Subject Rankings
Africa Engineering & Technology / Earth Sciences Subject Rankings 2025
AD Scientific Index (Alper-Doger Scientific Index) offers the broadest spectrum of branches, providing analysis in 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses can be based on indicators such as the H-index, i10-index, and citation count, as well as their values from the last 6 years. As of Nov 11, 2024, rankings are according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in beta. This is due to the exclusion of (887.258) scientists categorized under 'others,' whose profiles cannot yet be determined, edited, or classified. As these fields are updated, the rankings will adjust accordingly. Please keep this in mind. See Also: [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
79
216
20,910
* 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
18,873
* Total H IndexRankings
Ranking Based On Selection
:3
isotope geochemistry
geochronology
Metrics
H-Index
i10 Index
Citation Counts
69
163
29,467
* Total H IndexRankings
Ranking Based On Selection
:4
Geometallurgy
Mining & Environment
Waste management
Mineral processing
Mine backfill
Metrics
H-Index
i10 Index
Citation Counts
66
259
16,104
* Total H IndexRankings
Ranking Based On Selection
:5
sedimentology
vertebrate palaeontology
Metrics
H-Index
i10 Index
Citation Counts
63
158
12,815
* Total H IndexRankings
Ranking Based On Selection
:6
Geology
Petrology
Geochemistry
Tectonics
Metrics
H-Index
i10 Index
Citation Counts
60
134
11,715
* Total H IndexRankings
Ranking Based On Selection
:7
hydrology
agriculture
climate change
Metrics
H-Index
i10 Index
Citation Counts
57
154
10,963
* Total H IndexRankings
Ranking Based On Selection
:8
Archaean geology
Economic Geology
Metrics
H-Index
i10 Index
Citation Counts
55
126
8,557
* Total H IndexRankings
Ranking Based On Selection
:9
Metrics
H-Index
i10 Index
Citation Counts
52
162
11,240
* Total H IndexRankings
Ranking Based On Selection
:10
Geochemistry
Metrics
H-Index
i10 Index
Citation Counts
52
85
9,074
* Total H IndexRankings
Ranking Based On Selection
:11
geology
petrology
Metrics
H-Index
i10 Index
Citation Counts
51
99
14,538
* Total H IndexRankings
Ranking Based On Selection
:12
paleontology
bone histology
paleobiology
Metrics
H-Index
i10 Index
Citation Counts
51
124
7,662
* Total H IndexRankings
Ranking Based On Selection
:13
igneous petrology
isotope geochemistry
Metrics
H-Index
i10 Index
Citation Counts
51
113
7,960
* Total H IndexRankings
Ranking Based On Selection
:14
climate
water
watershed management
Metrics
H-Index
i10 Index
Citation Counts
50
96
9,543
* Total H IndexRankings
Ranking Based On Selection
:15
Geology
Petrology
Experimental Petrology
Geochemistry
Metrics
H-Index
i10 Index
Citation Counts
50
99
8,453
* Total H IndexRankings
Ranking Based On Selection
:16
palaeontology
geology
stratigraphy
Metrics
H-Index
i10 Index
Citation Counts
50
171
10,183
* Total H IndexRankings
Ranking Based On Selection
:17
Structral Geology
Metrics
H-Index
i10 Index
Citation Counts
49
220
12,691
* Total H IndexRankings
Ranking Based On Selection
:18
Metrics
H-Index
i10 Index
Citation Counts
48
117
6,859
* Total H IndexRankings
Ranking Based On Selection
:19
Archaean geology
Metrics
H-Index
i10 Index
Citation Counts
48
126
9,017
* 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
129
7,743
* Total H IndexRankings
Ranking Based On Selection
:21
geology
stable isotopes
Metrics
H-Index
i10 Index
Citation Counts
48
155
8,520
* Total H IndexRankings
Ranking Based On Selection
:22
Emerging contaminants
circular bioeconomy
(eco)hydrology
remediation
health risk assessment
Metrics
H-Index
i10 Index
Citation Counts
42
109
6,723
* Total H IndexRankings
Ranking Based On Selection
:23
geology
water
environment
climate change
Metrics
H-Index
i10 Index
Citation Counts
42
92
7,114
* Total H IndexRankings
Ranking Based On Selection
:24
paleontology
zoology
Metrics
H-Index
i10 Index
Citation Counts
42
108
5,263
* 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
5,453
EJM (John) Carranza
Metrics
H-Index
i10-Index
Citation Counts
79
216
20,910
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
18,873
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
163
29,467
isotope geochemistry
geochronology
Mostafa Benzaazoua
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Metrics
H-Index
i10-Index
Citation Counts
66
259
16,104
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
158
12,815
sedimentology
vertebrate palaeontology
Lewis Ashwal
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
60
134
11,715
Geology
Petrology
Geochemistry
Tectonics
Re Schulze
Metrics
H-Index
i10-Index
Citation Counts
57
154
10,963
hydrology
agriculture
climate change
Carl Anhaeusser
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
55
126
8,557
Archaean geology
Economic Geology
Denis Hughes
Rhodes University
Grahamstown, South Africa
Metrics
H-Index
i10-Index
Citation Counts
52
162
11,240
Anton Le Roex
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
52
85
9,074
JD Clemens
Stellenbosch University
Stellenbosch, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
99
14,538
Anusuya Chinsamy
University of Cape Town
Cape Town, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
124
7,662
paleontology
bone histology
paleobiology
Marlina A. Elburg
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
51
113
7,960
igneous petrology
isotope geochemistry
Woldeamlak Bewket
Addis Ababa University
Addis Ababa, Ethiopia
Metrics
H-Index
i10-Index
Citation Counts
50
96
9,543
climate
water
watershed management
Gary Stevens
Stellenbosch University
Stellenbosch, South Africa
Metrics
H-Index
i10-Index
Citation Counts
50
99
8,453
Geology
Petrology
Experimental Petrology
Geochemistry
Bruce S. Rubidge
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
50
171
10,183
palaeontology
geology
stratigraphy
Mostafa R Abukhadra
Beni Suef University
Beni-Suef, Egypt
Metrics
H-Index
i10-Index
Citation Counts
48
117
6,859
Axel Hofmann
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
48
126
9,017
Dirk Frei (Né Landwehr)|Dirk Landwehr
University of the Western Cape
Bellville, South Africa
Metrics
H-Index
i10-Index
Citation Counts
48
129
7,743
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
155
8,520
Willis Gwenzi|Gwenzi W, Gwenzi Willis, W Gwenzi
University of Zimbabwe
Harare, Zimbabwe
Metrics
H-Index
i10-Index
Citation Counts
42
109
6,723
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
92
7,114
geology
water
environment
climate change
Fernando Abdala
University of the Witwatersrand
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
42
108
5,263
Wladyslaw Altermann
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
42
73
5,453
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration