R. Keith O’nions
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(Suggest an Edit or Addition)R. Keith O’nions's Published Works
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Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Partial melt distributions from inversion of rare earth element concentrations (1991) (1879)
- A Sm-Nd isotopic study of atmospheric dusts and particulates from major river systems (1984) (1568)
- Rare-earth abundances in chondritic meteorites (1978) (1350)
- Oceanic crustal thickness from seismic measurements and rare earth element inversions (1992) (1247)
- Variations in143Nd/144Nd and87Sr/86Sr ratios in oceanic basalts (1977) (652)
- Geochemical modeling of mantle differentiation and crustal growth (1979) (437)
- The Source Regions of Ocean Island Basalts (1995) (418)
- Mass fractionation processes of transition metal isotopes (2002) (397)
- Mantle reservoirs and ocean island basalts (1983) (388)
- A geochemical study of island-arc and back-arc tholeiites from the Scotia Sea (1977) (341)
- Sm-Nd studies of Archaean metasediments and metavolcanics from West Greenland and their implications for the Earth's early history (1983) (325)
- Heat and helium in the Earth (1983) (312)
- Chronology of the pressure-temperature history recorded by a granulite terrain (1988) (297)
- Helium, volatile fluxes and the development of continental crust (1988) (296)
- Early Archaean Age for the Isua Iron Formation, West Greenland (1973) (281)
- The Lead, Neodymium and Strontium Isotopic Structure of Ocean Ridge Basalts (1982) (270)
- Residence time of thorium, uranium and lead in the mantle with implications for mantle convection (1985) (267)
- A Nd isotope investigation of sediments related to crustal development in the British Isles (1983) (259)
- U–Pb, Sm–Nd and Rb–Sr systematics of mid-ocean ridge basalt glasses (1980) (252)
- Determination of natural Cu-isotope variation by plasma-source mass spectrometry: implications for use as geochemical tracers (2000) (252)
- Sm—Nd systematics of Lewisian gneisses: implications for the origin of granulites (1979) (240)
- A new variable dispersion double-focusing plasma mass spectrometer with performance illustrated for Pb isotopes (1998) (237)
- Helium, oxygen, strontium and neodymium isotopic relationships in Icelandic volcanics (1983) (236)
- Mg isotopic composition of carbonate: insight from speleothem formation (2002) (229)
- Identification of recycled continental material in the mantle from Sr, Nd and Pb isotope investigations (1982) (224)
- Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts (1997) (223)
- Isotope geochemistry of xenoliths from East Africa: Implications for development of mantle reservoirs and their interaction (1984) (218)
- Further Rubidium-Strontium Age Determinations on the Very Early Precambrian Rocks of the Godthaab District, West Greenland (1972) (210)
- Petrogenetic Significance of Isotope and Trace Element Variations in Volcanic Rocks From the Mid-Atlantic (1974) (208)
- Closure of the Central American Isthmus and its effect on deep-water formation in the North Atlantic (1997) (207)
- High-precision measurement of magnesium isotopes by multiple-collector inductively coupled plasma mass spectrometry (2001) (206)
- Determination of Rb/Sr and 87Sr86Sr ratios of some standard rocks and evaluation of X-ray fluorescence spectrometry in Rb1bSr geochemistry (1973) (205)
- Pb, Nd and Sr isotopes in oceanic ferromanganese deposits and ocean floor basalts (1978) (202)
- Nd and Sr isotopic relationships in pelagic clays and ferromanganese deposits (1981) (198)
- Zonation of monazite in metamorphic rocks and its implications for high temperature thermochronology: a case study from the Lewisian terrain (1999) (190)
- Helium isotopes in sedimentary basins (1986) (190)
- Rare gas constraints on hydrocarbon accumulation, crustal degassing and groundwater flow in the Pannonian Basin (1991) (189)
- A metamorphic history from micron-scale 207Pb/206Pb chronometry of Archean monazite (1993) (181)
- Source of Precambrian chemical and clastic sediments (1985) (173)
- SECULAR VARIATION OF ND AND PB ISOTOPES IN FERROMANGANESE CRUSTS FROM THE ATLANTIC, INDIAN AND PACIFIC OCEANS (1998) (169)
