Earth & Environmental Sciences
platinum group element
100%
impactite
56%
impactor
51%
cratering
37%
deep drilling
37%
crater
36%
Younger Dryas
32%
plasma
21%
iron meteorite
19%
iron
18%
heat production
17%
transition
17%
meteorite
16%
isotopic ratio
16%
mass spectrometry
15%
plate tectonics
15%
chondrite
15%
project
14%
paleoclimatology
13%
Archean
13%
siderophile element
13%
paleoceanography
12%
noble gas
11%
geological record
10%
biogeochemical cycle
10%
paleoclimate
9%
tectonic plate
9%
geochronology
9%
komatiite
9%
catastrophic event
9%
Santonian
8%
plate motion
8%
sediment
8%
marine record
7%
Cretaceous
7%
anomaly
7%
suevite
7%
iridium
7%
geology
7%
shell
7%
ecology
7%
normal fault
7%
isotope
6%
glaciation
6%
niche
6%
salinity
6%
Deep Sea Drilling Project
6%
acid digestion
6%
emplacement
6%
carbonate
6%
Ocean Drilling Program
6%
impact structure
6%
cavity
6%
basin
5%
indicator
5%
remobilization
5%
infill
5%
fossil
5%
rock
5%