Citation Rankings
Highly Cited Researchers
South Africa Highly Cited Researchers CitationEngineering & Technology / Earth Sciences in South Africa Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :26
Geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,928
2,430
0.493
* Total Citation Counts Rankings
Ranking Based On Selection :27
Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,910
1,104
0.225
* Total Citation Counts Rankings
Ranking Based On Selection :28
earth science
mining
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,864
2,447
0.503
* Total Citation Counts Rankings
Ranking Based On Selection :29
geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,689
1,836
0.392
* Total Citation Counts Rankings
Ranking Based On Selection :30
Geoscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,592
1,238
0.270
* Total Citation Counts Rankings
Ranking Based On Selection :31
Geometallurgy
Diamonds
Kimberlites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,437
1,655
0.373
* Total Citation Counts Rankings
Ranking Based On Selection :32
geology
analytical geochemistry
analytical isotope palaeo-science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,307
2,665
0.619
* Total Citation Counts Rankings
Ranking Based On Selection :33
Environmental Geochemistry
Marine Biogeochemistry
Southern Ocean
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,226
1,755
0.415
* Total Citation Counts Rankings
Ranking Based On Selection :34
biology
geology
geomorphology
geobiology
evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,160
1,850
0.445
* Total Citation Counts Rankings
Ranking Based On Selection :35
Indoor Mapping
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,053
1,064
0.263
* Total Citation Counts Rankings
Ranking Based On Selection :36
Geochemistry
Geology
Geochronology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,050
2,027
0.500
* Total Citation Counts Rankings
Ranking Based On Selection :37
Geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,903
1,713
0.439
* Total Citation Counts Rankings
Ranking Based On Selection :38
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,779
1,370
0.363
* Total Citation Counts Rankings
Ranking Based On Selection :39
Hydrological processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,750
1,450
0.387
* Total Citation Counts Rankings
Ranking Based On Selection :40
coal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,655
2,517
0.689
* Total Citation Counts Rankings
Ranking Based On Selection :41
metamorphic geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,483
2,144
0.616
* Total Citation Counts Rankings
Ranking Based On Selection :42
Coal geology
mineralogy
geoheritage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,467
1,150
0.332
* Total Citation Counts Rankings
Ranking Based On Selection :43
Paleontology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,445
2,253
0.654
* Total Citation Counts Rankings
Ranking Based On Selection :44
Structural Geology
Tectonics
Economic geology
Field Geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,347
1,415
0.423
* Total Citation Counts Rankings
Ranking Based On Selection :45
Groundwater resources and related issues
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,285
1,931
0.588
* Total Citation Counts Rankings
Ranking Based On Selection :46
Geobiology
Palaeobiology
Archean Earth
Astrobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,272
1,141
0.349
* Total Citation Counts Rankings
Ranking Based On Selection :47
The chronology of human evolution
U-Pb dating speleothems
palaeoclimate records beyond 500 thousand years
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,206
1,775
0.554
* Total Citation Counts Rankings
Ranking Based On Selection :48
Environmenatl Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,103
1,021
0.329
* Total Citation Counts Rankings
Ranking Based On Selection :49
Geomorphology
Environmental Science
Drylands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,095
1,452
0.469
* Total Citation Counts Rankings
Ranking Based On Selection :50
Earth sciences
geochemistry
geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,990
734
0.245
* Total Citation Counts Rankings
Rankings
207,312
887
111
Ranking Based On Selection: 26
J Kinnaird
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,928
2,430
0.493
* Total Citation Counts Rankings
Rankings
208,072
892
51
Ranking Based On Selection: 27
Dirk Van Reenen
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,910
1,104
0.225
Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
* Total Citation Counts Rankings
Rankings
209,961
900
