World Scientist and University Rankings 2025
Germany Engineering & Technology / Petroleum Engineering 50 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 29, 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 (873.688) 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
Geochronology
Isotope Geochemistry
LA-ICP-MS
Laser ablation ICP-MS
Petrology
Metrics
H-Index
i10 Index
Citation Counts
91
375
32,507
* Total H IndexRankings
Ranking Based On Selection: 2
Petrophysics
Metrics
H-Index
i10 Index
Citation Counts
64
136
15,910
* Total H IndexRankings
Ranking Based On Selection: 3
Peteoleum Geology
Metrics
H-Index
i10 Index
Citation Counts
60
263
17,447
* Total H IndexRankings
Ranking Based On Selection: 4
Petrology
Geochemistry
Geodynamics
Metrics
H-Index
i10 Index
Citation Counts
55
183
11,194
* Total H IndexRankings
Ranking Based On Selection: 5
Geometallurgy
Economic Geology
Petrology
Resource Technology
Metrics
H-Index
i10 Index
Citation Counts
51
178
11,055
* Total H IndexRankings
Ranking Based On Selection: 6
Eclogites
granulites
geodynamics
Metrics
H-Index
i10 Index
Citation Counts
51
81
9,133
* Total H IndexRankings
Ranking Based On Selection: 7
Petrology
Geochemistry
Metrics
H-Index
i10 Index
Citation Counts
48
74
9,657
* Total H IndexRankings
Ranking Based On Selection: 8
Petrology
mineralogy
geochemistry
Metrics
H-Index
i10 Index
Citation Counts
46
96
5,611
* Total H IndexRankings
Ranking Based On Selection: 9
Geosciences
Metrics
H-Index
i10 Index
Citation Counts
43
68
5,793
* Total H IndexRankings
Ranking Based On Selection: 10
Petrology of metamorphic rocks
metamorphic processes
water-rock interaction
geothermal fluids
fluids in the crust
Metrics
H-Index
i10 Index
Citation Counts
42
97
11,621
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 H IndexRankings
Ranking Based On Selection: 11
Geochemistry
Petrology
Metrics
H-Index
i10 Index
Citation Counts
39
77
4,574
* Total H IndexRankings
Ranking Based On Selection: 12
Petrology
Cosmochemistry
Geochemistry
Isotopes
meteorites
Metrics
H-Index
i10 Index
Citation Counts
38
62
6,835
* Total H IndexRankings
Ranking Based On Selection: 13
Mineralogy
Geochemistry
Petrology
Crystallography
Metrics
H-Index
i10 Index
Citation Counts
37
86
4,833
* Total H IndexRankings
Ranking Based On Selection: 14
volcanology
petrology
Metrics
H-Index
i10 Index
Citation Counts
35
59
3,948
* Total H IndexRankings
Ranking Based On Selection: 15
Petrology
Isotope geochemistry
Metrics
H-Index
i10 Index
Citation Counts
35
58
3,805
* Total H IndexRankings
Ranking Based On Selection: 16
Mineralogy
Experimental Petrology
Silicate Melts
Geoscience Center Göttingen
Metrics
H-Index
i10 Index
Citation Counts
33
61
3,446
* Total H IndexRankings
Ranking Based On Selection: 17
Experimental petrology and geochemistry
Microprobe technique
Metrics
H-Index
i10 Index
Citation Counts
31
51
2,988
* Total H IndexRankings
Ranking Based On Selection: 18
Petrology
Geochemistry
Economic Geology
Metrics
H-Index
i10 Index
Citation Counts
31
43
2,644
* Total H IndexRankings
Ranking Based On Selection: 19
Geophysik
Metrics
H-Index
i10 Index
Citation Counts
30
56
3,579
* Total H IndexRankings
Ranking Based On Selection: 20
Petrology
Mineralogy
Microanalysis
Metrics
H-Index
i10 Index
Citation Counts
28
39
2,401
* Total H IndexRankings
Ranking Based On Selection: 21
Petroleum Engineering
Underground Gas storage
CCS/CCUS
Geothermal Engineering
Hydrogen storage
Metrics
H-Index
i10 Index
Citation Counts
26
61
2,612
* Total H IndexRankings
Ranking Based On Selection: 22
Flow in Porous Media
Petroleum Engineering
Multiscale Imaging
Optical petrography
Metrics
H-Index
i10 Index
Citation Counts
25
34
3,221
* Total H IndexRankings
Ranking Based On Selection: 23
Petrology
Mineralogy
Geochemistry
Cosmochemistry
Metrics
H-Index
i10 Index
Citation Counts
23
42
3,223
* Total H IndexRankings
Ranking Based On Selection: 24
