14
dating
× 4 |
8
age
× 2 |
4
geochronology
× 2 |
3
tibetan-plateau
|
12
geography
|
7
rocks
× 2 |
4
stratigraphy
|
3
plate-tectonics
|
12
mapping
|
7
earth-history
× 2 |
4
fossils
|
3
mountains
|
12
atmosphere
|
6
radioactivity
× 2 |
3
geochemistry
× 2 |
1
open-data
|
12
temperature
|
5
isotopic
|
3
geology
|
0
petrology
|