| Abstract |
The Kotuy intrusive complex was identified from the geological survey of the western slope of the Anabar Massif in the middle reaches of the Kotuy River. It is represented by dolerite–gabbrodolerite sills and dikes of Vendian age (556 ± 28 Ma). A number of sills are characterized by 30–80 m thickness, and dikes often have a length of a few dozen kilometers. The distribution area of the complex is a few hundred square kilometers. However, the geodynamic evidence for the formation of extensive intrusive bodies in the northern part of Siberia in the Vendian is not clear. We present new geochronological, geochemical, and paleomagnetic data indicating that at least part of the Kotuy magmatic complex intrusions in the middle reaches of the Kotuy River should be attributed to the ~1500 Ma Kengede magmatic complex (Kuonamka large igneous province). In this light, the very existence of Vendian intrusive magmatism on the western slope of the Anabar massif appears questionable. |
| Authors |
A. M. Pasenko  , Sergey V. Malyshev , Anna A. Pazukhina , Aleksandr D. Savelev , G. V. Lipenkov , Kevin R. Chamberlain 
|
| Journal Info |
Pleiades Publishing | Doklady Earth Sciences
|
| Publication Date |
12/19/2023 |
| ISSN |
1028-334X |
Type |
article |
| Open Access |
closed
|
| DOI |
https://doi.org/10.1134/s1028334x2360278x |
| Keywords |
sedimentary basins (Score: 0.442964)
|
