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@article{1546887,
author = {Nehyba, Slavomír and Gilíková, Helena and TomanováandPetrová, Pavla and Otava, Jiří and Skácelová, Zuzana},
article_location = {Warszawa},
article_number = {2},
doi = {http://dx.doi.org/10.7306/gq.1469},
keywords = {peripheral foreland basin; Neogene; forebulge; confined valley; facies analysis; provenance study},
language = {eng},
issn = {1641-7291},
journal = {Geological Quarterly},
title = {Evolution of a sedimentary infill of a palaeovalley at a distal margin of the peripheral foreland basin},
url = {https://gq.pgi.gov.pl/article/view/26076},
volume = {63},
year = {2019}
}
TY - JOUR
ID - 1546887
AU - Nehyba, Slavomír - Gilíková, Helena - Tomanová-Petrová, Pavla - Otava, Jiří - Skácelová, Zuzana
PY - 2019
TI - Evolution of a sedimentary infill of a palaeovalley at a distal margin of the peripheral foreland basin
JF - Geological Quarterly
VL - 63
IS - 2
SP - 319-344
EP - 319-344
PB - Polish Geological Institute
SN - 16417291
KW - peripheral foreland basin
KW - Neogene
KW - forebulge
KW - confined valley
KW - facies analysis
KW - provenance study
UR - https://gq.pgi.gov.pl/article/view/26076
L2 - https://gq.pgi.gov.pl/article/view/26076
N2 - The entrenched Odra palaeovalley, cut into the bedrock of the distal margin (forebulge basal unconformity) of the Moravian Carpathian Foredeep (peripheral foreland basin) is filled with an almost 300 m thick pile of Miocene deposits. The directon of the valley (NW SE to NNW SSE) has been controlled by faults subparallel with the system of "sudetic faults". The sedimentary succession consists of 5 facies associations/depositional environments, which are interpreted (from bottom to top, i.e. from the oldest to the youngest) as: 1 - colluvial deposits to deposits of alluvial fan, 2 deposits of alluvial fan, 3 fan-delta deposits, 4 shallow water delta to nearshore deposits and 5 - open marine deposits. This fining-up and deepening-up succession reveals the following: the formation of the new flexural shape of the basin; deep erosion connected with uplift and tilting of the forebulge and reactivation of the NW-SE trending basement faults; the Early/Middle Miocene sea level fall; alluvial deposition mostly driven by tectonics and morphology; forebulge flexural retreat; Middle-Miocene sea level rise; back-stepping of valley infill; marine invasion during the Early Badenian with shift of the coastline further landward of the pallaeovalley. Tectonics related to contemporary thrusting processes in the Western Carpathians are assumed to be the dominating factor of the studied deposition at the expense of eustatic sea level changes. Provenance studies have proven that the pre-Neogene basement (i.e. the Early Carboniferous clastic "Culmian facies" of the Moravian-Silesian Paleozoic) represents an important source for the conglomerates and sands, which volumetrically dominate in the palaeovalley infill. However, they also showed, that the deposits of the earlier Carpathian Foredeep Basin sedimentary stage (Karpatian in age?) covered the area under study and were eroded and resedimented into the palaeovalley infill.
ER -
NEHYBA, Slavomír, Helena GILÍKOVÁ, Pavla TOMANOVÁ-PETROVÁ, Jiří OTAVA a Zuzana SKÁCELOVÁ. Evolution of a sedimentary infill of a palaeovalley at a distal margin of the peripheral foreland basin. \textit{Geological Quarterly}. Warszawa: Polish Geological Institute, 2019, roč.~63, č.~2, s.~319-344. ISSN~1641-7291. Dostupné z: https://dx.doi.org/10.7306/gq.1469.
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