Juventae Chasma

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Juventae Chasma
Juventae Chasma THEMIS mosaic.jpg
Juventae Chasma in mosaic of THEMIS infrared images. Maja Valles extends north from the top of the image. Part of Baetis Chaos is visible at the top, with a smaller chaos region to its right.
Coordinates 3°30′S 61°24′W / 3.5°S 61.4°W / -3.5; -61.4Coordinates: 3°30′S 61°24′W / 3.5°S 61.4°W / -3.5; -61.4
Length 320.0

Juventae Chasma is an enormous box canyon (250 km × 100 km) on Mars which opens to the north and forms the outflow channel Maja Valles.[1] Juventae Chasma is located north of Valles Marineris in the Coprates quadrangle and cuts more than 5 km into the plains of Lunae Planum.

Name[edit]

Juventae was named by Schiaparelli after Juventae Fons, the fountain of youth.[2]

Observations[edit]

The floor of Juventae Chasma is partly covered by sand dunes. There is also a 2.5 km high mountain inside Juventae, 59 km long and 23 km wide, that was confirmed by Mars Express to be composed of sulfate deposits.[3] MRO discovered sulfates, hydrated sulfates, and iron oxides in Juventae Chasma.[4] Juventae Chasma has four bright mounds or light-toned interior layered deposits (IlD's), as they are often called. Researchers have found that monohydrated sulfates were first deposited on the floor. And then polyhydrated sulfates were laid down. Kieserite, a magnesium sulfate, was also found in Juventae Chasma.[5] Studies from satellites orbiting Mars have found channels on the eastern, western, and southern walls of Juventae Chasma. They seem to have different origins. Some may have started from melting snow, others from groundwater sapping, and still others from precipitation. Inverted channels are also present.[6][7]

References[edit]

  1. ^ PIA03818: Floor of Juventae Chasma
  2. ^ Blunck, J. 1982. Mars and its Satellites. Exposition Press. Smithtown, N.Y.
  3. ^ Sulphate deposits in Juventae Chasma
  4. ^ Murchie, S. et al. 2009. A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research: 114.
  5. ^ Noel, A., J. Bishop, M. Al-Samir, C. Gross, J. Flahaut, P. McGuire, C. Weitz, F. Seelos, S. Murchie. 2015. Mineralogy, morphology and stratigraphy of the light-toned interior layered deposits at Juventae Chasma. Icarus: 251, 315–331
  6. ^ Singh et al. (2016) Lunar Planet. Sci. XLIV Abstract#1766.
  7. ^ Singh, P., et al. 2017. The Diverse Channel Networks of Juventae Chasma, Mars. Lunar and Planetary Science XLVIII (2017). 2603.pdf.

See also[edit]