TY - JOUR

T1 - Early Pleistocene Pedosediments of the Lori Basin (Armenia)

T2 - Genesis, Properties, and Paleogeographic Interpretation

AU - Revunova, A. V.

AU - Khokhlova, O. S.

AU - Rusakov, A. V.

N1 - Publisher Copyright: © 2021, Pleiades Publishing, Ltd.

PY - 2021/10/1

Y1 - 2021/10/1

N2 - Abstract: Red-colored pedosediments were described in the sections of the Lori Basin in northern Armenia. The environmental conditions in the period of their formation have been reconstructed. The Early Pleistocene pedosediments in Yagdan and Kurtan-IV sections are available for study due to their conservation under the products of volcanic activity, which are dated earlier than 2 and 1.4 Ma, respectively. Prior to burial, the pedosediments were exposed to molten lava, which affected their composition and properties. We used the micromorphological method to study the pedosediments and determined the magnetic susceptibility, particle-size and total chemical composition, the content of carbon and nitrogen, and the biomorphs. Signs of the formation of the studied pedosediments in a humid warm (subtropical) climate were found, which corresponded to the results of earlier studies. Based on the combination of features, soil formations from the Yagdan section were assigned to Cambisols with Argic, Vitric, and Chromic qualifiers. Additional elements were input from the above layer of basalt lava to the sediments: copper, chromium, nickel, cobalt, and vanadium, which was reflected in an increase in the specific magnetic susceptibility and enabled us to specify the soil and sediments by geochemical coefficients. Pedosediments from Kurtan-IV section were characterized by Stagnic and Luvic features. They were also formed in a humid but cooler climate.

AB - Abstract: Red-colored pedosediments were described in the sections of the Lori Basin in northern Armenia. The environmental conditions in the period of their formation have been reconstructed. The Early Pleistocene pedosediments in Yagdan and Kurtan-IV sections are available for study due to their conservation under the products of volcanic activity, which are dated earlier than 2 and 1.4 Ma, respectively. Prior to burial, the pedosediments were exposed to molten lava, which affected their composition and properties. We used the micromorphological method to study the pedosediments and determined the magnetic susceptibility, particle-size and total chemical composition, the content of carbon and nitrogen, and the biomorphs. Signs of the formation of the studied pedosediments in a humid warm (subtropical) climate were found, which corresponded to the results of earlier studies. Based on the combination of features, soil formations from the Yagdan section were assigned to Cambisols with Argic, Vitric, and Chromic qualifiers. Additional elements were input from the above layer of basalt lava to the sediments: copper, chromium, nickel, cobalt, and vanadium, which was reflected in an increase in the specific magnetic susceptibility and enabled us to specify the soil and sediments by geochemical coefficients. Pedosediments from Kurtan-IV section were characterized by Stagnic and Luvic features. They were also formed in a humid but cooler climate.

KW - paleolandscape reconstruction

KW - paleosol

KW - red-colored soils

KW - RECORDS

KW - SOILS

KW - SITES

KW - NORTHERN ARMENIA

KW - PEDOGENESIS

KW - PALEOSOLS

KW - FEATURES

UR - http://www.scopus.com/inward/record.url?scp=85119965076&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/134c85ad-0731-3786-b6cc-d97a8f2c3bfa/

U2 - 10.1134/s1064229321100100

DO - 10.1134/s1064229321100100

M3 - Article

AN - SCOPUS:85119965076

VL - 54

SP - 1449

EP - 1462

JO - Eurasian Soil Science

JF - Eurasian Soil Science

SN - 1064-2293

IS - 10

ER -