Compute the gradient of any first-order stream north of the mesa edge and the gradient of any first-order stream south of the mesa edge. On the map label the northern stream “a” and the southern stream “b.

The following questions are based on Figure 39-4, a section of USGS “Dane Canyon, Arizona” quadrangle below, showing the southern edge of the Mogollon Mesa (34°24'33"N, 111°10'52"W), formed by a nearly flat-lying layer of resistant rock (you can view this map in color by going to the Lab Manual website or by scanning the QR code for this exercise).








Environmental & Atmospheric Sciences

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