World's Best Scientists 2026 revealed!
Sandra M. Barr

Sandra M. Barr

D-Index & Metrics

Earth Science

D-Index
45
Citations
7272
World Ranking
4477
National Ranking
205

Sandra M. Barr 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 Sandra M. Barr 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: 357 publications — 91st percentile

91% of scientists in this discipline score the same or lower.

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

Sandra M. Barr 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 Sandra M. Barr 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: 45 D-Index — 43rd percentile

43% of scientists in this discipline score the same or lower.

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

Overview

Sandra M. Barr is affiliated with Acadia University in Canada and has a substantial body of work primarily within Earth and Planetary Sciences. Their research spans multiple subfields including Geophysics, Paleontology, Artificial Intelligence, Atmospheric Science, and Earth-Surface Processes.

The topics addressed in their work cover a range of geological and geochemical studies such as:

  • Geological and Geochemical Analysis
  • Geochemistry and Geologic Mapping
  • Paleontology and Stratigraphy of Fossils
  • Geology and Paleoclimatology Research
  • Earthquake and Tectonic Studies
  • High-Pressure Geophysics and Materials
  • Geological Formations and Processes

Their recent publications include the following papers:

  • Provenance and Paleozoic tectonic evolution of Ganderia and its relationships with Avalonia and Megumia in the Appalachian-Caledonide orogen, 2021, published in Gondwana Research
  • Tonian-Ediacaran tectonomagmatic evolution of West Avalonia and its Ediacaran-early Cambrian interactions with Ganderia: an example of complex terrane transfer due to arc-arc collision?, 2020, published in Geological Society London Special Publications
  • Terrane history of the Iapetus Ocean as preserved in the northern Appalachians and western Caledonides, 2022, published in Earth-Science Reviews
  • Age and tectonic setting of Neoproterozoic granitoid rocks, Antigonish Highlands, Nova Scotia, Canada: implications for Avalonia in the northern Appalachian orogen, 2020, published in Canadian Journal of Earth Sciences
  • Unconformity-bounded rift sequences in Terreneuvian-Miaolingian strata of the Caledonian Highlands, Atlantic Canada, 2022, published in Geological Society of America Bulletin

Frequent co-authors collaborating with Sandra M. Barr include:

  • Chris E. White
  • Deanne van Rooyen
  • John W.F. Waldron
  • David I. Schofield
  • P. J. A. McCausland

Their publications appear regularly in several academic venues, such as:

  • Abstracts with programs - Geological Society of America
  • Canadian Journal of Earth Sciences
  • Atlantic Geoscience
  • Atlantic Geology
  • Geological Society London Special Publications

Best Publications

  • Provenance and tectonic evolution of Ganderia: Constraints on the evolution of the Iapetus and Rheic oceans

    Cees R. van Staal;Sandra M. Barr;J. Brendan Murphy

  • Geochemistry and geochronology of late Cenozoic basalts of Southeast Asia: Summary

    Sandra M. Barr;Alan S. Macdonald

  • Depositional and tectonic setting of the Paleoproterozoic Lower Aillik Group, Makkovik Province, Canada: evolution of a passive margin-foredeep sequence based on petrochemistry and U–Pb (TIMS and LAM-ICP-MS) geochronology

    John W.F. Ketchum;Simon E. Jackson;Nicholas G. Culshaw;Sandra M. Barr

  • Zircon and monazite UPb dating of the Doi Inthanon core complex, northern Thailand: implications for extension within the Indosinian Orogen

    G.R. Dunning;A.S. Macdonald;S.M. Barr

  • Nan River suture zone, northern Thailand

    Sandra M. Barr;Alan S. Macdonald

  • Late Paleozoic strike‐slip faults in Maritime Canada and their role in the reconfiguration of the northern Appalachian orogen

    John W. F. Waldron;Sandra M. Barr;Adrian F. Park;Chris E. White

  • Provenance of the Meguma terrane, Nova Scotia: rifted margin of early Paleozoic Gondwana

