History of Grand Forks County : with special reference to the first ten years of Grand Forks City, including an historical outline of the Red River Valley
8 II I S TO II f OF GRAND FORKS COUNTY In the western part of the county the uplands consist almost bodily of alternating beds of blue clay and soft shales. Collectively, these Cretaceous strata are about one thousand feet in thickness. The deptli of the overlying drift varies from merely nothing on...
| Format: | Text |
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| Language: | unknown |
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State Historical Society of North Dakota
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| Online Access: | http://cdm16921.contentdm.oclc.org/cdm/ref/collection/ndsl-books/id/38961 |