World's Best Scientists 2026 revealed!
Patrick J. O'Brien

Patrick J. O'Brien

D-Index & Metrics

Earth Science

D-Index
48
Citations
8210
World Ranking
3824
National Ranking
263

Patrick J. O'Brien 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 Patrick J. O'Brien 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: 97 publications — 9th percentile

9% of scientists in this discipline score the same or lower.

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

Patrick J. O'Brien 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 Patrick J. O'Brien 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.

Research.com Recognitions

  • 2002 - Member of Academia Europaea

Overview

Patrick J. O'Brien is affiliated with the University of Potsdam in Germany. Their research spans primarily Earth and Planetary Sciences and Medicine, with notable work across subfields such as Geophysics, Public Health, Environmental and Occupational Health, Atmospheric Science, Geochemistry and Petrology, and Immunology and Allergy.

The scientist's research topics include:

  • Geological and Geochemical Analysis
  • Earthquake and tectonic studies
  • Ocular Surface and Contact Lens
  • High-pressure geophysics and materials
  • Geology and Paleoclimatology Research
  • Mineralogy and Gemology Studies
  • Allergic Rhinitis and Sensitization

Frequent publication venues for Patrick J. O'Brien include:

  • Value in Health
  • American Mineralogist
  • Abstracts with programs - Geological Society of America
  • Science Advances
  • Earth and Planetary Science Letters

The recent published papers associated with Patrick J. O'Brien are:

  • "The role of continental subduction in mantle metasomatism and carbon recycling revealed by melt inclusions in UHP eclogites", 2023, Science Advances
  • "Embryos of TTGs in Gore Mountain garnet megacrysts from water-fluxed melting of the lower crust", 2021, Earth and Planetary Science Letters
  • "High-pressure, halogen-bearing melt preserved in ultrahigh-temperature felsic granulites of the Central Maine Terrane, Connecticut (U.S.A.)", 2020, American Mineralogist
  • "Metamorphic and geochronological evolution of Paleoproterozoic high-pressure ultra-high-temperature pelitic granulite, Chicheng, northern Trans-North China Orogen", 2021, Precambrian Research
  • "POSC371 Qualitative Research Exploring the Patient Experience of Symptoms and Health-Related Quality of Life Impacts in Chronic Ocular Surface Pain", 2022, Value in Health

Frequent co-authors of Patrick J. O'Brien include:

  • Alessia Borghini
  • Silvio Ferrero
  • Oscar Laurent
  • Bernd Wunder
  • Brigitte Sloesen

Patrick J. O'Brien is recognized for contributions to both geology and health sciences, reflecting a multidisciplinary approach. Their body of work encompasses aspects of mantle processes, geological metamorphism, and patient-centered health research.

In 2002, Patrick J. O'Brien was awarded membership in the Academia Europaea.

Best Publications

  • High‐pressure granulites: formation, recovery of peak conditions and implications for tectonics

    P. J. O'Brien;J. Rötzler

  • High-pressure granulites in the Sanggan area, North China craton: metamorphic evolution, P-T paths and geotectonic significance

    J. H. Guo;P. J. O'Brien;M. Zhai

  • Linking growth episodes of zircon and metamorphic textures to zircon chemistry: an example from the ultrahigh-temperature granulites of Rogaland (SW Norway)

    Andreas Möller;Andreas Möller;Patrick J. O’Brien;Allen Kennedy;Alfred Kröner

  • Zircon geochronology and metamorphic evolution of mafic dykes in the Hengshan Complex of northern China: Evidence for late Palaeoproterozoic extension and subsequent high-pressure metamorphism in the North China Craton

    Alfred Kröner;Simon A. Wilde;Guochun Zhao;Patrick J. O'Brien

  • Thermobarometry of phengite‐bearing eclogites in the Dabie Mountains of central China

    D. A. Carswell;P. J. O'brien;R. N. Wilson;M. Zhai

  • Coesite in Himalayan eclogite and implications for models of India-Asia collision

    P.J. O'Brien;N. Zotov;R. Law;M.A. Khan

  • Thermobarometry and Geotectonic Significance of High-Pressure Granulites: Examples from the Moldanubian Zone of the Bohemian Massif in Lower Austria

