Assertion: aquifer | /r/HasProperty | underlain
Facets:
value: by a confining unit
type: OTHER
value: by precambrian rocks
type: OTHER
value: by the basement
type: LOCATION
value: directly
type: MANNER
value: by the crystalline-rock aquifer
type: OTHER
value: by shaly dolomite of ordovician age
type: OTHER
value: by bedrock
type: OTHER
value: throughout much
type: DEGREE
value: by the nearly impermeable pierre shale
type: OTHER
Source sentences:
text: The percentage of the aquifer that is directly underlain by each bedrock unit
text: The aquifer is underlain by the nearly impermeable Pierre Shale, which forms the base of the aquifer system.
text: The aquifer is underlain and confined by low-permeability rocks that range in age from Precambrian to Jurassic.
text: The aquifer is underlain by Precambrian crystalline rocks throughout much of its extent but overlaps onto rocks of Pennsylvanian through Cambrian age toward the south.
text: The aquifer is underlain by a confining unit that consists mostly of limestone and shale of Pennsylvanian and Mississippian ages (Bayport-Michigan confining unit, fig.
text: The aquifer is underlain by shaly dolomite of Ordovician age that forms the lower part of the Maquoketa confining unit (fig.
text: In Minnesota, Iowa, and Wisconsin, the Ironton-Galesville aquifer is overlain by the St. Lawrence-Franconia confining unit, and, except in Michigan, the aquifer is underlain by the Eau Claire confining unit.
text: The aquifer is underlain by the crystalline-rock aquifer (fig.
text: In some areas, these deposits are absent and the aquifer is directly underlain by bedrock, mainly sandstone.
text: The aquifer is underlain by Precambrian rocks and is overlain and separated from the Ellenburger-San Saba aquifer by the Cap Mountain Limestone and the Lion Mountain Sandstone Members of the Riley Formation.
text: They are overlain by the upper and middle aquifers and thick clay, coal and limestone aquitards and are underlain by the basement.
text: They are overlain by the upper and middle aquifers and aquitards and are underlain by the basement which was formed between 65 and 545 million years ago.