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