Assertion: aquifer | /r/MadeOf | sandstone
Facets:
value: mainly
type: DEGREE
value: all of cretaceous age
type: TEMPORAL
value: in the lower peninsula of michigan
type: LOCATION
Source sentences:
text: The aquifer consists primarily of sandstone and is the principal bedrock aquifer in the Lower Peninsula.
text: This aquifer consists of sandstone in the Lower Peninsula of Michigan and is a major aquifer in that area.
text: aquifer consists of sand and sandstone of the Trinity Stage and the younger limestone of the Fredericksburg and the Washita Stages, all of Cretaceous age.
text: Although primary porosity and permeability in the Minnelusa aquifer occur where the aquifer consists mainly of sandstones, substantial secondary porosity and permeability occur where the aquifer consists mainly of carbonate rocks (dolomite and limestone) and calcium sulfate rocks (gypsum and anhydrite).