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X Marks the Spot: #4

By Mark A. Gonzalez
The contest for this issue is a prominent and large landform that extends for 17 miles across central North Dakota. Although the landform is visible from the ground to the trained eye, it is most noticeable from a bird’s eye vantage. The X marks a small segment of this 17-mile-long landform. The landform is typically 250 feet wide at its base and 50 to 70 feet high. When you have identified the landform, submit your name, mailing address, phone number or e-mail address, and responses to these questions.

(1) What is the “formal,” place name of the landform marked by the X's?
(2) What is the geologic, or geomorphic, name for this type of landform?
(3) For extra credit: Explain how this type of landform is created.
Note: hypotheses vary and specific details are widely debated. Any reasonable explanation is acceptable.


X Marks the spot 4 image

Those individuals who submit correct responses will be eligible for prizes. Two names will be drawn at random by the staff of the NDGS. One selected respondent will receive a copy of The Face of North Dakota, and another will receive a Geologic Map of North Dakota.
Please submit responses by 15 Feburary, 2003.  Winners of our drawing and the correct answers will appear on our web site shortly thereafter and in the next issue of the NDGS Newsletter.
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Copyright 2002 North Dakota Geological Survey
Last modified: 09/26/2005