Late Cretaceous-Paleogene transform zone between the Eurasian and North American lithospheric plates

Chekhovich, V. D.; Лобковский, Л. И.; Kononov, M. V.; Sheremet, O. G.

doi:10.1134/s0016852115050039

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…We speculate that the rotational-translational movement of the ARWP block was controlled by the F1-F3 fault lineaments (Figure 2d), which probably continue toward the Chukchi Plateau, Chukchi Basin, Mendeleev Ridge, and East Siberian Shelf. Recent mapping of strike-slip faults on the East Siberian shelf supports such a Late Cretaceous to Paleocene tectonic event [Chekhovicha et al, 2015]. We propose that Late Cretaceous to middle Paleocene extension between ARWP and adjacent blocks, including the Mendeleev Ridge, lead not only to the opening of the Makarov Basin but also to the formation of the Marvin Spur Basin by transtension between the Marvin Spur and the Lomonosov Ridge (Figures 2d and 4).…”

Section: Breaking a Lipmentioning

confidence: 62%

Building and breaking a large igneous province: An example from the High Arctic

Døssing¹,

Gaina

Brozena

2017

Geophysical Research Letters

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The genesis of the Amerasia Basin in the Arctic Ocean has been difficult to discern due to overprint of the Cretaceous High‐Arctic Large Igneous Province (HALIP). Based on detailed analysis of bathymetry data, new Arctic magnetic and gravity compilations, and recently published radiometric and seismic data, we present a revised plate kinematic model of the northernmost Amerasia Basin. We show that the smaller Makarov Basin is formed by rifting and seafloor spreading during the latest Cretaceous (to middle Paleocene). The opening progressively migrated into the Alpha Ridge structure, which was the focus of Early‐to‐Middle Cretaceous HALIP formation, causing breakup of the proto‐Alpha Ridge into the present‐day Alpha Ridge and Alpha Ridge West Plateau. We propose that breakup of the Makarov Basin was triggered by extension between the North America and Eurasian plates and possibly North Pacific plate rollback.

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Section: Breaking a Lipmentioning

confidence: 62%

Building and breaking a large igneous province: An example from the High Arctic

Døssing¹,

Gaina

Brozena

2017

Geophysical Research Letters

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“…Our interpretation that the escarpment is part of major strike‐slip crustal boundary is consistent with earlier observations that it is a transform fault located along a small circle from a pole of rotation in the Mackenzie River delta region (Funck et al, ; Grantz et al, ; Shipilov & Lobkovskii, ; Vogt et al, ). Other authors have proposed models in which a major strike‐slip crustal boundary extends from the Chukchi Shelf northward along either Northwind Escarpment (Freeland & Dietz, ; Nikishin et al, ) or within the Chukchi Borderland (Chekhovich et al, ).…”

Section: Discussionmentioning

confidence: 99%

Significance of Northeast‐Trending Features in Canada Basin, Arctic Ocean

Hutchinson

Jackson

Houseknecht

et al. 2017

Geochem Geophys Geosyst

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Synthesis of seismic velocity, potential field, and geological data from Canada Basin and its surrounding continental margins suggests that a northeast‐trending structural fabric has influenced the origin, evolution, and current tectonics of the basin. This structural fabric has a crustal origin, based on the persistence of these trends in upward continuation of total magnetic intensity data and vertical derivative analysis of free‐air gravity data. Three subparallel northeast‐trending features are described. Northwind Escarpment, bounding the east side of the Chukchi Borderland, extends ∼600 km and separates continental crust of Northwind Ridge from high‐velocity transitional crust in Canada Basin. A second, shorter northeast‐trending zone extends ∼300 km in northern Canada Basin and separates inferred continental crust of Sever Spur from magmatically intruded crust of the High Arctic Large Igneous Province. A third northeast‐trending feature, here called the Alaska‐Prince Patrick magnetic lineament (APPL) is inferred from magnetic data and its larger regional geologic setting. Analysis of these three features suggests strike slip or transtensional deformation played a role in the opening of Canada Basin. These features can be explained by initial Jurassic‐Early Cretaceous strike slip deformation (phase 1) followed in the Early Cretaceous (∼134 to ∼124 Ma) by rotation of Arctic Alaska with seafloor spreading orthogonal to the fossil spreading axis preserved in the central Canada Basin (phase 2). In this model, the Chukchi Borderland is part of Arctic Alaska.

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