| Abstract |
According to the Anabar massif western slope geological survey in the Kotuy River middle reaches, the Kotuy intrusive complex was identified. It 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 the top tens km. The complex distribution area is the first hundreds of km2. At the same time, the geodynamic reasons for the formation extensive intrusive bodies in the north of Siberia in the Vendian are 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 magmatic province). In this light, the question arises about the correctness of the allocation of the stage of intrusive magmatism of the Vendian age on the western slope of the Anabar massif. |
| Authors |
A. M. Pasenko  , Sergey Malyshev , Anna A. Pazukhina , Aleksandr D. Savelev , G. V. Lipenkov , K. R. Chemberlain 
|
| Journal Info |
Russian Academy of Sciences | Доклады РОССИЙСКОЙ АКАДЕМИИ НАУК Науки о Земле , vol: 514
, iss: 2
|
| Publication Date |
9/12/2024 |
| ISSN |
2686-7397 |
Type |
article |
| Open Access |
closed
|
| DOI |
https://doi.org/10.31857/s2686739724020033 |
| Keywords |
Massif (Score: 0.78291607) , Anorthosite (Score: 0.6752309)
|
