The time of the main submersion to the oceanic depths and the scale of different age rifting in the Arctic Basin based on the results of seismic data interpretation
Abstract
The article answers two topical questions: the time of the main submergence to the ocean depths, the age and extent of rifting. It is shown that the Arctic Ocean was formed simultaneously across the entire Arctic Basin, regardless of the sign of Recent structures. The submergence began in the Oligocene and increased sharply from the Middle Miocene. Different stages of basin submergence to oceanic depths, which determined morphology of modern slopes, have been identified. It is shown that the horst and graben system recorded all over the Arctic Basin, occurred at the orogenic stage of the growth of elevations, broken in the course of orogenesis into intermontane and piedmont depressions and troughs. A huge time gap between the submergence to the ocean depths (Middle Miocene) and the formation of the horst and graben structure has been established. Grabens’ dimensions are very modest and do not correlate with known rifts.
About the Authors
L. A. Daragan-Sushchova
A. P. Karpinsky Russian Geological Research Institute (VSEGEI)
Russian Federation
Russian Federation
Candidate of Geological and Mineralogical Sciences, Lead Researcher
V. N. Zinchenko
A. P. Karpinsky Russian Geological Research Institute (VSEGEI)
Russian Federation
Russian Federation
Candidate of Geological and Mineralogical Sciences, Lead Researcher
Yu. I. Daragan-Sushchov
The All-Russia Scientific Research Institute of Geology and Mineral Resources of the World Ocean named after academician I. S. Gramberg (VNIIOkeangeologia)
Russian Federation
Russian Federation
Candidate of Geological and Mineralogical Sciences, Lead Researcher
I. N. Savel’ev
A. P. Karpinsky Russian Geological Research Institute (VSEGEI)
Russian Federation
Russian Federation
Engineer
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Review
For citations:
Daragan-Sushchova L.A., Zinchenko V.N., Daragan-Sushchov Yu.I., Savel’ev I.N. The time of the main submersion to the oceanic depths and the scale of different age rifting in the Arctic Basin based on the results of seismic data interpretation. Regional Geology and Metallogeny. 2019;(80):5–20. (In Russ.)
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