Geology Reference
In-Depth Information
Fig. 10.9.
Correct interpretation of the map in Fig. 10.8.
a
Structure contours on the base of the bed,
based on knowledge that the fold axis trends north-south with zero plunge (after Weijermars 1997).
Long dashes
indicate contours below ground,
short dashes
indicate contours projected above ground.
b
3-D view of fold. Trace of the upper boundary is shown on the topography. The lower boundary is
rendered as an outcrop trace and as a 3-D mesh
Fig. 10.10.
Structure contour maps based on the four labeled points. Dips are known at the 3 points
surrounded by
polygons
.
a
Kriged contouring based on elevations.
b
Triangulation contouring based
on elevations.
c
Dip-domain map based on contour direction and spacing from 3 known bedding atti-
tudes.
d
3-D oblique view NE of
c
