Venus: Surface and Interior 165
FIGURE 15 Radar image of Hecate Chasma, approximately 7000×3000 km, centered at 16◦N,
240 ◦E. Hecate Chasma is a huge tectonic feature, stretching from Atla Regio to Beta Regio. The
rift is very bright in radar and has a wispy appearance. The rift comprises numerous branches at a
range of orientations, with coronae present throughout the region, both on and off the rift.
FIGURE 16 Radar image of
Heng-o and Beltis Coronae (B).
The topographic rim of Heng-o,
which corresponds approximately
to the fracture annulus deforms the
local regional plains. To the west
lie extensive flow fields interpreted
to originate from Beltis Corona (to
the northwest of Heng-o) and the
western annulus of Heng-o. Three
volcanic centers of different ages
lie within the annulus of Heng-o.
Black lines and boxes are gaps in
the data. Curved black edges result
from the sinusoidal projection.