more resistant to resetting than other dating systems and thus is capable of providing accurate initial formation ages for rocks with complicated metamorphic histories. This promise, in part, has been fulfilled.

Trace element partitioning between plagioclase and melt: investigation of dopant influence on partition behavior.

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Geochimica et Cosmochimica Acta64- Borg, L. Chronological evidence that the Moon is either young or did not have a global magma ocean.

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Nature, Bouvier, A. The Lu-Hf and Sm-Nd isotopic composition of CHUR: constraints from unequilibrated chondrites and implications for the bulk composition of terrestrial planets. Earth and Planetary Science Letters, Boyet, M.

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Science, - A highly depleted moon or a non-magma ocean origin for the lunar crust? Earth and Planetary Science Letters, - Burbidge, E. Synthesis of the elements in stars. Reviews of Modern Physics29- Busso, M. In McWilliam, A. Cambridge: Cambridge University Press, pp. Google Scholar. Carlson, R. Thermal ionization mass spectrometry.

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In McDonough, W. Amsterdam: Elsevier, pp. Short-lived radionuclides as monitors of early crust-mantle differentiation on the terrestrial planets. Columbia River volcanism: the question of mantle heterogeneity or crustal contamination. Geochimica et Cosmochimica Acta45- Chondrite barium, neodymium, and samarium isotopic heterogeneity and early earth differentiation. Chauvel, C. The Sm-Nd age of Kambalda volcanics is Ma too old! Earth and Planetary Science Letters74- Chavagnac, V.

Coesite-bearing eclogites from the Bixiling Complex, Dabie Mountains, China: Sm-Nd ages, geochemical characteristics and tectonic implications. Chemical Geology, Cowan, J.

Advances in r-process nucleosynthesis. DePaolo, D. Sources of continental crust: neodymium isotope evidence from the Sierra Nevada and Peninsular ranges. Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization. Earth and Planetary Science Letters53- Neodymium Isotope Geochemistry: An Introduction.

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Heidelberg: Springer, p. Geophysical Research Letters3- Nd isotopic variations and petrogenetic models. Sm-Nd age of the Stillwater complex and the mantle evolution curve for neodymium. Geochimica et Cosmochimica Acta43- The continental crustal age distribution: methods of determining mantle separation ages from Sm-Nd isotopic data and application to the Southwestern United States. Journal of Geophysical Research96- Ducea, M.

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Sm-Nd dating of spatially controlled domains of garnet single crystals: a new method of high-temperature thermochronology. Earth and Planetary Science Letters, Emsley, J. The Elements. Oxford: Clarendon, p. Eugster, O.

Decay scheme of K-Ar, U-Pb and Sm-Nd, petrogenetic implications-part A

The isotopic composition of Gd and the neutron capture effects in samples from Apollo Earth and Planetary Science Letters8 Friedman, A. Alpha decay half-lives of Gd, Gd and Sm. Radiochimica Acta5- Gallino, R. Neutron capture nucleosynthesis in AGB stars. In Bernatowicz, T. Green, T. SIMS determination of trace element partition coefficients between garnet, clinopyroxene and hydrous basaltic liquids at Lithos53- Hamilton, P.

Sm-Nd dating of Archean basic and ultrabasic volcanics. Earth and Planetary Science Letters36- Hauri, E.

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Experimental and natural partitioning of Th, U, Pb and other trace elements between garnet, clinopyroxene and basaltic melts. Chemical Geology, - Hidaka, H.

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Sm and Gd isotopic shifts of Apollo 16 and 17 drill stem samples and their implications for regolith history. Geochimica et Cosmochimica Acta71- Irving, A. Geochimica et Cosmochimica Acta42- Jacobsen, S. Nd and Sr isotopic study of the Bay of Islands ophiolite complex and the evolution of the source of midocean ridge basalts. Journal of Geophysical Research84- Sm-Nd isotopic evolution of chondrites. Earth and Planetary Science Letters50- Jahn, B. Contributions to Mineralogy and Petrology80 Jones, K.

Modeling the distribution of Nd isotopes in the oceans using an ocean general circulation model. Kinoshita, N. A shorter Nd half-life measured and implications for Sm- Nd chronology in the solar system. Lambert, D. Journal of Petrology35- LaTourette, T. Trace element partitioning between amphibole, phlogopite, and basanite melt.

Earth and Planetary Science Letters, Li, X. Geochemical and Sm-Nd isotopic study of Neoproterozoic ophiolites from southeastern China: petrogenesis and tectonic interpretations.

Precambrian Research81- Lingenfelter, R. The lunar neutron flux revisited. Earth and Planetary Science Letters16- Lodders, K. Solar system abundances and condensation temperatures of the elements. Astrophysical Journal, - Lugmair, G. Neutron capture effects in lunar gadolinium and the irradiation histories of some lunar rocks. Earth and Planetary Science Letters13 Sm-Nd-Pu timepieces in the Angra dos Reis meteorite.

Earth and Planetary Science Letters35- Search for extinct Sm, 1. The isotopic abundance of Nd in the Juvinas meteorite.

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Earth and Planetary Science Letters27 Sm-Nd age and history of Apollo 17 basalt evidence for early differentiation of the lunar interior. In Proceedings of the 6th Lunar Science Conferencepp. History and genesis of lunar troctolite or: how old is old? In Proceedings Lunar Science Conference 7thpp.

