Description: A map from 1911 of a portion of the Front Range in Colorado north of Denver showing the geologic feature of cross folding ‘en échelon’, (short linear features that overlap in a line running obliquely to the strike of the individual features). Place Names: Colorado, longmont, namaq  ISO Topic Categories: geoscientificInformation, 
inlandWaters, 
location  Keywords: Colorado Front Range, physical, physical features, 
geological, geoscientificInformation, 
inlandWaters, 
location, Unknown, 1911 Source: Isaiah Bowman, Ph. D, Forest Physiography (New  York, NY: John Wiley and Sons, 1911) 358 Map Credit: Courtesy the private collection of Roy Winkelman |  
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