Earth & Environmental Sciences
biomarker
100%
oil
85%
sediment
44%
fossil
42%
sulfate
40%
thermal maturity
37%
organic matter
37%
hydrocarbon
35%
petroleum
35%
granite
34%
Raman spectroscopy
34%
Torridonian
34%
continental breakup
34%
Mars
32%
rock
31%
shale
31%
meteorite
30%
carbonate
30%
impact structure
28%
mineral
27%
chert
27%
biodegradation
27%
geochemistry
26%
fluid
26%
fluid inclusion
26%
Cretaceous
26%
oxygenation
25%
source rock
25%
Ordovician
24%
basin
24%
basement rock
24%
diagenesis
24%
limestone
24%
kerogen
24%
carbon
23%
terrestrial environment
23%
Proterozoic
22%
ocean
22%
organic carbon
22%
sulfide
22%
lake
22%
organic compound
21%
Jurassic
21%
geological time
21%
calcite
20%
microbial activity
20%
history
19%
emplacement
19%
material
19%
heavy oil
19%
Physics & Astronomy
biomarkers
67%
sediments
67%
organic compounds
47%
fossils
46%
rocks
39%
ice
37%
mars
36%
minerals
34%
ejecta
30%
meteorite collisions
30%
geochemistry
28%
oils
26%
oceans
25%
hypervelocity impact
25%
sulfates
24%
Raman spectroscopy
23%
gypsum
21%
carbonates
20%
veins
19%
shock
18%
histories
16%
impact melts
16%
spheroids
16%
water
15%
ejection
15%
biosphere
15%
chemistry
15%
molecules
15%
basements
15%
Sudan
14%
sandstones
14%
Iran
13%
uranium isotopes
13%
carbon
13%
projectiles
13%
Raman spectra
12%
biodegradation
12%
hydrocarbons
12%
meteorites
12%
organic materials
12%
fungi
12%
crusts
11%
ecosystems
11%
shales
11%
trace elements
11%
European Space Agency
11%
craters
10%
inclusions
10%
sands
10%
anthracene
10%