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Earth Science
South Africa
2025

Lewis D. Ashwal 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 Lewis D. Ashwal 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+

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

Lewis D. Ashwal 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 Lewis D. Ashwal 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+

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

Research.com Recognitions

  • 2025 - Research.com Earth Science in South Africa Leader Award
  • 2022 - Research.com Earth Science in South Africa Leader Award

Overview

Lewis D. Ashwal is affiliated with the University of the Witwatersrand in South Africa. Their primary field of study is Earth and Planetary Sciences, with particular emphasis on geophysics, artificial intelligence, astronomy and astrophysics, mechanics of materials, and geochemistry and petrology. The research topics covered in their work include geological and geochemical analysis, geochemistry and geologic mapping, earthquake and tectonic studies, planetary science and exploration, hydrocarbon exploration and reservoir analysis, high-pressure geophysics and materials, and geology and paleoclimatology research.

Ashwal's research output includes several recent publications across a range of scientific journals. Notable papers are:

  • "Machine learning-based prediction of trace element concentrations using data from the Karoo large igneous province and its application in prospectivity mapping," 2021, published in Artificial Intelligence in Geosciences
  • "Sub-lithospheric mantle sources for overlapping southern African Large Igneous Provinces," 2021, published in South African Journal of Geology
  • "Sr-Enriched Glassy Picrites From the Karoo Large Igneous Province are Evolved, not Primitive Magmatic Rocks," 2021, published in Geochemistry Geophysics Geosystems
  • "Melt infiltration in a crystal mush and pegmatoid formation in the platiniferous Merensky Reef, Bushveld Complex, South Africa," 2024, published in Mineralium Deposita
  • "Subsurface Microbial Colonization at Mineral-Filled Veins in 2-Billion-Year-Old Mafic Rock from the Bushveld Igneous Complex, South Africa," 2024, published in Microbial Ecology

The venues where Ashwal has frequently published include Artificial Intelligence in Geosciences, South African Journal of Geology, Mineralium Deposita, Microbial Ecology, and Geochemistry Geophysics Geosystems.

Collaboration is a recurring feature of Ashwal's research. Frequent co-authors include Ben Hayes, S. J. Webb, Yohey Suzuki, Mariko Kouduka, and Hanae Kobayashi, with multiple joint publications. These collaborations span geosciences and related fields, reflecting interdisciplinary research approaches.

Best Publications

  • Diamonds sampled by plumes from the core–mantle boundary

    Trond H. Torsvik;Trond H. Torsvik;Kevin Burke;Kevin Burke;Bernhard Steinberger;Bernhard Steinberger;Susan J. Webb

  • Deep mantle structure as a reference frame for movements in and on the Earth

    Trond H. Torsvik;Rob van der Voo;Pavel V. Doubrovine;Kevin Burke;Kevin Burke

  • Age and tectonic evolution of Neoproterozoic ductile shear zones in southwestern Madagascar, with implications for Gondwana studies

    Maarten J. de Wit;Sam A. Bowring;Lew D. Ashwal;Leon G. Randrianasolo

  • Petrogenesis of Neoproterozoic Granitoids and Related Rocks from the Seychelles: the Case for an Andean-type Arc Origin

    L.D. Ashwal;Daniel Demaiffe;Trond Torsvik

  • U-Pb Geochronology and Isotope Geochemistry of the Archean and Proterozoic Rocks of North-Central Madagascar

    R. D. Tucker;L. D. Ashwal;M. J. Handke;M. A. Hamilton

  • Slow cooling of deep crustal granulites and Pb-loss in zircon

    Lewis D. Ashwal;Robert D. Tucker;Ernst K. Zinner;Ernst K. Zinner

  • Neoproterozoic continental arc magmatism in west-central Madagascar

    Michael J. Handke;Robert D. Tucker;Lewis D. Ashwal

  • A Precambrian microcontinent in the Indian Ocean

    Trond H. Torsvik;Hans Amundsen;Ebbe H. Hartz;Fernando Corfu

  • New way to map old sutures using deformed alkaline rocks and carbonatites

    Kevin Burke;Lewis D. Ashwal;Susan J. Webb

  • SNC meteorites: Igneous rocks from Mars?

    C. A. Wood;L. D. Ashwal

  • Late Cretaceous India–Madagascar fit and timing of break‐up related magmatism

    T.H. Torsvik;R.D. Tucker;L.D. Ashwal;L.M. Carter

  • U–Pb geochronology of Seychelles granitoids: a Neoproterozoic continental arc fragment

    R.D. Tucker;L.D. Ashwal;T.H. Torsvik

  • Late Cretaceous magmatism in Madagascar: palaeomagnetic evidence for a stationary Marion hotspot

    T.H Torsvik;R.D Tucker;L.D Ashwal;E.A Eide

  • Magmatic stratigraphy in the Bushveld Northern Lobe: continuous geophysical and mineralogical data from the 2950 m Bellevue drillcore

    Lewis D. Ashwal;Susan J. Webb;Michael W. Knoper

  • Two-stage models for lunar and terrestrial anorthosites Petrogenesis without a magma ocean

    John Longhi;Lewis D. Ashwal

  • Heat production in an Archean crustal profile and implications for heat flow and mobilization of heat-producing elements

    L.D. Ashwal;P. Morgan;S.A. Kelley;J.A. Percival

  • Proterozoic mountain building in Peninsular India: an analysis based primarily on alkaline rock distribution

    C. Leelanandam;K. Burke;K. Burke;K. Burke;L. D. Ashwal;S. J. Webb

  • THE TEMPORALITY OF ANORTHOSITES

    Lewis D. Ashwal

  • Age, petrogenesis and significance of 1 Ga granitoids and related rocks from the Sendra area, Aravalli Craton, NW India

    M.K. Pandit;L.M. Carter;L.D. Ashwal;R.D. Tucker

  • Continental crust beneath southeast Iceland.

    Trond H. Torsvik;Trond H. Torsvik;Hans E. F. Amundsen;Reidar G. Trønnes;Pavel V. Doubrovine

  • Geology of Rajasthan (Northwest India) Precambrian to Recent. A.B. Roy, S.R. Jakhar (Eds.); Scientific Publishers (India), Jodhpur, 421 pages, Hardbound

    Lewis D Ashwal

Frequent Co-Authors

Trond H. Torsvik
Trond H. Torsvik University of Oslo
Fernando Corfu
Fernando Corfu University of Oslo
Kevin Burke
Kevin Burke University of Houston
Bernhard Steinberger
Bernhard Steinberger Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
Torgeir B. Andersen
Torgeir B. Andersen University of Oslo
Robert D. Tucker
Robert D. Tucker Washington University in St. Louis
Carmen Gaina
Carmen Gaina University of Oslo
Stephanie C. Werner
Stephanie C. Werner University of Oslo
Bjørn Jamtveit
Bjørn Jamtveit University of Oslo
Manoj K. Pandit
Manoj K. Pandit University of Rajasthan

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