dc.contributor.author
Orgel, Csilla
dc.contributor.author
Fassett, Caleb I.
dc.contributor.author
Michael, Gregory
dc.contributor.author
Riedel, Christian
dc.contributor.author
Bogert, Carolyn H. van der
dc.contributor.author
Hiesinger, Harald
dc.date.accessioned
2020-08-17T07:52:35Z
dc.date.available
2020-08-17T07:52:35Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/28058
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-27808
dc.description.abstract
Mercury has one of the best‐preserved impact records in the inner solar system due to the absence of an atmosphere and relatively unmodified ancient surface. However, our knowledge of the early impact record and the nature of the impacting projectiles are far from complete. To get a better understanding of the early impact history, we examined large impact basins (D ≥ 300 km) on Mercury. Here we cataloged 94 basins, 80 of which we classify as certain or probable, 1.7 times more than previously recognized. We re‐evaluate the crater densities of basins using the buffered nonsparseness correction technique, which we successfully applied for the Moon. In contrast with a previous study, we find that basins have a slightly higher N(300) crater density on Mercury than on the Moon, but similar N(500) basin densities. Based on these results and comparison with the Moon, we infer that no more than half of the basin record remains observable and basins older than Borealis have generally been erased from the basin record. Furthermore, we establish the stratigraphic relationships of basins based on N(25) crater frequencies, absolute model ages, and observations of crosscutting relationships. Similarly to our previous study on the Moon, we found no evidence for a change in the size‐frequency distribution of the impacting population; thus, our results are consistent with a single impactor population that bombarded Mercury's surface.
en
dc.format.extent
26 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
impact basins
en
dc.subject
impactor population
en
dc.subject
Late Heavy Bombardment
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie
dc.title
Re‐examination of the population, stratigraphy, and sequence of Mercurian basins: Implications for Mercury's early impact history and comparison with the moon
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1029/2019JE006212
dcterms.bibliographicCitation.journaltitle
Journal of geophysical research
dcterms.bibliographicCitation.url
https://doi.org/10.1029/2019JE006212
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften / Fachrichtung Planetologie und Fernerkundung

refubium.funding
DEAL Wiley
refubium.note.author
Die Publikation wurde von der Freien Universität Berlin finanziert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2169-9097
dcterms.isPartOf.eissn
2169-9100