Earth & Environmental Sciences
rift zone
100%
lake
70%
diatom
51%
sedimentation
39%
wetland
38%
thermal spring
34%
Pleistocene
32%
sediment
30%
basin
25%
lake level
22%
Holocene
20%
silica
20%
flora
19%
saline lake
19%
swamp
17%
lacustrine deposit
16%
lake basin
15%
substrate
15%
travertine
14%
groundwater
14%
tufa
14%
carbonate
14%
stratigraphy
14%
calcite
13%
trace fossil
13%
history
12%
diatomite
12%
climate
12%
East Africa
11%
geochemistry
11%
Central Africa
11%
tectonics
11%
aridity
11%
mineralogy
10%
animal
9%
clay
9%
paleoclimate
9%
gorge
9%
water
9%
opal
8%
sinter
8%
arid environment
8%
playa
8%
lake water
8%
environmental change
8%
plain
7%
marsh
7%
alkaline water
7%
shoreline
7%
mud
7%
Agriculture & Biology
Kenya
59%
Bacillariophyceae
41%
lakes
40%
valleys
34%
basins
33%
sediments
30%
stratigraphy
27%
springs (water)
26%
Aulacoseira
24%
wetlands
23%
hot springs
22%
salt lakes
20%
swamps
13%
tectonics
12%
Nitzschia
12%
flora
11%
silica
11%
groundwater
11%
dry environmental conditions
10%
diatomaceous earth
10%
climate
10%
anthropogenic activities
9%
Greece
9%
geochemistry
9%
Cyclotella
9%
China
8%
carbonates
8%
bioturbation
8%
Lake Malawi
8%
fossils
7%
Pinnularia
7%
blisters
6%
organic matter
6%
lacustrine sediments
6%
Stephanodiscus
6%
Trachytes
6%
Republic of North Macedonia
6%
clay
6%
weathering
6%
marshes
6%
water
6%
wet environmental conditions
5%
Iceland
5%
harbors (waterways)
5%
Central Africa
5%
soil organic matter
5%
water resources
5%
history
5%
