Earth & Environmental Sciences
anoxia
26%
basin
5%
carbon
6%
carbon cycle
22%
carbon isotope
10%
chemical process
11%
chemostratigraphy
16%
deep water
37%
degradation
7%
diagenesis
66%
geochemistry
9%
geological record
25%
glaciation
67%
Hirnantian
100%
isotope
8%
mass extinction
13%
method
2%
ocean
6%
open ocean
23%
Ordovician
63%
organic carbon
8%
organic matter
15%
outcrop
29%
oxygenation
13%
perturbation
18%
physical process
10%
principal component analysis
9%
process water
13%
pyrite
20%
rate
3%
redox conditions
78%
sea
6%
sea level
8%
seawater
48%
stable isotope
9%
temperature
4%
water column
18%
weathering
9%
Physics & Astronomy
anoxia
47%
carbon
18%
carbon cycle
48%
carbon isotopes
21%
chemistry
58%
constrictions
12%
coolers
14%
deep water
73%
degradation
10%
deposits
12%
estimates
7%
extinction
11%
geochemistry
21%
gradients
8%
isotopes
23%
oceans
44%
outcrops
68%
oxygenation
17%
perturbation
18%
principal components analysis
17%
pyrites
37%
sea level
18%
shelves
16%
shift
8%
temperature
4%
water
15%
weathering
19%
Chemical Compounds
Amount
9%
Carbon Atom
10%
Carbon Cycle
69%
Chemistry
39%
Column Like Crystal
13%
Environment
25%
Geochemistry
31%
Isotope
19%
Organic Carbon
24%
Organic Matter
48%
Oxygenation
25%
Pyrite
55%
Redox Condition
97%
Stable Isotope
24%
Weathering
27%