Dating and correlation of reference seismic horizons in the Laptev Sea Basin

Хорошилова, М.А.; Franke, Dieter; Kirillova, Tatiana A.; Mouly, B.; Nikishin, A. M.

doi:10.3103/s0145875214050032

Cited by 7 publications

(7 citation statements)

References 13 publications

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“…The start of rifting can be considered as a collapse of the collisional orogen [Miller, Verzhbitsky, 2009;. Similar data on ages of the rifts in the Laptev and the East Siberian seas were presented in [Zavarzina, Shkarubo, 2012;Khoroshilova et al, 2014;Petrovskaya, Savishkina, 2014]. A similar concept was suggested in [Sekretov, 2001]on the basis of the first seismic lines in the region.…”

Section: Rift Systems In Shelf Areas Of the Laptev East Siberian Andmentioning

confidence: 65%

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Rift systems of the Russian Eastern Arctic shelf and Arctic deep water basins: link between geological history and geodynamics

Nikishin¹,

Petrov²,

Малышев³

et al. 2017

Geodin. tektonofiz.

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Abstract:In our study, we have developed a new tectonic scheme of the Arctic Ocean, which is based mainly on seismic profiles obtained in the Arctic-2011, Arctic-2012 and Arctic-2014 Projects implemented in Russia. Having interpreted many seismic profiles, we propose a new seismic stratigraphy of the Arctic Ocean. Our main conclusions are drawn from the interpretation of the seismic profiles and the analysis of the regional geological data. The results of our study show that rift systems within the Laptev, the East Siberian and the Chukchi Seas were formed not earlier than Aptian. The geological structure of the Eurasian, Podvodnikov, Toll and Makarov Basins is described in this paper. Having synthesized all the available data on the study area, we propose the following model of the geological history of the Arctic Ocean: 1. The Canada Basin formed till the Aptian (probably, during Hauterivian-Barremian time). 2. During the Aptian-Albian, large-scale tectonic and magmatic events took place, including plume magmatism in the area of the De Long Islands, Mendeleev Ridge and other regions. Continental rifting started after the completion of the Verkhoyansk-Chukotka orogenу, and rifting occurred on the shelf of the Laptev, East Siberian, North Chukchi and South Chukchi basins, and the Chukchi Plateau; simultaneously, continental rifting started in the Podvodnikov and Toll basins. 3. Perhaps the Late Cretaceous rifting continued in the Podvodnikov and Toll basins. 4. At the end of the Late Cretaceous and Paleocene, the Makarov basin was formed by rifting, although local spreading of oceanic crust during its formation cannot be excluded. 5. The Eurasian Basin started to open in the Early Eocene. We, of course, accept that our model of the geological history of the Arctic Ocean, being preliminary and debatable, may need further refining. In this paper, we have shown a link between the continental rift systems on the shelf and the formation history of the Arctic Ocean. Аннотация: На основе российских сейсмических профилей, полученных в рамках проектов Арктика-2011, Арктика-2012 и Арктика-2014, составлена новая тектоническая схема Арктического океана. Приведены ре-зультаты интерпретации многих сейсмических профилей, представлена новая сейсмостратиграфия для Арк-тического океана. Основные выводы сделаны на основе интерпретации сейсмических профилей и на базе анализа региональных геологических данных. Показано, что рифтовые системы в пределах морей Лаптевых, Восточно-Сибирского и Чукотского были образованы не раньше аптского времени. Дано описание геологиче-ского строения бассейнов Евразийского, Подводников, Толля, Макарова и других. На основе синтеза всех дан-ных получена следующая модель истории Арктического океана. 1. Канадский бассейн был образован до апт-ского времени (вероятно, в готериве-барреме). 2. В апте-альбе были крупномасштабные тектонические и магматические события: плюмовый магматизм был в районе поднятия Де-Лонга, на хребте Менделеева и в других областях. Континентальный рифтинг произошел сразу после оконча...

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Section: Rift Systems In Shelf Areas Of the Laptev East Siberian Andmentioning

confidence: 65%

“…In the Laptev Sea Basin, the rift phase is detected in the Paleocene, which preceded the opening of the Eurasian Basin about 56 Ma [Khoroshilova et al, 2014;Nikishin et al, 2014]. Besides, by normal faulting occurred in the Laptev Sea Basin from the Mid Eocene till the Recent time.…”

Section: Rift Systems In Shelf Areas Of the Laptev East Siberian Andmentioning

confidence: 99%

Rift systems of the Russian Eastern Arctic shelf and Arctic deep water basins: link between geological history and geodynamics

Nikishin¹,

Petrov²,

Малышев³

et al. 2017

Geodin. tektonofiz.