- Isotopic chronometry of zoned garnets: growth kinetics and metamorphic histories (1990) (169)
- The formation of chondrules at high gas pressures in the solar nebula. (2000) (168)
- Monazite chemical composition: some implications for monazite geochronology (1999) (161)
- Neodymium and Strontium Isotope Evidence for Crustal Contamination of Continental Volcanics (1978) (160)
- Mg and Ca isotope fractionation during CaCO3 biomineralisation. (2004) (158)
- 60 Myr records of major elements and Pb–Nd isotopes from hydrogenous ferromanganese crusts: reconstruction of seawater paleochemistry (1999) (151)
- High precision measurement of iron isotopes by plasma source mass spectrometry (2000) (151)
- Petrogenetic relationships of acid and basic rocks in iceland: Sr-isotopes and rare-earth elements in late and postglacial volcanics (1973) (146)
- Chemical and Isotopic Studies of Ultramafic Inclusions from the San Carlos Volcanic Field, Arizona: A Bearing on their Petrogenesis (1989) (145)
- Sm–Nd dating of Onverwacht Group Volcanics, southern Africa (1979) (145)
- Nd and Sr isotope geochemistry of island arc volcanics, Grenada, Lesser Antilles (1979) (142)
- Nature and Development of Basalt Magma Sources Beneath Iceland and the Reykjanes Ridge (1976) (139)
- Seawater Sr isotope variation over the past 300 kyr and influence of global climate cycles (1992) (135)
- Separation of 9Be and cosmogenic 10Be from environmental materials and SIMS isotope dilution analysis (1996) (135)
- Purification of Mg from low-Mg biogenic carbonates for isotope ratio determination using multiple collector ICP-MS (2003) (132)
- Prograde and retrograde thermal histories from the central Swiss Alps (1992) (132)
- The timescale and mechanism of granulite formation at Kurunegala, Sri Lanka (1990) (131)
- The relative diffusion of Pb, Nd, Sr and O in garnet (1995) (127)
- Helium Loss, Tectonics, and the Terrestrial Heat Budget (1987) (125)
- Isotopic homogeneity of iron in the early solar nebula (2001) (123)
- Helium and carbon isotope systematics in crustal fluids from the Eifel, the Rhine Graben and Black Forest, F.R.G. (1992) (122)
- THE FATE OF MANTLE-DERIVED CARBON IN A CONTINENTAL SEDIMENTARY BASIN : INTEGRATION OF C/HE RELATIONSHIPS AND STABLE ISOTOPE SIGNATURES (1997) (121)
- The evolution of early precambrian crustal rocks at Isua, West Greenland — Geochemical and isotopic evidence (1975) (119)
- High-precision measurement of calcium isotopes in carbonates and related materials by multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS) (1999) (116)
- Determination of rare-earth elements in USGS standard rocks by mixed- solvent ion exchange and mass-spectrometric isotope dilution (1975) (116)
- High-resolution garnet chronometry and the rates of metamorphic processes (1991) (115)
- Helium-3 anomalies and crust-mantle interaction in Italy (1985) (114)
- He, Sr and Nd isotopes in xenoliths from Hawaii and other oceanic islands (1989) (110)
- SM–ND isotopic investigations of Isua supracrustals and implications for mantle evolution (1978) (107)
- Nd- and Pb-isotope time series from Atlantic ferromanganese crusts: implications for changes in provenance and paleocirculation over the last 8 Myr (1999) (106)
- Secular variation in the Sr-isotope composition of Icelandic volcanic rocks (1973) (106)
- Age relationships between greenstone belts and “granites” in the Rhodesian Archaean craton (1975) (101)
- Behaviour and residence times of lithophile and rare gas tracers in the upper mantle (1994) (101)
- Evolution of seawater 87Sr86Sr over the last 400 ka: the absence of glacial/interglacial cycles (1994) (100)
- Isotopic evidence for the provenance of some Caledonian granites (1980) (99)
- Limits on chemical and convective isolation in the Earth's interior (1989) (99)
- Sm-Nd dating of Archaean basic and ultrabasic volcanics (1977) (98)
- Helium isotope fluxes and groundwater ages in the Dogger Aquifer, Paris Basin (1993) (97)
- Crustal residence ages of clastic sediments, orogeny and continental evolution (1986) (97)
- Strontium Isotopes and Rare Earth Elements in Basalts from the Heimaey and Surtsey Volcanic Eruptions (1973) (97)
- Early Archaean rocks and geochemical evolution of the earth's crust (1978) (96)
