Stratigraphy and isotopic age of the Lopian complex in the Lekhta structure of northern Karelia

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Stratigraphy and isotopic age of the Lopian complex in the Lekhta structure of northern Karelia. / Matrenichev, V. A.; Alfimova, N. A.; Levchenkov, O. A.; Savatenkov, V. M.; Belyatskii, B. V.; Makeev, A. F.; Yakovleva, S. Z.; Astaf'eva, M. M.

в: Stratigraphy and Geological Correlation, Том 19, № 6, 12.2011, стр. 579-599.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Author

Matrenichev, V. A. ; Alfimova, N. A. ; Levchenkov, O. A. ; Savatenkov, V. M. ; Belyatskii, B. V. ; Makeev, A. F. ; Yakovleva, S. Z. ; Astaf'eva, M. M. / Stratigraphy and isotopic age of the Lopian complex in the Lekhta structure of northern Karelia. в: Stratigraphy and Geological Correlation. 2011 ; Том 19, № 6. стр. 579-599.

BibTeX

@article{3497522a17744688bf673143f5fe1ac2,

title = "Stratigraphy and isotopic age of the Lopian complex in the Lekhta structure of northern Karelia",

abstract = "New data on the stratigraphy and isotopic age of supracrustal rocks from the lower part of the section constituting the northeastern limb of the Lekhta structure (northern Karelia) and their relationships with the basement are considered. Geological-petrographic, lithological-geochemical, and isotopic data are used to define three formations united into the Okhta Group. Immediate relationships between volcanics of the greenstone belt and granitoids of the basement represented by the oldest (for the Baltic Shield: 2.8 Ga) continental weathering crust after granites, are discussed. Isotopic age of volcanics and granite gneisses of the basement indicates that the Lopian supracrustal complex of the Lekhta structure was deposited in a period lasting 16 myr with duration of periods corresponding to formation of the Okhta and Pebozero groups being as long as 8 and 11 myr, respectively. In the regional stratigraphic scale, the entire Archean part of the supracrustal section in the Lekhta structure should be attributed to the Middle Lopian.",

keywords = "Archean, greenstone belt, isotopic age, stratigraphy, weathering crust",

author = "Matrenichev, {V. A.} and Alfimova, {N. A.} and Levchenkov, {O. A.} and Savatenkov, {V. M.} and Belyatskii, {B. V.} and Makeev, {A. F.} and Yakovleva, {S. Z.} and Astaf'eva, {M. M.}",

year = "2011",

month = dec,

doi = "10.1134/S0869593811050078",

language = "English",

volume = "19",

pages = "579--599",

journal = "Stratigraphy and Geological Correlation",

issn = "0869-5938",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "6",

}

RIS

TY - JOUR

T1 - Stratigraphy and isotopic age of the Lopian complex in the Lekhta structure of northern Karelia

AU - Matrenichev, V. A.

AU - Alfimova, N. A.

AU - Levchenkov, O. A.

AU - Savatenkov, V. M.

AU - Belyatskii, B. V.

AU - Makeev, A. F.

AU - Yakovleva, S. Z.

AU - Astaf'eva, M. M.

PY - 2011/12

Y1 - 2011/12

N2 - New data on the stratigraphy and isotopic age of supracrustal rocks from the lower part of the section constituting the northeastern limb of the Lekhta structure (northern Karelia) and their relationships with the basement are considered. Geological-petrographic, lithological-geochemical, and isotopic data are used to define three formations united into the Okhta Group. Immediate relationships between volcanics of the greenstone belt and granitoids of the basement represented by the oldest (for the Baltic Shield: 2.8 Ga) continental weathering crust after granites, are discussed. Isotopic age of volcanics and granite gneisses of the basement indicates that the Lopian supracrustal complex of the Lekhta structure was deposited in a period lasting 16 myr with duration of periods corresponding to formation of the Okhta and Pebozero groups being as long as 8 and 11 myr, respectively. In the regional stratigraphic scale, the entire Archean part of the supracrustal section in the Lekhta structure should be attributed to the Middle Lopian.

AB - New data on the stratigraphy and isotopic age of supracrustal rocks from the lower part of the section constituting the northeastern limb of the Lekhta structure (northern Karelia) and their relationships with the basement are considered. Geological-petrographic, lithological-geochemical, and isotopic data are used to define three formations united into the Okhta Group. Immediate relationships between volcanics of the greenstone belt and granitoids of the basement represented by the oldest (for the Baltic Shield: 2.8 Ga) continental weathering crust after granites, are discussed. Isotopic age of volcanics and granite gneisses of the basement indicates that the Lopian supracrustal complex of the Lekhta structure was deposited in a period lasting 16 myr with duration of periods corresponding to formation of the Okhta and Pebozero groups being as long as 8 and 11 myr, respectively. In the regional stratigraphic scale, the entire Archean part of the supracrustal section in the Lekhta structure should be attributed to the Middle Lopian.

KW - Archean

KW - greenstone belt

KW - isotopic age

KW - stratigraphy

KW - weathering crust

UR - http://www.scopus.com/inward/record.url?scp=82855177992&partnerID=8YFLogxK

UR - https://elibrary.ru/item.asp?id=17238769

U2 - 10.1134/S0869593811050078

DO - 10.1134/S0869593811050078

M3 - Article

AN - SCOPUS:82855177992

VL - 19

SP - 579

EP - 599

JO - Stratigraphy and Geological Correlation

JF - Stratigraphy and Geological Correlation

SN - 0869-5938

IS - 6

ER -

ID: 9371393