The western part of the West Siberian petroleum megabasin: geologic history and structure of the basement

Ivanov, K. S.; Koroteev, V. A.; Печеркин, М Ф; Fedorov, Yu. N.; Erokhin, Yu. V.

doi:10.1016/j.rgg.2009.03.010

Cited by 18 publications

(12 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This tectonism was the culmination associated with the closure of the Neoproterozoic-Palaeozoic Paleoasian Ocean and assemblage of the Pangaea Supercontinent. Presently, rocks affected by the Uralian compression are exposed in the Ural Mountains and in the Taimyr Peninsula, while a major part of this tectonic assemblage is deeply buried under the Mesozoic West Siberian Basin and can only be characterized by deep exploratory wells [54,55].…”

Section: Late Palaeozoic Uralian and Taimyr Fold Beltsmentioning

confidence: 99%

Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

View full text Add to dashboard Cite

The vast Eurasian Arctic epicontinental shelf and adjoining mainland has a very complex structure and tectonic history as a result of a series of continent-continent collisions, accretion of terranes and crustal extension phases during Neoproterozoic and Phanerozoic times. Significant parts of major Eurasian fold belts extend far north into the Arctic below thick infill of post-orogenic sedimentary basins, where their architecture remains highly disputed. Large Eurasian Arctic sedimentary basins formed as a result of orogenic collapse, back-arc extension, or intracontinental extension associated with the breakup of the Laurussia, Laurasia, Pangea and Eurasia supercontinents. There are over 40 sedimentary basins of variable age and genesis which are thought to bear significant undiscovered hydrocarbon resources in the region. This article reviews the current state-of-knowledge of Eurasian Arctic tectonics and highlights questions that remain to be addressed. The overall focus is on the Russian sector of the Arctic being less known to a broad geoscience community.

show abstract

Section: Late Palaeozoic Uralian and Taimyr Fold Beltsmentioning

confidence: 99%

Fold belts and sedimentary basins of the Eurasian Arctic

Drachev¹

2016

Arktos

View full text Add to dashboard Cite

show abstract

“…To the north‐west, and to both sides perpendicular to its strike, the KTFZ is overlain by the Meso–Cenozoic cover of the West Siberian Basin (WSB). Available drill‐hole data confirm the wide distribution of Devonian–Carboniferous volcanic and sedimentary units, as well as Carboniferous granites in the WSB folded basement (Isaev, ; Ivanov, Erokhin, Ponomarev, Pogromskaya, & Berzin, ; Ivanov, Koroteev, Pecherkin, Fedorov, & Erokhin, ).…”

Section: Geological Settingmentioning

confidence: 77%

“…The first hypothesis is less likely due to the very rare occurrence of “Siberian” zircons with ages of 2.0–1.8 Ga in the samples (four grains in the each detrital sample). The third possibility is also unlikely, because in the most proximal part of the West Siberian Basin, its folded basement mainly consists of Late Palaeozoic sediments and magmatic rocks, and there is little or no evidence for the existence of Precambrian massifs in this location (Cherepanova, Artemieva, Thybo, & Chemia, ; Isaev, ; Ivanov et al, ; Ivanov et al, ; Ivanov, Fedorov, Ronkin, & Erokhin, ; Kungurtsev et al, ; Yolkin et al, ). Hence, the most probable sources of the Neoproterozoic zircons are the Tuva–Mongolia and/or Atai–Mongolia microcontinents.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Tectonic history of the Kolyvan–Tomsk folded zone (KTFZ), Russia: Insight from zircon U/Pb geochronology and Nd isotopes

et al. 2019

View full text Add to dashboard Cite

The Kolyvan–Tomsk folded zone (KTFZ) represents part of the Central Asian Orogenic Belt (CAOB). The KTFZ is mainly composed of detrital Late Palaeozoic sedimentary deposits, with minor intrusions. Detrital zircon geochronology on the Upper Devonian to Lower Permian sedimentary sequences of the KTFZ and the associated Gorlovo foreland basin yields four age peaks, reflecting the magmatic events in the source terranes. These events consist of (a) a minor Neoproterozoic peak (0.9–0.7 Ga), (b) a significant Early Palaeozoic peak (550–460 Ma), with a maximum at 500 Ma, and two well‐defined Late Palaeozoic peaks during (c) the Middle–Late Devonian (385–360 Ma) and (d) the Carboniferous–Early Permian (360–280 Ma), with a maximum at 320 Ma. Older zircons (>1 Ga) are quite rare in the sampled sedimentary sequences. Slightly negative εNd values and associated relatively young Nd model ages were obtained (εNd(T) = −0.78, T (DM) ~1.1 Ga for Upper Devonian sandstones, εNd(T) = −1.1, T (DM) ~1.1 Ga for Lower Permian sandstones), suggesting only minor contribution of ancient continental crust to the main sedimentary units of the KTFZ. All intrusive and volcaniclastic rocks on the contrary are characterized by high positive εNd(T) values in the range of 3.78–6.86 and a Late Precambrian model age (T (DM) = 581–916 Ma), which corroborates its juvenile nature and an important depleted mantle component in their source. The oldest unit of the KTFZ, the Bugotak volcanic complex formed at the Givetian–Early Frasnian transition, at about 380 Ma. Upper Devonian detrital deposits of the KTFZ were formed in the Early Palaeozoic accretion belt of the Siberian continent and specifically in a passive continental margin environment. Deposits of the Gorlovo foreland basin, adjoining the KTFZ, were accumulated as a result of erosion of the Carboniferous–Early Permian volcanic rocks, which are now buried under the Meso–Cenozoic sedimentary cover of the West Siberian Basin. The magmatic events, recorded in the KTFZ zircon data, correspond to the most significant magmatic stages that affected the western part of the CAOB as a whole.

