The "AD Scientific Index" analyses the academic work of scientists using the H-index, i10 index and number of citations, and provides results that can be used to evaluate the productivity and efficiency of individuals and institutions. In addition to ranking according to "total H-index" for individuals and institutions, you can also see the ranking and analyses according to "last 6 years H-index"and Subject Rankings.
![EJM (John) Carranza](https://cdn.adscientificindex.com/pictures/db/96712.jpg)
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
78
60
0.769
![Nic Beukes](https://cdn.adscientificindex.com/pictures/04/95762.jpg)
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
70
45
0.643
![Jan Kramers](/user/assets/images/profile/no-profile-photo.png)
isotope geochemistry
geochronology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
69
33
0.478
![Roger MH Smith](https://cdn.adscientificindex.com/pictures/57/89586.jpg)
sedimentology
vertebrate palaeontology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
60
39
0.650
![Lewis Ashwal](/user/assets/images/profile/no-profile-photo.png)
Geology
Petrology
Geochemistry
Tectonics
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
60
35
0.583
![Re Schulze](/user/assets/images/profile/no-profile-photo.png)
hydrology
agriculture
climate change
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
57
26
0.456
![Carl Anhaeusser](/user/assets/images/profile/no-profile-photo.png)
Archaean geology
Economic Geology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
54
24
0.444
![Anton Le Roex](/user/assets/images/profile/no-profile-photo.png)
Geochemistry
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
52
29
0.558
![Denis Hughes](/user/assets/images/profile/no-profile-photo.png)
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
52
28
0.538
![Marlina A. Elburg](https://cdn.adscientificindex.com/pictures/fd/93400.jpg)
igneous petrology
isotope geochemistry
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
51
31
0.608
![Gary Stevens](https://cdn.adscientificindex.com/pictures/2f/98047.jpg)
Geology
Petrology
Experimental Petrology
Geochemistry
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
35
0.700
![JD Clemens](https://cdn.adscientificindex.com/pictures/f4/99997.jpg)
geology
petrology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
34
0.680
![Anusuya Chinsamy](https://cdn.adscientificindex.com/pictures/66/104185.jpg)
paleontology
bone histology
paleobiology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
32
0.640
![Bruce S. Rubidge](https://cdn.adscientificindex.com/pictures/ca/105269.jpg)
palaeontology
geology
stratigraphy
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
31
0.620
![Dirk Frei (Né Landwehr)|Dirk Landwehr](https://cdn.adscientificindex.com/pictures/c4/106362.jpg)
Geochronology
Economic Geology
Sedimentology
Laser Ablation
LA-ICP-MS
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
48
33
0.688
![Axel Hofmann](/user/assets/images/profile/no-profile-photo.png)
Archaean geology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
47
37
0.787
![Chris Harris](/user/assets/images/profile/no-profile-photo.png)
geology
stable isotopes
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
47
31
0.660
![Fernando Abdala](/user/assets/images/profile/no-profile-photo.png)
paleontology
zoology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
42
29
0.690
![Dirk Van Reenen](/user/assets/images/profile/no-profile-photo.png)
Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
42
17
0.405
![Wladyslaw Altermann](/user/assets/images/profile/no-profile-photo.png)
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
41
22
0.537
![J Kinnaird](/user/assets/images/profile/no-profile-photo.png)
Geology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
40
25
0.625
![Roger Gibson](/user/assets/images/profile/no-profile-photo.png)
Geoscience
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
40
19
0.475
![David Bell](https://cdn.adscientificindex.com/pictures/18/106116.jpg)
Mantle Geochemistry
Cosmochemistry
Geology of southern Africa and western North America
Natural philosophy
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
39
29
0.744
![Tamiru A. Abiye](https://cdn.adscientificindex.com/pictures/f8/91260.jpg)
Isotope Hydrology/Hydrogeology/Water Science/Water Resources Management/Water Quality
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
38
32
0.842
![Sebastian Tappe](https://cdn.adscientificindex.com/pictures/c2/90402.jpg)
Petrology
Geochemistry
Geochronology
Geodynamics
Economic Geology
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
38
31
0.816
EJM (John) Carranza
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
78
60
0.769
Economic Geology
Mineral Prospectivity Mapping
Exploration Geochemistry
Geological Remote Sensing
Nic Beukes
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
70
45
0.643
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Jan Kramers
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
69
33
0.478
isotope geochemistry
geochronology
Roger MH Smith
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
60
39
0.650
sedimentology
vertebrate palaeontology
Lewis Ashwal
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
60
35
0.583
Geology
Petrology
Geochemistry
Tectonics
Re Schulze
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
57
26
0.456
hydrology
agriculture
climate change
Carl Anhaeusser
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
54
24
0.444
Archaean geology
Economic Geology
Anton Le Roex
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
52
29
0.558
Denis Hughes
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
52
28
0.538
Marlina A. Elburg
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
51
31
0.608
igneous petrology
isotope geochemistry
Gary Stevens
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
35
0.700
Geology
Petrology
Experimental Petrology
Geochemistry
JD Clemens
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
34
0.680
Anusuya Chinsamy
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
32
0.640
paleontology
bone histology
paleobiology
Bruce S. Rubidge
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
50
31
0.620
palaeontology
geology
stratigraphy
Dirk Frei (Né Landwehr)|Dirk Landwehr
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
48
33
0.688
Geochronology
Economic Geology
Sedimentology
Laser Ablation
LA-ICP-MS
Axel Hofmann
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
47
37
0.787
Chris Harris
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
47
31
0.660
Fernando Abdala
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
42
29
0.690
Dirk Van Reenen
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
42
17
0.405
Metamorphic Petrology
Field Geology
Tectonics
Evolution of High-Grade Terranes
Fluids
Wladyslaw Altermann
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
41
22
0.537
Geology and Mineral Deposits
Precambrian
Early Life
CO2 sequestration
J Kinnaird
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
40
25
0.625
Roger Gibson
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
40
19
0.475
David Bell
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
39
29
0.744
Mantle Geochemistry
Cosmochemistry
Geology of southern Africa and western North America
Natural philosophy
Tamiru A. Abiye
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
38
32
0.842
Isotope Hydrology/Hydrogeology/Water Science/Water Resources Management/Water Quality
Sebastian Tappe
H-Index Metrics
Total
Last 6 Years
Last 6 Years / Total
38
31
0.816
Petrology
Geochemistry
Geochronology
Geodynamics
Economic Geology