Mineralogy
Petrology
Geochemistry
Crystal nucleation and growth
mineral-fluid interface processes
Metrics
H-Index
i10 Index
Citation Counts
20
23
1,392
* Total H IndexRankings
Ranking Based On Selection: 25
Petrology
Geodynamics
Numerical modelling
MAGEMin
Metrics
H-Index
i10 Index
Citation Counts
17
22
740
Axel Gerdes
Goethe University Frankfurt
Frankfurt, Germany
Metrics
H-Index
i10-Index
Citation Counts
91
375
32,507
Geochronology
Isotope Geochemistry
LA-ICP-MS
Laser ablation ICP-MS
Petrology
Bernhard Krooss
Metrics
H-Index
i10-Index
Citation Counts
64
136
15,910
Zhi Yang
Metrics
H-Index
i10-Index
Citation Counts
60
263
17,447
Hans Joachim Massonne
Universität Stuttgart
Stuttgart, Germany
Metrics
H-Index
i10-Index
Citation Counts
55
183
11,194
Petrology
Geochemistry
Geodynamics
Jens Gutzmer
Metrics
H-Index
i10-Index
Citation Counts
51
178
11,055
Geometallurgy
Economic Geology
Petrology
Resource Technology
Patrick J O Brien
Universität Potsdam
Potsdam, Germany
Metrics
H-Index
i10-Index
Citation Counts
51
81
9,133
Eclogites
granulites
geodynamics
Michael Marks
Universität Tubingen
Tübingen, Germany
Metrics
H-Index
i10-Index
Citation Counts
46
96
5,611
Petrology
mineralogy
geochemistry
Volker Schenk
Ruprecht Karls Universität Heidelberg
Heidelberg, Germany
Metrics
H-Index
i10-Index
Citation Counts
43
68
5,793
Kurt Bucher
Universität Freiburg
Freiburg, Germany
Metrics
H-Index
i10-Index
Citation Counts
42
97
11,621
Petrology of metamorphic rocks
metamorphic processes
water-rock interaction
geothermal fluids
fluids in the crust
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!
Sonja Aulbach
Goethe University Frankfurt
Frankfurt, Germany
Metrics
H-Index
i10-Index
Citation Counts
39
77
4,574
Geochemistry
Petrology
Jutta Zipfel
Metrics
H-Index
i10-Index
Citation Counts
38
62
6,835
Petrology
Cosmochemistry
Geochemistry
Isotopes
meteorites
Bernd Wunder
Metrics
H-Index
i10-Index
Citation Counts
37
86
4,833
Mineralogy
Geochemistry
Petrology
Crystallography
Jonathan Castro
Helmholtz Institut Mainz
Mainz, Germany
Metrics
H-Index
i10-Index
Citation Counts
35
59
3,948
volcanology
petrology
Stefan Jung
Universität Hamburg
Hamburg, Germany
Metrics
H-Index
i10-Index
Citation Counts
35
58
3,805
Petrology
Isotope geochemistry
Burkhard C Schmidt
Georg-August-Universität Göttingen
Göttingen, Germany
Metrics
H-Index
i10-Index
Citation Counts
33
61
3,446
Mineralogy
Experimental Petrology
Silicate Melts
Geoscience Center Göttingen
Renat Almeev
Universität Hannover
Hannover, Germany
Metrics
H-Index
i10-Index
Citation Counts
31
51
2,988
Experimental petrology and geochemistry
Microprobe technique
David Dolejs
Universität Freiburg
Freiburg, Germany
Metrics
H-Index
i10-Index
Citation Counts
31
43
2,644
Petrology
Geochemistry
Economic Geology
Weller A
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
Metrics
H-Index
i10-Index
Citation Counts
30
56
3,579
Niels Jöns
Ruhr Universität Bochum
Bochum, Germany
Metrics
H-Index
i10-Index
Citation Counts
28
39
2,401
Petrology
Mineralogy
Microanalysis
Leonhard Ganzer
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
Metrics
H-Index
i10-Index
Citation Counts
26
61
2,612
Petroleum Engineering
Underground Gas storage
CCS/CCUS
Geothermal Engineering
Hydrogen storage
Matthew Andrew
Carl Zeiss AG
Oberkochen, Germany
Metrics
H-Index
i10-Index
Citation Counts
25
34
3,221
Flow in Porous Media
Petroleum Engineering
Multiscale Imaging
Optical petrography
Astrid Holzheid
Metrics
H-Index
i10-Index
Citation Counts
23
42
3,223
Petrology
Mineralogy
Geochemistry
Cosmochemistry
Jörn Hövelmann
Metrics
H-Index
i10-Index
Citation Counts
20
23
1,392
Mineralogy
Petrology
Geochemistry
Crystal nucleation and growth
mineral-fluid interface processes
Nicolas Riel
Helmholtz Institut Mainz
Mainz, Germany
Metrics
H-Index
i10-Index
Citation Counts
17
22
740
Petrology
Geodynamics
Numerical modelling
MAGEMin