- Global distribution of beryllium isotopes in deep ocean water as derived from FeMn crusts (1996) (94)
- 234U/238U ratios and230Th ages for Hateruma Atoll corals: implications for coral diagenesis and seawater234U/238U ratios (1993) (94)
- DISTRIBUTION AND SOURCES OF PRE-ANTHROPOGENIC LEAD ISOTOPES IN DEEP OCEAN WATER FROM FE-MN CRUSTS (1996) (94)
- Significance of in situ SIMS chronometry of zoned monazite from the Lewisian granulites, northwest Scotland (1997) (93)
- Geochemical and Cosmochemical Applications of Nd Isotope Analysis (1979) (92)
- Rare-earth element distribution in Archaean gneisses and anorthosites, Godthåb area, West Greenland (1974) (92)
- The Hf isotope composition of global seawater and the evolution of Hf isotopes in the deep Pacific Ocean from Fe-Mn crusts (2001) (91)
- A MAGNUS OPUS : HELIUM, NEON, AND ARGON ISOTOPES IN A NORTH SEA OILFIELD (1996) (91)
- Lewisian crustal history from in situ SIMS mineral chronometry and related metamorphic textures (1997) (91)
- Magmagenesis and the mapping of chemical and isotopic variations in the mantle (1986) (89)
- The provenance and crustal residence ages of British sediments in relation to palaeogeographic reconstructions (1984) (88)
- Mantle-derived volatiles in continental crust: the Massif Central of France (1987) (87)
- Continental volcanics derived from enriched and depleted source regions: Nd- and Sr-isotope evidence (1978) (85)
- Helium and strontium isotopes in ultramafic xenoliths (1986) (83)
- Nd and Pb isotopes in Atlantic and Pacific water masses before and after closure of the Panama gateway (1999) (83)
- Precise determination of femtogram quantities of radium by thermal ionization mass spectrometry (1991) (82)
- Melting of the mantle past and present: isotope and trace element evidence (1978) (81)
- Leakage of helium from the Pannonian basin (1989) (78)
- The Petragenesis of some Archaean Volcanic Rocks from Southern Africa (1977) (76)
- Isotopic evidence for the derivation of some Roman region volcanics from anomalously enriched mantle (1976) (74)
- Limits on the mass flux between lower and upper mantle and stability of layering (1996) (74)
- Melting rates beneath Hawaii: Evidence from uranium series isotopes in recent lavas (1993) (74)
- Rates of uplift investigated through 230Th dating in the Gulf of Corinth (Greece) (1997) (70)
- The origin of hydrothermal and other gases in the Kenya Rift Valley (1995) (69)
- Development of Archaean lithosphere deduced from chronology and isotope chemistry of Scourie Dykes (1990) (68)
- Source enrichment processes responsible for isotopic anomalies in oceanic island basalts (2004) (67)
- A radiometric study of polymetamorphism in the Bamble region, Norway (1971) (66)
- Comparative trace element geochemistry of tertiary basalts from Baffin Bay (1972) (66)
- Chronology and mechanism of depletion in Lewisian granulites (1991) (65)
- Isotopic relationships of volatile and lithophile trace elements in continental ultramafic xenoliths (1992) (65)
- Melting and continent generation (1988) (64)
- Helium isotopes in Alpine regions (1992) (64)
- Carbon, helium, neon and argon isotopes in a Po Basin (Northern Italy) Natural Gas Field. (1993) (61)
- The nature of mantle neon contributions to Vienna Basin hydrocarbon reservoirs (1992) (60)
- Estimates of mantle thorium/uranium ratios from Th, U and Pb isotope abundances in basaltic melts (1993) (58)
- The role of element distribution in production and release of radiogenic helium: the Carnmenellis Granite, southwest England (1990) (58)
- An estimate of the Nd isotopic composition of Iapetus seawater from ca. 490 Ma metalliferous sediments (1981) (57)
- Sources of Pb for Indian Ocean ferromanganese crusts; a record of Himalayan erosion? (1998) (57)
- Mass balance for Nd in the Mediterranean Sea (1986) (56)
- Relationships between chemical and convective layering in the Earth (1987) (55)
- Basalt magma sources during the opening of the North Atlantic (1979) (52)
- Sr isotope and rare earth element geochemistry of DSDP Leg 37 basalts (1976) (51)
- Helium and neon isotope systematics in carbon dioxide-rich and hydrocarbon-rich gas reservoirs (1994) (51)
- A combined chemical-petrological study of separated chondrules from the Richardton meteorite (1979) (49)
