Earth & Environmental Sciences
Cretaceous
100%
cratering
90%
strontium isotope
83%
crater
65%
emplacement
61%
last deglaciation
59%
stratigraphy
59%
extinction
57%
last glaciation
57%
flood basalt
42%
diatom
40%
lake
40%
mass extinction
39%
isotopic composition
39%
asteroid
36%
Paleogene
34%
paleosalinity
33%
volcanism
31%
oxygen
29%
polar front
29%
paleotemperature
27%
ostracod
25%
meteoric water
24%
Last Glacial Maximum
24%
lake water
22%
Southern Hemisphere
22%
lacustrine deposit
21%
South America
21%
pollen
20%
Northern Hemisphere
20%
transect
19%
geology
17%
Holocene
17%
isotope
16%
fossil
16%
carbonate
15%
transition
14%
carbon
12%
project
11%
index
11%