About the Subgraywacke, FGDC 654 hatch pattern
Subgraywacke lithology symbol, rows of fine dots and dashes. FGDC geologic map lithology pattern 654, for map and section drawings.
Kind: a repeated motif that does not fill the plane.
The download is one AutoCAD .pat file. Downloads are metered; a Hatchy Pro license lifts the limit.