Earth & Environmental Sciences
anhydrite
10%
calcite
7%
colonization
8%
crater
63%
crater lake
12%
cratering
87%
dating
7%
Eocene
8%
erosion
6%
fill
17%
geological mapping
22%
glass
7%
habitat
5%
heat source
10%
hydrothermal system
10%
impact structure
86%
laboratory research
10%
lacustrine deposit
8%
last glaciation
11%
material
3%
melt
20%
melting
7%
Miocene
7%
oasis
10%
periglacial process
14%
pond
8%
preserve
8%
rock
4%
sampling
5%
sedimentary sequence
10%
silicate
7%
stratigraphy
8%
Physics & Astronomy
calcite
10%
cratering
100%
craters
75%
dating
11%
erosion
8%
glass
4%
habitats
12%
heat sources
9%
hydrothermal systems
15%
impact melts
32%
lakes
11%
melting
6%
oases
15%
rings
5%
rocks
8%
sampling
6%
sediments
10%
silicates
8%
stratigraphy
14%