Micromorphology of cryoconite on Garabashi and Skhelda glaciers and soils of Baksan Gorge, Mt. Elbrus, Central Caucasus

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Micromorphology of cryoconite on Garabashi and Skhelda glaciers and soils of Baksan Gorge, Mt. Elbrus, Central Caucasus. / Abakumov, Evgeny ; Tembotov, Rustam ; Kushnov, Ivan ; Polyakov, Vyacheslav.

In: Polish Polar Research, Vol. 43, No. 1, 2022, p. 1-20.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{d014d7c211e3419c88fbf1caff56d736,

title = "Micromorphology of cryoconite on Garabashi and Skhelda glaciers and soils of Baksan Gorge, Mt. Elbrus, Central Caucasus",

abstract = "In the Central Caucasus region, the intense process of deglaciation is identified as caused by cryoconite formation and accumulation. The fine earth materials were collected on the surfaces of Skhelda and Garabashi glaciers as well as from zonal soils of Baksan Gorge and were studied in terms of chemical, particle-size, and micromorpholo-gical features. Supraglacial sediments are located at the glacial drift area of material and, thus, due to transfer of these sediments to the foothill area, their fine earth material can affect micromorphological and chemical characteristics of adjacent zonal soils. Thin sections of mineral and organo-mineral micromonoliths were analyzed by classic micromorphological methods. Data obtained showed that the weathering rates of cryoconite and soil minerals are different. The cryoconite material on the debris-covered Skhelda Glacier originated from local massive crystalline rocks and moraines, while for Garabashi Glacier the volcanic origin of cryoconite is more typical. Soils of Baksan Gorge are characterized by more developed microfabric and porous media, but their mineralogical composition is essentially inherited from sediments of glacial and periglacial soils. These new data could be useful for understanding the process of evolution of the mineral matrix of cryoconite to the soil matrix formed at the foot of the mountain.",

keywords = "Caucasus, deglaciation, Russia, sediments, weathering",

author = "Evgeny Abakumov and Rustam Tembotov and Ivan Kushnov and Vyacheslav Polyakov",

note = "Publisher Copyright: {\textcopyright} 2022. Evgeny Abakumov, Rustam Tembotov, Ivan Kushnov and Vyacheslav Polyakov.",

year = "2022",

doi = "10.24425/ppr.2021.138590",

language = "English",

volume = "43",

pages = "1--20",

journal = "Polish Polar Research",

issn = "0138-0338",

publisher = "De Gruyter",

number = "1",

}

RIS

TY - JOUR

T1 - Micromorphology of cryoconite on Garabashi and Skhelda glaciers and soils of Baksan Gorge, Mt. Elbrus, Central Caucasus

AU - Abakumov, Evgeny

AU - Tembotov, Rustam

AU - Kushnov, Ivan

AU - Polyakov, Vyacheslav

PY - 2022

Y1 - 2022

N2 - In the Central Caucasus region, the intense process of deglaciation is identified as caused by cryoconite formation and accumulation. The fine earth materials were collected on the surfaces of Skhelda and Garabashi glaciers as well as from zonal soils of Baksan Gorge and were studied in terms of chemical, particle-size, and micromorpholo-gical features. Supraglacial sediments are located at the glacial drift area of material and, thus, due to transfer of these sediments to the foothill area, their fine earth material can affect micromorphological and chemical characteristics of adjacent zonal soils. Thin sections of mineral and organo-mineral micromonoliths were analyzed by classic micromorphological methods. Data obtained showed that the weathering rates of cryoconite and soil minerals are different. The cryoconite material on the debris-covered Skhelda Glacier originated from local massive crystalline rocks and moraines, while for Garabashi Glacier the volcanic origin of cryoconite is more typical. Soils of Baksan Gorge are characterized by more developed microfabric and porous media, but their mineralogical composition is essentially inherited from sediments of glacial and periglacial soils. These new data could be useful for understanding the process of evolution of the mineral matrix of cryoconite to the soil matrix formed at the foot of the mountain.

AB - In the Central Caucasus region, the intense process of deglaciation is identified as caused by cryoconite formation and accumulation. The fine earth materials were collected on the surfaces of Skhelda and Garabashi glaciers as well as from zonal soils of Baksan Gorge and were studied in terms of chemical, particle-size, and micromorpholo-gical features. Supraglacial sediments are located at the glacial drift area of material and, thus, due to transfer of these sediments to the foothill area, their fine earth material can affect micromorphological and chemical characteristics of adjacent zonal soils. Thin sections of mineral and organo-mineral micromonoliths were analyzed by classic micromorphological methods. Data obtained showed that the weathering rates of cryoconite and soil minerals are different. The cryoconite material on the debris-covered Skhelda Glacier originated from local massive crystalline rocks and moraines, while for Garabashi Glacier the volcanic origin of cryoconite is more typical. Soils of Baksan Gorge are characterized by more developed microfabric and porous media, but their mineralogical composition is essentially inherited from sediments of glacial and periglacial soils. These new data could be useful for understanding the process of evolution of the mineral matrix of cryoconite to the soil matrix formed at the foot of the mountain.

KW - Caucasus

KW - deglaciation

KW - Russia

KW - sediments

KW - weathering

UR - http://www.scopus.com/inward/record.url?scp=85130238539&partnerID=8YFLogxK

U2 - 10.24425/ppr.2021.138590

DO - 10.24425/ppr.2021.138590

M3 - Article

AN - SCOPUS:85130238539

VL - 43

SP - 1

EP - 20

JO - Polish Polar Research

JF - Polish Polar Research

SN - 0138-0338

IS - 1

ER -

ID: 91857179