impact crater

(redirected from Impact basin)

impact crater

[′im‚pakt ‚krād·ər]
(geology)
A crater formed on a planetary surface by the impact of a projectile.
References in periodicals archive ?
A new impact basin will replace the existing headwall for the principal spillway outlet for erosion control.
One of the larger population of Martian sand dunes exists in the planet's southern hemisphere, near the Hellas impact basin - one of Mars' largest and most recognizable impact basin.
Many suspect it's an ancient impact basin that, over time, has been partly filled by a thick layer of frozen nitrogen, methane, and carbon monoxide.
Scientists made the discovery as they were trying to figure out why a 1,000km wide impact basin known as Sputnik Planitia, which contains the curious heart-shaped region, was located in its present position near Pluto's equator.
In the foreground is a region of rough, heavily cratered terrain with a large, ancient two-ring impact basin at the bottom center of the image.
One hypothesis suggested that it was formed by a massive impact, in which case it would have been the largest impact basin on the moon.
Ten months ago the rover landed inside a giant impact basin near the planet's equator, a site selected because of the 3-mile-high (5-km-high) mound of layered rock rising from the crater floor.
The rover's precise location had yet to be determined, but NASA said it came to rest in its planned landing zone near the foot of a tall mountain rising from the floor of a vast impact basin called Gale Crater, in Mars' southern hemisphere.
The Hydro Impact Basin is 115 feet long, 90 feet wide and 20 feet deep (35 x 27 x 6 meters).
Crater floors are tilted in some areas, and the floor of the Caloris impact basin rises above the rim in some places.
The mascon gravity anomaly in Figure 6 consists of the well-defined relatively positive 26 mGal anomaly overlying the inferred impact basin.
While Mars Express fires its main engine to go into Martian orbit, Beagle 2 will head for a landing site within a large impact basin near the planet's equator.