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GeoRef Categories
Era and Period
Epoch and Age
Date
Availability
Koryak Range
Behavior of Platinum-Group Elements during Hydrous Metamorphism: Constraints from Awaruite (Ni 3 Fe) Mineralization Open Access
Sidorovite, PtFe 3 , A NEW MINERAL FROM THE SNEGOVAYA RIVER PLACER, KORYAK HIGHLANDS, RUSSIA Available to Purchase
Auroselenide, AuSe, a new mineral from Maletoyvayam deposit, Kamchatka peninsula, Russia Available to Purchase
Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia Available to Purchase
“Kamchatite” diamond aggregate from northern Kamchatka, Russia: New find of diamond formed by gas phase condensation or chemical vapor deposition Available to Purchase
Origin of Platinum-Group Mineral Assemblages from Placers in Rivers Draining from the Ural-Alaskan Type Itchayvayamsky Ultramafics, Far East Russia Available to Purchase
Platinum-group mineral assemblage of the Prizhimny Creek ( Koryak Highland ) Available to Purchase
Mesozoic tectono-stratigraphic terranes of the Koryak-Chukotka region Available to Purchase
The distribution and tectonic settings of structurally complex domains of generally folded and thrust-faulted, commonly allochthonous, rock assemblages, recognized in the very large (250,000 km 2 ) Koryak Upland and Chukotka regions, support the conclusion that Late Jurassic, Early Cretaceous, and Late Cretaceous shortening and, at times, accretion resulted in incorporation of the terranes into a structural collage at the northeastern Asian continental margin. The main stages of accretion and continental growth took place in the late Mesozoic during the Middle–Late Jurassic, at the Early-Late Cretaceous boundary, and in late Maastrichtian time. The Late Jurassic was the emergence time of the Oloi and Uda-Murgal volcanic belts, extending along the convergent boundaries between Siberia and the proto-Arctic and Pacific Oceans, respectively. Convergence persisted until the end of the Early Cretaceous. In Chukotka, convergence ended with collision of the Chukotka microcontinent with the active margin of Siberia that hosted the Oloi volcanic belt. During this collision, the southern passive margin of Chukotka was overthrust by tectonic nappes composed of tectono-stratigraphic units of the South Anyui terrane. Greenschists with ages of 115–119 Ma are related to accretion of oceanic- and island-arc terranes incorporated into the frontal zone of the Uda-Murgal island-arc system. The subsequent growth of the continental margin resulted from accretion of terranes of the North Koryak fold belt in the late Maastrichtian.