World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
48
Citations
9217
World Ranking
3786
National Ranking
424

John Parnell publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where John Parnell sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

This scientist: 377 publications — 93rd percentile

93% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 510 publications or more.

John Parnell D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where John Parnell sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

This scientist: 48 D-Index — 51st percentile

51% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 94 D-Index or more.

Overview

John Parnell is affiliated with the University of Aberdeen in the United Kingdom and has contributed extensively to the field of Earth and Planetary Sciences, with a primary focus on geophysics, geochemistry and petrology, astronomy and astrophysics, artificial intelligence, and paleontology. Their research spans a variety of subfields and main topics within geological and geochemical analysis.

Their publication record includes work in several frequent venues such as the Journal of Raman Spectroscopy, Scottish Journal of Geology, Journal of Mining and Earth Sciences, Geological Magazine, and Environmental Microbiology.

Notable recent papers by John Parnell include:

  • Towards a kerogen-to-graphite kinetic model by means of Raman spectroscopy, 2022, Earth-Science Reviews
  • The role of organic carbon in the Southern Uplands-Down-Longford Terrane accretionary prism, Scotland and Ireland, 2023, Petroleum Geoscience
  • Graphite from Palaeoproterozoic enhanced carbon burial, and its metallogenic legacy, 2021, Geological Magazine
  • Increased biomass and carbon burial 2 billion years ago triggered mountain building, 2021, Communications Earth & Environment

Frequent co-authors collaborating with John Parnell include Joseph Armstrong, Adrian J. Boyce, Andrea Schito, David Muirhead, and Connor Brolly. These collaborations have contributed to the interdisciplinary depth and breadth of their research outputs.

John Parnell's work addresses critical topics in geological and geochemical analysis, including:

  • Geological and Geochemical Analysis
  • Geochemistry and Geologic Mapping
  • Geochemistry and Elemental Analysis
  • Paleontology and Stratigraphy of Fossils
  • Hydrocarbon exploration and reservoir analysis
  • Planetary Science and Exploration
  • Radioactive element chemistry and processing

The scientist's research often integrates studies that bridge fundamental earth sciences with applied perspectives, such as the analysis of organic carbon in accretionary prisms and the kinetics of kerogen transformation into graphite. Their contributions have also explored historical geobiological processes relevant to global carbon burial and mountain building events in Earth's history.

Best Publications

  • Impact-generated hydrothermal systems on Earth and Mars

    Gordon R. Osinski;Livio L. Tornabene;Neil R. Banerjee;Charles S. Cockell

  • Groundwater activity on Mars and implications for a deep biosphere

    Joseph R. Michalski;Joseph R. Michalski;Javier Cuadros;Paul B. Niles;John Parnell

  • Weighing the deep continental biosphere.

    Sean McMahon;John Parnell

  • Searching for life on Mars: selection of molecular targets for ESA's aurora ExoMars mission

    John Parnell;David Cullen;Mark R. Sims;Stephen Alan Bowden

  • Geofluids : origin, migration and evolution of fluids in sedimentary basins

    John Parnell

  • Methane-related authigenic carbonates from the Black Sea: geochemical characterisation and relation to seeping fluids

    A. Mazzini;M.K. Ivanov;J. Parnell;A. Stadnitskaia

  • Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments

    Martin J. Siegert;Rachel J. Clarke;Matt Mowlem;Neil Ross

  • The use of integrated fluid inclusion studies in constraining oil charge history and reservoir compartmentation: examples from the Jeanne d'Arc Basin, offshore Newfoundland

    John Parnell;David Middleton;Chen Honghan;Don Hall

  • Metal enrichments in solid bitumens: A review

    J. Parnell

  • A case study of impact‐induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic

    Gordon R. Osinski;Gordon R. Osinski;Pascal Lee;John Parnell;John G. Spray

  • Organic matter and containment of uranium and fissiogenic isotopes at the Oklo natural reactors

    Bartholomew Nagy;F. Gauthier-Lafaye;P. Holliger;D. W. Davis

  • Geological overview and cratering model for the Haughton impact structure, Devon Island, Canadian High Arctic

    Gordon R. Osinski;Gordon R. Osinski;Pascal Lee;John G. Spray;John Parnell

  • Potential of palaeofluid analysis for understanding oil charge history

    J. Parnell

  • Raman spectroscopic analysis of cyanobacterial gypsum halotrophs and relevance for sulfate deposits on Mars

    Howell G. M. Edwards;Susana E. Jorge Villar;Susana E. Jorge Villar;John Parnell;Charles S. Cockell

  • Early oxygenation of the terrestrial environment during the Mesoproterozoic

    John Parnell;Adrian J. Boyce;Darren Mark;Stephen Bowden

  • Assessment of Fluid Contacts and Compartmentalization in Sandstone Reservoirs Using Fluid Inclusions: An Example from the Magnus Oil Field, North Sea

    S. A. Barclay;R. H. Worden;J. Parnell;D. L. Hall

  • Origin and timing of sand injection, petroleum migration, and diagenesis in Tertiary reservoirs, south Viking Graben, North Sea

    R. Jonk;A. Hurst;D. Duranti;J. Parnell

  • Paradigm shift in determining Neoproterozoic atmospheric oxygen

    Nigel J.F. Blamey;Nigel J.F. Blamey;Nigel J.F. Blamey;Uwe Brand;John Parnell;Natalie Spear

  • Microbial colonization in impact- generated hydrothermal sulphate deposits, Haughton impact structure, and implications for sulphates on Mars

    J. Parnell;P. Lee;Charles Cockell;G. R. Osinski

  • Dating of multistage fluid flow in sandstones.

    Darren F. Mark;John Parnell;Simon P. Kelley;Martin Lee

  • Pb-Pb dating of hydrocarbon migration into a bitumen-bearing ore deposit, North Wales

    John Parnell;Ian Swainbank

Frequent Co-Authors

Adrian J. Boyce
Adrian J. Boyce Scottish Universities Environmental Research Centre
Charles S. Cockell
Charles S. Cockell University of Edinburgh
Gordon R. Osinski
Gordon R. Osinski University of Western Ontario
Darren F. Mark
Darren F. Mark University of Glasgow
Howell G. M. Edwards
Howell G. M. Edwards University of Bradford
Martin J. Siegert
Martin J. Siegert University of Exeter
Frances Westall
Frances Westall Centre national de la recherche scientifique, CNRS
Martyn Tranter
Martyn Tranter Aarhus University
Michael J. Bentley
Michael J. Bentley Durham University
David Pearce
David Pearce Northumbria University

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Related Online Degrees & Career Pathways

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