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Barbara Sherwood Lollar

Barbara Sherwood Lollar

University of Toronto
Canada

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 68 1165 1031 53 47 315 14427

Barbara Sherwood Lollar publications per year

The chart shows the history of publications by Barbara Sherwood Lollar between 1993 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Barbara Sherwood Lollar published across 34 years, from 1993 to 2026, averaging 11.9 papers a year. Output peaked at 37 publications in 2019. 10 of the 404 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1993 to 2026. Vertical axis: number of publications, 0 to 37. Peak 37 publications in 2019. 1993: 2 publications 1994: 2 publications 1995: 2 publications 1996: 0 publications 1997: 4 publications 1998: 1 publication 1999: 2 publications 2000: 7 publications 2001: 6 publications 2002: 9 publications 2003: 7 publications 2004: 5 publications 2005: 18 publications 2006: 23 publications 2007: 13 publications 2008: 16 publications 2009: 11 publications 2010: 19 publications 2011: 11 publications 2012: 11 publications 2013: 17 publications 2014: 17 publications 2015: 14 publications 2016: 17 publications 2017: 13 publications 2018: 19 publications 2019: 37 publications 2020: 23 publications 2021: 22 publications 2022: 17 publications 2023: 15 publications 2024: 14 publications 2025: 9 publications 2026: 1 publication
1993 2026

404 publications in total across all disciplines

View publications per year as a table
Barbara Sherwood Lollar: publications per year, 1993 to 2026
Year Publications
1993 2
1994 2
1995 2
1996 0
1997 4
1998 1
1999 2
2000 7
2001 6
2002 9
2003 7
2004 5
2005 18
2006 23
2007 13
2008 16
2009 11
2010 19
2011 11
2012 11
2013 17
2014 17
2015 14
2016 17
2017 13
2018 19
2019 37
2020 23
2021 22
2022 17
2023 15
2024 14
2025 9
2026 1
Total 404
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Barbara Sherwood Lollar 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 Barbara Sherwood Lollar sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 308–317 publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 315 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107 315
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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Barbara Sherwood Lollar 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 Barbara Sherwood Lollar sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 68 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 68 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89 68
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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Research.com Recognitions

  • 2020 - Izaak Walton Killam Memorial Prize, Canada Council
  • 2019 - C.C. Patterson Award, Geochemical Society
  • 2019 - Fellow of the Royal Society, United Kingdom
  • 2015 - Fellow of American Geophysical Union (AGU)
  • 2004 - Fellow of the Royal Society of Canada Academy of Science

Best Publications

  • ABIOTIC METHANE ON EARTH

    Giuseppe Etiope;Giuseppe Etiope;Barbara Sherwood Lollar

  • Abiogenic formation of alkanes in the Earth's crust as a minor source for global hydrocarbon reservoirs

    B. Sherwood Lollar;T. D. Westgate;J. A. Ward;G. F. Slater

  • Solubility trapping in formation water as dominant CO2 sink in natural gas fields

    Stuart M V Gilfillan;Barbara Sherwood Lollar;Greg Holland;David Blagburn

  • Long-term sustainability of a high-energy, low-diversity crustal biome.

    Li-Hung Lin;Li-Hung Lin;Pei-Ling Wang;Douglas Rumble;Johanna Lippmann-Pipke

  • A new analysis of Mars "Special Regions": findings of the second MEPAG Special Regions Science Analysis Group (SR-SAG2)

    John D. Rummel;David W. Beaty;Melissa A. Jones;Corien Bakermans

  • Unravelling abiogenic and biogenic sources of methane in the Earth's deep subsurface

    B. Sherwood Lollar;G. Lacrampe-Couloume;G. F. Slater;J. Ward

  • Stable carbon isotope evidence for intrinsic bioremediation of tetrachloroethene and trichloroethene at area 6, Dover Air Force Base

    B Sherwood Lollar;G F Slater;B Sleep;M Witt

  • Abiogenic methanogenesis in crystalline rocks

    B. Sherwood Lollar;S.K. Frape;S.M. Weise;P. Fritz

  • The contribution of the Precambrian continental lithosphere to global H2 production.

    Barbara Sherwood Lollar;T. C. Onstott;G. Lacrampe-Couloume;C. J. Ballentine

  • The noble gas geochemistry of natural CO2 gas reservoirs from the Colorado Plateau and Rocky Mountain provinces, USA

    Stuart M V Gilfillan;Chris J. Ballentine;Greg Holland;David Blagburn

  • The yield and isotopic composition of radiolytic H2, a potential energy source for the deep subsurface biosphere

    Li-Hung Lin;Greg F. Slater;Greg F. Slater;Barbara Sherwood Lollar;Georges Lacrampe-Couloume

  • Radiolytic H2 in continental crust: Nuclear power for deep subsurface microbial communities

    Li-Hung Lin;Li-Hung Lin;James Hall;James Hall;Johanna Lippmann-Pipke;Julie A. Ward

  • Nonequilibrium clumped isotope signals in microbial methane

    David T. Wang;David T. Wang;Danielle S. Gruen;Danielle S. Gruen;Barbara Sherwood Lollar;Kai-Uwe Hinrichs

  • Variability in carbon isotopic fractionation during biodegradation of chlorinated ethenes: implications for field applications.

