Geological mapping of the Ac-10 Rongo Quadrangle of Ceres

T. Platz, A. Nathues, H. G. Sizemore, D. A. Crown, M. Hoffmann, M. Schäfer, N. Schmedemann, T. Kneissl, A. Neesemann, S. C. Mest, D. L. Buczkowski, O. Ruesch, K. H.G. Hughson, A. Naß, David Williams, F. Preusker

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The Dawn spacecraft arrived at dwarf planet Ceres in spring 2015 and imaged its surface from four successively lower polar orbits at ground sampling dimensions between ∼1.3[U+202F]km/px and ∼35[U+202F]m/px. To understand the geological history of Ceres a mapping campaign was initiated to produce a set of 15 quadrangle-based geological maps using the highest-resolution Framing Camera imagery. Here we present the geological map of the Ac-10 Rongo Quadrangle, which is located at the equator encompassing the region from 22°N to 22°S and 288° to 360°E. The total relief within the quadrangle is 11.1[U+202F]km with altitudes ranging from about -7.3[U+202F]km to +3.8[U+202F]km. We identified nine geological units based on surface morphology and surface textural characteristics. The dominant and most widespread unit is the cratered terrain (crt) representing ancient reworked crustal material. Its consistent formation age across the quadrangle is 1.8[U+202F]Ga. Two edifices (unit th), Ahuna Mons and an unnamed tholus within Begbalel Crater, are interpreted to be of (cryo)volcanic origin. The southwest portion of the quadrangle is dominated by ejecta material (Ye) emplaced during the formation of the 260-km diameter Yalode impact basin at about 580 Ma. Rayed crater ejecta material (cr) is dominant in the eastern part of the quadrangle but also occurs in isolated patches up to a distance of 455[U+202F]km from the 34[U+202F]km diameter source crater Haulani. The remaining five geological units also represent impact crater materials: degraded rim (crdeg), bright crater (cb), hummocky floor (cfh), talus (ta), and crater (c) materials.Widespread Yalode and Haulani ejecta materials can potentially be utilised as stratigraphic markers. Therefore, it is essential to consistently map their full areal extent and to date their formations using impact crater statistics.

Original languageEnglish (US)
JournalIcarus
DOIs
StateAccepted/In press - 2017

Fingerprint

geological mapping
craters
crater
ejecta
dwarf planets
framing cameras
polar orbits
talus
equators
rims
imagery
markers
material
volcanology
spacecraft
relief
planet
sampling
statistics
histories

Keywords

  • Asteroid Ceres
  • Asteroid surfaces
  • Cratering
  • Image processing
  • Impact processes
  • Volcanism

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Platz, T., Nathues, A., Sizemore, H. G., Crown, D. A., Hoffmann, M., Schäfer, M., ... Preusker, F. (Accepted/In press). Geological mapping of the Ac-10 Rongo Quadrangle of Ceres. Icarus. https://doi.org/10.1016/j.icarus.2017.08.001

Geological mapping of the Ac-10 Rongo Quadrangle of Ceres. / Platz, T.; Nathues, A.; Sizemore, H. G.; Crown, D. A.; Hoffmann, M.; Schäfer, M.; Schmedemann, N.; Kneissl, T.; Neesemann, A.; Mest, S. C.; Buczkowski, D. L.; Ruesch, O.; Hughson, K. H.G.; Naß, A.; Williams, David; Preusker, F.

In: Icarus, 2017.

Research output: Contribution to journalArticle

Platz, T, Nathues, A, Sizemore, HG, Crown, DA, Hoffmann, M, Schäfer, M, Schmedemann, N, Kneissl, T, Neesemann, A, Mest, SC, Buczkowski, DL, Ruesch, O, Hughson, KHG, Naß, A, Williams, D & Preusker, F 2017, 'Geological mapping of the Ac-10 Rongo Quadrangle of Ceres', Icarus. https://doi.org/10.1016/j.icarus.2017.08.001
Platz T, Nathues A, Sizemore HG, Crown DA, Hoffmann M, Schäfer M et al. Geological mapping of the Ac-10 Rongo Quadrangle of Ceres. Icarus. 2017. https://doi.org/10.1016/j.icarus.2017.08.001
Platz, T. ; Nathues, A. ; Sizemore, H. G. ; Crown, D. A. ; Hoffmann, M. ; Schäfer, M. ; Schmedemann, N. ; Kneissl, T. ; Neesemann, A. ; Mest, S. C. ; Buczkowski, D. L. ; Ruesch, O. ; Hughson, K. H.G. ; Naß, A. ; Williams, David ; Preusker, F. / Geological mapping of the Ac-10 Rongo Quadrangle of Ceres. In: Icarus. 2017.
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