Zones of activation and volcanism

Sidorov, A. A.; Волков, А. В.; Alekseev, V. Yu.

doi:10.1134/s074204631303007x

Cited by 7 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with zircon (U-Th)/He thermochronometric data from the southern part of the Prikolyma Terrane, confirming an episode of rapid cooling and exhumation at 137 Ma [110]. The Omsukchan basin most likely represented an Early Cretaceous [95][96][97][98] small rift, oriented orthogonal to the Uda-Murgal arc. In contrast to the Jurassic deposits of the Sugoi basin, the Lower Cretaceous strata of the Omsukchan basin do not contain abundant Middle Jurassic zircons, implying that erosion of Jurassic sedimentary strata and coeval volcanics did not extensively contribute to the clastic provenance in the Early Cretaceous.…”

Section: Discussionsupporting

confidence: 70%

See 1 more Smart Citation

Detrital Zircon U-Pb Data for Jurassic–Cretaceous Strata from the South-Eastern Verkhoyansk-Kolyma Orogen—Correlations to Magmatic Arcs of the North-East Asia Active Margin

Ershova

Stöckli

2021

Minerals

View full text Add to dashboard Cite

We performed U-Pb dating of detrital zircons collected from Middle–Upper Jurassic strata of the Sugoi synclinorium and Cretaceous rocks of the Omsukchan (Balygychan-Sugoi) basin, in order to identify their provenance and correlate Jurassic–Cretaceous sedimentation of the south-eastern Verkhoyansk-Kolyma orogenic belt with various magmatic belts of the north-east Asia active margins. In the Middle–Late Jurassic, the Uda-Murgal magmatic arc represented the main source area of clastics, suggesting that the Sugoi basin is a back-arc basin. A major shift in the provenance signature occurred during the Aptian, when granitoids of the Main (Kolyma) batholith belt, along with volcanic rocks of the Uyandina-Yasachnaya and Uda-Murgal arcs, became the main sources of clastics deposited in the Omsukchan basin. In a final Mesozoic provenance shift, granitoids of the Main (Kolyma) batholith belt, along with volcanic and plutonic rocks of the Uyandina-Yasachnaya and Okhotsk-Chukotka arcs, became the dominant sources for clastics in the Omsukchan basin in the latest Cretaceous. A broader comparison of detrital zircon age distributions in Jurassic–Cretaceous deposits across the south-eastern Verkhoyansk-Kolyma orogen illustrates that the Sugoi and Omsukchan basins did not form along the distal eastern portion of the Verkhoyansk passive margin, but in the Late Mesozoic back-arc basins.

show abstract

Section: Discussionsupporting

confidence: 70%

“…In contrast, Parfenov [3], Kuznetsov, and Livach [92] interpreted the Omsukchan basin as a piggy-back basin with the Verkhoyansk-Kolyma orogenic belt. However, most recent studies have considered the basin as rift-related [93][94][95][96][97][98].…”

Section: Sugoi Synclinorium and Omsukchan Basinmentioning

confidence: 99%