Coastal cliffs, rock-slope failures and Late Quaternary transgressions of the Black Sea along southern Crimea

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901WZ8" target="_blank" >RIV/61988987:17310/18:A1901WZ8 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0277379117304961" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0277379117304961</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.quascirev.2017.12.004" target="_blank" >10.1016/j.quascirev.2017.12.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coastal cliffs, rock-slope failures and Late Quaternary transgressions of the Black Sea along southern Crimea

Popis výsledku v původním jazyce

Geomorphic evidence suggests that high (>100 m) limestone cliffs flanking the southern slopes of the Crimean Mountains are scarps of rockslides nested within larger deep-seated gravitational slope deformations (DSGSDs). Such pervasive slope failures originated due to lateral spreading of intensively faulted Late Jurassic carbonate blocks moving atop weak/plastic Late Triassic flysch and tuff layers. By introducing a dating strategy relying on the combination of the uranium-thorium dating (U-Th) of exposed calcareous speleothems covering the landslide scarps with the 36Cl exposure dating of rock walls, we are able to approximate the time interval between the origin of incipient crevices and the final collapse of limestone blocks that exposed the cliff faces. For the three representative large-scale rockslides between the towns of Foros and Yalta, the initiation of the DSGSDs as evidenced by the widening of crevices and the onset of speleothem accumulation was >300 ka BP, but the recent cliff morphology along the coast is the result of Late Pleistocene/Holocene failures spanning ~20e0.5 ka BP. The exposures of rockslide scarps occurred mostly at ~20-15, ~8, ~5-4 and ~2-0.5 ka, which substantially coincide with the last major Black Sea transgressions and/or more humid Holocene intervals.

Název v anglickém jazyce

Coastal cliffs, rock-slope failures and Late Quaternary transgressions of the Black Sea along southern Crimea

Popis výsledku anglicky

Geomorphic evidence suggests that high (>100 m) limestone cliffs flanking the southern slopes of the Crimean Mountains are scarps of rockslides nested within larger deep-seated gravitational slope deformations (DSGSDs). Such pervasive slope failures originated due to lateral spreading of intensively faulted Late Jurassic carbonate blocks moving atop weak/plastic Late Triassic flysch and tuff layers. By introducing a dating strategy relying on the combination of the uranium-thorium dating (U-Th) of exposed calcareous speleothems covering the landslide scarps with the 36Cl exposure dating of rock walls, we are able to approximate the time interval between the origin of incipient crevices and the final collapse of limestone blocks that exposed the cliff faces. For the three representative large-scale rockslides between the towns of Foros and Yalta, the initiation of the DSGSDs as evidenced by the widening of crevices and the onset of speleothem accumulation was >300 ka BP, but the recent cliff morphology along the coast is the result of Late Pleistocene/Holocene failures spanning ~20e0.5 ka BP. The exposures of rockslide scarps occurred mostly at ~20-15, ~8, ~5-4 and ~2-0.5 ka, which substantially coincide with the last major Black Sea transgressions and/or more humid Holocene intervals.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10507 - Volcanology

Projekt

<a href="/cs/project/GAP209%2F12%2F0317" target="_blank" >GAP209/12/0317: Pozdně kvartérní vývoj komplexních gravitačních svahových deformací jižních svahů Krymských hor (Ukrajina)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

QUATERNARY SCI REV

ISSN

0277-3791

e-ISSN

—

Svazek periodika

1 February

Číslo periodika v rámci svazku

181

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

17

Strana od-do

76-92

Kód UT WoS článku

000424178200006

EID výsledku v databázi Scopus

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