Earth and Planetary Sciences
United States of America
100%
Holocene
99%
Arizona
85%
Alaska
83%
California
61%
Vegetation
58%
Climate Change
54%
Tectonics
54%
Nevada
51%
Colorado
46%
Zircon
45%
North America
44%
Amino Acid
41%
United States
39%
Magma
38%
Geochronology
31%
Miocene
31%
Eocene
30%
Stratigraphy
28%
Racemization
28%
Lacustrine Deposit
28%
Pleistocene
26%
Paleoclimate
25%
Terrane
25%
Mexico
25%
Fossil
24%
Volcanism
23%
National Parks
23%
Environmental Change
23%
Lithosphere
22%
Late Pleistocene
22%
Pliocene
21%
Basalt
20%
Magmatism
20%
Canada
20%
Utah
19%
Sediment Core
19%
Tephra
18%
Exhumation
18%
Igneous Rock
18%
Atmospherics
17%
Oxygen 18
16%
Climate Variation
16%
Wyoming
16%
Lower California (Mexico)
15%
Planetary Atmosphere
15%
Emissions
14%
Strike-Slip Fault
14%
Trench
14%
Andes
14%
Younger Dryas
14%
Lake Level
13%
Oligocene
13%
Wisconsin
13%
Sea Level
13%
Subsidence
13%
Rifting
13%
Little Ice Age
13%
Late Cretaceous
12%
Carbon Cycle
12%
Rhyolite
12%
Devonian
12%
Fault Zone
12%
Idaho
12%
Protected Area
12%
Spain
12%
Shear Zone
12%
Trough
11%
Sedimentary Rock
11%
British Columbia
11%
Colombia
11%
Early Holocene
11%
Subduction Zone
11%
Accretionary Prism
11%
Diatom
11%
Volcanic Rock
11%
Northern Hemisphere
10%
Basin Evolution
10%
Terrestrial Ecosystem
10%
Accumulation Rate
10%
Plate Boundary
10%
Organic Matter
10%
Paleogene
10%
Land Management
10%
Postglacial
10%
Marine Isotope Stage
10%
Death Assemblage
10%
Permian
9%
Petrography
9%
Climate Modeling
9%
Tibetan Plateau
9%
Land Surface
9%
Carbon Sink
9%
Lava Flow
9%
Upper Mantle
9%
Land Use
9%
Ostracod
9%
Grain Size
9%
Net Ecosystem Exchange
9%
Isotopic Composition
9%
Keyphrases
Arizona
66%
Alaska
64%
North America
41%
Climate Change
36%
Late Holocene
32%
Amino Acid Racemization
28%
Arbuscular Mycorrhizal Fungi
27%
Sierra Nevada
25%
Northern Arizona
25%
Colorado Plateau
24%
Utah
23%
Mexico
23%
Magma
23%
Glacier
22%
Stratigraphy
22%
Early Holocene
21%
Nevada
20%
Zircon
20%
Late Pleistocene
19%
Drought
18%
Carbonate
18%
Terranes
18%
Canyon
18%
California USA
17%
High Elevation
16%
Grand Canyon
16%
Environmental Change
16%
Sedimentary Record
16%
Mycorrhiza
16%
Sediment Core
16%
Creek
15%
Amino Acids
15%
Vegetation Change
15%
Strike-slip Fault
15%
Southwestern United States
15%
Terrestrial Biosphere Model
15%
Tephra
14%
Lake Sediments
14%
20th Century
14%
Rift
14%
Volcano
14%
Volcanism
14%
Tectonics
13%
Heterostraci
13%
Colorado
13%
Arbuscular Mycorrhizal Fungal
13%
Canada
13%
Time Averaging
13%
Volcanic
13%
Ignimbrite
13%
Wyoming
13%
Net Primary Productivity
13%
Detrital Zircon
13%
Lake Mead
13%
Mycorrhizal
13%
High-resolution
13%
Grassland
12%
United States
12%
Sandstone
12%
Mycorrhizal Fungi
12%
Western United States
12%
Gulf of California
12%
Paleoclimate
12%
Idaho
11%
Central Arizona
11%
Younger Dryas
11%
Aging Model
11%
Charcoal
11%
Magmatism
11%
Basalt
11%
British Columbia
11%
Millennial-scale
11%
Little Ice Age
11%
Normal Fault
11%
Wisconsin
11%
Wetlands
11%
Ponderosa pine Forest
11%
Fire History
10%
Late Cretaceous
10%
Southern California
10%
Geochronology
10%
Colombia
10%
Volcanic Rocks
10%
Plant Species
10%
Moraines
10%
Pollen Record
10%
Western North America
10%
Sedimentary Rocks
10%
Oxygen Isotopes
10%
Lower Devonian
10%
Earthquake
9%
Protected Areas
9%
Ponds
9%
Eastern Cordillera
9%
Late Glacial
9%
Forest Restoration
9%
Postglacial
9%
Lava
9%
Death Assemblages
9%
Tectonic Evolution
9%