Published 1987 | Version v1
Journal article Metadata-only

Polychronous high-thermal metamorphism of ancient rocks of West Karelia

Creators

  • 1. AN SSSR, Leningrad. Inst. Geologii i Geokhronologii Dokembriya
  • 2. Vsesoyuznyj Nauchno-Issledovatel'skij Geologicheskij Inst., Leningrad (USSR)

Description

An attempt is made to date by zircons of early metamorphic events of ancient rocks of West Karelia. Samples have been selected of rocks metamorphized under conditions of amphibole facies non-affected by granulitic metamorphism (feldspar primarily gabbro amphibolite and gneisso-tonalite). Values of U-Pb age for zircons of different generation, billion years, 2.76-2.74, 2.71-2.67, 3.37-3.13 are obtained. The conducted isotopic-geochronological investigation into zircons confirms earlier disclosed succession of metamorphic events in West Karelia

Additional details

Additional titles

Original title (Russian)
Полихронный высокотермальный метаморфизм древнейших пород Западной Карелии

Publishing Information

Journal Title
Dokl. Akad. Nauk SSSR
Journal Volume
292
Journal Issue
6
Series
Dokl. Akad. Nauk SSSR.
Journal Page Range
1441-1445
ISSN
0002-3264
CODEN
DANKA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
19065763
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ISOTOPE DATING; ISOTOPE RATIO; LEAD 206; LEAD 207; LEAD 208; METAMORPHIC ROCKS; METAMORPHISM; URANIUM; ZIRCON
Descriptors DEC
ACTINIDES; AGE ESTIMATION; ELEMENTS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEAD ISOTOPES; METALS; MILLISEC LIVING RADIOISOTOPES; MINERALS; NUCLEI; RADIOISOTOPES; ROCKS; SILICATE MINERALS; STABLE ISOTOPES