Imperial College London
Alternate

SirKeithO'Nions

Faculty of Engineering, Institute for Security Science & Technology

Distinguished Research Fellow
 
 
 
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Contact

 

k.onions

 
 
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Location

 

4.16Faculty BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

43 results found

Meynadier L, Allegre C, O'Nions RK, 2008, Plate tectonics, radiogenic isotopic tracers and paleoceanography -: The case of the manganese crusts in the Pacific, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 272, Pages: 513-522, ISSN: 0012-821X

Journal article

Chang VTC, Williams RJP, Makishima A, Belshawl NS, O'Nions RKet al., 2004, Mg and Ca isotope fractionation during CaCO<sub>3</sub> biomineralisation, BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, Vol: 323, Pages: 79-85, ISSN: 0006-291X

Journal article

McKenzie D, Stracke A, Blichert-Toft J, Albarède F, Grönvold K, O'Nions RKet al., 2004, Source enrichment processes responsible for isotopic anomalies in oceanic island basalts, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 68, Pages: 2699-2724, ISSN: 0016-7037

Journal article

Zhu XK, Guo Y, Tang SH, Galy A, Ash RD, O'Nions RKet al., 2004, Metal-silicate fractionation and chondrule formation: Fe isotope constraints, 14th Annual V M Goldschmidt Conference, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: A756-A756, ISSN: 0016-7037

Conference paper

Chang VTC, Makishima A, Belshaw NS, O'Nions RKet al., 2003, Purification of Mg from low-Mg biogenic carbonates for isotope ratio determination using multiple collector ICP-MS, JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, Vol: 18, Pages: 296-301, ISSN: 0267-9477

Journal article

Zhu XK, Makishima A, Guo Y, Belshaw NS, O'Nions RKet al., 2002, High precision measurement of titanium isotope ratios by plasma source mass spectrometry, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, Vol: 220, Pages: 21-29, ISSN: 1387-3806

Journal article

O'Nions RK, Zhu XK, 2002, Natural and experimental mass fractionation of transition metal isotopes, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 66, Pages: A563-A563, ISSN: 0016-7037

Journal article

Zhu XK, Guo Y, O'Nions RK, 2002, Spatial and temporal variations of transition metal isotopes in Oceans, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 66, Pages: A880-A880, ISSN: 0016-7037

Journal article

Chang VTC, Belshaw N, Makishima A, Williams RJP, Zhu XK, O'Nions RKet al., 2002, Mg and Ca isotope fractionation during CaCo<sub>3</sub> biomineralization, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 66, Pages: A129-A129, ISSN: 0016-7037

Journal article

Guo Y, Makishima A, Zhu XK, Belshaw NS, O'Nions RK, Russell SSet al., 2002, High precision measurement of Ti isotopes in terrestrial and extraterrestrial materials, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 66, Pages: A298-A298, ISSN: 0016-7037

Journal article

Galy A, Bar-Matthews M, Halicz L, O'Nions RKet al., 2002, Mg isotopic composition of carbonate: insight from speleothem formation, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 201, Pages: 105-115, ISSN: 0012-821X

Journal article

David K, Frank M, O'Nions RK, Belshaw NS, Arden JW, Hein JRet al., 2002, The Hf isotope composition of global seawater and the evolution of Hf isotopes in the deep Pacific Ocean from Fe-Mn crusts (vol 178, pg 23, 2001), CHEMICAL GEOLOGY, Vol: 187, Pages: 175-175, ISSN: 0009-2541

Journal article

Zhu XK, Guo Y, Williams RJP, O'Nions RK, Matthews A, Belshaw NS, Canters GW, de Waal EC, Weser U, Burgess BK, Salvato Bet al., 2002, Mass fractionation processes of transition metal isotopes, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 200, Pages: 47-62, ISSN: 0012-821X

Journal article

Makishima A, Zhu XK, Belshaw NS, O'Nions RKet al., 2002, Separation of titanium from silicates for isotopic ratio determination using multiple collector ICP-MS, JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, Vol: 17, Pages: 1290-1294, ISSN: 0267-9477

