A
Amplitude: Height
C
Clastic succession: Rocks made of detritus
Conglomerate: Boulders and cobbles cemented together
Cross-sectional: As if cut across
D
Detrital clastic grains: Sand and bigger bits of rock
F
Ferruginous: Iron-bearing
Fold structures: Where the sedimentary and other layers have been squashed and bent by later pressure
Foliated: With layers resulting from later alteration and pressure
H
Hydrothermally altered: Where very hot waters have passed and changed the composition
L
Laminae: Very thin layers
M
Mineral precipitate crust: Rock resulting from chemical deposition
O
Ocelli: Spheroidal structures that form in volcanic rocks
P
Penetrative fabric: Where layers formed by pressure and heat cut across older structures
Platey: Breaks into sheets of rocks
Precipitative cones: Conical stromatolite-like structures perhaps formed without microbes
Pillow basalts: Volcanic lava that flowed under water, cooled quickly, and formed mounds that look like pillows
Pyrophylite: A mineral made of aluminiunm and silicon
S
Silica: Oxidised silicon: SiO2
Schisty: Similar to foliated
Subaeriel: Under the atmosphere. Soil is an example
U
Unconformity: Where a much older rock is overlain by one much younger
V
Vitrification: Where some process has made a glass-like rock
