Assertion: cretaceous aquifer | /r/MadeOf | limestone
Facets:
value: mostly
type: DEGREE
Source sentences:
text: The Silurian-Devonian aquifer consists mostly of dolomite and limestone in which fracture permeability has been enhanced by solution and extensive karst development.
text: About: The Silurian-Devonian aquifer consists of limestones and dolomites deposited when Iowa was covered by tropical seas during two major systems of geologic time — the Silurian and Devonian.