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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 30 9061 8424 40 30 111 4417

Julian S. Marsh publications per year

The chart shows the history of publications by Julian S. Marsh between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Julian S. Marsh published across 53 years, from 1973 to 2025, averaging 2.2 papers a year. Output peaked at 30 publications in 2020. 2 of the 115 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2020. 1973: 2 publications 1974: 1 publication 1975: 1 publication 1976: 1 publication 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 2 publications 1984: 0 publications 1985: 2 publications 1986: 2 publications 1987: 2 publications 1988: 1 publication 1989: 4 publications 1990: 1 publication 1991: 1 publication 1992: 1 publication 1993: 0 publications 1994: 1 publication 1995: 0 publications 1996: 1 publication 1997: 3 publications 1998: 2 publications 1999: 1 publication 2000: 0 publications 2001: 1 publication 2002: 3 publications 2003: 6 publications 2004: 2 publications 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 4 publications 2009: 6 publications 2010: 8 publications 2011: 4 publications 2012: 0 publications 2013: 2 publications 2014: 0 publications 2015: 3 publications 2016: 3 publications 2017: 1 publication 2018: 2 publications 2019: 1 publication 2020: 30 publications 2021: 3 publications 2022: 1 publication 2023: 1 publication 2024: 0 publications 2025: 2 publications
1973 2025

115 publications in total across all disciplines

View publications per year as a table
Julian S. Marsh: publications per year, 1973 to 2025
Year Publications
1973 2
1974 1
1975 1
1976 1
1977 1
1978 0
1979 0
1980 0
1981 0
1982 1
1983 2
1984 0
1985 2
1986 2
1987 2
1988 1
1989 4
1990 1
1991 1
1992 1
1993 0
1994 1
1995 0
1996 1
1997 3
1998 2
1999 1
2000 0
2001 1
2002 3
2003 6
2004 2
2005 0
2006 0
2007 1
2008 4
2009 6
2010 8
2011 4
2012 0
2013 2
2014 0
2015 3
2016 3
2017 1
2018 2
2019 1
2020 30
2021 3
2022 1
2023 1
2024 0
2025 2
Total 115
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Julian S. Marsh 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 Julian S. Marsh 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, 108–117 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: 111 publications — 17th percentile

17% 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
108–117 484 111
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
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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Julian S. Marsh 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 Julian S. Marsh 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, 30 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: 30 D-Index — 2nd percentile

2% 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 30
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
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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Overview

Julian S. Marsh is affiliated with Rhodes University in South Africa and has contributed extensively to the field of Earth and Planetary Sciences, with a focus on geophysics and geology. Their research spans various subfields including geophysics, geology, artificial intelligence, paleontology, and atmospheric science.

Their recent work includes several papers published in notable scientific venues. These include:

  • 40Ar/39Ar geochronology of the Drakensberg continental flood basalts: Understanding large argon isotopic variations in mafic groundmass and plagioclase size fractions (2022, Chemical Geology)
  • Petrogenesis of the Tuli Basin high-Ti picrites and basalts, Karoo CFB, southern Africa: Classification, stratigraphy, emplacement, and mantle source heterogeneity (2023, Lithos)
  • Co-existing low-Ti and high-Ti dolerites in two large dykes in the Gap Dyke swarm, southeastern Karoo Basin (South Africa) (2020, South African Journal of Geology)
  • Misrepresentation of early Karoo Volcanism: A critical discussion of aspects of "De Wit et al., 2020. Pillow talk: Volcanic rocks of the Karoo that formed many leagues under the Gondwanan Sea." (2020, South African Journal of Geology)
  • Unravelling the effects of crustal assimilation versus mantle source heterogeneity in Tuli basin picrites, Karoo LIP (2021, Goldschmidt2021 abstracts)

The scientist's publications concentrate largely on geological and geochemical analysis, geochemistry and geologic mapping, as well as geological and geophysical studies. Other relevant topics in their work include paleontology and stratigraphy of fossils, geological studies and exploration, high-pressure geophysics and materials, and earthquake and tectonic studies.

Frequent collaborators in their work include Geoffrey H. Howarth, Clémentine Antoine, Richard Spikings, Urs Schaltegger, and Chris Harris.

The main venues where their work is published cover a range of prominent journals and conferences such as:

  • Goldschmidt2021 abstracts
  • South African Journal of Geology
  • Chemical Geology
  • Lithos
  • The CASE Journal

The scientist's research contributes to understanding mantle source heterogeneity, volcanic rock formation, and geochronological techniques applied to geological formations originating in the Karoo Basin and Drakensberg flood basalts. Their body of work reflects interdisciplinary approaches combining geological fieldwork, geochemical analyses, and geochronological dating methods to address complex earth science questions.

