Rare, slow but impressive: > 43 ka of rockslide in river canyon incising crystalline rocks of the eastern Bohemian Massif

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F23%3A00574418" target="_blank" >RIV/68145535:_____/23:00574418 - isvavai.cz</a>

Alternative codes found

RIV/61988987:17310/23:A2402KB3 RIV/61989100:27350/23:10252435

Result on the web

<a href="https://link.springer.com/article/10.1007/s10346-023-02062-2" target="_blank" >https://link.springer.com/article/10.1007/s10346-023-02062-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10346-023-02062-2" target="_blank" >10.1007/s10346-023-02062-2</a>

Result language

angličtina

Original language name

Rare, slow but impressive: > 43 ka of rockslide in river canyon incising crystalline rocks of the eastern Bohemian Massif

Original language description

Despite significant progress in understanding the stability of rock slopes, little is known about the time scales of the evolution of slow-moving rockslides. The Ledové sluje rockslide in the Thaya River canyon is a unique and infrequent slope failure developed in crystalline rocks of the Variscan orogen in Central Europe. Fresh topography with trenches, rock walls, slided blocks, scree slopes and crevice-type caves has attracted generations of geologists for more than a century, but questions of mechanism and age of the rockslide have remained unresolved. To address this question, we combined geomorphological research with detailed analysis of the geological structure, electrical resistivity profiling and terrestrial cosmogenic nuclide dating (TCN). Our data show that failure developed above the river undercut bank along a planar sliding surface predisposed by NW-oriented gently dipping metamorphic foliation intersected by steep fractures and faults. Although TCN dating does not allow determination of the entire life span of the rockslide, its scarp predisposed by NE- to ENE-striking fault was largely exposed in the Last Glacial during marine isotope stages (MIS) 3 and 2 between ~ 43 and 23 ka, suggesting slow gradual or multievent movement of the rockslide slope rather than a single catastrophic event. We conclude that, although very rare in Central Europe, rockslides in the crystalline rocks of the Palaeozoic orogens may leave a much longer topographic footprint than in the adjacent Alpine mountain belts.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10508 - Physical geography

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Landslides

ISSN

1612-510X

e-ISSN

1612-5118

Volume of the periodical

20

Issue of the periodical within the volume

April 2023

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

1705-1718

UT code for WoS article

000977124800001

EID of the result in the Scopus database

2-s2.0-85153599122