    D. A. Carswell;P. J. O'brien

  • Zircon ages for high pressure granulites from South Bohemia, Czech Republic, and their connection to Carboniferous high temperature processes

    A. Kröner;P. J. O'Brien;A. A. Nemchin;R. T. Pidgeon

  • Polyphase zircon in ultrahigh‐temperature granulites (Rogaland, SW Norway): constraints for Pb diffusion in zircon

    A. Moller;P. O'Brien;Allen Kennedy;A. Kroner

  • Garnet zoning and reaction textures in overprinted eclogites, Bohemian Massif, European variscides: a record of their thermal history during exhumation

    Patrick J. O'Brien

  • Garnet growth at high- and ultra-high pressure conditions and the effect of element fractionation on mineral modes and composition

    Matthias Konrad-Schmolke;Patrick J. O'Brien;Christian de Capitani;Dennis A. Carswell

  • The fundamental Variscan problem: high-temperature metamorphism at different depths and high-pressure metamorphism at different temperatures

    Patrick J. O’Brien

  • The petrology of two distinct granulite types in the Hengshan Mts, China, and tectonic implications

    Patrick J. O'Brien;Nicolas Walte;Jianghai Li

  • Diamond and coesite discovered in Saxony-type granulite: Solution to the Variscan garnet peridotite enigma

    Jana Kotková;Jana Kotková;Patrick J. O'Brien;Martin A. Ziemann

  • The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway

    D. A. Carswell;H. K. Brueckner;H. K. Brueckner;S. J. Cuthbert;K. Mehta

  • Eclogites with a short-lived granulite facies overprint in the Moldanubian Zone, Czech Republic: petrology, geochemistry and diffusion modelling of garnet zoning

    Patrick J. O'Brien;Stranislav Vrána

  • What drives metamorphism and metamorphic reactions

    P. J. Treloar;Patrick J. O'Brien

  • Combined thermodynamic and rare earth element modelling of garnet growth during subduction; examples from ultrahigh-pressure eclogite of the Western Gneiss region, Norway

    Matthias Konrad-Schmolke;Thomas Zack;Patrick J. O'Brien;Dorrit E. Jacob

  • Petrological and Isotopic Studies on Palaeozoic High-pressure Granulites, Gory Sowie Mts, Polish Sudetes

    Patrick J. O'Brien;Alfred Kröner;Petra Jaeckel;Ernst Hegner

  • Tectonometamorphic evolution of the Bohemian Massif: evidence from high pressure metamorphic rocks

    P. J. O'Brien;D. A. Carswell

Frequent Co-Authors

Bernd Wunder
Bernd Wunder Ruhr University Bochum
Alfred Kröner
Alfred Kröner Johannes Gutenberg University of Mainz
Thomas Zack
Thomas Zack University of Gothenburg
Peter J. Treloar
Peter J. Treloar Kingston University
Markus Wälle
Markus Wälle ETH Zurich
Allen K. Kennedy
Allen K. Kennedy Curtin University
Sun-Lin Chung
Sun-Lin Chung National Taiwan University
Mingguo Zhai
Mingguo Zhai Chinese Academy of Sciences
Ross J. Angel
Ross J. Angel University of Padua

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students exploring Earth Science in the USA, diverse online degree options can complement or enhance their studies. Many learners pursue interdisciplinary skills, such as digital photography, which is valuable for documenting fieldwork and environmental changes. If photography interests you, exploring photography colleges online can reveal affordable programs designed to fit various schedules and budgets.

Veterans often seek flexible, supportive programs tailored to their unique educational needs. For those considering expanding their language abilities alongside Earth Science, programs like the online Spanish bachelor degree for veterans provide a pathway to enhance career prospects in diverse environments. Similarly, veteran students interested in creative disciplines might find the best online photography degree programs for veterans a great fit, offering specialized support and veteran-friendly resources.

Additionally, shorter, affordable language degrees can offer quick, marketable skills. For example, the short Spanish degrees are designed for students aiming to enter the workforce rapidly, which may complement careers in environmental agencies or global consultancy roles.

By exploring these related online degrees, Earth Science students can build versatile skillsets to boost their career pathways in an evolving job market.

Best Scientists Citing Patrick J. O'Brien

Trending Scientists

Recently Published Articles