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Hans G. Machel

Hans G. Machel

Hans G. Machel 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 Hans G. Machel 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.

Hans G. Machel 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 Hans G. Machel 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.

Overview

Hans G. Machel is affiliated with the University of Alberta in Canada, focusing on earth sciences and engineering disciplines. Their work spans several interconnected fields of study, including Earth and Planetary Sciences, Engineering, Geophysics, Paleontology, Atmospheric Science, Mechanical Engineering, and Ocean Engineering.

The scientist's research addresses a variety of specific topics such as Paleontology and Stratigraphy of Fossils, Geological Formations and Processes Exploration, Geology and Paleoclimatology Research, Hydraulic Fracturing and Reservoir Analysis, Seismic Imaging and Inversion Techniques, and Drilling and Well Engineering.

Hans G. Machel has co-authored papers with several frequent collaborators. These include:

  • Georgina Lukoczki
  • János Haas
  • Jay M. Gregg
  • Sándor Kele
  • Cédric M. John

Their publications appear in journals relevant to their fields, particularly:

  • International Journal of Earth Sciences
  • Journal of Petroleum Science and Engineering

Notable recent papers include:

  • Early dolomitization and partial burial recrystallization: a case study of Middle Triassic peritidal dolomites in the Villány Hills (SW Hungary) using petrography, carbon, oxygen, strontium and clumped isotope data (2020) - International Journal of Earth Sciences
  • Conductivity of hydraulic fracturing in tight carbonate intra-platform shoal reservoirs (2020) - Journal of Petroleum Science and Engineering

These contributions reflect integration of petrographic methods and geochemical isotope analyses with reservoir engineering techniques.

Best Publications

  • Bacterial and thermochemical sulfate reduction in diagenetic settings — old and new insights

    H.G Machel

  • Products and distinguishing criteria of bacterial and thermochemical sulfate reduction

    Hans G. Machel;H. Roy Krouse;Roger Sassen

  • Concepts and models of dolomitization: a critical reappraisal

    Hans G. Machel

  • Chemistry and Environments of Dolomitization —A Reappraisal

    Hans-G. Machel;Eric W. Mountjoy

  • Mineralogy, nucleation and growth of dolomite in the laboratory and sedimentary environment: A review

    Jay M. Gregg;David L. Bish;Stephen E. Kaczmarek;Hans G. Machel

  • Causes and Emission of Luminescence in Calcite and Dolomite

    Hans G. Machel;Roger A. Mason;Anthony N. Mariano;Alfonso Mucci

  • Hydrothermal dolomite—a product of poor definition and imagination

    Hans G Machel;Jeff Lonnee

  • The influence of thermochemical sulphate reduction on hydrocarbon composition in Nisku reservoirs, Brazeau River area, Alberta, Canada

    B.K. Manzano;M.G. Fowler;H.G. Machel

  • Saddle dolomite as a by-product of chemical compaction and thermochemical sulfate reduction

    Hans-G. Machel

  • Application of Cathodoluminescence to Carbonate Diagenesis

    Unknown

  • Recrystallization versus neomorphism, and the concept of `significant recrystallization' in dolomite research

    Hans G. Machel

  • Pervasive dolomitization with subsequent hydrothermal alteration in the Clarke Lake gas field, Middle Devonian Slave Point Formation, British Columbia, Canada

    Jeff Lonnee;Hans G. Machel

  • Pervasive Subsurface Dolomitization of the Nisku Formation in Central Alberta

    Hans G. Machel;James H. Anderson

  • Low-flux, tectonically-induced squeegee fluid flow (“hot flash”) into the Rocky Mountain Foreland Basin

    Hans G. Machel;Patricia A. Cavell

  • Conceptual models for burrow‐related, selective dolomitization with textural and isotopic evidence from the Tyndall Stone, Canada

    Murray K. Gingras;S. George Pemberton;Karlis Muelenbachs;Hans Machel

  • Some aspects of diagenetic sulphate-hydrocarbon redox reactions

    H. G. Machel

  • Relationships between sulphate reduction and oxidation of organic compounds to carbonate diagenesis, hydrocarbon accumulations, salt domes, and metal sulphide deposits

    Hans G. Machel

  • Subsurface dolomites in Upper Devonian Leduc Formation buildups, central part of Rimbey-Meadowbrook reef trend, Alberta, Canada

    Joachim E. Amthor;Eric W. Mountjoy;Hans G. Machel

  • Characterization of solid bitumens originating from thermal chemical alteration and thermochemical sulfate reduction

    Simon R. Kelemen;Clifford C. Walters;Peter J. Kwiatek;Howard Freund

  • Luminescence Microscopy and Spectroscopy: Qualitative and Quantitative Applications

    Unknown

  • Devonian Matrix Dolomites and Deep Burial Carbonate Cements: A Comparison Between the Rimbey-Meadowbrook Reef Trend and the Deep Basin of West-Central Alberta

    Eric W. Mountjoy;Hans G. Machel;Darryl Green;James Duggan

  • Facies models for middle to late devonian Shallow-Marine carbonates, with comparisons to modern reefs: a guide for facies analysis

    Hans G. Machel;Ian G. Hunter

Frequent Co-Authors

Lee R. Riciputi
Lee R. Riciputi Oak Ridge National Laboratory
David R. Cole
David R. Cole The Ohio State University
David L. Bish
David L. Bish Indiana University
Fiona F Whitaker
Fiona F Whitaker University of Bristol
Cédric M. John
Cédric M. John Imperial College London
Bruce W. Fouke
Bruce W. Fouke University of Illinois at Urbana-Champaign
Kenneth E. Peters
Kenneth E. Peters Stanford University
Stefan Bachu
Stefan Bachu Alberta Innovates
H. Roy Krouse
H. Roy Krouse University of Calgary
Clifford C. Walters
Clifford C. Walters ExxonMobil (United States)

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