Palaeoseismicity recorded in soft-sediment deformation structures within a 166-m-long drill core from Diexi Palaeolake, eastern Tibetan Plateau

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00642827" target="_blank" >RIV/67985530:_____/25:00642827 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11629-025-9874-y" target="_blank" >https://link.springer.com/article/10.1007/s11629-025-9874-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11629-025-9874-y" target="_blank" >10.1007/s11629-025-9874-y</a>

Result language

angličtina

Original language name

Palaeoseismicity recorded in soft-sediment deformation structures within a 166-m-long drill core from Diexi Palaeolake, eastern Tibetan Plateau

Original language description

Soft-sediment deformation structures (SSDS) in water-saturated, unconsolidated sediments are the product of various causes and provide a valuable record of environmental and geological perturbations. We report a record of SSDS preserved in a ~166 m-long drill core (DX-2) extracted from the Late Pleistocene Diexi Palaeolake, eastern Tibetan Plateau. Two factors make this an outstanding site for studying SSDS: (1) it is among the most seismically active regions on Earth, and (2) it has experienced extremely fast sedimentation rates (~15 mm/yr) thanks to the prodigious sediment supply from seismically perturbed hillslopes and rivers upstream. We describe and interpret 13 SSDS types within the DX-2 based on detailed sedimentological, morphological, and lithological analysis. We consider the genesis of the abundant SSDS observed in the DX- 2 core with several possibilities: mass movement, rock avalanche-driven tsunamis, rapid sedimentation, and seismic shaking as the most probable triggering mechanisms. We suggest high intensity earthquakes of VI (Modified Mercalli Intensity) or greater as drivers of SSDS in the DX-2. Based on our observations, we propose a conceptual model that attempts to explain the transition from ductile to brittle SSDS behaviour with progressive accumulation and consolidation of the sediment pile. This paper highlights the value of SSDS analysis in palaeo-earthquake identification, aiming to improve the applicability of SSDS as a palaeo-earthquake marker in alpine and canyon areas

Czech name

—

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

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA22-13190S" target="_blank" >GA22-13190S: Establishing the Chronology of the First Great Eurasian Ice Sheets</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Mountain Science

ISSN

1672-6316

e-ISSN

1993-0321

Volume of the periodical

22

Issue of the periodical within the volume

12

Country of publishing house

CN - CHINA

Number of pages

26

Pages from-to

4464-4489

UT code for WoS article

001645391200017

EID of the result in the Scopus database

2-s2.0-105025469263