- Tytuł:
- The interpretative significance of ripple-derived sedimentary structures within an upper Neogene fluvial succession of central Poland
- Autorzy:
-
Maciaszek, Piotr
Chomiak, Lilianna
Wachocki, Robert
Widera, Marek - Powiązania:
- https://bibliotekanauki.pl/articles/94255.pdf
- Data publikacji:
- 2019
- Wydawca:
- Uniwersytet im. Adama Mickiewicza w Poznaniu
- Tematy:
-
sedimentology
depositional structures
ripples
anastomosing river
sedymentologia
struktury deponujące
riplemarki
rzeki anastomozujące - Opis:
- Sedimentary structures discussed in the present study are genetically linked to ripples that consist of pure sand or alternating sand and mud layers. All types of ripple-related structures, such as climbing-ripple cross-lamination and heterolithic bedding, i.e., flaser, wavy and lenticular (nodular), have been identified for the first time in fluvial strata that have been characterised previously as commonly massive. These small-scale bedforms, produced by migrating ripples, have been documented in a fluvial channel of late Neogene age in central Poland. The abundance and co-occurrence of the structures discussed and their spatial distribution provide evidence of their formation under very low-energy conditions, when flow velocity changed markedly, but was often significantly less than 0.5 m/s. Therefore, these ripple-derived sedimentary structures are here recognised as typical of channel fills of an anastomosing river.
- Źródło:
-
Geologos; 2019, 25, 1; 1-13
1426-8981
2080-6574 - Pojawia się w:
- Geologos
- Dostawca treści:
- Biblioteka Nauki
Artykuł