Total 2,448,390 scientists, country 221, and institutions 24,477 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1

Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
187
135
0.722
* Total i10 IndexRankings
Ranking Based On Selection: 2

isotope geochemistry
geochronology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
101
0.616
* Total i10 IndexRankings
Ranking Based On Selection: 3

Archaean geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
126
102
0.810
* Total i10 IndexRankings
Ranking Based On Selection: 4

igneous petrology
isotope geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
95
0.841
* Total i10 IndexRankings
Ranking Based On Selection: 5

Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
93
33
0.355
* Total i10 IndexRankings
Ranking Based On Selection: 6

Geometallurgy
Diamonds
Kimberlites
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
42
0.553
* Total i10 IndexRankings
Ranking Based On Selection: 7

Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
38
0.521
* Total i10 IndexRankings
Ranking Based On Selection: 8

Petrology
Geochemistry
Geochronology
Geodynamics
Economic Geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
60
0.952
* Total i10 IndexRankings
Ranking Based On Selection: 9

coal
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
43
0.796
* Total i10 IndexRankings
Ranking Based On Selection: 10

Crustal evolution
geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
22
0.431
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11

Coal geology
mineralogy
geoheritage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
25
0.510
* Total i10 IndexRankings
Ranking Based On Selection: 12

Paleomagnetism
stratigraphy
global change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
26
0.722
* Total i10 IndexRankings
Ranking Based On Selection: 13

Data centric geotechnics
Geo Hazards
ground monitoring
infrastructure resilience
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
28
0.848
* Total i10 IndexRankings
Ranking Based On Selection: 14

Geology
Geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
22
0.688
* Total i10 IndexRankings
Ranking Based On Selection: 15

MedicalGeology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
20
0.625
* Total i10 IndexRankings
Ranking Based On Selection: 16

tectonics structural geology orogen exploration
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
* Total i10 IndexRankings
Ranking Based On Selection: 17

Geology
Sedimentology
Geometallurgy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
* Total i10 IndexRankings
Ranking Based On Selection: 18

Coal geology
Coal petrology
Coal geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
9
0.900
* Total i10 IndexRankings
Ranking Based On Selection: 19

Geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
* Total i10 IndexRankings
Ranking Based On Selection: 20

Quaternary Geochronology
Cosmogenic nuclides
Quaternary Geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 21

Paleomagnetism and Field geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 22

Palaeontology
Ecology
Evolution
Philosophy of Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 IndexRankings
Ranking Based On Selection: 23

Geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
2
0.500
* Total i10 IndexRankings
Ranking Based On Selection: 24

Geostatistics
mining
machine-learning
environmental science
air quality studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 25

Petrology
Mineralogy
Geochemistry
Pegmatite exploration
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Nic Beukes
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
187
135
0.722
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Jan Kramers
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
101
0.616
isotope geochemistry
geochronology
Axel Hofmann
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
126
102
0.810
Marlina A. Elburg
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
95
0.841
igneous petrology
isotope geochemistry
Dirk Van Reenen
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
93
33
0.355
Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
Fanus Viljoen
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
42
0.553
Geometallurgy
Diamonds
Kimberlites
Wladyslaw Altermann
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
38
0.521
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration
Sebastian Tappe
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
60
0.952
Petrology
Geochemistry
Geochronology
Geodynamics
Economic Geology
Nicola Wagner
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
43
0.796
Geoffrey Hugo Grantham
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
22
0.431
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Bruce Cairncross
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
25
0.510
Coal geology
mineralogy
geoheritage
Michiel De Kock
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
26
0.722
Paleomagnetism
stratigraphy
global change
Maria Ferentinou
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
33
28
0.848
Data centric geotechnics
Geo Hazards
ground monitoring
infrastructure resilience
Georgy Belyanin
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
22
0.688
Hassina Mouri
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
32
20
0.625
Jérémie Lehmann
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
tectonics structural geology orogen exploration
Albertus Smith
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
20
0.909
Geology
Sedimentology
Geometallurgy
Ofentse Marvin Moroeng
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
9
0.900
Coal geology
Coal petrology
Coal geochemistry
Clarisa Vorster
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
7
0.700
Tebogo Vincent Makhubela
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Quaternary Geochronology
Cosmogenic nuclides
Quaternary Geology
Herve Wabo
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
Paleomagnetism and Field geology
Francois Durand
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
Palaeontology
Ecology
Evolution
Philosophy of Science
Lauren Blignaut
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
2
0.500
Mbalenhle Mpanza
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
Geostatistics
mining
machine-learning
environmental science
air quality studies
Juliet Akoh
University of Johannesburg
Johannesburg, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Petrology
Mineralogy
Geochemistry
Pegmatite exploration