    John W.F. WaldronJ.W.F. Waldron;Chris E. WhiteC.E. White;Sandra M. BarrS.M. Barr;Antonio SimonettiA. Simonetti

  • Tectono-stratigraphic terranes in Cape Breton Island, Nova Scotia: Implications for the configuration of the northern Appalachian orogen

    Sandra M. Barr;Robert P. Raeside

  • Geochemical and Isotopic Characteristics of Granitoids of the Avalon Zone, Southern New Brunswick: Possible Evidence for Repeated Delamination Events

    Joseph B. Whalen;George A. Jenner;Kenneth L. Currie;Sandra M. Barr

  • Significance of U–Pb detrital zircon ages in quartzite from peri-Gondwanan terranes, New Brunswick and Nova Scotia, Canada

    S.M Barr;D.W Davis;S Kamo;C.E White

  • Chronology of Devonian to early Carboniferous rifting and igneous activity in southern Magdalen Basin based on U–Pb (zircon) dating

    Greg R. Dunning;Sandra M. Barr;Peter S. Giles;D. Colin McGregor

  • Nd isotopic characteristics of terranes within the Avalon Zone, southern New Brunswick

    Scott D. Samson;Sandra M. Barr;Chris E. White

  • Petrochemistry, U–Pb (zircon) age, and palaeotectonic setting of the Lampang volcanic belt, northern Thailand

    S. M. Barr;A. S. Macdonald;G. R. Dunning;P. Ounchanum

  • The Kingston terrane, southern New Brunswick, Canada: Evidence for an Early Silurian volcanic arc

    Sandra M. Barr;Chris E. White;Brent V. Miller

  • U–Pb geochronologic constraints on the volcanic evolution of the Mira (Avalon) terrane, southeastern Cape Breton Island, Nova Scotia

    Mary Lou Bevier;Sandra M. Barr;Chris E. White;Alan S. Macdonald

  • Detrital zircon ages from Neoproterozoic and Early Paleozoic conglomerate and sandstone units of New Brunswick and coastal Maine: implications for the tectonic evolution of Ganderia

    Leslie Robert Fyffe;Sandra M. Barr;Susan C. Johnson;Malcolm J. McLeod

  • Cambrian successions of the Meguma Terrane, Nova Scotia, and Harlech Dome, North Wales: dispersed fragments of a peri-Gondwanan basin?

    John W.F. Waldron;David I. Schofield;Chris E. White;Sandra M. Barr

  • Origin and evolution of Avalonia: evidence from U–Pb and Lu–Hf isotopes in zircon from the Mira terrane, Canada, and the Stavelot–Venn Massif, Belgium

    A. P. Willner;A. P. Willner;S. M. Barr;A. Gerdes;A. Gerdes;H.-J. Massonne

  • Geological correlations between Cape Breton Island and Newfoundland, northern Appalachian orogen

    S M Barr;R P Raeside;C E White

  • U-Pb Age Constraints on the Stratigraphy and Tectonic History of the Avalon Terrane, New Brunswick, Canada

    Mary Lou Bevier;Sandra M. Barr

Frequent Co-Authors

Michael A. Hamilton
Michael A. Hamilton University of Toronto
John W.F. Waldron
John W.F. Waldron University of Alberta
Søren Holdt Jensen
Søren Holdt Jensen University of Extremadura
Fred J. Longstaffe
Fred J. Longstaffe University of Western Ontario
Rebecca Anne Jamieson
Rebecca Anne Jamieson Dalhousie University
Arne P. Willner
Arne P. Willner Ruhr University Bochum
Cees R. van Staal
Cees R. van Staal Geological Survey of Canada
Greg R. Dunning
Greg R. Dunning Memorial University of Newfoundland
Scott D. Samson
Scott D. Samson Syracuse University
James K. Mortensen
James K. Mortensen University of British Columbia

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