The K-Ar system, lithomineralogical, and geostructural characteristics of the Jurassic terrigenous complex in the Northeastern Caucasus |
| |
| Authors: | Yu O Gavrilov Yu V Kushcheva I V Latysheva D O Gertsev |
| |
| Institution: | 1. Geological Institute, Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 119017, Russia
2. Faculty of Geology, Moscow State University, Leninskie gory 1, Moscow, 119991, Russia
|
| |
| 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
