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D-Index & Metrics

Earth Science

D-Index
75
Citations
24042
World Ranking
698
National Ranking
336

Frank S. Spear 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 Frank S. Spear 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: 193 publications — 58th percentile

58% of scientists in this discipline score the same or lower.

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

Frank S. Spear 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 Frank S. Spear 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: 75 D-Index — 92nd percentile

92% 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

  • 2007 - Fellow of American Geophysical Union (AGU)
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America

Overview

Frank S. Spear is affiliated with Rensselaer Polytechnic Institute in the United States and has focused their research primarily in the field of Earth and Planetary Sciences. Their scholarly work spans 33 publications, predominantly in the subfield of Geophysics, alongside contributions to Artificial Intelligence, Mechanical Engineering, Mechanics of Materials, and Inorganic Chemistry.

Their main topics of study include:

  • Geological and Geochemical Analysis
  • High-pressure geophysics and materials
  • Earthquake and tectonic studies
  • Geochemistry and Geologic Mapping
  • Hydrocarbon exploration and reservoir analysis
  • Metallurgical Processes and Thermodynamics
  • Radioactive element chemistry and processing

Frank S. Spear's contributions have appeared in scientific venues such as:

  • Contributions to Mineralogy and Petrology (5 publications)
  • Abstracts with programs - Geological Society of America (5 publications)
  • Journal of Metamorphic Geology (4 publications)
  • Geochimica et Cosmochimica Acta
  • Journal of Petrology

Their recent papers include:

  • "Iron, magnesium, and titanium isotopic fractionations between garnet, ilmenite, fayalite, biotite, and tourmaline: Results from NRIXS, ab initio, and study of mineral separates from the Moosilauke metapelite," 2021, Geochimica et Cosmochimica Acta
  • "Regional Quartz Inclusion Barometry and Comparison with Conventional Thermobarometry and Intersecting Isopleths from the Connecticut Valley Trough, Vermont and Massachusetts, USA," 2020, Journal of Petrology
  • "Revaluation of 'equilibrium' P-T paths from zoned garnet in light of quartz inclusion in garnet (QuiG) barometry," 2020, Lithos
  • "Deciphering late Devonian-early Carboniferous P-T-t path of mylonitized garnet-mica schists from Prins Karls Forland, Svalbard," 2020, Journal of Metamorphic Geology
  • "Pronounced and rapid exhumation of the Connecticut Valley Trough revealed through quartz in garnet Raman barometry and diffusion modelling of garnet dissolution-reprecipitation reactions," 2021, Journal of Metamorphic Geology

Frequent collaborators in their research include Oliver M. Wolfe, John T. Cheney, Jay B. Thomas, Eric M. Hasegawa, and Adrian E. Castro.

Frank S. Spear has been recognized with fellowships from professional societies:

  • Fellow of American Geophysical Union (AGU), 2007
  • Fellow of the Geological Society of America

Best Publications

  • Metamorphic phase equilibria and pressure-temperature-time paths

    Frank S. Spear

  • Experimental calibration of the partitioning of Fe and Mg between biotite and garnet

    J. M. Ferry;F. S. Spear

  • Geothermometry, geobarometry and the Al2SiO5 triple point at Mt. Moosilauke, New Hampshire

    K. V. Hodges;Frank S. Spear

  • A petrogenetic grid for pelitic schists in the system SiO 2 -Al 2 O 3 -FeO-MgO-K 2 O-H 2 O

    Frank S. Spear;John T. Cheney

  • P -T paths from anatectic pelites

    Frank S. Spear;Matthew J. Kohn;John T. Cheney

  • Apatite, Monazite, and Xenotime in Metamorphic Rocks

    Frank S. Spear;Joseph M. Pyle

  • Two new geobarometers for garnet amphibolites, with applications to southeastern Vermont

    Matthew J. Kohn;Frank S. Spear

  • An experimental study of hornblende stability and compositional variability in amphibolite

    Frank S. Spear

  • TitaniQ under pressure: the effect of pressure and temperature on the solubility of Ti in quartz

    Jay B. Thomas;E. Bruce Watson;Frank S. Spear;Philip T. Shemella

  • Quantitative P-T paths from zoned minerals: Theory and tectonic applications

    Frank S. Spear;Jane Selverstone

  • Monazite–Xenotime–Garnet Equilibrium in Metapelites and a New Monazite–Garnet Thermometer

    Joseph M. Pyle;Frank S. Spear;Roberta L. Rudnick;William F. McDonough

  • Retrograde net transfer reaction insurance for pressure-temperature estimates

    Matthew J. Kohn;Frank Spear

  • Pre-eruption recharge of the Bishop magma system

    D.A. Wark;W. Hildreth;F.S. Spear;D.J. Cherniak

  • On the interpretation of peak metamorphic temperatures in light of garnet diffusion during cooling

    F. S. Spear

  • Thermobarometry in granulites: pitfalls and new approaches

    Frank S. Spear;Frank P. Florence

  • Petrology and Cooling Rates of the Valhalla Complex, British Columbia, Canada

    Frank S. Spear;Randall R. Parrish

  • Four generations of accessory-phase growth in low-pressure migmatites from SW New Hampshire

    Joseph M. Pyle;Frank S. Spear

  • A model for garnet and plagioclase growth in pelitic schists: implications for thermobarometry and P‐T path determinations

    F. S. Spear;M. J. Kohn;F. P. Florence;T. Menard

  • Effects of diffusional modification of garnet growth zoning on P-T path calculations

    Frank P. Florence;Frank S. Spear

  • Yttrium zoning in garnet: Coupling of major and accessory phases during metamorphic reactions

    Joseph M. Pyle;Frank S. Spear

  • NaSi⇌CaAl exchange equilibrium between plagioclase and amphibole

    Frank S. Spear

Frequent Co-Authors

Matthew J. Kohn
Matthew J. Kohn Boise State University
Jane Selverstone
Jane Selverstone University of New Mexico
David R. M. Pattison
David R. M. Pattison University of Calgary
Douglas Rumble
Douglas Rumble Carnegie Institution for Science
E. Bruce Watson
E. Bruce Watson Rensselaer Polytechnic Institute
T. Mark Harrison
T. Mark Harrison University of California, Los Angeles
John M. Ferry
John M. Ferry Johns Hopkins University
Gerhard Franz
Gerhard Franz Technical University of Berlin
Simon M. Peacock
Simon M. Peacock University of British Columbia
Kip V. Hodges
Kip V. Hodges Arizona State University

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