| 1 | Geophysics (University of California, Los Angeles) | 42 | 1.4K | 18 | 39 |
| 2 | Geology (University of New Mexico) | 37 | 1.4K | 7 | 6 |
| 3 | Geophysics (University of Hawaiʻi at Mānoa) | 18 | 773 | 25 | 25 |
| 4 | Earth Science (University of Hawaiʻi at Mānoa) | 14 | 766 | 32 | 40 |
| 5 | Chemistry (University of Arkansas) | 14 | 432 | 51 | 58 |
| 6 | Astronomy (University of Washington) | 5 | 416 | 16 | 13 |
| 7 | Chemistry (University of California, San Diego) | 7 | 392 | 224 | 222 |
| 8 | Chemistry (Purdue University) | 12 | 386 | 178 | 219 |
| 9 | Biochemistry (University of Arkansas) | 11 | 339 | 48 | 58 |
| 10 | Astronomy (University of Minnesota) | 8 | 329 | 67 | 59 |
| 11 | Geology (University of Delaware) | 6 | 308 | 10 | 12 |
| 12 | Geology (University of Hawaiʻi at Mānoa) | 12 | 307 | 14 | 24 |
| 13 | Geology (University of Pittsburgh) | 5 | 216 | 55 | 43 |
| 14 | Planetary Science (University of Pittsburgh) | 4 | 215 | 29 | 34 |
| 15 | Chemistry (University of Chicago) | 7 | 209 | 136 | 172 |
| 16 | Chemistry (University of California, Los Angeles) | 6 | 200 | 293 | 339 |
| 17 | Geology (University of Edinburgh) | 5 | 189 | 47 | 53 |
| 18 | Geophysics (University of Edinburgh) | 4 | 182 | 43 | 49 |
| 19 | Geochemistry (University of Vienna) | 10 | 173 | 9 | 14 |
| 20 | Geology (University of Houston) | 6 | 171 | 4 | 5 |
| 21 | Chemistry (Rutgers University) | 6 | 170 | 199 | 244 |
| 22 | Biochemistry (University of California, Los Angeles) | 3 | 167 | 292 | 291 |
| 23 | Chemistry (Oregon State University) | 6 | 161 | 108 | 140 |
| 24 | Geology (Brooklyn College) | 2 | 147 | 25 | 22 |
| 25 | Geology (Arizona State University) | 7 | 142 | 19 | 49 |
| 26 | Geophysics (University of Hawaii) | 3 | 141 | 95 | 105 |
| 27 | Geology (University of the Witwatersrand) | 4 | 138 | 29 | 29 |
| 27 | Economic Geology (University of the Witwatersrand) | 4 | 138 | 10 | 13 |
| 29 | Geology (Rice University) | 12 | 127 | 10 | 37 |
| 30 | Astronomy (Clemson University) | 2 | 118 | 149 | 117 |
| 31 | Civil Engineering (University of Notre Dame) | 2 | 108 | 119 | 135 |
| 32 | Chemistry (Arizona State University) | 3 | 104 | 216 | 261 |
| 33 | Geophysics (Rice University) | 7 | 103 | 15 | 33 |
| 34 | Geology (State University of New York) | 2 | 95 | 33 | 36 |
| 35 | Geology (University of New Brunswick) | 1 | 93 | 53 | 35 |
| 36 | Chemistry (University of Hawaii) | 2 | 86 | 98 | 93 |
| 37 | Sedimentology (University of Miami) | 1 | 84 | 14 | 9 |
| 38 | Geology (McMaster University) | 4 | 78 | 80 | 131 |
| 39 | Chemistry (Missouri University of Science and Technology) | 3 | 76 | 129 | 165 |
| 40 | Geology (Yale University) | 2 | 75 | 145 | 187 |
| 41 | Chemical Engineering (Massachusetts Institute of Technology) | 1 | 73 | 514 | 459 |
| 42 | Geology (University of Manchester) | 2 | 71 | 37 | 46 |
| 43 | Geology (University of Melbourne) | 3 | 70 | 27 | 29 |
| 44 | Metallurgy (University of Manchester) | 4 | 67 | 18 | 21 |
| 45 | Geophysics (Yale University) | 1 | 65 | 197 | 191 |
| 46 | Chemistry (Nihon University) | 3 | 61 | 157 | 174 |
| 47 | Geography (University of Sussex) | 2 | 60 | 84 | 124 |
| 48 | Chemistry (Texas A&M University) | 3 | 59 | 294 | 366 |
| 49 | Astronomy (Rice University) | 8 | 57 | 59 | 143 |
