Abstract
Three major unconformities (Regional pre-Miocene, Early Eocene, post-Campanian) are regionally traced in the depressions of the Eurasian Basin. They are dated either by well data (ACEX IODP 302 on the Lomonosov Ridge), or by correlation of their onlaps on acoustic basement with the nearest identifiable linear magnetic anomaly.
The interpretation of pre-Cenozoic stratigraphy in the Central Arctic Uplifts Complex (CAUC) was based on tracing several regional seismic reflectors from seismic lines tied to wells drilled onshore and offshore Alaska into the North Chukchi Trough, with identification of Brookian, Lower Cretaceous and Upper Jurassic unconformities in the latter. This procedure was facilitated by previously established continuity of these unconformities from North Chukchi Trough into Vilkitsky Trough and Podvodnikov Basin. The established reflectors through the system of the Russian MCS profiles were further traced onto the entire Central Arctic Uplifts Complex.
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Poselov, V.A., Butsenko, V.V., Kireev, A.A., Smirnov, O.E., Zholondz, S.M. (2019). Seismic Stratigraphy of Sedimentary Cover. In: Piskarev, A., Poselov, V., Kaminsky, V. (eds) Geologic Structures of the Arctic Basin. Springer, Cham. https://doi.org/10.1007/978-3-319-77742-9_2
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