Grain-size variability of point-bar deposits from a fine-grained dryland river terminus, Southern Altiplano, Bolivia

Grain-size variability of point-bar deposits from a fine-grained dryland river terminus, Southern Altiplano, Bolivia

Point-bar deposits exhibiting fining-upward grain-size trends are widely documented from both modern rivers and ancient preserved successions. However, in some mud-dominated sedimentary systems this common pattern may not occur; rather, alternative coarsening-upward trends can develop. We investigat...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Sedimentary geology 2020-06, Vol.403, p.105663, Article 105663
Hauptverfasser: Li, Jiaguang, Vandenberghe, Jef, Mountney, Nigel P., Luthi, Stefan M.
Format: Artikel
Sprache:eng
Schlagworte:
Coarsening-upward succession
Fine-grained
Meandering river
Point bar
River terminus
Semi-arid endorheic basin
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Point-bar deposits exhibiting fining-upward grain-size trends are widely documented from both modern rivers and ancient preserved successions. However, in some mud-dominated sedimentary systems this common pattern may not occur; rather, alternative coarsening-upward trends can develop. We investigated point-bar deposits in the mud-dominated river terminus (median value (D50) 
ISSN:0037-0738
1879-0968
DOI:10.1016/j.sedgeo.2020.105663