A Geoglyph Classification System
by Tim McGuinness, Ph.D. for NazcaMystery.com  

On the pages of this website, we attempt to correlate geoglyph artifacts by apparent cultural context and appearance.  This system will help in understanding the geoglyph line and symbol images.
McGuinness Scale Class One Geoglyph - precise object - context consistent Class One: The object conforms with the cultural context of the immediate area and represents the highest degree of precision in construction resulting in straight lines and evenly spaced and proportional symbol elements
McGuinness Scale Class Two Geoglyph - imprecise object - context consistent Class Two: The object conforms with the cultural context of the immediate area and does not represent the highest degree of precision in construction, resulting in more imprecise spacing or alignments
McGuinness Scale Class Three Geoglyph - authenticity questionable object - constructor culture unknown Class Three: The object does not conform to the cultural context of the immediate area and may represent a modern intrusion into the context
McGuinness Scale Class Four Geoglyph - contextual object - object not consistent with local context but with region Class Four: The object does not appear to conform to the cultural context of the immediate area but appears to be consistent with regional cultures representing an isolated or limited intrusion
Class Five Geoglyph - anomalous noncontextual object - object NOT consistent with local context Class Five: The object appears to be anomalous in both context and characteristics, a significant deviation from the essential characteristics of other contextual objects, but does not appear to be a modern intrusion
Geoglyph appears damaged or partially destroyed The object appears substantially damaged, destroyed, or modified
Geoglyph appears substantially intact The object appears substantially intact and viewable
Geoglyph made by removing stones and/or desert pavement exposing soil underneath The object was predominantly constructed by removal of desert pavement or surface layer exposing the soil beneath
Geoglyph made by adding or piling stones The object was predominantly constructed by collection and placement of stones forming the line, geometric, or symbol pattern
Geoglyph is visible from the ground The complete object is clearly viewable from ground level or from below
geoglyph requires elevated viewing The complete object is not clearly viewable from ground level or from below, and must be viewed from above to be seen in its entirety
* developed by Dr. Tim McGuinness - Copyright © 1974 - 2007
Authorization is given to the reprinting & reuse of this system with the copyright notice (source copyright © 1974-2007 Tim McGuinness, Ph.D.) retained and a link back to
www.NazcaMystery.com - derived from an unpublished work.