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Shorty (crater)

Coordinates:20°13′N30°38′E / 20.22°N 30.63°E /20.22; 30.63
From Wikipedia, the free encyclopedia
Lunar crater
Feature on the moon
Shorty
Location of Shorty crater in Taurus-Littrow Valley. South Massif is at lower left, North Massif is at top center, and Sculptured Hills are at upper right. Scale bar is 5 km
Coordinates20°13′N30°38′E / 20.22°N 30.63°E /20.22; 30.63
Diameter110 m[1]
Depth14 m
EponymAstronaut-named feature
Schematic cross section through Shorty crater with vertical scale exaggerated

Shorty is a feature on theMoon, animpact crater in theTaurus–Littrow valley.[2] AstronautsEugene Cernan andHarrison Schmitt visited it in 1972, on theApollo 17 mission.[2][3] It is the location of the famous "orange soil", which geologists believe to be small bits of rapidly-cooled molten rock ejected in alava fountain.[2] It is about 110 meters (120 yards) in diameter and up to 14 m (15 yd) deep.[4]

Shorty Crater is about 14 m deep. Based on our investigations at the site and later examination of photographs, the impact that formed it penetrated, in order, regolith on the avalanche deposit, the avalanche deposit, regolith on a basalt flow, a basalt flow overlying and protecting the orange and black glass layers, the orange and black glass layers, regolith on a second basalt flow, and, finally, the upper portion of that second flow. Orange and black glass clods and basalt boulders are spread throughout the ejecta blanket surrounding Shorty.

— Apollo 17 Lunar Module PilotHarrison Schmitt as quoted on theLROC Instrument website[4]

To the east of Shorty areVictory,Camelot, and the Apollo 17 landing site. To the southeast isBrontë. To the southwest areLara andNansen.

The crater was named after the character "Shorty" inRichard Brautigan's 1967 novelTrout Fishing in America, as well as to honor the genre of theshort story with particular reference toJ. D. Salinger.[5]

  • Apollo 17 panoramic camera image
    Apollo 17 panoramic camera image
  • Exploring Shorty crater during the Apollo 17 mission to the Moon. The orange soil was found to the right of the rover, at the base of the small hill at the crater rim.
    Exploring Shorty crater during theApollo 17 mission to the Moon. The orange soil was found to the right of the rover, at the base of the small hill at the crater rim.
  • Orange soil found next to Shorty, which turned out to be titanium-rich pyroclastic glass (sample 74220 in the table below)[4]
    Orange soil found next to Shorty, which turned out to be titanium-rich pyroclastic glass (sample 74220 in the table below)[4]
  • Planimetric map of Station 4 including the rim of Shorty
    Planimetric map of Station 4 including the rim of Shorty

Samples

[edit]

The following samples were collected from Shorty crater (Station 4), as listed in Table 7-I of theApollo 17 Preliminary Science Report.[6] The "Rock Type" is from the table, and the "Lithology" is from the Lunar Sample Compendium of the Lunar and Planetary Institute or NASA's Lunar Sample Catalog.

SampleIn Situ PhotoRock TypeLithologyPhoto
74001/74002Double Drive TubeRegolith breccia[7]-
74115 to 74119Friable clodsRegolith breccia[8]-
74220-Soil[9] (the orange soil)
74235-Basalt vitrophyreHigh-Ti Mare Basalt[10]
74240-Soil[9]-
74245-Fine or devitrified basaltAphanitic High-Ti Basalt[11]-
74246-Dark matrix brecciaSoil Breccia[12]-
74247-Fine or devitrified basaltHigh-Ti Basalt[13]-
74248-Fine or devitrified basaltHigh-Ti Basalt[14]-
74249-Fine basaltHigh-Ti Basalt[15]-
74250-Soil[16]-
74255Coarse basaltIlmenite Basalt[17]-
74260-Soil[9]-
74270-Soil[16]-
74275Fine basaltHigh-Ti Mare Basalt[18]
74285Medium basaltHigh-Ti Mare Basalt[19]-
74286Medium basaltHigh-Ti Mare Basalt[20]-
74287Fine basaltHigh-Ti Mare Basalt[21]-

References

[edit]
  1. ^Shorty, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
  2. ^abcAPOD - June 24, 2012
  3. ^APOD - May 23, 2001
  4. ^abcLROC - Just Another Crater?
  5. ^The Valley of Taurus-Littrow, Apollo 17 Lunar Surface Journal, Corrected Transcript and Commentary Copyright 1995 by Eric M. Jones
  6. ^Apollo 17 Preliminary Science Report (NASA Special Publication 330). Scientific and Technical Information Office, National Aeronautics and Space Administration, Washington, D.C. 1973.
  7. ^74001-74002
  8. ^74115-74119
  9. ^abc74220
  10. ^74235
  11. ^74245
  12. ^74246
  13. ^74247
  14. ^74248
  15. ^74249
  16. ^ab74250 and 74270
  17. ^74255
  18. ^74275
  19. ^742485
  20. ^74286
  21. ^74287

External links

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