- 238U234U230Th chronometry of FeMn crusts: Growth processes and recovery of thorium isotopic ratios of seawater (1995) (44)
- The Earth's missing xenon: A combination of early degassing and of rare gas loss from the atmosphere (1994) (44)
- Rare gas studies of basin scale fluid movement (1993) (43)
- Enhanced 3He4He ratios and cosmogenic helium in ultramafic xenoliths (1987) (41)
- CHEMICAL AND ISOTOPIC VARIATIONS IN MAUNA LOA THOLEIITES (1996) (41)
- A re-examination of the influence of composition on argon retentivity in metamorphic calcic amphiboles (1994) (40)
- Helium isotopes in North Sea gas fields and the Rhine rift (1985) (40)
- The use of natural He, Ne and Ar isotopes to study hydrocarbon-related fluid provenance, migration and mass balance in sedimentary basins (1994) (40)
- The timing of mineral growth across a regional metamorphic sequence (1992) (38)
- Regional distribution of 3He anomalies in the Icelandic crust (1990) (37)
- RESPONSE OF BERYLLIUM AND RADIOGENIC ISOTOPE RATIOS IN NORTHERN ATLANTIC DEEP WATER TO THE ONSET OF NORTHERN HEMISPHERE GLACIATION (1999) (37)
- Influence of chemical composition on argon retenivity in metamorphic calcic ampeiboles from South Norway (1968) (35)
- High precision uranium, thorium and radium isotope ratio measurements by high dynamic range thermal ionisation mass spectrometry☆ (1992) (34)
- Nd evidence for Proterozoic crustal development in the Belt–Purcell Supergroup (1984) (34)
- High precision measurement of titanium isotope ratios by plasma source mass spectrometry (2002) (32)
- The Chemical Evolution of the Earth's Mantle (1980) (31)
- Melt production beneath oceanic islands (1998) (31)
- POTASSIUM-ARGON AGES FROM THE BAMBLE SECTOR OF THE FENNOSCANDIAN SHIELD IN SOUTH NORWAY (1968) (30)
- High-resolution SIMS analysis of common lead (1994) (30)
- Isotope and trace element models of crustal evolution (1981) (30)
- Mantle composition derived from the chemistry of ultramafic lavas (1976) (29)
- Differentiation and evolution of the mantle (1980) (29)
- Isotopic abundances relevant to the identification of magma sources (1984) (28)
- Investigations of the LII, III X-ray emission spectra of Fe by the electron microprobe Part I: Some aspects of the Fe LII, III spectra from metallic iron and haematite (1971) (27)
- Separation of titanium from silicates for isotopic ratio determination using multiple collector ICP-MS (2002) (26)
- Archaean crustal development in the Lewisian complex of northwest Scotland (1994) (23)
- SIMS ANALYSIS OF U-PB ISOTOPES IN MONAZITE : MATRIX EFFECTS (1998) (23)
- 234U238U ratios in quaternary planktonic foraminifera (1995) (22)
- A SIMS method for 10Be/9Be ratio measurement in environmental materials (1995) (21)
- New isotopic and stratigraphical evidence on the age of the Ingletonian: probable Cambrian of northern England (1973) (21)
- Fe-Ti oxide chronometry: With application to granulite formation (1990) (20)
- SOME COMMENTS ON ISOTOPIC STRUCTURE OF TERRESTRIAL XENON (1996) (20)
- Pleistocene volcanic rocks from the Fly-Highlands province of western Papua New Guinea: a note on new Sr and Nd isotopic data and their petrogenetic implications (1983) (16)
- Plate tectonics, radiogenic isotopic tracers and paleoceanography: The case of the manganese crusts in the Pacific (2008) (15)
- Corrections to ‘Partial Melt distributions from Inversion of Rare Earth Element Concentrations’ (1992) (14)
- Investigations of bonding in some oxide minerals by oxygen Kα emission spectroscopy (1972) (14)
- A precise crystallisation age for the scourie dykes, and a new chronology for crustal development in north-west Scotland (1988) (12)
- Interpretation and measurement of oxygen Kα emission spectra (1974) (8)
- Degassing History of the Earth (1994) (8)
- Nd and Pb isotopes in ferromanganese crusts (2002) (7)
- Bonding in silicates: an assessment of bonding in orthopyroxene (1973) (7)
- Bonding in SiO 2 and Fe 2 O 3 by Oxygen K α X-ray Emission Spectra (1971) (7)
- Investigations of bonding by oxygen Kα emission spectroscopy: Further evidence concerning the true character of the oxygen Kα emission band (1972) (7)
- The use of natural He, Ne and Ar isotopes as constraints on hydrocarbon transport (1993) (6)
- Isotope systematics and chronology of granulite genesis in SRI lanka (1988) (6)
