| World |
Rift/Valley |
Length |
Max. width |
Max. depth |
Notes |
| Venus |
Baltis Vallis |
6,800 km (4,200 mi) |
3 km (2 mi) |
|
A lava channel |
| Earth |
Atlantic Ocean |
≈10,000 km (6,000 mi) |
≈6,000 km (4,000 mi) |
7.758 km (4.821 mi) |
Length taken to be that of the Mid-Atlantic Ridge. (The ridge also has a secondary rift valley running its length.) The width is an average taken along the spreading ridges (Georgia–Senegal, Brazil – Bight of Benin, etc.). The greatest depth is the Romanche Trench. (The Puerto Rico Trench is not part of the rift system.) |
| Great Rift Valley |
6,000 km (3,700 mi) |
220 km (140 mi) |
2 km (1 mi) |
Width and depth are those of the Red Sea Rift, discounting continental shelves < 200 m deep. (These may not be the extremes of the whole rift system.) Length of the Red Sea section 2,250 km (1,400 mi). |
| Canadian Arctic Rift System |
4,800 km (3,000 mi) |
|
|
A northwesterly continuation of the Mid-Atlantic Ridge. |
| West Antarctic Rift System |
|
|
|
|
| Midcontinent Rift System |
2,000 km (1,200 mi) |
70 km (40 mi) |
0.27 km (0.17 mi) |
Width & depth Isle Royale – Keweenaw Peninsula; may not be widest point. |
| Grand Canyon |
277 km (200 mi) |
4–18 km (0–10 mi) |
1.857 km (1 mi) |
|
| Colca Canyon |
|
|
4.160 km (2.58 mi) |
|
| Cotahuasi Canyon |
|
|
3.535 km (2.197 mi) |
|
| Moon |
Vallis Snellius |
592 km (368 mi) |
≈ 30 km (20 mi)? |
|
Width assumed to be approx. that of Vallis Rheita |
| Mars |
Valles Marineris |
3,769 km (2,342 mi) |
200 km (100 mi) |
7 km (4 mi) |
|
| Kasei Valles |
1,780 km (1,110 mi) |
200 km (100 mi) |
2–3 km |
|
| Tiu Valles |
1,720 km (1,070 mi) |
|
|
|
| Ares Vallis |
1,700 km (1,100 mi) |
|
|
|
| Vesta |
equatorial channels |
Possibly up to 1,700 km (1,100 mi) |
|
|
Length may be as much as the 1790-km circumference of Vesta |
| Divalia Fossae |
approx. 465 km (290 mi) |
≈ 22 km |
|
Compression fracture from Rheasilvia |
| Saturnalia Fossae |
at least 365 km (230 mi) |
≈ 39 km |
|
365 km visible at one point; rest in northern shadow.
Compression fracture from Veneneia. |
| Europa |
? |
? |
More than 20 km (10 mi) |
|
Moon of Jupiter |
| Tethys |
Ithaca Chasma |
2,000 km (1,000 mi) |
100 km (60 mi) |
3–5 km (2–3 mi) |
Moon of Saturn. Ithaca span approx. 75% the circumference of the Moon. |
| Charon |
Argo Chasma |
700 km (430 mi) |
? |
9 km (6 mi) |
Moon of Pluto. Part of a belt of grabens that span most of the circumference of the moon. Only a section was seen on limb of Charon and so exact length uncertain. Not yet officially named.[1] |
| Caleuche Chasma |
400 km (250 mi) |
? |
13 km (8.1 mi) |
Depth estimated in the range 10–16 km (6.2–9.9 mi).[2] |
| Miranda |
tectonic grabens |
|
20 km |
10-20 km |
Extensive series of grabens and scarps that cover most of the moon. |
| Titania |
Messina Chasma |
1492 km (900 mi) |
50 km (30 mi) |
2-5 km |
Geologically young belt of grabens that cut through craters. Bright, icy material exposed on canyon walls. |
| Pluto |
Sleipnir Fossa |
580 km (360 mi) |
5-10 km |
≈3 km (2 mi) |
One of the six extensional "spider" fractures, cuts through Tartarus Dorsa . Not yet officially named. |
| Lowell Regio canyons |
≈200 km (120 mi) |
75 km (45 mi) |
≈3-4 km |
A series of canyons found very close to the north pole. Not yet officially named. |
|
