Portland Sand Formation
The Portland Sand Formation is a limestone formation from the Tithonian stage of the Jurassic period on the Isle of Portland, Dorset, England. The formation is made up largely of dolomites but includes siltstones and fine-grained sandstones in its lower parts. It is a sub unit of the Portland Group.
Q23757
limestone
Concept
Q736917
formation
Concept
Q855125
Tithonian
TIME
Q45805
Jurassic
LOC
Q774215
Isle of Portland
LOC
Q23159
Dorset
LOC
Q1134814
dolomite
Concept
Q3399326
Portland Group
ORG
Q97194586
Portland Sand Formation
LOC
instance of
made from material