Earth & Environmental Sciences
transform fault
99%
mid-ocean ridge basalt
57%
upper crust
55%
lava
54%
crystallization
42%
transform
41%
crust
40%
spreading center
32%
submersible
30%
mantle source
27%
oceanic crust
26%
trend
26%
rate
26%
dike
24%
fault zone
24%
rare earth element
22%
volcanic eruption
22%
fractionation
22%
basalt
22%
magma
20%
trace element
20%
cooling
18%
tectonics
17%
calculation
14%
program
14%
rock
12%
Physics & Astronomy
crusts
100%
escarpments
94%
lava
51%
basalt
45%
mid-ocean ridges
29%
rock intrusions
27%
tectonics
25%
crystallization
24%
trends
23%
magma
23%
fetuses
22%
trace elements
21%
axial flow
20%
volcanic eruptions
19%
fractionation
19%
Earth mantle
18%
rocks
15%
rare earth elements
13%
cooling
10%
estimates
9%
Chemical Compounds
Crystallization
55%
Spreading
42%
Cooling
35%
Fractionation
35%
Lanthanoid Atom
29%
Molecular Cluster
25%
Flow
25%
Time
14%