Siliceous Flashcards
1
Q
Siliceous sedimentary rocks are formed through the accumulation of what siliceous skeletons
A
diatoms (phytoplankton) and radiolaria (zooplankton)
2
Q
The accumulation of siliceous skeleton is called
A
Siliceous ooze
3
Q
A non-clastic sedimentary rock made up of microcrystalline quartz.
A
Chert
4
Q
The chert has what fracture
A
Conchoidal
5
Q
Black chert
A
Flint
6
Q
Red chert
A
Jasper
7
Q
Green chert
A
Prase
8
Q
Concentric chert
A
Chalcedony
9
Q
Rocks with high
concentrations of phosphates.
A
Phosphorites
10
Q
A calcium phosphate mineral.
A
Francolite
11
Q
Fossilized feces of animals that is high in phosphates.
A
Coprolite