Description: This is a map of the world showing the distribution of Archean Rocks. "thenon-committal epithet "pre-cambrian" is often appliedÉa lowermost group [of rocks] with a prevailing granitoid, gneissic and schistose facies, mainly of igneous origin" mdash;Enctclopædia Britannica, 1910.
Source: , The Enctclopædia Britannica a Dictionary of Arts, Sciences, Literature and General Information Eleventh Edition Volume II Andros to Austria (New York, NY: The Encyclopædia Britannica Company, 1910) 360
Map Credit: Courtesy the private collection of Roy Winkelman. |
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