Circum-North Pacific tectonostratigraphic terrane map

Nokleberg, Warren J.; Parfenov, Leonid M.; Monger, J. W. H.; Baranov, Boris B.; Byalobzhesky, Stanislav G.; Bundtzen, Thomas K.; Feeney, Tracey D.; Fujita, Kazuya; Gordey, Steven P.; Grantz, Arthur; Ханчук, А. И.; Natal’in, Boris A.; Natapov, Lev M.; Norton, Ian O.; Patton, W.W.; Plafker, George; Scholl, David W.; Соколов, С. Д.; Sosunov, Gleb M.; Stone, David B.; Tabor, R.W.; Tsukanov, Nickolai V.; Vallier, T.L.; Wakita, Koji

doi:10.3133/ofr94714

Cited by 49 publications

(56 citation statements)

References 113 publications

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“…Located along the southeastern boundary of the SAS, the Yarakvaam terrane comprises part of the Alazeya-Oloy foldand-thrust belt (Parfenov et al, 1993;Nokleberg et al, 1994). This terrane is composed of sedimentary and volcanic rocks of island arc affinity of Upper Paleozoic-Lower Cretaceous age (Til'man et al, 1977;Parfenov, 1984;Parfenov et al, 1993) and of the Vurguveem and Aluchin ophiolites.…”

Section: The Yarakvaam Terranementioning

confidence: 99%

“…The age of the South Anyui oceanic basin was generally considered to be Late Jurassic-Early Cretaceous (e.g., Til'man et al, 1977;Natal'in, 1984;Parfenov, 1984;Shapiro and Ganelin, 1988;Chekhov, 2000;Nokleberg et al, 1994Nokleberg et al, , 1998. These concepts were based on faunal determinations from clastic rocks that included horizons of basalts and cherts.…”

Section: Geological Frameworkmentioning

confidence: 99%

“…The Vurguveem peridotite-gabbro massif (Gromadnensky terrane after Parfenov et al, 1993;Nokleberg et al, 1994;Gromadnensky-Vurguveem massif after Natal'in, 1984) is dominated by layered gabbro and gabbro-norite with subordinate amounts of troctolite, olivine gabbro, and lenticular bodies of peridotite (Ganelin and Silantyev, 2004). In the western part of the massif, there are plagiogranite bodies.…”

Section: The Yarakvaam Terranementioning

confidence: 99%

“…First identified by S. D. Sokolov (Parfenov et al, 1993;Nokleberg et al, 1994), the Velmai terrane is comprised of ultramafics, gabbro, plagiogranite, and terrigenous, siliceous, and volcanic deposits widespread south of the Kolyuchinskaya Guba and north of Cross Bay in Chukotka Peninsula (Fig. 1).…”

Section: Velmai Terranementioning

confidence: 99%

“…The South Anyui terrane (Parfenov et al, 1993;Nokleberg et al, 1994Nokleberg et al, , 1998) is identified as an accretionary wedge terrane. Aptian and Albian volcanic and sedimentary rocks (Shekhovtsov and Glotov, 2001) of the Kameshkov, Ainakhkurgen and Nutesyn depressions are the overlap sequences (Fig.…”

Section: South Anyui Terranementioning

confidence: 99%

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South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events

Соколов

Bondarenko²,

Layer

et al. 2009

Stephan Mueller Spec. Publ. Ser.

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Abstract. Geochronologic and structural data from the terranes of the South Anyui suture zone record a protracted deformational history before, during and after an Early Cretaceous collision of the passive margin of the Chukotka-Arctic Alaska continental block with the active continental margin of the North Asian continent. Preceding this collision, the island arc complexes of the Yarakvaam terrane on the northern margin of the North Asian craton record Early Carboniferous to Neocomian ages in ophiolite, sedimentary, and volcanic rocks. Triassic to Jurassic amphibolites constrain the timing of subduction and intraoceanic deformation along this margin. The protracted (Neocomian to Aptian) collision of the Chukotka passive margin with the North Asian continent is preserved in a range of structural styles including first north verging folding, then south verging folding, and finally late collisional dextral strike slip motions which likely record a change from orthogonal collision to oblique collision. Due to this collision, the southern passive margin of Chukotka was overthrust by tectonic nappes composed of tectono-stratigraphic complexes of the South Anyui terrane. Greenschists with ages of 115-119 Ma are related to the last stages of this collision. The postcollisional orogenic stage (Albian to Cenomanian) is characterized by sinistral strike slip faults and an extensional environment.

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Section: The Yarakvaam Terranementioning

confidence: 99%

Section: Geological Frameworkmentioning

confidence: 99%

Section: The Yarakvaam Terranementioning

confidence: 99%

Section: Velmai Terranementioning

confidence: 99%

Section: South Anyui Terranementioning

confidence: 99%

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South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events

Соколов

Bondarenko²,

Layer

et al. 2009

Stephan Mueller Spec. Publ. Ser.

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Gravity flow deposits in Mesozoic sediments of Chukotka microplate (North‐East Russia)

Tuchkova,

Vatrushkina,

Sokolov

2024

The Depositional Record

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In the Mesozoic succession of the Anyui–Chukotka fold system (North‐East Russia), five stratigraphic intervals were recognised that have an abundance of gravity flow deposits. These are the Olenekian (Lower Triassic), Upper Carnian, Upper Norian, Oxfordian–Kimmeridgian and Valanginian. The Triassic gravity flow deposits formed on the south‐facing, passive margin of the Chukotka microplate and consist of greywackes and lithic arenites. Palaeocurrent data indicate that the flows were directed towards the south‐east. The Olenekian gravity flow units consist of clast‐rich sandstone deposited on the continental slope, and clast‐poor sandstone deposited at the base of the slope. Upper Carnian mud‐poor sandstones were deposited at the base of the slope and the Norian thin‐bedded turbidites were upper to mid‐slope deposits. The continental margin was affected by tectonism and was uplifted in the latest Triassic–earliest Jurassic, possibly due to the initiation of the southward translation of the Arctic Alaska–Chukotka microplate. Following an Early–Middle Jurassic uplift of the area, sedimentation resumed in the Late Jurassic and earliest Cretaceous. Several syn‐orogenic depressions (Rauchua, Pegtymel, Pevek, Myrgovaam and Kytepveem) developed on the south‐western margin of the Chukotka microplate, and deposition in these basins included gravity flow deposits at various times. In both the Oxfordian–Kimmeridgian and Valanginian successions, gravity flow deposits included arkosic and subarkosic sandstones with a northern source area of granitoid complexes and deformed Triassic strata. The intervening Tithonian–Berriasian gravity flow deposits consisted mainly of thin‐bedded turbidites. These sediments had a southern source, which included a volcanic arc that had accreted to the southern margin of the Chukotka microplate.

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Early Eocene Arc–Continent Collision in Kamchatka, Russia: Structural Evolution and Geodynamic Model

Konstantinovskaya

2011

Frontiers in Earth Sciences

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Circum-North Pacific tectonostratigraphic terrane map

Cited by 49 publications

References 113 publications

South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events

South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events

Gravity flow deposits in Mesozoic sediments of Chukotka microplate (North‐East Russia)

Early Eocene Arc–Continent Collision in Kamchatka, Russia: Structural Evolution and Geodynamic Model

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