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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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NAD 83 vs NAD 27

Hello grind GIS people, again I thought to write on the difference and this time between NAD 83 and NAD 27. I have listed 9 differences between these two.   1.    North American Datum 27 (NAD 27) is based on Clarke Ellipsoid of 1866 which is calculated by manual surveying of the content, whereas NAD 83...

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