- A 4.3 Aeon Pre-Imbrium Event (1972) (6)
- The Thermodynamics of Trace Element Distribution (1977) (6)
- Isotope and ree ― Geochemistry (1985) (5)
- The Long-term Evolution of the Crust and Mantle (1984) (4)
- Rates of uplift investigated through230Th dating in the Gulf of Corinth (Greece) [Chem. Geol. 138 (1997) 171–184] (1997) (4)
- Comparison of Individual Chondrules in Parnallee (LL-3) and Richardton (H-5) (1978) (4)
- Isotopic Evolution of the Crust and Mantle (1984) (3)
- Melting, depletion and textural equilibration of lewisian granulites (1988) (3)
- Origin of Granite Batholiths: Geochemical Evidence (1980) (3)
- Rare Gas Reservoirs and Earth Degassing (1986) (3)
- Natural variation in the65Cu/63Cu ratio: High-precision measurement by plasma source mass spectrometry (1998) (3)
- Crust formation in the Lewisian (1995) (3)
- Sm–Nd systematics of Lewisian gneisses and the origin of granulites (reply) (1979) (3)
- Correlated Oxygen and Magnesium Isotopes in Allende Chondrules (2000) (3)
- Long-term records of erosional change from marine ferromanganese crusts (2000) (2)
- Investigation of dehydration and melt loss in the lower crust (1988) (2)
- Helium Isotopes in Geothermal Waters from Northwest Hungary: Chapter 20 (1988) (2)
- Helium and carbon isotope systematics in crustal fluids from the Eifel, Oberpfalz and Schwarzwald (1988) (1)
- Seismic tomography and mantle circulation : proceedings of a Royal Society discussion meeting held on 13 and 14 April 1988 (1989) (1)
- The geology and hydrogeology of the Sellafield area (11 May 1994): Chairmen's remarks and discussion (1996) (1)
- Erratum to “Limits on the mass flux between the lower and upper mantle and stability of layering” [Earth Planet. Sci. Lett. 139 (1996) 213–222] (1996) (1)
- Geochronology of phanerozoic orogenic belts: E. Jäger, M. Grunenfelder and R. Herb (editors). Birkhauser Verlag, Basel, 1970, 388 pp., SFr. 80,00. Eclog. Geol. Helv. vol. 63, 1970 (1972) (1)
- Pb isotope constaints on the extent of crustal recycling into a steady state mantle (1988) (1)
- Provenance shifts of chinese loess monitored by Pb isotopes (1998) (1)
- Iron Isotope Cosmochemistry: High-Precision Isotope Ratio Measurement Using MC-ICPMS (2001) (1)
- Chronometry of single zoned garnets: Constraints on growth kinetics and metamorphic histories (1988) (1)
- Volcanic traces (1990) (1)
- Strontium isotope and rare earth element geochemistry of basalts from DSDP Leg 37 (2008) (0)
- Crust growth and isotope age, Bellinghausen Sea (2002) (0)
- (Table 2) 87Sr/86Sr ratios of leaching experiments with basalts from DSDP Leg 37 (1976) (0)
- Reply [to “Comment on ‘Geochemical modeling of mantle differentiation and crustal growth’ by R. K. O'Nions, N. M. Evensen, and P. J. Hamilton”] (1982) (0)
- Production and loss of helium in the continental crust (1988) (0)
- Comparison of He, Sr and Pb isotopic variations in the Icelandic `hotspot' (1982) (0)
- Chemical Constraints on the Evolution of the Earth's Crust and Mantle (1979) (0)
- COSMOCHEMICAL APPLICATIONS OF Nd ISOTOPE ANALYSIS (1979) (0)
- (Table 1) 87Sr/86Sr ratios of basalts from DSDP Leg 37 (1976) (0)
- Crust growth and isotope age, Walvis Ridge (2002) (0)
- Crust growth and isotope age, Mid Atlantic Ridge (2002) (0)
- Mechanisms of continent development (1988) (0)
- Crust growth and isotope age, Australian Southern Ocean (2002) (0)
- Utility of scarcity (1984) (0)
- Isotope Geochemical Studies of North Atlantic Ocean Basalts and their Implications for Mantle Evolution (2013) (0)
- Corrigendum to “The Hf isotope composition of global seawater and the evolution of Hf isotopes in the deep Pacific Ocean from Fe–Mn crusts” [Chem. Geol. 178 (2001) 23–42] (2002) (0)
- Rare gas geochemistry and the solid earth-atmosphere relationship (1988) (0)
- Table 3) Rare earth element contents of basalts from DSDP Leg 37 (1976) (0)
- James B. Macelwane Award: Citation and Acceptance of Robert Keith O'Nions (1979) (0)
- Crust growth and isotope age, Cape Basin (2002) (0)
- High-Precision Magnesium-Isotopic Ratio Measurement by Multiple Collector Inductively Coupled Mass Spectrometry: A New Tool in Cosmochemistry and Geochemistry (1999) (0)
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