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Wyszukujesz frazę "Gilbert-type delta" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Lacustrine deltas and subaqueous fans: almost the same, but different – a review
Autorzy:
Gruszka, Beata
Zieliński, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1841622.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
fan delta
Gilbert-type delta
ice-contact subaqueous fan
depositional mechanisms
sedimentology
delta
mechanizmy depozycji
sedymentologia
Opis:
Although deltas and subaqueous fans are both formed in the same near-shore zones of basins, the hydraulic conditions for their formation, development and sedimentary records are different. The present review discusses the results of previously published studies of fan deltas (Gilbert-type deltas) and subaqueous fans of lacustrine and glaciolacustrine environments. The depositional mechanisms of deltas and subaqueous fans, textural and structural features of the lithofacies associations and their typical lithofacies are presented. The characteristics of subaqueous fans, which are still relatively poorly understood and are often overlooked in sedimentological interpretations of lacustrine sedimentary successions, receive particular attention. The palaeoenvironmental and lithological differences between deltas and subaqueous fans are highlighted.
Źródło:
Geologos; 2021, 27, 1; 43-55
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedimentary evidence for an ice-sheet dammed lake in a mountain valley of the Eastern Sudetes, Czechia
Autorzy:
Hanáček, M.
Nývlt, D.
Skácelová, Z.
Nehyba, S.
Procházková, B.
Engel, Z.
Powiązania:
https://bibliotekanauki.pl/articles/138704.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
terminoglacial glaciofluvial Gilbert-type delta
foreset facies
preglacial morphology
ice-dammed lake
Pleistocene
Central Europe
Písečná Site
delta typu Gilberta
facje
morfologia preglacjalna
jezioro lodowcowe
jezioro proglacjalne
pleistocen
Europa Centralna
Opis:
An accumulation of glacial sediments is located near Písečná village in the depression between the Sokol Ridge and Zlaté Hory Highlands NNE of Jeseník town (Eastern Sudetes). The accumulation lies at the lateral side of the mountain valley of the Bělá River and fills a preglacial palaeovalley of this river. Research combining facies analysis of outcrops, ground penetrating radar survey, interpretation drilling survey, and modelling of the preglacial relief was undertaken at the site. According to the results obtained, the upper part of the sedimentary accumulation represents a coarse-grained terminoglacial glaciofluvial delta of the Gilbert type. The development of the accumulation has dominantly been driven by the preglacial morphology. Facies typical for foresets of coarse-grained deltas represented mainly by high-density flows, cohesionless debris flows, debris falls and less common low-density flows were found in the outcrops. The delta near Písečná prograded into a lake dammed by the ice-sheet front in the north. The lake was bounded by the slopes of Sokol Ridge, Zlaté Hory Highlands and Góry Parkowe on other sides. The lake level reached an altitude of up to 430 m a.s.l., as the coarse-grained delta plain base lies at this level.
Źródło:
Acta Geologica Polonica; 2018, 68, 1; 107-134
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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