| 50 | Geology (University of Hawaii) | 1 | 55 | 79 | 96 |
| 50 | Chemistry (University of Hawaiʻi at Mānoa) | 2 | 55 | 77 | 104 |
| 52 | Astronomy (University of Hawaiʻi at Mānoa) | 1 | 53 | 64 | 38 |
| 53 | Chemistry (Iowa State University) | 1 | 51 | 298 | 274 |
| 54 | Astrophysics (Harvard University) | 2 | 50 | 39 | 60 |
| 55 | Geology (Makerere University) | 1 | 49 | 27 | 28 |
| 56 | Mineralogy (University of Cambridge) | 2 | 46 | 10 | 19 |
| 57 | Geography (University of Oxford) | 1 | 41 | 477 | 454 |
| 57 | Chemistry (Tokyo Metropolitan University) | 1 | 41 | 335 | 289 |
| 59 | Geology (Stanford University) | 2 | 38 | 54 | 77 |
| 59 | Mineralogy (University of Bern) | 1 | 38 | 7 | 15 |
| 61 | Materials Science (Lehigh University) | 2 | 37 | 107 | 133 |
| 62 | Geology (Stockholm University) | 1 | 36 | 172 | 214 |
| 62 | Geochemistry (Stockholm University) | 1 | 36 | 95 | 112 |
| 62 | Biochemistry (Arizona State University) | 1 | 36 | 255 | 301 |
| 62 | History (University of Chicago) | 2 | 36 | 53 | 54 |
| 62 | Geology (University of Chicago) | 2 | 36 | 12 | 21 |
| 62 | Chemistry (Gunma University) | 2 | 36 | 126 | 160 |
| 68 | Geology (University of Tasmania) | 1 | 35 | 38 | 37 |
| 69 | Chemistry (University of Kentucky) | 3 | 34 | 213 | 361 |
| 70 | Geophysics (University of Copenhagen) | 1 | 31 | 47 | 55 |
| 70 | Geology (Lawrence University) | 8 | 31 | 1 | 21 |
| 72 | Geology (Texas Christian University) | 8 | 30 | 3 | 61 |
| 73 | Geophysics (University of Adelaide) | 1 | 29 | 59 | 73 |
| 73 | Geochemistry (Pennsylvania State University) | 2 | 29 | 20 | 34 |
| 73 | Geology (University of Adelaide) | 1 | 29 | 64 | 75 |
| 76 | Astronomy (Vrije Universiteit Amsterdam) | 1 | 25 | 202 | 236 |
| 77 | Chemistry (University of Tokyo) | 2 | 24 | 590 | 781 |
| 78 | Oceanography (University of California, San Diego) | 2 | 22 | 569 | 825 |
| 78 | Solid State Physics (University of Tokyo) | 1 | 22 | 238 | 239 |
| 78 | Nuclear Physics (Australian National University) | 2 | 22 | 59 | 92 |
| 81 | Economic Geology (University of Texas at Austin) | 1 | 20 | 156 | 179 |
| 82 | Astronomy (University of California, Los Angeles) | 19 | 17 | 53 | 186 |
| 82 | Geology (University of Otago) | 2 | 17 | 99 | 155 |
| 82 | Mineralogy (Pennsylvania State University) | 1 | 17 | 26 | 32 |
| 82 | Geology (West Texas A&M University) | 1 | 17 | 2 | 2 |
| 86 | Chemistry (Douglass Residential College) | 2 | 15 | 7 | 28 |
| 87 | Chemistry (Indian Institute of Technology Kanpur) | 1 | 13 | 201 | 240 |
| 88 | Geology (University of Alberta) | 2 | 12 | 54 | 101 |
| 88 | Geophysics (Pennsylvania State University) | 1 | 12 | 13 | 15 |
| 88 | Metallurgy (Massachusetts Institute of Technology) | 2 | 12 | 42 | 69 |
| 88 | Planetary Science (California Institute of Technology) | 1 | 12 | 48 | 87 |
| 92 | Geophysics (University of Texas at Austin) | 1 | 10 | 122 | 157 |
| 92 | Geology (University of Toronto) | 3 | 10 | 74 | 185 |
| 92 | Applied Physics (Curtin University) | 1 | 10 | 122 | 209 |
| 92 | History (University of Illinois at Chicago) | 3 | 10 | 19 | 63 |
| 96 | Geology (University of California, Los Angeles) | 2 | 9 | 33 | 66 |
| 96 | Metallurgy (Technical University of Denmark) | 3 | 9 | 6 | 23 |
| 98 | Geology (University of Copenhagen) | 1 | 8 | 154 | 255 |
