Earth & Environmental Sciences
rift zone
100%
lake
71%
diatom
54%
sedimentation
41%
wetland
40%
thermal spring
35%
Pleistocene
32%
sediment
31%
basin
25%
lake level
23%
silica
21%
Holocene
20%
flora
20%
saline lake
20%
swamp
18%
lacustrine deposit
16%
substrate
15%
travertine
15%
groundwater
15%
tufa
15%
stratigraphy
15%
lake basin
14%
carbonate
14%
calcite
14%
trace fossil
14%
history
13%
diatomite
13%
climate
12%
East Africa
12%
geochemistry
11%
Central Africa
11%
tectonics
11%
aridity
11%
mineralogy
10%
clay
10%
paleoclimate
10%
gorge
9%
water
9%
opal
9%
sinter
8%
arid environment
8%
playa
8%
lake water
8%
environmental change
8%
plain
8%
marsh
8%
alkaline water
8%
shoreline
8%
mud
7%
river
7%
Agriculture & Biology
Kenya
63%
Bacillariophyceae
43%
lakes
43%
valleys
36%
basins
34%
sediments
32%
stratigraphy
29%
springs (water)
27%
Aulacoseira
26%
wetlands
24%
hot springs
23%
salt lakes
21%
swamps
14%
tectonics
13%
Nitzschia
13%
flora
12%
silica
11%
groundwater
11%
dry environmental conditions
11%
diatomaceous earth
11%
climate
11%
anthropogenic activities
10%
Greece
9%
geochemistry
9%
Cyclotella
9%
China
9%
carbonates
8%
bioturbation
8%
Lake Malawi
8%
fossils
8%
Pinnularia
7%
blisters
7%
organic matter
7%
lacustrine sediments
7%
Stephanodiscus
6%
Trachytes
6%
Republic of North Macedonia
6%
clay
6%
weathering
6%
marshes
6%
water
6%
wet environmental conditions
6%
Iceland
5%
harbors (waterways)
5%
Central Africa
5%
soil organic matter
5%
water resources
5%
history
5%
vegetation
5%
soil formation
5%
