Shorty (crater)

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Shorty
Shorty crater location AS17-151-23251.jpg
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
Coordinates 20°13′N30°38′E / 20.22°N 30.63°E / 20.22; 30.63
Diameter 110 m [1]
Depth 14 m
Eponym Astronaut-named feature
Schematic cross section through Shorty crater with vertical scale exaggerated A17 PSR Fig 6-59 Shorty Crater cross section.jpg
Schematic cross section through Shorty crater with vertical scale exaggerated

Shorty is a feature on the Moon, an impact crater in the Taurus–Littrow valley. [2] Astronauts Eugene Cernan and Harrison Schmitt visited it in 1972, on the Apollo 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 a lava fountain. [2] It is about 110 meters (120 yards) in diameter and up to 14 m (15 yd) deep. [4]

Contents

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 Pilot Harrison Schmitt as quoted on the LROC Instrument website [4]

To the east of Shorty are Victory, Camelot, and the Apollo 17 landing site. To the southeast is Brontë. To the southwest are Lara and Nansen.

The crater was named after the character "Shorty" in Richard Brautigan's 1967 novel Trout Fishing in America , as well as to honor the genre of the short story with particular reference to J. D. Salinger. [5]

Samples

The following samples were collected from Shorty crater (Station 4), as listed in Table 7-I of the Apollo 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
74001/74002 AS17-137-20990 (21672948392).jpg Double Drive TubeRegolith breccia [7] -
74115 to 74119 AS17-137-20983 (21496445340).jpg Friable clodsRegolith breccia [8] -
74220 AS17-137-20986 (21497553029).jpg -Soil [9] (the orange soil) Lunar Sample 74220 S73-15084.jpg Moon orange volcanic glass.jpg
74235-Basalt vitrophyreHigh-Ti Mare Basalt [10] Lunar sample 74235 S-73-16013.jpg
74240 AS17-137-20986 (21497553029).jpg -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 AS17-137-20990 (21672948392).jpg -Soil [16] -
74255 AS17-137-20990 (21672948392).jpg Coarse basaltIlmenite Basalt [17] -
74260 AS17-137-20986 (21497553029).jpg -Soil [9] -
74270 AS17-137-20990 (21672948392).jpg -Soil [16] -
74275 AS17-137-20990 (21672948392).jpg Fine basaltHigh-Ti Mare Basalt [18] Lunar sample 74275 S-73-16018.jpg
74285 AS17-137-20990 (21672948392).jpg Medium basaltHigh-Ti Mare Basalt [19] -
74286 AS17-137-20990 (21672948392).jpg Medium basaltHigh-Ti Mare Basalt [20] -
74287 AS17-137-20990 (21672948392).jpg Fine basaltHigh-Ti Mare Basalt [21] -

References

  1. Shorty, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
  2. 1 2 3 APOD - June 24, 2012
  3. APOD - May 23, 2001
  4. 1 2 3 LROC - 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. 1 2 3 74220
  10. 74235
  11. 74245
  12. 74246
  13. 74247
  14. 74248
  15. 74249
  16. 1 2 74250 and 74270
  17. 74255
  18. 74275
  19. 742485
  20. 74286
  21. 74287