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“…The narrow plate boundary between the Eurasia and North American plates, the mid-ocean Gakkel Ridge, continues eastward within the stretched Laptev Sea continental domain. This continental rift system is a complex region of about 900 km width which started prior to the breakup between the Lomonosov Ridge and the Barents/Kara sea shelves (Drachev et al, 1998(Drachev et al, , 2010Sekretov, 2002;Franke et al, 2000Franke et al, , 2001Zavarzina and Shkarubo, 2012;Nikishin et al, 2014Nikishin et al, , 2017Khoroshilova et al, 2014;Mazur et al, 2015). The Laptev Sea continental basement is an amalgamation of terranes whose boundaries and ages are still disputed (Drachev et al, 2010;Drachev, 2016;Nikishin et al, 2014).…”

Section: Regional Tectonic Frameworkmentioning

confidence: 99%

Eurasia Basin and Gakkel Ridge, Arctic Ocean: Crustal asymmetry, ultra-slow spreading and continental rifting revealed by new seismic data

et al. 2018

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High Arctic new seismic data, collected by Russian Federation from 2011 to 2014, and additional geological and geophysical information, are used to interpret the basement and sedimentary structure of central and eastern Eurasia Basin, the Gakkel Ridge, and their transition into the Laptev Sea. We find that significant changes in basement topography occur in Nansen Basin at C20 (43.43 Ma) and in the Amundsen basins at C21 (45.7 Ma), and in both basins at C13 (33 Ma). A long seismic profile, that documents for the first time the structure of conjugate flanks and their margins in the central-eastern Eurasia Basin, confirms that oceanic accretion was asymmetric, with 10% less crust developed in the Amundsen Basin since continental break-up. In the eastern Amundsen Basin, we observe mid-ocean ridge uplift since C13 (33 Ma). We identify four distinct sedimentary packages in the Eurasia Basin: Early to Mid Eocene (c. 56 to 45.7 Ma), Mid Eocene to Early Oligocene (45.7 to 33.2 Ma), Early Oligocene to Early Miocene (33.2 to 19.7) and Early Miocene to Present (19.7 to 0 Ma); they are linked to the oceanic lithosphere age determined from magnetic data. The deepest part of the Gakkel Ridge (5215 m), situated close to the easternmost part of this mid ocean ridge, is imaged for the first time by seismic data that reveals volcanic constructions within the older axial ridges and on the flanks. Gakkel Ridge's asymmetric flanks with shallow, regularly-spaced, and rugged structure, typical to ultra-slow spreading ridges, imply periodicity of tectonic phases. The Khatanga-Lomonosov Fault between Lomonosov Ridge and the Laptev Sea region, is identified on few seismic profiles; kinematic models predict that it may have been active only for a maximum of 10 myr after continental break-up.

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“…АРКТИЧЕСКОГО РЕГИОНА В данной работе мы опираемся на предлагаемую модифицированную схему сейсмостратиграфии Арктического региона [11,27,37,40,46,47,49]. В основу схемы заложена следующая группа данных:…”

Section: обоснование сейсмостратиграфииunclassified

Sedimentary basins of the East Siberian sea and the Chukchi sea region and the adjacent area of Amerasia basin: seismic stratigraphy and stages of geological history

et al. 2019

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The seismic stratigraphy scheme for the shelf basins of the East Siberian Sea and the Chukchi Sea region and the adjacent deep-water part of the Amerasia basin has been developed, and mega-sequences (or tectonostratigraphic units) with proposed age of 125100, 10080, 8066, 6656, 4645, 4534, 200 Ma are distinguished. Zhokhov foredeep basin of the Late Jurassic‒Neocomian age is distinguished between the New Siberia and De Long islands. Three main phases of rifting are identified on the shelves in the region with ages of 125100, 6656 and 4537 Ma. The main phase of continental rifting occurred in the Podvodnikov and Toll basins 125100 Ma. The typical clinoform accumulation of sediments occurred at the edge of the shelf 6620 Ma. We identified three syntectonic epochs of the formation of clinoform complexes with ages of 6645, 4534 and 3420 Ma. The phase of uplifting and compression in the region of Wrangel Island happened 66 Ma. The relatively monotonous tectonic setting with approximately the same thickness of the sedimentary cover began from 20 Ma.

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Dating and correlation of reference seismic horizons in the Laptev Sea Basin

Cited by 7 publications

References 13 publications

Rift systems of the Russian Eastern Arctic shelf and Arctic deep water basins: link between geological history and geodynamics

Rift systems of the Russian Eastern Arctic shelf and Arctic deep water basins: link between geological history and geodynamics

Eurasia Basin and Gakkel Ridge, Arctic Ocean: Crustal asymmetry, ultra-slow spreading and continental rifting revealed by new seismic data

Sedimentary basins of the East Siberian sea and the Chukchi sea region and the adjacent area of Amerasia basin: seismic stratigraphy and stages of geological history

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