114
Ranking Based On Selection: 28
Raymond Durrheim
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,864
2,447
0.503
* Total Citation Counts Rankings
Rankings
217,473
938
120
Ranking Based On Selection: 29
Gordon Cooper
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,689
1,836
0.392
* Total Citation Counts Rankings
Rankings
221,737
963
123
Ranking Based On Selection: 30
Roger Gibson
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,592
1,238
0.270
* Total Citation Counts Rankings
Rankings
228,908
987
64
Ranking Based On Selection: 31
Fanus Viljoen
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,437
1,655
0.373
Geometallurgy
Diamonds
Kimberlites
* Total Citation Counts Rankings
Rankings
235,263
1,011
222
Ranking Based On Selection: 32
Petrus Le Roux
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,307
2,665
0.619
geology
analytical geochemistry
analytical isotope palaeo-science
* Total Citation Counts Rankings
Rankings
239,430
1,041
128
Ranking Based On Selection: 33
Alakendra Roychoudhury
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,226
1,755
0.415
Environmental Geochemistry
Marine Biogeochemistry
Southern Ocean
* Total Citation Counts Rankings
Rankings
242,953
1,054
131
Ranking Based On Selection: 34
F Cotterill
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,160
1,850
0.445
biology
geology
geomorphology
geobiology
evolution
* Total Citation Counts Rankings
Rankings
248,886
1,084
238
Ranking Based On Selection: 35
George Sithole
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,053
1,064
0.263
* Total Citation Counts Rankings
Rankings
249,043
1,087
135
Ranking Based On Selection: 36
Robert Bolhar
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,050
2,027
0.500
Geochemistry
Geology
Geochronology
* Total Citation Counts Rankings
Rankings
257,496
1,127
137
Ranking Based On Selection: 37
Susan Webb
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,903
1,713
0.439
* Total Citation Counts Rankings
Rankings
264,902
1,166
250
Ranking Based On Selection: 38
John Compton
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,779
1,370
0.363
* Total Citation Counts Rankings
Rankings
266,681
1,179
102
Ranking Based On Selection: 39
Simon Lorentz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,750
1,450
0.387
* Total Citation Counts Rankings
Rankings
272,543
1,209
81
Ranking Based On Selection: 40
Nicola Wagner
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,655
2,517
0.689
* Total Citation Counts Rankings
Rankings
284,093
1,261
267
Ranking Based On Selection: 41
Johann Diener
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,483
2,144
0.616
* Total Citation Counts Rankings
Rankings
285,245
1,269
87
Ranking Based On Selection: 42
Bruce Cairncross
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,467
1,150
0.332
Coal geology
mineralogy
geoheritage
* Total Citation Counts Rankings
Rankings
286,755
1,278
154
Ranking Based On Selection: 43
Jonah Choiniere
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,445
2,253
0.654
* Total Citation Counts Rankings
Rankings
293,975
1,319
175
Ranking Based On Selection: 44
Alexander Kisters
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,347
1,415
0.423
Structural Geology
Tectonics
Economic geology
Field Geology
* Total Citation Counts Rankings
Rankings
298,762
1,351
42
Ranking Based On Selection: 45
Yongxin Xu
University of the Western Cape
Bellville, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,285
1,931
0.588
Groundwater resources and related issues
* Total Citation Counts Rankings
Rankings
299,730
1,361
33
Ranking Based On Selection: 46
Nicola Mcloughlin
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,272
1,141
0.349
Geobiology
Palaeobiology
Archean Earth
Astrobiology
* Total Citation Counts Rankings
Rankings
304,891
1,389
291
Ranking Based On Selection: 47
Robyn Pickering
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,206
1,775
0.554
The chronology of human evolution
U-Pb dating speleothems
palaeoclimate records beyond 500 thousand years
* Total Citation Counts Rankings
Rankings
313,284
1,425
166
Ranking Based On Selection: 48
Terence Mccarthy
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,103
1,021
0.329
* Total Citation Counts Rankings
Rankings
313,936
1,427
295
Ranking Based On Selection: 49
Frank D Eckardt
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,095
1,452
0.469
Geomorphology
Environmental Science
Drylands
* Total Citation Counts Rankings
Rankings
323,042
1,489
305
Ranking Based On Selection: 50
David L. Reid
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,990
734
0.245
Earth sciences
geochemistry
geology