High-energy, microtidal nearshore deposits and their provenance
(Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian
Foredeep, Lower Austria)

J 2022

High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria)

NEHYBA, Slavomír a Reinhard ROETZEL

Základní údaje

Originální název

High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria)

Autoři

NEHYBA, Slavomír a Reinhard ROETZEL

Vydání

Geological Quarterly, Warzsawa, Polish Geological Institute, 2022, 1641-7291

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.000

Kód RIV

RIV/00216224:14310/22:00127662

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.7306/gq.1665

UT WoS

000921240500004

EID Scopus

2-s2.0-85146866263

Klíčová slova anglicky

Alpine; Carpathian Foredeep; Lower Miocene; provenance analysis; fair-weather vs. storm processes; rocky shoreline; coastal morphology

Štítky

14315010, rivok

Změněno: 2. 3. 2023 09:44, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

During the Early Miocene (Early Burdigalian/Eggenburgian) marine transgression at the southeastern margin of the Bohemian Massif, gradual flooding occurred along a rocky coast on granitic bedrock of the Thaya Batholith under high-energy, wave-dominated, microtidal and mixed fair-weather and storm conditions. Deposits of the Burgschleinitz Formation overlie a basal unconformity above a subaerial weathered basement surface (transgressive erosional surface) and are interpreted as a transgressive systems tract. The deposits can be divided into four facies associations/depositional environments, i.e., upper-shoreface, foreshore, gravelly beach and backshore/lagoon. Two stages of transgression and successive overtopping of the basement, with different coastal physiographies, were documented. During the initial stage of transgression a barrier island system developed with relatively fine-grained deposits, reflecting the flooding of the distant parts of the Thaya Batholith with a relative flat basement morphology. The subsequent continuation of the transgression led to the flooding of the more proximal parts of the Thaya Batholith with a steeper relief and formation of a rocky shoreline with deposition of gravelly sediments along palaeo-sea cliffs or wave-cut platforms. While gravel clasts of the deposits investigated originate directly from the underlying granites of the Thaya Batholith, provenance studies show that metamorphic rocks of the Moravian Superunit in the hinterland were the main source of sands. This distant source material was probably delivered mainly by small creeks and alluvial fans to the nearshore. Significant differences in heavy mineral composition of the same formation in the wider vicinity indicate primarily local sources and rapid deposition with subordinate longshore transport, which may reflect a complex coastal palaeogeography. The Lower Miocene deposits of the Burgschleinitz Formation investigated are a rare example of ancient rocky shore deposits, which generally have low preservation potential in the geological record.

Citovat

NEHYBA, Slavomír a Reinhard ROETZEL. High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria). Geological Quarterly. Warzsawa: Polish Geological Institute, 2022, roč. 66, č. 4, s. 1-29. ISSN 1641-7291. Dostupné z: https://doi.org/10.7306/gq.1665.

@article{2243430,
   author = {Nehyba, Slavomír and Roetzel, Reinhard},
   article_location = {Warzsawa},
   article_number = {4},
   doi = {https://doi.org/10.7306/gq.1665},
   keywords = {Alpine; Carpathian Foredeep; Lower Miocene; provenance analysis; fair-weather vs. storm processes; rocky shoreline; coastal morphology},
   language = {eng},
   issn = {1641-7291},
   journal = {Geological Quarterly},
   title = {High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria)},
   url = {https://gq.pgi.gov.pl/article/view/33396},
   volume = {66},
   year = {2022}
}

TY  - JOUR
ID  - 2243430
AU  - Nehyba, Slavomír - Roetzel, Reinhard
PY  - 2022
TI  - High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria)
JF  - Geological Quarterly
VL  - 66
IS  - 4
SP  - 1-29
EP  - 1-29
PB  - Polish Geological Institute
SN  - 16417291
KW  - Alpine
KW  - Carpathian Foredeep
KW  - Lower Miocene
KW  - provenance analysis
KW  - fair-weather vs. storm processes
KW  - rocky shoreline
KW  - coastal morphology
UR  - https://gq.pgi.gov.pl/article/view/33396
N2  - During the Early Miocene (Early Burdigalian/Eggenburgian) marine transgression at the southeastern margin of the Bohemian Massif, gradual flooding occurred along a rocky coast on granitic bedrock of the Thaya Batholith under high-energy, wave-dominated, microtidal and mixed fair-weather and storm conditions. Deposits of the Burgschleinitz Formation overlie a basal unconformity above a subaerial weathered basement surface (transgressive erosional surface) and are interpreted as a transgressive systems tract. The deposits can be divided into four facies associations/depositional environments, i.e., upper-shoreface, foreshore, gravelly beach and backshore/lagoon. Two stages of transgression and successive overtopping of the basement, with different coastal physiographies, were documented. During the initial stage of transgression a barrier island system developed with relatively fine-grained deposits, reflecting the flooding of the distant parts of the Thaya Batholith with a relative flat basement morphology. The subsequent continuation of the transgression led to the flooding of the more proximal parts of the Thaya Batholith with a steeper relief and formation of a rocky shoreline with deposition of gravelly sediments along palaeo-sea cliffs or wave-cut platforms. While gravel clasts of the deposits investigated originate directly from the underlying granites of the Thaya Batholith, provenance studies show that metamorphic rocks of the Moravian Superunit in the hinterland were the main source of sands. This distant source material was probably delivered mainly by small creeks and alluvial fans to the nearshore. Significant differences in heavy mineral composition of the same formation in the wider vicinity indicate primarily local sources and rapid deposition with subordinate longshore transport, which may reflect a complex coastal palaeogeography. The Lower Miocene deposits of the Burgschleinitz Formation investigated are a rare example of ancient rocky shore deposits, which generally have low preservation potential in the geological record.
ER  -

NEHYBA, Slavomír a Reinhard ROETZEL. High-energy, microtidal nearshore deposits and their provenance (Lower Miocene, Burdigalian/Eggenburgian, Alpine-Carpathian Foredeep, Lower Austria). \textit{Geological Quarterly}. Warzsawa: Polish Geological Institute, 2022, roč.~66, č.~4, s.~1-29. ISSN~1641-7291. Dostupné z: https://doi.org/10.7306/gq.1665.

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