Strike and dip direction of steeply dipping beds

# Symbols made for GMT by Jose A. Alvarez-Gomez
#
# Geological symbol: Plane Approximately Steep
#
# The symbol reads the strike in the 3rd column in psxy
#
N: 1 a
$1 R
-90 R
0 0 1 y
0.125 -0.125 0.25 -
0.125 0 0.25 -
0.125 0.125 0.25 -