Tags: gneiss

Prospecting with Geological Maps

Feb 16, 2012

The search for potential aggregate sources begins with the proper framework. By Bill Langer When I was studying geology in college, one of my professors had us prepare a geologic map of a rather small area near campus. The main goal was ...

Carved in Stone

Oct 03, 2011

V is for Verde Antique This green beauty gob-smacks our favorite geologist. By Bill Langer Verd-antique, (verd-an-teek) — etym., viridis (vir’-e-dis), green, and antiquus (an-ti’-qwus), ancient (noun) — ‘Serpentine … of a tint resembling that of the green incrustation on ancient coins.’ From ...

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