About the Tuffaceous rock, FGDC 711 hatch pattern
Tuffaceous rock lithology symbol, Y-shaped marks in staggered rows. FGDC geologic map lithology pattern 711, 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.