Spectral properties of Titan's impact craters imply chemical weathering of its surface

We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blanket...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:	Geophysical research letters. - 1984. - 42(2015), 10 vom: 28. Mai, Seite 3746-3754
1. Verfasser:	Neish, C D (VerfasserIn)
Weitere Verfasser:	Barnes, J W, Sotin, C, MacKenzie, S, Soderblom, J M, Le Mouélic, S, Kirk, R L, Stiles, B W, Malaska, M J, Le Gall, A, Brown, R H, Baines, K H, Buratti, B, Clark, R N, Nicholson, P D
Format:	Aufsatz
Sprache:	English
Veröffentlicht:	2015
Zugriff auf das übergeordnete Werk:	Geophysical research letters
Schlagworte:	Journal Article Titan erosion and weathering impact cratering

Beschreibung
Zusammenfassung:	We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blankets of the freshest craters on Titan. The progression is consistent with the chemical weathering of Titan's surface. We propose an evolutionary sequence such that Titan's craters expose an intimate mixture of water ice and organic materials, and chemical weathering by methane rainfall removes the soluble organic materials, leaving the insoluble organics and water ice behind. These observations support the idea that fluvial processes are active in Titan's equatorial regions
Beschreibung:	Date Revised 09.01.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	0094-8276