| 98 | Geophysics (Louisiana State University) | 2 | 8 | 102 | 184 |
| 98 | Geology (Louisiana State University) | 2 | 8 | 105 | 197 |
| 98 | Petrology (University of Cambridge) | 1 | 8 | 21 | 28 |
| 102 | Astronomy (University of Southern California) | 9 | 7 | 55 | 215 |
| 102 | Geophysics (University of the Witwatersrand) | 1 | 7 | 12 | 19 |
| 104 | Chemistry (McMaster University) | 1 | 6 | 296 | 428 |
| 104 | Petrology (University of Copenhagen) | 1 | 6 | 10 | 15 |
| 106 | Geology (University of Maryland) | 1 | 5 | 140 | 219 |
| 106 | Geology (University of South Carolina) | 1 | 5 | 65 | 108 |
| 106 | Biochemistry (Massey University) | 3 | 5 | 67 | 173 |
| 106 | Computer Science (University of California, San Diego) | 1 | 5 | 416 | 649 |
| 106 | Astronomy (University of California, Berkeley) | 1 | 5 | 59 | 97 |
| 106 | Chemistry (Tokyo University of Science) | 1 | 5 | 417 | 573 |
| 106 | Chemistry (Massey University) | 3 | 5 | 104 | 230 |
| 106 | Electrical Engineering (University of California, San Diego) | 1 | 5 | 117 | 173 |
| 106 | Volcanology (University of Hawaii) | 1 | 5 | 9 | 12 |
| 115 | Planetary Science (Massachusetts Institute of Technology) | 1 | 4 | 52 | 99 |
| 115 | Geography (University of Edinburgh) | 1 | 4 | 198 | 373 |
| 115 | Geology (Kyoto University) | 1 | 4 | 70 | 96 |
| 115 | Mineralogy (Kyoto University) | 1 | 4 | 68 | 95 |
| 115 | Geology (University of Canterbury) | 1 | 4 | 33 | 58 |
| 115 | Geology (California State University, Fresno) | 1 | 4 | 5 | 14 |
| 115 | Geology (Universiti Malaya) | 1 | 4 | 106 | 179 |
| 115 | Classics (University of California, Irvine) | 1 | 4 | 5 | 1 |
| 123 | Applied Physics (University of North London) | 1 | 3 | 5 | 11 |
| 123 | Geology (University of Glasgow) | 1 | 3 | 44 | 73 |
| 123 | Geology (Charles University) | 1 | 3 | 72 | 113 |
| 126 | Geochemistry (ETH Zürich) | 1 | 2 | 98 | 176 |
| 126 | Geology (University of Pretoria) | 1 | 2 | 59 | 119 |
| 126 | Chemistry (Victoria University of Wellington) | 1 | 2 | 148 | 221 |
| 129 | Geochemistry (Utrecht University) | 1 | 1 | 136 | 223 |
| 129 | Atmospheric Science (University of Miami) | 1 | 1 | 396 | 602 |
| 129 | Geochemistry (University of Cape Town) | 1 | 1 | 18 | 41 |
| 129 | Education (Nagoya University) | 1 | 1 | 233 | 428 |
| 129 | Dynamics (John Jay College of Criminal Justice) | 1 | 1 | 42 | 55 |
| 129 | Chemistry (Umeå University) | 1 | 1 | 449 | 687 |
| 129 | Marine Geology (University of Miami) | 1 | 1 | 62 | 110 |
| 129 | Geophysics (University of Miami) | 1 | 1 | 62 | 112 |
| 129 | Geology (Lakehead University) | 1 | 1 | 36 | 80 |
| 129 | Electronics (University of Utah) | 1 | 1 | 32 | 55 |
| 129 | Geology (Nagoya University) | 1 | 1 | 3 | 11 |
| 129 | Nuclear Chemistry (University of Cologne) | 1 | 1 | 21 | 42 |
| 129 | Chemistry (Chadron State College) | 2 | 1 | 1 | 1 |
| 142 | Geology (University of Kansas) | 1 | 0 | 139 | 217 |
| 142 | Materials Science (University of Manchester) | 1 | 0 | 163 | 263 |
| 142 | Geology (Dr. Hari Singh Gour University) | 2 | 0 | 8 | 15 |
| 142 | Mathematics (University of North Carolina at Chapel Hill) | 1 | 0 | 174 | 335 |
| 142 | Geology (Boise State University) | 1 | 0 | 13 | 40 |
| 142 | Geophysics (Boise State University) | 1 | 0 | 7 | 28 |