Best Publications

  • The timing and duration of the Karoo igneous event, southern Gondwana

    Robert A. Duncan;P. R. Hooper;J. Rehacek;J. S. Marsh

  • The largest volcanic eruptions on Earth

    Scott E. Bryan;Scott E. Bryan;Scott E. Bryan;Ingrid Ukstins Peate;David W. Peate;Stephen Self

  • The geochemistry of potassic lavas from Vulsini, central Italy and implications for mantle enrichment processes beneath the Roman region

    N. W. Rogers;C. J. Hawkesworth;R. J. Parker;J. S. Marsh

  • Petrology and Geochemistry of Early Cretaceous Bimodal Continental Flood Volcanism of the NW Etendeka, Namibia. Part 1: Introduction, Mafic Lavas and Re-evaluation of Mantle Source Components

    A. Ewart;J S Marsh;S C Milner;A R Duncan

  • Stratigraphy and Age of Karoo Basalts of Lesotho and Implications for Correlations Within the Karoo Igneous Province

    J. S. Marsh;P. R. Hooper;John J. Rehacek;R. A. Duncan

  • The Etendeka Igneous Province: magma types and their stratigraphic distribution with implications for the evolution of the Paraná-Etendeka flood basalt province

    J.S. Marsh;A. Ewart;S.C. Milner;A.R. Duncan

  • Relationships between transform directions and alkaline igneous rock lineaments in Africa and South America

    J.S. Marsh

  • Significance of 87 Sr/ 86 Sr ratios in the Merensky cyclic unit of the Bushveld Complex

    F. J. Kruger;J. S. Marsh

  • Distinct kimberlite pipe classes with contrasting eruption processes

    E.M.W. Skinner;J.S. Marsh

  • REE fractionation and Ce anomalies in weathered Karoo dolerite

    Julian S. Marsh

  • Evolution of the continental lithosphere: evidence from volcanics and xenoliths in southern Africa

    C J Hawkesworth;Anthony J Erlank;Julian S Marsh;M A Menzies

  • The oxygen isotope composition of Karoo and Etendeka picrites: High δ18O mantle or crustal contamination?

    Chris Harris;Petrus le Roux;Ryan Cochrane;Laure Martin

  • Petrology of the Alkaline Core of the Messum Igneous Complex, Namibia: Evidence for the Progressively Decreasing Effect of Crustal Contamination

    Chris Harris;Julian S. Marsh;Simon C. Milner

  • Some Geochemical Constraints Upon Models for the Crystallization of the Upper Critical Zone-Main Zone Interval, Northwestern Bushveld Complex

    H. V. Eales;J. S. Marsh;A. A. Mitchell;W. J. de Klerk

  • Basalt geochemistry and tectonic discrimination within continental flood basalt provinces

    Julian S. Marsh

  • Petrology and Geochemistry of Early Cretaceous Bimodal Continental Flood Volcanism of the NW Etendeka, Namibia. Part 2: Characteristics and Petrogenesis of the High-Ti Latite and High-Ti and Low-Ti Voluminous Quartz Latite Eruptives

    A. Ewart;J S Marsh;S C Milner;A R Duncan

  • Magma flow inferred from AMS fabrics in a layered mafic sill, Insizwa, South Africa

    Eric C. Ferré;Cécile Bordarier;Julian S. Marsh

  • The Petrogenesis of the Kirwan Basalts of Dronning Maud Land, Antarctica

    Chris Harris;Julian S. Marsh;Andrew R. Duncan;Anthony J. Erlank

  • Asthenospheric and lithospheric sources for Mesozoic dolerites from Liberia (Africa): trace element and isotopic evidence

    C. Dupuy;J. Marsh;J. Dostal;A. Michard

  • The mineralogy, petrology, and origin of the Merensky cyclic unit in the western Bushveld Complex

    F. J. Kruger;J. S. Marsh

  • CRETACEOUS EROSION IN CENTRAL SOUTH AFRICA: EVIDENCE FROM UPPER-CRUSTAL XENOLITHS IN KIMBERLITE DIATREMES

    E.K. Hanson;J.M. Moore;E.M. Bordy;J.S. Marsh

  • Eruptive history of the Karoo lava flows and their impact on early Jurassic environmental change

    M. Moulin;F. Fluteau;V. Courtillot;J. Marsh

Frequent Co-Authors

Xavier Quidelleur
Xavier Quidelleur Centre national de la recherche scientifique, CNRS
Frédéric Fluteau
Frédéric Fluteau Institut de Physique du Globe de Paris
Eric C. Ferré
Eric C. Ferré New Mexico State University
John W. Geissman
John W. Geissman The University of Texas at Dallas
Chris Harris
Chris Harris University of Cape Town
Vincent Courtillot
Vincent Courtillot Institut de Physique du Globe de Paris
Scott E. Bryan
Scott E. Bryan Queensland University of Technology
Nick Rogers
Nick Rogers The Open University
A. J. Erlank
A. J. Erlank University of Cape Town
Dougal A. Jerram
Dougal A. Jerram University of Oslo

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