A late Pleistocene glacial maximum during MIS 3 in the Chersky Mountains, central northeast Siberia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F25%3A00638440" target="_blank" >RIV/67985530:_____/25:00638440 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10504047

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/quaternary-research/article/late-pleistocene-glacial-maximum-during-mis-3-in-the-chersky-mountains-central-northeast-siberia/96F0C5556D8CEA11D364B6756F335741" target="_blank" >https://www.cambridge.org/core/journals/quaternary-research/article/late-pleistocene-glacial-maximum-during-mis-3-in-the-chersky-mountains-central-northeast-siberia/96F0C5556D8CEA11D364B6756F335741</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/qua.2025.20" target="_blank" >10.1017/qua.2025.20</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A late Pleistocene glacial maximum during MIS 3 in the Chersky Mountains, central northeast Siberia

Popis výsledku v původním jazyce

The glacial history of northeast Siberia is poorly understood compared with other high-latitude regions. Using 10Be and 26Al exposure dating together with remote sensing, we have investigated the glacial history of a remote, formerly glaciated valley in the Tas-Kystabyt Range of the Chersky Mountains in central northeast Siberia. Based on measurements from moraine boulders and bedrock samples, we find evidence for deglaciation of the valley 45.6 +/- 3.4 ka ago, that is during the peak of Marine Isotope Stage 3. Satellite imagery of the range reveals at least two generations of moraines in other nearby valleys, indicating that multiple stages of glaciation took place across the Tas-Kystabyt Range. Based on calculated equilibrium-line altitudes, we speculate that the outer set of moraines is linked to the 45.6 +/- 3.4 ka deglaciation event identified by our dating, while the inner generation of moraines is associated with a younger glaciation event, possibly the last glacial maximum (LGM). Thus, our results reaffirm current impressions that the maximum ice extent during the last glacial cycle was reached before the global LGM in northeast Siberia.

Název v anglickém jazyce

A late Pleistocene glacial maximum during MIS 3 in the Chersky Mountains, central northeast Siberia

Popis výsledku anglicky

The glacial history of northeast Siberia is poorly understood compared with other high-latitude regions. Using 10Be and 26Al exposure dating together with remote sensing, we have investigated the glacial history of a remote, formerly glaciated valley in the Tas-Kystabyt Range of the Chersky Mountains in central northeast Siberia. Based on measurements from moraine boulders and bedrock samples, we find evidence for deglaciation of the valley 45.6 +/- 3.4 ka ago, that is during the peak of Marine Isotope Stage 3. Satellite imagery of the range reveals at least two generations of moraines in other nearby valleys, indicating that multiple stages of glaciation took place across the Tas-Kystabyt Range. Based on calculated equilibrium-line altitudes, we speculate that the outer set of moraines is linked to the 45.6 +/- 3.4 ka deglaciation event identified by our dating, while the inner generation of moraines is associated with a younger glaciation event, possibly the last glacial maximum (LGM). Thus, our results reaffirm current impressions that the maximum ice extent during the last glacial cycle was reached before the global LGM in northeast Siberia.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Quaternary Research

ISSN

0033-5894

e-ISSN

1096-0287

Svazek periodika

128

Číslo periodika v rámci svazku

Nov.

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

91-101

Kód UT WoS článku

001549463200001

EID výsledku v databázi Scopus

2-s2.0-105011830745