Composition and isotopic characteristic of gneyss-granit of the Chechek Dome structure (Irtysh Shear Zone, East Kazakhstan)
| Autor: | I. A. Savinskiy |
|---|---|
| Jazyk: | English<br />Russian |
| Rok vydání: | 2016 |
| Předmět: |
геохимия
протолит метаморфизм гранитообразование зона смятия сдвиговая зона купольная структура иртышская и чечекская зоны смятия восточный казахстан geochemistry petrochemistry protolith metamorphism granite irtysh shear zone domed structure east kazakhstan Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
| Zdroj: | Литосфера, Vol 0, Iss 5, Pp 81-90 (2016) |
| Druh dokumentu: | article |
| ISSN: | 1681-9004 2500-302X |
| Popis: | The paper presents geochemical and isotopic characteristics of gneyss-granite of the Chechek dome structure that located in Irtysh Shear Zone. It shows that all “granitoid” of Chechek structure have a similar composition. Reconstruction of primary substrate is based on this data. It was found that gneyss-granite protolith is silty-sandy sediments Kalba-Narym basin from D2 to C1. Nd model age of the protolith responds meso- and neoproterozoic (1.0-1.1 GA), which is consistent with the model ages of high metamorphic and sedimentary rocks that are located in the Irtysh Shear Zone. |
| Databáze: | Directory of Open Access Journals |
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