show abstract

“…The compositions of the studied metamorphic rocks from the Shaimsk-Kuznetsovsk meganticlinorium form a narrow range of values and fall into the field of greywackes and melanowackes. It is likely that the greywackes, whose strata are likely to have formed under erosion of ophiolitic rocks described in the region [2], considerably served as a substrate for them. This fact is also proved because in general the zircons from both samples have typical magmatic appearance and do not exhibit any rounding (transfer in the fragmental composition).…”

mentioning

confidence: 99%

Nature and age of metamorphic rocks from the basement of the West Siberian megabasin (according to U-Pb isotopic dates)

et al. 2012

View full text Add to dashboard Cite

321The Shaimsk oil and gas bearing region located in the east of the Khanty-Mansiisk autonomous district is the oldest area of hydrocarbon production in West ern Siberia, on which much geological material has been accumulated. Despite its age, many issues of the geological structure, material composition, and the age of rock complexes (especially as concerns the Pre Jurassic basement) still remain unsolved.The surface of the Pre Jurassic basement within the Shaimsk region lies at the depth of 1.4-1.7 km, the basement rocks are uncovered by numerous wells. Based on complex geological-geophysical research and mapping of the big segments of the territory, we constructed [1, 2, etc.] a detailed geological map of the Pre Jurassic basement for the western part of the West Siberian plate and showed that the Paleozoic geody namic history of the region ended as a result of a colli sion accompanied by tectonic clustering, metamor phism, granite intrusion, and origination of a newly formed crust of the continental type. The geological structure of the Pre Jurassic basement is represented by two major structures: the Danilovsk graben com posed of Triassic kainotype basalts [1] and the Shaimsk Kuznetsovsk meganticlinorium shaped like a chain of monzodiorite granosyenite rocks and their metamorphic schist margins. The dominant among the metamorphic rocks are quartz-sericitic, sericitequartzitic, albite-chlorite-quartzitic, and graphitequartz schists, which were formed under conditions of a greenschist facie and less frequently, the lower amphibolite facie. Previously it was recorded [3] that the metamorphic rocks uncovered by wells in the axial zone of the Shaimsk megalithic bank are represented by quartz-biotite, quartz-amphibolic, epidotebiotite, amphibole-cordierite, graphitic, and other schists. According to [4], a part of crystal schists from the Shaimsk elevation refers to the Ordovician period, and some schists and phyllites are of Silurian age. In [3] it was assumed that a part of the metamorphic rocks is Early Silurian, and the majority of metamor phic rocks were considered Late Precambrian forma tions. In [5] phyllites and phyllite like schists were referred to the Silurian-Lower Devonian period; and the rest of the schists, to the Ordovician. Paper [6] pre sents the dates for five ages of the schists determined by the K-Ar method (286, 310, 314, 328, and 355 Ma) and states that the ages obtained may be underesti mated because of the recurring warming during the period of Late Paleozoic folding. These metamorphic strata that compose anticlinoria cores are considered the most ancient regional deposits in the available pat terns of definition and correlation of the formations in the West Siberian basement [7]. According to [8,9], the basements of the sections of the Sherkalinsk, Shaimsk, and other regions comprise metamorphic strata of poorly defined Precambrian age. It was widely believed that the metamorphic rocks from the green schist facie were of the Riphean age and the more Abstract-The SHRIMP II zircon U-Pb da...

show abstract

The western part of the West Siberian petroleum megabasin: geologic history and structure of the basement

Cited by 18 publications

References 9 publications

Fold belts and sedimentary basins of the Eurasian Arctic

Fold belts and sedimentary basins of the Eurasian Arctic

Tectonic history of the Kolyvan–Tomsk folded zone (KTFZ), Russia: Insight from zircon U/Pb geochronology and Nd isotopes

Nature and age of metamorphic rocks from the basement of the West Siberian megabasin (according to U-Pb isotopic dates)

Contact Info

Product

Resources

About