ICAM VI

Proceedings of the International Conference on Arctic Margins VI

Fairbanks, Alaska, May 2011

David B. Stone, Geophysical Institute, University of Alaska, Fairbanks, AK, USA

Garrik E. Grikurov, VNIIOkeangeologia, St. Petersburg, Russia

James G. Clough, Alaska Division of Geological & Geophysical Surveys. Fairbanks, AK, USA

Gordon N. Oakey, Geological Survey of Canada (Atlantic), Natural Resources Canada

Dennis K. Thurston U.S., Dept. of the Interior, Bureau of Ocean Energy Management, AK Region, USA

ICAM VIInternational Conference on Arctic Margins 631 May to 2 June 2011 in Fairbanks, Alaska USA

ICAM VI: Proceedings of the International Conference

on Arctic Margins VI, Fairbanks, Alaska, May 2011

Published by: A.P. Karpinsky Russian Geological Research Institute (VSEGEI)

Copyright © 2014, VSEGEI

Cover photo of Kogasukruk River, North Slope, Alaska, courtesy of Peter Flaig.

Cover concept by Meghan Murphy.Layout by Vicki Daniels, Design Services,

University of Alaska Fairbanks.

ISBN:

iv Table of Contents

Table of Contents

CHAPTER 1 1Crustal thickness in the circumpolar Arctic S.N. Kashubin, O.V. Petrov, E.A. Androsov, A.F. Morozov, V.D. Kaminsky, V.A. Poselov

CHAPTER 2 19New zircon U-Pb ages for the Lower Cantwell Formation: Implications for the Late Cretaceous paleoecology and paleoenvironment of the Lower Cantwell Formation near Sable Mountain, Denali National Park and Preserve, central Alaska Range, USA Carla Susanne Tomsich, Paul J. McCarthy, Anthony R. Fiorillo, David B. Stone, Jeff A. Benowitz, and Paul B. O’Sullivan

CHAPTER 3 61Permian and Triassic deposits of Siberian and Chukotka passive margins: Sedimentation setting and provenances M.I. Tuchkova, S.D. Sokolov, A.K. Khudoley, V.E. Verzhbitsky, Y.Hayasaka, A.V. Moiseev

CHAPTER 4 97Chukchi arctic continental margins: Tectonic evolution, link to the opening of the Amerasia Basin Sokolov S.D., Ledneva G.V., Tuchkova M.I., Luchitskaya M.V., Ganelin A.V., and Verzhbitsky V.E.

CHAPTER 5 115Intra-plate gabbroic rocks of Permo-Triassic to early-middle Triassic dike-and-sill province of Chukotka (Russia) Galina V. Ledneva, Boris A. Bazylev, Paul W. Layer, Akira Ishiwatari, Sergey D. Sokolov, Natalia N. Kononkova, Petr L. Tikhomirov and Maria S. Novikova

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ICAM VI Proceedings v

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CHAPTER 6 157U-Pb ages and tectonic setting of mid-Cretaceous magmatism in Chukotka (NE Russia) M.V. Luchitskaya, P.L. Tikhomirov, and A.L. Shats

CHAPTER 7 171Age and composition of final stage of volcanism in Okhotsk-Chukotka volcanic belt: An example from the Ola Plateau (Okhotsk segment) V. V. Akinin, P. Layer, J. Benowitz, Ntaflos, Th.

CHAPTER 8 195Lithofacies features of Carboniferous through Lower Permian strata from the Pechora Sea E.B. Suvorova, T.V.Matveeva

CHAPTER 9 203Tectonics of the sedimentary basins in the Russian sector of the Chuckchi Sea Malyshev N.A., Obmetko V.V., Borodulin A.A., Barinova E.M., and Ikhsanov B.I.

CHAPTER 10 211Zircon geochronology of bottom rocks in the central Arctic Ocean: Analytical results and some geological implications Garrik Grikurov, Oleg Petrov, Sergey Shokalsky, Pavel Rekant, Alexey Krylov, Anatoly Laiba, Boris Belyatsky, Mikhail Rozinov and Sergey Sergeev

CHAPTER 11 233The structural integrity of the Lomonosov Ridge with the North American and Siberian continental marginsV. Poselov, V. Butsenko, A. Chernykh, V. Glebovsky, H.R. Jackson, D. P. Potter, G. Oakey, J. Shimeld and C. Marcussen

CHAPTER 12 259The Arctic-2010 Cruise: Bathymetric survey for delineation of the extended continental shelf of the Russian Federation in the Arctic Sergey Alekseev, Ivan Glumov, Andrey Morozov, Konstantin Stavrov, Andrey Zen’kov, and Denis Zhilin

CHAPTER 13 265Early evolution stages of the Arctic margins (Neoproterozoic-Paleozoic) and plate reconstructions V. A. Vernikovsky, D. V. Metelkin, A. E. Vernikovskaya, N. Yu. Matushkin, L. I. Lobkovsky, E. V. Shipilov

CHAPTER 14 2873D geodynamics of Arctic region and model of Amerasian Basin formation L.I. Lobkovsky, M.V. Kononov, I.A. Garagash, V.E. Verzhbitsky, and V.D. Kotelkin

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