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  Geological mapping of the Ac-10 Rongo Quadrangle of Ceres

Platz, T., Nathues, A., Sizemore, H., Crown, D., Hoffmann, M., Schäfer, M., et al. (2018). Geological mapping of the Ac-10 Rongo Quadrangle of Ceres. Icarus, 316, 140-153. doi:10.1016/j.icarus.2017.08.001.

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 Creators:
Platz, Thomas1, Author              
Nathues, Andreas1, Author              
Sizemore, H.G., Author
Crown, D.A., Author
Hoffmann, Martin1, Author              
Schäfer, Michael1, Author              
Schmedemann, N., Author
Kneissl, T., Author
Neesemann, A., Author
Mest, S.C., Author
Buczkowski, D.L., Author
Ruesch, O., Author
Hughson, K.H.G., Author
Naß, A., Author
Williams, D.A., Author
Preusker, F., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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Free keywords: Impact processes Asteroid Ceres Asteroid surfaces Cratering Image processing Volcanism
 MPIS_PROJECTS: DAWN
 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 km/px and ∼35 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 km with altitudes ranging from about −7.3 km to +3.8 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 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 km from the 34 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.

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Language(s): eng - English
 Dates: 2018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.icarus.2017.08.001
 Degree: -

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Title: Icarus
Source Genre: Journal
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Affiliations:
Publ. Info: Amsterdam : Academic Press
Pages: - Volume / Issue: 316 Sequence Number: - Start / End Page: 140 - 153 Identifier: ISSN: 0019-1035
CoNE: https://pure.mpg.de/cone/journals/resource/954922645023