Аннотация:The mafic-ultramafic rocks occur on the periphery of the
Kodar-Udokan basin. They belong to the Chiney
Intrusive Complex. The largest bodies are the Chiney
and Luktur plutons, as well as the Upper Sakukan and
Mylovskiy layered mafic-ultramafic intrusions.
Gabbronorite dikes also belong to the Chiney Complex,
with the Main Udokan Dike (up to 200 m thick) being
the largest. The geochemical and geophysical data indicate
that outcrops of mafic and ultramafic rocks at the
margins of the Lurbun granite-granodiorite
pluton,
which cuts through the Chiney pluton, also belong to the
Chiney Complex.