Assertion: mississippian aquifer | /r/MadeOf | dolomite
Facets:
value: primarily
type: DEGREE
Source sentences:
text: The Mississippian aquifer in Iowa consists of dolomite and forms the bedrock surface in the central and the southeastern parts of the State (figs.
text: About: The Mississippian aquifer primarily consists of limestones and dolomites that formed when Iowa was covered with a warm, tropical sea.