About the Interbedded limestone and shale (1st option), FGDC 677 hatch pattern
Interbedded limestone and shale (1st option) lithology symbol, brick courses and dashes. FGDC geologic map lithology pattern 677, 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.