James R. O’Neil

25.4k total citations · 9 hit papers
141 papers, 21.0k citations indexed

About

James R. O’Neil is a scholar working on Geophysics, Atmospheric Science and Geochemistry and Petrology. According to data from OpenAlex, James R. O’Neil has authored 141 papers receiving a total of 21.0k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Geophysics, 51 papers in Atmospheric Science and 48 papers in Geochemistry and Petrology. Recurrent topics in James R. O’Neil's work include Geological and Geochemical Analysis (61 papers), Geology and Paleoclimatology Research (49 papers) and Groundwater and Isotope Geochemistry (36 papers). James R. O’Neil is often cited by papers focused on Geological and Geochemical Analysis (61 papers), Geology and Paleoclimatology Research (49 papers) and Groundwater and Isotope Geochemistry (36 papers). James R. O’Neil collaborates with scholars based in United States, Canada and France. James R. O’Neil's co-authors include Irving Friedman, Sang‐Tae Kim, Robert N. Clayton, T. K. Mayeda, Hugh P. Taylor, Henry Fricke, John W. Valley, Ivan Barnes, David K. Rea and Gerald R. Dickens and has published in prestigious journals such as Nature, Science and The Journal of Chemical Physics.

In The Last Decade

James R. O’Neil

140 papers receiving 19.6k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Compilation of stable isotope fractionation factors of geochemical interest

1977 2.3k citations James R. O’Neil et al. profile →
Oxygen Isotope Fractionation in Divalent Metal Carbonates

1969 2.2k citations James R. O’Neil et al. profile →
Equilibrium and nonequilibrium oxygen isotope effects in synthetic carbonates

1997 2.1k citations James R. O’Neil et al. Geochimica et Cosmochimica Acta profile →
Oxygen isotope exchange between quartz and water

1972 1.3k citations James R. O’Neil et al. Journal of Geophysical Research Atmospheres profile →
Dissociation of oceanic methane hydrate as a cause of the carbon isotope excursion at the end of the Paleocene

1995 1.1k citations James R. O’Neil et al. profile →
Stable Isotopes in High Temperature Geological Processes

1986 1.0k citations James R. O’Neil, Hugh P. Taylor et al. profile →
Stable isotope geochemistry : a tribute to Samuel Epstein

1991 560 citations Hugh P. Taylor, James R. O’Neil et al. profile →
The oxygen isotope and cation exchange chemistry of feldspars

1967 508 citations James R. O’Neil, Hugh P. Taylor American Mineralogist profile →
Inter- and intra-tooth variation in the oxygen isotope composition of mammalian tooth enamel phosphate: implications for palaeoclimatological and palaeobiological research

1996 391 citations Henry Fricke, James R. O’Neil profile →

Peers

Countries citing papers authored by James R. O’Neil

Since Specialization

Citations

This map shows the geographic impact of James R. O’Neil's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by James R. O’Neil with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James R. O’Neil more than expected).

Fields of papers citing papers by James R. O’Neil

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James R. O’Neil. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by James R. O’Neil. The network helps show where James R. O’Neil may publish in the future.

Co-authorship network of co-authors of James R. O’Neil

This figure shows the co-authorship network connecting the top 25 collaborators of James R. O’Neil. A scholar is included among the top collaborators of James R. O’Neil based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with James R. O’Neil. James R. O’Neil is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Oxygen Isotope Fractionation between Synthetic Aragonite and Water: Influence of Solution Chemistry 2004 ·AGUFM ·(unknown), James R. O’Neil, Alfonso Mucci, Claude Hillaire‐Marcel	2
2	Evidence for rapid climate change in North America during the latest Paleocene thermal maximum: oxygen isotope compositions of biogenic phosphate from the Bighorn Basin (Wyoming) 1998 ·Earth and Planetary Science Letters ·Henry Fricke, William C. Clyde, James R. O’Neil, Philip D. Gingerich	196
3	Dehydration, partial melting, and assimilation of metabasaltic xenoliths in gabbros of the Kap Edvard Holm Complex, East Greenland 1996 ·American Journal of Science ·Mark E. Brandriss, D. K. Bird, James R. O’Neil, Robert L. Cullers	16
4	Hydrogen isotope exchange reactions between hydrous minerals and molecular hydrogen: I. A new approach for the determination of hydrogen isotope fractionation at moderate temperatures 1996 ·Geochimica et Cosmochimica Acta ·Torsten Vennemann, James R. O’Neil	79
5	Western U. S. continental climate record since 30 Ma as recorded in alunite: Comparison with the marine record 1992 ·Geological Society of America, Abstracts with Programs; (United States) ·Greg B. Arehart, James R. O’Neil	3
6	Stable isotope geochemistry : a tribute to Samuel Epstein breakdown → 1991 ·Hugh P. Taylor, James R. O’Neil, I. R. Kaplan	560
7	Crustal structure of the Mojave Desert, California: Inferences from Sr and O Isotope studies of Miocene volcanic rocks 1989 ·Journal of Geophysical Research Atmospheres ·Allen F. Glazner, James R. O’Neil	15
8	Nd, O and Sr isotopic constraints on the origin of Precambrian rocks, Southern Black Hills, South Dakota 1986 ·Geochimica et Cosmochimica Acta ·R. J. Walker, Gilbert N. Hanson, J. J. Papike, James R. O’Neil	47
9	Stable Isotopes in High Temperature Geological Processes breakdown → 1986 ·James R. O’Neil, Hugh P. Taylor, John W. Valley	1013
10	The origin of fluids in the salt beds of the Delaware Basin, New Mexico and Texas 1986 ·Applied Geochemistry ·James R. O’Neil, Clark M. Johnson, L.D. White, Edwin Roedder	18
11	Fluid flow in accretionary prisms 1985 ·Geol. Soc. Am., Abstr. Programs; (United States) ·P.J. Vrolijk, J. Casey Moore, James R. O’Neil	4
12	The effect of natural weathering on the chemical and isotopic compositions of biotites 1982 ·Geochimica et Cosmochimica Acta ·N. Clauer, James R. O’Neil, Chantal Bonnot-Courtois	42
13	Stable isotope investigation of gold-bearing jasperoid in the central Drum Mountains, Utah 1979 ·Economic Geology ·James R. O’Neil, (unknown)	6
14	Isotopic evidence for dramatic climatic changes in East Africa during the Pleistocene 1977 ·Nature ·Thure E. Cerling, Richard L. Hay, James R. O’Neil	59
15	Revised value for the O 18 fractionation between CO 2 and H 2 O at 25°C 1975 ·Journal research U. S. geological survey ·James R. O’Neil, L. Adami, Samuel Epstein	22
16	Petrogenesis of the Superstition-Superior Volcanic Area as Inferred from Strontium- and Oxygen-Isotope Studies 1973 ·Geological Society of America Bulletin ·John S. Stuckless, James R. O’Neil	41
17	The carbon and hydrogen content and isotopic composition of some Apollo 12 materials 1971 ·Lunar and Planetary Science Conference Proceedings ·I. Friedman, Jim D. Gleason, Kenneth Hardcastle, James R. O’Neil	13
18	The O 18 content of water in primary fluid inclusions from Providencia, north-central Mexico 1968 ·Economic Geology ·Robert O. Rye, James R. O’Neil	28
19	The oxygen isotope and cation exchange chemistry of feldspars breakdown → 1967 ·American Mineralogist ·James R. O’Neil, Hugh P. Taylor	508
20	A method for oxygen isotope analysis of milligram quantities of water and some of its applications 1966 ·Journal of Geophysical Research Atmospheres ·James R. O’Neil, Samuel Epstein	118

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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