The Dali and Diana Chasma system consist of deep troughs that extend for and are very distinct features on
Venus. Those chasma connect the
Ovda Regio
Ovda Regio is a Venusian crustal plateau located near the equator in the western highland region of Aphrodite Terra that stretches from 10°N to 15°S and 50°E to 110°E. Known as the largest crustal plateau in Venus, the regio covers an area of ...
and
Thetis Regio
This is a list of geological features on Venus. Venus is the second planet from the Sun. Venus is classified as a terrestrial planet and it is sometimes called Earth's "sister planet" owing to their similar size, gravity, and bulk composition (Venu ...
highlands with the large volcanoes at
Atla Regio
This is a list of geological features on Venus. Venus is the second planet from the Sun. Venus is classified as a terrestrial planet and it is sometimes called Earth's "sister planet" owing to their similar size, gravity, and bulk composition (Venu ...
and thus are considered to be the "Scorpion Tail" of
Aphrodite Terra
Aphrodite Terra is one of the three continental regions on the planet Venus, the others being Ishtar Terra and Lada Terra. It is named for Aphrodite, the Greek equivalent of the goddess Venus, and is found near the equator of the planet. Aphrod ...
. The broad, curving scarp resembles some of
Earth's
subduction zone
Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the ...
s where
crustal plate
Plate tectonics (from the la, label=Late Latin, tectonicus, from the grc, τεκτονικός, lit=pertaining to building) is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large te ...
s are pushed over each other. The radar-bright surface at the highest elevation along the scarp is similar to surfaces in other elevated regions where some metallic mineral such as
pyrite (fool's gold) may occur on the surface.
Catalog Page for PIA00268
/ref>
These features are named for the Georgian
Georgian may refer to:
Common meanings
* Anything related to, or originating from Georgia (country)
** Georgians, an indigenous Caucasian ethnic group
** Georgian language, a Kartvelian language spoken by Georgians
**Georgian scripts, three scrip ...
goddess Dali
Dali or Dalí may refer to:
Chinese history
* Kingdom of Dali (937–1253 AD), centered in modern Yunnan
* Kingdom of Nanzhao or Dali, Kingdom of Dali's predecessor state
* Dali, Emperor Daizong of Tang's third and last regnal period (766–779)
...
and the Roman goddess Diana, respectively.
References
Surface features of Venus
{{crater-stub