Journal article

David K, Frank M, O'Nions RK, Belshaw NS, Arden JWet al., 2001, The Hf isotope composition of global seawater and the evolution of Hf isotopes in the deep Pacific Ocean from Fe-Mn crusts, CHEMICAL GEOLOGY, Vol: 178, Pages: 23-42, ISSN: 0009-2541

Journal article

Zhu XK, Guo Y, O'Nions RK, Young ED, Ash RDet al., 2001, Isotopic homogeneity of iron in the early solar nebula, NATURE, Vol: 412, Pages: 311-313, ISSN: 0028-0836

Journal article

Galy A, Belshaw NS, Halicz L, O'Nions RKet al., 2001, High-precision measurement of magnesium isotopes by multiple-collector inductively coupled plasma mass spectrometry, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, Vol: 208, Pages: 89-98, ISSN: 1387-3806

Journal article

Galy A, Young ED, Ash RD, O'Nions RKet al., 2000, The formation of chondrules at high gas pressures in the solar nebula, SCIENCE, Vol: 290, Pages: 1751-1753, ISSN: 0036-8075

Journal article

Ash RD, Galy A, Young ED, O'Nions RKet al., 2000, Correlated oxygen and magnesium isotopes in allende chondrules., METEORITICS & PLANETARY SCIENCE, Vol: 35, Pages: A21-A21, ISSN: 1086-9379

Journal article

Zhu XK, O'Nions RK, Guo YL, Reynolds BCet al., 2000, Secular variation of iron isotopes in North Atlantic Deep Water, SCIENCE, Vol: 287, Pages: 2000-2002, ISSN: 0036-8075

Journal article

O'Nions RK, Frank M, 2000, Long-term records of erosional change from marine ferromanganese crusts, PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-EARTH AND PLANETARY SCIENCES, Vol: 109, Pages: 171-180, ISSN: 0253-4126

Journal article

Belshaw NS, Zhu XK, Guo Y, O'Nions RKet al., 2000, High precision measurement of iron isotopes by plasma source mass spectrometry, INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, Vol: 197, Pages: 191-195, ISSN: 1387-3806

Journal article

Zhu XK, O'Nions RK, Guo Y, Belshaw NS, Rickard Det al., 2000, Determination of natural Cu-isotope variation by plasma-source mass spectrometry: implications for use as geochemical tracers, CHEMICAL GEOLOGY, Vol: 163, Pages: 139-149, ISSN: 0009-2541

Journal article

Reynolds BC, Frank M, O'Nions RK, 1999, Nd- and Ph-isotope time series from Atlantic ferromanganese crusts: implications for changes in provenance and paleocirculation over the last 8 Myr, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 173, Pages: 381-396, ISSN: 0012-821X

Journal article

Frank M, Reynolds BC, O'Nions RK, 1999, Nd and Pb isotopes in Atlantic and Pacific water masses before and after closure of the Panama gateway, GEOLOGY, Vol: 27, Pages: 1147-1150, ISSN: 0091-7613

Journal article

Halicz L, Galy A, Belshaw NS, O'Nions RKet al., 1999, High-precision measurement of calcium isotopes in carbonates and related materials by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS), JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, Vol: 14, Pages: 1835-1838, ISSN: 0267-9477

Journal article

Zhu XK, O'Nions RK, 1999, Monazite chemical composition: some implications for monazite geochronology, CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, Vol: 137, Pages: 351-363, ISSN: 0010-7999

Journal article

Zhu XK, O'Nions RK, 1999, Zonation of monazite in metamorphic rocks and its implications for high temperature thermochronology: a case study from the Lewisian terrain, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 171, Pages: 209-220, ISSN: 0012-821X

Journal article

Frank M, O'Nions RK, Hein JR, Banakar VKet al., 1999, 60 Myr records of major elements and Pb-Nd isotopes from hydrogenous ferromanganese crusts: Reconstruction of seawater paleochemistry, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 63, Pages: 1689-1708, ISSN: 0016-7037

Journal article

von Blanckenburg F, O'Nions RK, 1999, Response of beryllium and radiogenic isotope ratios in Northern Atlantic Deep Water to the onset of northern hemisphere glaciation, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 167, Pages: 175-182, ISSN: 0012-821X

Journal article

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