Assertion: aquifer's thickness | /r/CapableOf | vary across the study area
Facets:
value: considerably
type: DEGREE
Source sentences:
text: The total thickness of sedimentary rocks above the Precambrian varies considerably across the study area ranging from less than 2,000 ft. in southeastern Colorado on the Sierra Grande and Apishapa uplifts to almost 7,000 ft. in the western Kansas basin.