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- Title
The K-Ar system, lithomineralogical, and geostructural characteristics of the Jurassic terrigenous complex in the Northeastern Caucasus.
- Authors
Gavrilov, Yu.; Kushcheva, Yu.; Latysheva, I.; Gertsev, D.
- Abstract
The paper discusses changes in both mineral composition and structural-textural characteristics of the Jurassic terrigenous complex along the Avar Koisu River (Dagestan) profile that intersects rocks with significantly various types of deformation. The profile extends from the monoclinal zone to the intense deformation and cleavage development zone. The alterations are manifested in the change of clay mineral assemblages, polytype modifications of micaceous minerals and their crystallinity index, rock density, reflectance of vitrinite, and other properties. Growth of the degree of secondary alterations (primarily, cleavage intensity) is accompanied by an appreciable decrease in K-Ar age of rocks and simultaneous increase of their stratigraphic age.
- Subjects
CAUCASUS; ROCK density; SEDIMENTARY rocks; DEFORMATIONS (Mechanics); CRYSTAL structure; CLAY; STRATIGRAPHIC geology; JURASSIC Period
- Publication
Lithology & Mineral Resources, 2012, Vol 47, Issue 6, p473
- ISSN
0024-4902
- Publication type
Article
- DOI
10.1134/S0024490212060028