Africa Scientist and University Rankings 2025
Africa Engineering & Technology 1.748 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
Metrics
H-Index
i10 Index
Citation Counts
80
218
21,429
* Total H IndexRankings
Ranking Based On Selection: 2
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Metrics
H-Index
i10 Index
Citation Counts
72
187
19,089
* Total H IndexRankings
Ranking Based On Selection: 3
isotope geochemistry
geochronology
Metrics
H-Index
i10 Index
Citation Counts
69
164
29,740
* Total H IndexRankings
Ranking Based On Selection: 4
Geometallurgy
Mining & Environment
Waste management
Mineral processing
Mine backfill
Metrics
H-Index
i10 Index
Citation Counts
68
263
16,613
* Total H IndexRankings
Ranking Based On Selection: 5
sedimentology
vertebrate palaeontology
Metrics
H-Index
i10 Index
Citation Counts
63
162
13,159
* Total H IndexRankings
Ranking Based On Selection: 6
Geology
Petrology
Geochemistry
Tectonics
Metrics
H-Index
i10 Index
Citation Counts
60
134
11,812
* Total H IndexRankings
Ranking Based On Selection: 7
hydrology
agriculture
climate change
Metrics
H-Index
i10 Index
Citation Counts
58
154
11,045
* Total H IndexRankings
Ranking Based On Selection: 8
Archaean geology
Economic Geology
Metrics
H-Index
i10 Index
Citation Counts
55
126
8,615
* Total H IndexRankings
Ranking Based On Selection: 9
Metrics
H-Index
i10 Index
Citation Counts
53
163
11,346
* Total H IndexRankings
Ranking Based On Selection: 10
Geochemistry
Metrics
H-Index
i10 Index
Citation Counts
52
85
9,135
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* Total H IndexRankings
Ranking Based On Selection: 11
climate
water
watershed management
Metrics
H-Index
i10 Index
Citation Counts
51
97
9,794
* Total H IndexRankings
Ranking Based On Selection: 12
Geology
Petrology
Experimental Petrology
Geochemistry
Metrics
H-Index
i10 Index
Citation Counts
51
99
8,603
* Total H IndexRankings
Ranking Based On Selection: 13
geology
petrology
Metrics
H-Index
i10 Index
Citation Counts
51
99
14,758
* Total H IndexRankings
Ranking Based On Selection: 14
palaeontology
geology
stratigraphy
Metrics
H-Index
i10 Index
Citation Counts
51
173
10,406
* Total H IndexRankings
Ranking Based On Selection: 15
paleontology
bone histology
paleobiology
Metrics
H-Index
i10 Index
Citation Counts
51
124
7,796
* Total H IndexRankings
Ranking Based On Selection: 16
igneous petrology
isotope geochemistry
Metrics
H-Index
i10 Index
Citation Counts
51
113
8,118
* Total H IndexRankings
Ranking Based On Selection: 17
Structral Geology
Metrics
H-Index
i10 Index
Citation Counts
50
225
12,985
* Total H IndexRankings
Ranking Based On Selection: 18
Metrics
H-Index
i10 Index
Citation Counts
49
120
7,135
* Total H IndexRankings
Ranking Based On Selection: 19
Archaean geology
Metrics
H-Index
i10 Index
Citation Counts
48
126
9,218
* Total H IndexRankings
Ranking Based On Selection: 20
Geochronology
Economic Geology
Sedimentology
Laser Ablation
LA-ICP-MS
Metrics
H-Index
i10 Index
Citation Counts
48
131
7,874
* Total H IndexRankings
Ranking Based On Selection: 21
geology
stable isotopes
Metrics
H-Index
i10 Index
Citation Counts
48
157
8,638
* Total H IndexRankings
Ranking Based On Selection: 22
paleontology
zoology
Metrics
H-Index
i10 Index
Citation Counts
43
110
5,414
* Total H IndexRankings
Ranking Based On Selection: 23
Emerging contaminants
circular bioeconomy
(eco)hydrology
remediation
health risk assessment
Metrics
H-Index
i10 Index
Citation Counts
42
114
7,051
* Total H IndexRankings
Ranking Based On Selection: 24
geology
water
environment
climate change
Metrics
H-Index
i10 Index
Citation Counts
42
95
7,323
* Total H IndexRankings
Ranking Based On Selection: 25
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration
Metrics
H-Index
i10 Index
Citation Counts
42
73
5,503
EJM (John) Carranza
Metrics
H-Index
i10-Index
Citation Counts
80
218
21,429
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
Nic Beukes
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
72
187
19,089
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Jan Kramers
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
69
164
29,740
isotope geochemistry
geochronology
Mostafa Benzaazoua
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Metrics
H-Index
i10-Index
Citation Counts
68
263
16,613
Geometallurgy
Mining & Environment
Waste management
Mineral processing
Mine backfill
Roger MH Smith
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
63
162
13,159
sedimentology
vertebrate palaeontology
Lewis Ashwal
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
60
134
11,812
Geology
Petrology
Geochemistry
Tectonics
Re Schulze
Metrics
H-Index
i10-Index
Citation Counts
58
154
11,045
hydrology
agriculture
climate change
Carl Anhaeusser
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
55
126
8,615
Archaean geology
Economic Geology
Denis Hughes
Rhodes University
Grahamstown, South Africa
Metrics
H-Index
i10-Index
Citation Counts
53
163
11,346
Anton Le Roex
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
52
85
9,135
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Woldeamlak Bewket
Addis Ababa University
Addis Ababa, Ethiopia
Metrics
H-Index
i10-Index
Citation Counts
51
97
9,794
climate
water
watershed management
Gary Stevens
Stellenbosch University
Stellenbosch, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
99
8,603
Geology
Petrology
Experimental Petrology
Geochemistry
JD Clemens
Stellenbosch University
Stellenbosch, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
99
14,758
Bruce S. Rubidge
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
173
10,406
palaeontology
geology
stratigraphy
Anusuya Chinsamy
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
124
7,796
paleontology
bone histology
paleobiology
Marlina A. Elburg
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
113
8,118
igneous petrology
isotope geochemistry
Mostafa R Abukhadra
Beni Suef University
Beni Suef, Egypt
Metrics
H-Index
i10-Index
Citation Counts
49
120
7,135
Axel Hofmann
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
48
126
9,218
Dirk Frei (Né Landwehr)|Dirk Landwehr
University of the Western Cape
Bellville, South Africa
Metrics
H-Index
i10-Index
Citation Counts
48
131
7,874
Geochronology
Economic Geology
Sedimentology
Laser Ablation
LA-ICP-MS
Chris Harris
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
48
157
8,638
Fernando Abdala
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
43
110
5,414
Willis Gwenzi|Gwenzi W, Gwenzi Willis, W Gwenzi
University of Zimbabwe
Harare, Zimbabwe
Metrics
H-Index
i10-Index
Citation Counts
42
114
7,051
Emerging contaminants
circular bioeconomy
(eco)hydrology
remediation
health risk assessment
Daniel Olago
University of Nairobi
Nairobi, Kenya
Metrics
H-Index
i10-Index
Citation Counts
42
95
7,323
geology
water
environment
climate change
Wladyslaw Altermann
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
42
73
5,503
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration