World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
82
Citations
27985
World Ranking
454
National Ranking
241

Alan J. Kaufman 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 Alan J. Kaufman 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: 212 publications — 65th percentile

65% of scientists in this discipline score the same or lower.

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

Alan J. Kaufman 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 Alan J. Kaufman 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: 82 D-Index — 95th percentile

95% 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

  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America

Overview

Alan J. Kaufman is affiliated with the University of Maryland, College Park in the United States. Their main field of research is Earth and Planetary Sciences, with significant contributions across several specialized subfields, including Atmospheric Science, Paleontology, Environmental Chemistry, Geochemistry and Petrology, and Mechanics of Materials.

Their research spans a variety of interconnected topics, reflecting a broad interest in geology, paleoclimatology, and atmospheric processes. Key topics in their work include Paleontology and Stratigraphy of Fossils, Geology and Paleoclimatology Research, Methane Hydrates and Related Phenomena, Geochemistry and Elemental Analysis, Hydrocarbon Exploration and Reservoir Analysis, Geological and Geochemical Analysis, and Atmospheric and Environmental Gas Dynamics.

Alan J. Kaufman has been involved in numerous publications, including papers in high-impact venues. Some of their recent research publications include:

  • "Deposition or diagenesis? Probing the Ediacaran Shuram excursion in South China by SIMS" (2021) in Global and Planetary Change
  • "A diverse Ediacara assemblage survived under low-oxygen conditions" (2022) in Nature Communications
  • "Tracing sources of atmospheric methane using clumped isotopes" (2023) in Proceedings of the National Academy of Sciences
  • "Primary or secondary? A dichotomy of the strontium isotope anomalies in the Ediacaran carbonates of Saudi Arabia" (2020) in Precambrian Research
  • "Basin-scale reconstruction of euxinia and Late Devonian mass extinctions" (2023) in Nature

Their frequent coauthors highlight collaborations with several researchers, including Geoffrey J. Gilleaudeau, Shuhai Xiao, Dmitriy Grazhdankin, Huan Cui, and Andrew Doerrler. The breadth of these partnerships reflects interdisciplinary connections within the Earth sciences.

The scientist has published extensively in various venues. The most frequent publication outlets include Abstracts with Programs - Geological Society of America, Proceedings of the National Academy of Sciences, Precambrian Research, Goldschmidt2021 Abstracts, and Nature.

Alan J. Kaufman has received recognition such as being named a Fellow of the Geological Society of America, which underlines their professional status within the geoscience community.

Best Publications

  • A Neoproterozoic Snowball Earth

    Paul F. Hoffman;Alan J. Kaufman;Galen P. Halverson;Daniel P. Schrag

  • Neoproterozoic variations in the C-isotopic composition of seawater: stratigraphic and biogeochemical implications.

    Alan J. Kaufman;Andrew H. Knoll

  • A Whiff of Oxygen Before the Great Oxidation Event

    Ariel D. Anbar;Yun Duan;Timothy W. Lyons;Gail L. Arnold

  • THE ABUNDANCE OF 13C IN MARINE ORGANIC MATTER AND ISOTOPIC FRACTIONATION IN THE GLOBAL BIOGEOCHEMICAL CYCLE OF CARBON DURING THE PAST 800 MA

    John M. Hayes;Harald Strauss;Alan J. Kaufman

  • The Sr, C and O isotopic evolution of Neoproterozoic seawater

    Stein B. Jacobsen;Alan J. Kaufman

  • Biostratigraphic and Geochronologic Constraints on Early Animal Evolution

    John P. Grotzinger;Samuel A. Bowring;Beverly Z. Saylor;Alan J. Kaufman

  • Sedimentary cycling and environmental change in the Late Proterozoic: Evidence from stable and radiogenic isotopes

    Louis A Derry;Alan J Kaufman;Stein B Jacobsen

  • Secular variation in carbon isotope ratios from Upper Proterozoic successions of Svalbard and East Greenland.

    A. H. Knoll;J. M. Hayes;A. J. Kaufman;K. Swett

  • The Vendian record of Sr and C isotopic variations in seawater: Implications for tectonics and paleoclimate

    Alan J. Kaufman;Stein B. Jacobsen;Andrew H. Knoll

  • Pulsed oxidation and biological evolution in the Ediacaran Doushantuo Formation

    Kathleen A. McFadden;Jing Huang;Xuelei Chu;Ganqing Jiang

  • Isotopes, Ice Ages, and Terminal Proterozoic Earth History

    Alan J. Kaufman;Andrew H. Knoll;Guy M. Narbonne

  • Experimental measurement of boron isotope fractionation in seawater

    Kateryna Klochko;Alan J. Kaufman;Wengsheng Yao;Robert H. Byrne

  • Carbon Isotope Variability across the Ediacaran Yangtze Platform in South China: Implications for a Large Surface-to-Deep Ocean δ13C Gradient

    Ganqing Jiang;Alan J. Kaufman;Nicholas Christie-Blick;Shihong Zhang

  • Late Archean Biospheric Oxygenation and Atmospheric Evolution

    Alan J. Kaufman;David T. Johnston;James Farquhar;Andrew L. Masterson

  • Isotopic compositions of carbonates and organic carbon from upper Proterozoic successions in Namibia: stratigraphic variation and the effects of diagenesis and metamorphism.

    Alan J Kaufman;J.M Hayes;Andrew H Knoll;Gerard J.B Germs

  • The sulfur isotopic composition of Neoproterozoic seawater sulfate: implications for a snowball Earth?

    Matthew T. Hurtgen;Michael A. Arthur;Neil S. Suits;Alan J. Kaufman

  • Isotopic evidence for Mesoarchaean anoxia and changing atmospheric sulphur chemistry

    James Farquhar;Marc Peters;David T. Johnston;Harald Strauss

  • Reconstructing Earth's surface oxidation across the Archean-Proterozoic transition

    Qingjun Guo;Qingjun Guo;Harald Strauss;Alan J. Kaufman;Alan J. Kaufman;Stefan Schröder

  • Integrated Chemostratigraphy and Biostratigraphy of the Windermere Supergroup, Northwestern Canada: Implications for Neoproterozoic Correlations and the Early Evolution of Animals

    Guy M. Narbonne;Alan J. Kaufman;Andrew H. Knoll

  • Pervasive oxygenation along late Archaean ocean margins

    Brian Kendall;Christopher T. Reinhard;Timothy W. Lyons;Alan J. Kaufman

  • A composite reference section for terminal proterozoic strata of southern Namibia.

    Beverly Z. Saylor;Alan J. Kaufman;John P. Grotzinger;Frank Urban

Frequent Co-Authors

Shuhai Xiao
Shuhai Xiao Virginia Tech
Andrew H. Knoll
Andrew H. Knoll Harvard University
James Farquhar
James Farquhar University of Maryland, College Park
Frank A. Corsetti
Frank A. Corsetti University of Southern California
Ariel D. Anbar
Ariel D. Anbar Arizona State University
Huiming Bao
Huiming Bao Louisiana State University
Chuanming Zhou
Chuanming Zhou Chinese Academy of Sciences
Karem Azmy
Karem Azmy Memorial University of Newfoundland
Ganqing Jiang
Ganqing Jiang University of Nevada, Las Vegas
Yongbo Peng
Yongbo Peng Tongji University

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