La base de ressources documentaires de l'IRD
Publications des scientifiques de l'IRD
Lagain A., Bouley S., Baratoux David, Costard F., Wieczorek M. (2020). Impact cratering rate consistency test from ages of layered ejecta on Mars. Planetary and Space Science, 180, art. 104755 [11 p.]. ISSN 0032-0633
| Titre | Impact cratering rate consistency test from ages of layered ejecta on Mars |
| Année de publication | 2020 |
| Type de document | Article référencé dans le Web of Science WOS:000510110900002 |
| Auteurs | Lagain A., Bouley S., Baratoux David, Costard F., Wieczorek M. |
| Source | Planetary and Space Science, 2020, 180, p. art. 104755 [11 p.]. p. art. 104755 [11 p.] ISSN 0032-0633 |
| Résumé | Ages of geological units of planetary bodies are determined from impact crater counts on their surface. These ages are model-dependent, and several models largely used in the community assume a constant production function and a constant cratering rate over the last 3 Ga. We have mapped the population of small impact craters (>200 m in diameter) formed over a population of large impact craters (>5 km in diameter) with layered ejecta on Acidalia Planitia, Mars. We have deduced the age of each large impact crater under the assumption of a constant impact rate and constant production function. The impact rate inferred from this set of ages is, however, not constant and show a significant increasing during the last similar to 1 Ga compared to chronology models commonly used. We interpret this inconsistency as an evidence for temporal variations in the size-frequency distribution (SFD) of impactors in the main belt, consistent with recent studies argued for a late increasing of the large impactor flux on Earth and the Moon. |
| Plan de classement | Sciences de la Terre : généralités [060] ; Sciences fondamentales / Techniques d'analyse et de recherche [020] |
| Localisation | Fonds IRD [F B010077879] |
| Identifiant IRD | fdi:010077879 |
| Lien permanent | http://www.documentation.ird.fr/hor/fdi:010077879 |
Export des données
Disponibilité des documents
fichier PDF téléchargeable
lien chez l'éditeur
en accès réservé
en libre accès sur HAL
Accès aux documents originaux :
- IRD France Nord
Centre de documentation
32 avenue Henri Varagnat
F 93143 Bondy cedex - documentation.bondy@ird.fr
|
Accès direct Espace intranet IST (accès réservé) |
Services Horizon |
Centres de documentation |