Machado, N. Geochimica et Cosmochimica Acta50- Mayer, M. Nuclear configurations in the spin-orbit coupling model. Empirical evidence. Physical Review78 McCulloch, M.

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Journal of Geophysical Research86- McDonough, W. The composition of the Earth. Meyer, B. Supernova nucleosynthesis. In Lauretta, D. Mezger, K.

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Closure temperatures of the Sm-Nd system in metamorphic garnets. Mork, M.

Contributions to Mineralogy and Petrology99- Mukasa, S. A multielement geochronologic study of the Great Dyke, Zimbabwe: significance of the robust and reset ages.

Notsu, K. Earth and Planetary Science Letters19 Geochemical Journal7 Nunes, P. Nyquist, L. The isotopic record of lunar volcanism. Geochimica et Cosmochimica Acta56- Ages and geologic histories of Martian meteorites. Space Science Reviews96- Formation age and metamorphic history of the Nuvvuagittuq greenstone belt.

Precambrian Research- Earth and Planetary Science Letters34 Geochemical and cosmochemical applications of Nd isotope analysis. Annual Review of Earth and Planetary Sciences7 Palme, H.

Cosmochemical estimates of mantle composition. In Carlson, R. Amsterdam: Elsevier. Treatise on Geochemistry, Vol. Piepgras, D.

The isotopic composition of Nd in different ocean masses. Earth and Planetary Science Letters45- Pollington, A. High resolution Sm-Nd garnet geochronology reveals the uneven pace of tectonometamorphic processes. Earth and Planetary Science Letters, High precision microsampling and preparation of zoned garnet porphyroblasts for Sm-Nd geochronology. Prevec, S.

Contributions to Mineralogy and Petrology, - Puchtel, I. Geochimica et Cosmochimica Acta73- Qin, L. Geochimica et Cosmochimica Acta75- Rankenburg, K. Neodymium isotope evidence for a chondritic composition of the Moon. Schoene, B. Geochimica et Cosmochimica Acta70- Shaw, H.

Nd-Sr-Pb systematics and age of the Kings River ophiolite, California: implications for depleted mantle evolution.

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Contributions to Mineralogy and Petrology96- Shirey, S. Mantle heterogeneity and crustal recycling in Archean granite-greenstone belts: evidence from Nd isotopes and trace elements in the Rainy Lake area, Ontario. Stewart, B. Diffusive isotopic contamination of mafic magma by coexisting silicic liquid in the Muskox intrusion.

Tanaka, T. JNdi: a neodymium isotopic reference in consistency with La Jolla neodymium. Truran, J. Origin of the elements. In Davis, A. Wood, B.

From Wikipedia, the free encyclopedia. Redirected from Samarium-neodymium dating. Bibcode : Sci Geophysical Research Letters. Bibcode : GeoRL Radiogenic Isotope Geology2nd ed. Cambridge: Cambridge University Press.

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Neodymium isotopes in the Colorado Front Range and crust - mantle evolution in the Proterozoic. Nature- Periods Eras Epochs. Canon of Kings Lists of kings Limmu.

Feb 03,   A key strength of Sm-Nd dating is that it involves two rare earth elements (REE). The behavior of the REE during geologic processes is relatively well understood because, with the exception of Eu and Ce under some conditions, they all have the same ionic charge of +3 and their ionic radius changes monotonically as a function of atomic number. Jul 23,   The Ntem Complex represents the northwestern margin of Congo Craton in southern Cameroon. It consists mainly of charnockites, TTG suites, potassic gra.

Chinese Japanese Korean Vietnamese. Lunisolar Solar Lunar Astronomical year numbering. Deep time Geological history of Earth Geological time units. Chronostratigraphy Geochronology Isotope geochemistry Law of superposition Luminescence dating Samarium-neodymium dating. Amino acid racemisation Archaeomagnetic dating Dendrochronology Ice core Incremental dating Lichenometry Paleomagnetism Radiometric dating Radiocarbon Uranium-lead Potassium-argon Tephrochronology Luminescence dating Thermoluminescence dating.

Fluorine absorption Nitrogen dating Obsidian hydration Seriation Stratigraphy.

We would like to show you a description here but the site won't allow more. The principles of Sm-Nd dating are identical to those of Rb-Sr dating, which have been discussed in detail elsewhere (e.g. Lanphere et al. ; Faure ). The underlying assumption is that at some time T x in the past, all the minerals in a rock have identical values of the ratio Nd/ Nd, but have different ratios of Sm/ Donald J. DePaolo. Sm/Nd ratios of some lavas are and imply that a small fraction of their source was removed prior to or as part of the main melting utility of the Sm-Nd system for dating altered.

Molecular clock. Categories : Radiometric dating. Namespaces Article Talk.

Views Read Edit View history. Help Community portal Recent changes Upload file. Download as Printable version. The Wikibook Historical Geology has a page on the topic of: Other isochron methods.

Concepts Deep time Geological history of Earth Geological time units. Absolute dating Amino acid racemisation Archaeomagnetic dating Dendrochronology Ice core Incremental dating Lichenometry Paleomagnetism Radiometric dating Radiocarbon Uranium-lead Potassium-argon Tephrochronology Luminescence dating Thermoluminescence dating.

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