Here, the prospective sandstone was too silty and fine grained; too low
permiability for the hematite concretions to develop into cones.
Instead they have
formed in cow pattie shapes. Notice the three here, an 18 inch on
the left, 12 inch in
the center, and a 6 inch concretion on the right. Looka t the
rightmost 6 inch pattie on
its pedestal forming a miniature hoodoo. The desert scrub on this
south facing exposure
is in bloom with fragrant purple blossoms. See below what happens
if their is some
vertical permiability but not enough for cone formation.
In this view you can see several four to six inch wide columns of
in the closer rock. In the background are six to eight inch
diameter stacked concretions.