Published June 1990 | Version v1
Journal article Metadata-only

U-Pb geochronology of belomorids from the region of Tupaya Guba of Kovdozero lake (Northern Karelia)

Creators

  • 1. Vsesoyuznyj Nauchno-Issledovatel'skij Inst. Mineral'nogo Syr'ya, Moscow (USSR)
  • 2. AN SSSR, Moscow (USSR). Geologicheskij Inst.
  • 3. AN SSSR, Moscow (USSR). Inst. Geokhimii i Analiticheskoj Khimii
  • 4. AN SSSR, Apatity (USSR). Kol'skij Filial

Description

The first results of isotope-geochronological study of Archean Belomorje in the region of granulitic facies rock development are presented. According to the U-Pb- and Pb-Pb methods, heterogeneity and various ages of zircons from metadiorites (granulites) and granitoids are established. The are of the main stage of metamorphism (amphibolitic-granulitic facies) of the Belomorje complex in the region studied is 2.65 billion years; the age of earlier granulites according to geological and petrological data may be more ancient than 2.8 billion years

Additional details

Additional titles

Original title (Russian)
У-Пб-геохронология беломорид пайона Тупой Губы оз.Ковдозеро (Северная Карелия)

Publishing Information

Journal Title
Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya
Journal Issue
no.6
Series
Izv. Akad. Nauk SSSR, Ser. Geol.
ISSN
0321-1703
CODEN
IANGA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
22041403
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CHEMICAL COMPOSITION; IGNEOUS ROCKS; ISOTOPE DATING; LEAD ISOTOPES; METAMORPHIC ROCKS; URANIUM ISOTOPES; ZIRCON
Descriptors DEC
AGE ESTIMATION; MINERALS; ROCKS; SILICATE MINERALS