Physics & Astronomy
habitability
100%
Earth surface
85%
iridium
81%
sediments
80%
bombardment
61%
Greenland
37%
photics
35%
cratering
33%
habitats
31%
impactors
29%
vaporizing
28%
microorganisms
26%
mass distribution
23%
horizon
21%
platinum
21%
low concentrations
21%
iron
15%
Earth & Environmental Sciences
iridium
87%
early Earth
84%
metasediment
77%
sedimentary sequence
47%
sedimentation rate
44%
sediment
31%
cratering
29%
banded iron formation
28%
photic zone
28%
platinum
24%
impactor
24%
chert
24%
power law
20%
deep sea
20%
habitat
13%
distribution
7%
rate
7%
effect
5%
Chemical Compounds
Sedimentation
32%
Mass Transfer
27%
Time
23%
Surface
21%
Vaporization
16%
Platinum
12%
Environment
9%