Table 2.5 (continued)
Region
Rough.
index
Characteristics and area [km
2
]
Sub-region f
Smooth sub-region with a small pit
and some scarps. Intermediate in
character.
Sub-region g
Seth like. Adjoining Atum.
Sub-region h
Adjoining Apis. Rock-like surface
with a slight depression. Topographically separated from the rest.
Sub-region i
Large-scale rough terrain. Dust
covered but with exposed layering
in many places. Transitions to the
Imhotep region at a boundary
between very rough terrain and
that of intermediate character.
Sub-region j
Borders Aten and is also a depression but not as deep as Aten. There
is a ridge dividing two sections of
the sub-region. The bases of the
depression on both sides of the
ridge are smooth.
Aten
(An)
16.75
Depression with little or no sedimentary deposits. Interior mainly
dominated by talus resulting from
progressive rim failure.
1.12758
Babi (Bb) 12.60
Covered with a deposit producing a
smooth surface. Occasional exposures of more consolidated but
brittle material below. Topographically separated from Ash.
1.45666
Sub-region a
Topographic high with cliffs on
three sides. Uppermost surface is
dust covered.
Sub-region b
Topographically low and strongly
sloping. Bounded by Khepry, Seth
and Ash. Some spur-like structures
possibly originating from
sub-region a are evident.
Geb
(Gb)
12.27
Consolidated material
1.02767
Sub-region a
Large numbers of depressions on a
steep slope.
Sub-region b
The neck side of Geb. Covered in
boulders.
Sub-region c
Smoother fractured surface similar
to that seen in Anhur and Bes.
Khepry
(Kp)
15.71
Consolidated and fractured material
but rather smooth with ponded
deposits.
1.63087
(continued)
2.9 Surface Processes
89