Earth and Planetary Sciences
Impact Structure
100%
Breccia
68%
Impact Melt
38%
Spherule
35%
Ejecta
31%
Trace Element
31%
Tektite
30%
Basalt
24%
Rare Earth Element
23%
Suevite
21%
Isotopic Composition
21%
Siderophile Element
19%
Magma
19%
Granitoid
17%
Volcanic Rock
17%
Craton
16%
Zircon
16%
Chondrite
14%
Impactite
13%
Clinopyroxene
13%
Platinum Group Element
13%
Petrogenesis
12%
Peridotite
12%
Precambrian
12%
Cratering
12%
Shock Metamorphism
11%
Pyroxene
11%
Iron
10%
Lacustrine Deposit
10%
Fractionation
10%
Cretaceous-Tertiary Boundary
10%
Cathodoluminescence
9%
Greenstone Belt
9%
Terrane
8%
Libyan Desert
8%
Mass Extinction
8%
Flood Basalt
7%
Fractional Crystallization
7%
Tectonics
7%
Atmospherics
7%
Granulite
7%
Porosity
7%
Stable Isotope
7%
Eocene
6%
Borehole
6%
Cristobalite
6%
Shatter Cones
6%
Volcanism
6%
Mafic Rock
6%
Garnet
6%