Earth and Planetary Sciences
Amount
7%
Anomaly
8%
Anthracite
6%
Approach
6%
Aquifer
8%
Area
23%
Arsenic
5%
Average
6%
Bed
12%
Behavior
7%
Black Shale
5%
Carbon
16%
China
11%
Clay
7%
Coal
100%
Combustion
7%
Condition
14%
Content
13%
Contrast
5%
Core
7%
Correlation
7%
Datum
32%
Deformation
9%
Deposit
7%
Deposition
7%
Depth
12%
Difference
8%
Earthquake
9%
Emission
5%
Enrichment
5%
Environment
6%
Estimate
7%
Event
10%
Exhibit
5%
Fault
13%
Fly Ash
19%
Fraction
6%
Gradient
5%
Groundwater
11%
History
5%
Impact
5%
Implication
5%
Information
5%
Institution
5%
Interval
5%
Investigation
41%
Kentucky
34%
Lake
20%
Landscape
7%
Landslide
5%
Lithotype
5%
Maceral
9%
Magnetic Anomaly
5%
Map
7%
Margin
5%
Metamorphism
6%
Mineral
11%
Mississippian
5%
Model
23%
Observation
5%
Organic Matter
5%
Parameter
7%
Particle
5%
Peat
6%
Pennsylvanian
7%
Petrology
5%
Plant
10%
Pyrite
7%
Quartz
6%
Rare Earth Element
13%
Rate
7%
Ratio
9%
Record
10%
Response
8%
Rill
5%
River
11%
Rock
9%
Sample
23%
Sediment
20%
Shape
9%
Show
17%
Site
14%
Soil
11%
State
5%
Structural Basin
26%
Sulphur
8%
Tectonics
9%
Temperature
10%
Time
16%
Trend
7%
United States
7%
United States of America
12%
Value
15%
Variability
6%
Variation
13%
Vitrinite
12%
Water
9%
Wetland
5%
Yield
5%
Zircon
8%