About the Dolomitic siltstone, FGDC 618 hatch pattern
Dolomitic siltstone lithology symbol, rows of fine dots and dashes with slanted ticks. FGDC geologic map lithology pattern 618, 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.