    Gregory F. Slater;Barbara Sherwood Lollar;Brent E. Sleep;Elizabeth A. Edwards

  • Regional groundwater focusing of nitrogen and noble gases into the Hugoton-Panhandle giant gas field, USA

    Chris J. Ballentine;Barbara Sherwood Lollar

  • Contrasting carbon isotope fractionation during biodegradation of trichloroethylene and toluene: Implications for intrinsic bioremediation

    B. Sherwood Lollar;G.F. Slater;J. Ahad;B. Sleep

  • Deep fracture fluids isolated in the crust since the Precambrian era

    Greg Holland;Greg Holland;B. Sherwood Lollar;L. Li;L. Li;Georges Lacrampe-Couloume

  • An oligotrophic deep-subsurface community dependent on syntrophy is dominated by sulfur-driven autotrophic denitrifiers

    Maggie C. Y. Lau;Thomas L. Kieft;Olukayode Kuloyo;Borja Linage-Alvarez

  • Isotopic signatures of CH4 and higher hydrocarbon gases from Precambrian Shield sites: A model for abiogenic polymerization of hydrocarbons

    B. Sherwood Lollar;G. Lacrampe-Couloume;K. Voglesonger;T.C. Onstott

  • Desulfotomaculum and Methanobacterium spp. Dominate a 4- to 5-Kilometer-Deep Fault

    Duane P. Moser;Thomas M. Gihring;Fred J. Brockman;James K. Fredrickson

Frequent Co-Authors

Chris J. Ballentine
Chris J. Ballentine University of Oxford
Martin Elsner
Martin Elsner Technical University of Munich
Thomas L. Kieft
Thomas L. Kieft New Mexico Institute of Mining and Technology
Ricardo I.F. Trindade
Ricardo I.F. Trindade Universidade de São Paulo
Grant Ferguson
Grant Ferguson University of Saskatchewan
Tullis C. Onstott
Tullis C. Onstott Princeton University
Myrna J. Simpson
Myrna J. Simpson University of Toronto

External Links

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Related Online Degrees & Career Pathways

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Veterans looking to transition into Earth Science careers may find specialized programs that cater to their unique needs. The best online Spanish degree programs for veterans offer flexible learning options and resources to support this community, which can be useful for roles involving fieldwork and collaboration with diverse populations.

Additionally, students who wish to incorporate creativity and environmental design might explore an online MFA. This degree can prepare graduates for careers blending science, art, and public engagement, such as environmental education and sustainable design.

For those interested in the organizational side of environmental sectors, pursuing the best online human resource management masters degree can lead to leadership roles within agencies or companies that focus on natural resource management and earth sciences.

Best Scientists Citing Barbara Sherwood Lollar

Pedro J. J. Alvarez

Pedro J. J. Alvarez

Rice University

Publications: 8

Joseph M. Suflita

Joseph M. Suflita

University of Oklahoma

Publications: 6

Ramon Aravena

Ramon Aravena

University of Waterloo

Publications: 5

Tillmann Lueders

Tillmann Lueders

University of Bayreuth

Publications: 4

Eugene L. Madsen

Eugene L. Madsen

Cornell University

Publications: 4

Daniel Hunkeler

Daniel Hunkeler

University of Neuchâtel

Publications: 4

Hans H. Richnow

Hans H. Richnow

Helmholtz Centre for Environmental Research

Publications: 4

Martin Thullner

Martin Thullner

Helmholtz Centre for Environmental Research

Publications: 2

Matthias Boll

Matthias Boll

University of Freiburg

Publications: 2

Philipp Blum

Philipp Blum

Karlsruhe Institute of Technology

Publications: 2

Henning Prommer

Henning Prommer

University of Western Australia

Publications: 2

Jizhong Zhou

Jizhong Zhou

University of Oklahoma

Publications: 2

Joy D. Van Nostrand

Joy D. Van Nostrand

University of Oklahoma

Publications: 1

Max M. Häggblom

Max M. Häggblom

Rutgers, The State University of New Jersey

Publications: 1

Kari E. Dunfield

Kari E. Dunfield

University of Guelph

Publications: 1

Hauke Harms

Hauke Harms

Helmholtz Centre for Environmental Research

Publications: 1

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