Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area

M. M. BUSLOV*, H. GENG, A. V. TRAVIN, D. OTGONBAATAR, A. V. KULIKOVA, Chen MING, G. STIJN, N. N. SEMAKOV, E. S. RUBANOVA, M. A. ABILDAEVA, E. E. VOITISHEK, D. A. TROFIMOVA

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)Researchpeer-review

46 Citations (Scopus)

Abstract

Packages of Late Paleozoic tectonic nappes and associated major NE-trending strike-slip faults are widely developed in the Altai-Sayan folded area. Fragments of early deformational phases are preserved within the Late Paleozoic allochthons and autochthons. Caledonian fold-nappe and strike-slip structures, as well as accompanying metamorphism and granitization in the region, are typical of the EW-trending suture-shear zone separating the composite Kazakhstan-Baikal continent and Siberia. In the Gorny Altai region, the Late Paleozoic nappes envelop the autochthon, which contains a fragment of the Vendian-Cambrian Kuznetsk-Altai island arc with accretionary wedges of the Biya-Katun' and Kurai zones. The fold-nappe deformations within the latter zones occurred during the Late Cambrian (Salairian) and can thus be considered Salairian orogenic phases. The Salairian fold-nappe structure is stratigraphically overlain by a thick (up to 15 km) well-stratified rock unit of the Anyui-Chuya zone, which is composed of Middle Cambrian-Early Ordovician fore-arc basin rocks unconformably overlain by Ordovician-Early Devonian carbonate-terrigenous passive-margin sequences. These rocks are crosscut by intrusions and overlain by a volcanosedimentary unit of the Devonian active margin. The top of the section is marked by Famennian-Visean molasse deposits onlapping onto Devonian rocks. The molasse deposits accumulated above a major unconformity reflects a major Late Paleozoic phase of folding, which is most pronounced in deformations at the edges of the autochthon, nearby the Kaim, Charysh-Terekta, and Teletskoe-Kurai fault nappe zones. Upper Carboniferous coal-bearing molasse deposits are preserved as tectonic wedges within the Charysh-Terekta and Teletskoe-Kurai fault nappe zones.Detrital zircon ages from Middle Cambrian-Early Ordovician rocks of the Anyui-Chuya fore-arc zone indicate that they were primarily derived from Upper Neoproterozoic-Cambrian igneous rocks of the Kuznetsk-Altai island arc or, to a lesser extent, from an Ordovician-Early Devonian passive margin. A minor age population is represented by Paleoproterozoic grains, which was probably sourced from the Siberian craton. Zircons from the Late Carboniferous molasse deposits have much wider age spectra, ranging from Middle Devonian-Early Carboniferous to Late Ordovician-Early Silurian, Cambrian-Early Ordovician, Mesoproterozoic, Early-Middle Proterozoic, and early Paleoproterozoic. These ages are consistent with the ages of igneous and metamorphic rocks of the composite Kazakhstan-Baikal continent, which includes the Tuva-Mongolian island arc with accreted Gondwanan blocks, and a Caledonian suture-shear zone in the north. Our results suggest that the Altai-Sayan region is represented by a complex aggregate of units of different geodynamic affinity. On the one hand, these are continental margin rocks of western Siberia, containing only remnants of oceanic crust embedded in accretionary structures. On the other hand, they are represented by the Kazakhstan-Baikal continent composed of fragments of Gondwanan continental blocks. In the Early-Middle Paleozoic, they were separated by the Ob'-Zaisan oceanic basin, whose fragments are preserved in the Caledonian suture-shear zone. The movements during the Late Paleozoic occurred along older, reactivated structures and produced the large intracontinental Central Asian orogen, which is interpreted to be a far-field effect of the colliding East European, Siberian, and Kazakhstan-Baikal continents.

Original languageEnglish
Pages (from-to)1250-1271
Number of pages22
JournalRussian Geology and Geophysics
Volume54
Issue number10
Early online date26 Sep 2013
DOIs
Publication statusPublished - Oct 2013
Externally publishedYes

Fingerprint

folds (geology)
geodynamics
nappe
tectonics
Kazakhstan
Ordovician
molasse
Paleozoic
rocks
continents
island arcs
suture zone
Caledonian orogeny
deposits
fragments
autochthon
rock
island arc
shear zone
margins

Keywords

  • Accretion
  • Altai-Sayan folded area
  • Caledonides
  • Central Asian folded area
  • Collision
  • Gondwana
  • Gorny Altai
  • Hercynides
  • Overthrust nappe
  • Paleo-Asian Ocean
  • Salairides
  • Siberian continent
  • Strike-slips
  • Subduction

Cite this

BUSLOV, M. M., GENG, H., TRAVIN, A. V., OTGONBAATAR, D., KULIKOVA, A. V., MING, C., ... TROFIMOVA, D. A. (2013). Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area. Russian Geology and Geophysics, 54(10), 1250-1271. https://doi.org/10.1016/j.rgg.2013.09.009
BUSLOV, M. M. ; GENG, H. ; TRAVIN, A. V. ; OTGONBAATAR, D. ; KULIKOVA, A. V. ; MING, Chen ; STIJN, G. ; SEMAKOV, N. N. ; RUBANOVA, E. S. ; ABILDAEVA, M. A. ; VOITISHEK, E. E. ; TROFIMOVA, D. A. / Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area. In: Russian Geology and Geophysics. 2013 ; Vol. 54, No. 10. pp. 1250-1271.
@article{0f52e9cd50204fb890ad8e10d6f4dfdb,
title = "Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area",
abstract = "Packages of Late Paleozoic tectonic nappes and associated major NE-trending strike-slip faults are widely developed in the Altai-Sayan folded area. Fragments of early deformational phases are preserved within the Late Paleozoic allochthons and autochthons. Caledonian fold-nappe and strike-slip structures, as well as accompanying metamorphism and granitization in the region, are typical of the EW-trending suture-shear zone separating the composite Kazakhstan-Baikal continent and Siberia. In the Gorny Altai region, the Late Paleozoic nappes envelop the autochthon, which contains a fragment of the Vendian-Cambrian Kuznetsk-Altai island arc with accretionary wedges of the Biya-Katun' and Kurai zones. The fold-nappe deformations within the latter zones occurred during the Late Cambrian (Salairian) and can thus be considered Salairian orogenic phases. The Salairian fold-nappe structure is stratigraphically overlain by a thick (up to 15 km) well-stratified rock unit of the Anyui-Chuya zone, which is composed of Middle Cambrian-Early Ordovician fore-arc basin rocks unconformably overlain by Ordovician-Early Devonian carbonate-terrigenous passive-margin sequences. These rocks are crosscut by intrusions and overlain by a volcanosedimentary unit of the Devonian active margin. The top of the section is marked by Famennian-Visean molasse deposits onlapping onto Devonian rocks. The molasse deposits accumulated above a major unconformity reflects a major Late Paleozoic phase of folding, which is most pronounced in deformations at the edges of the autochthon, nearby the Kaim, Charysh-Terekta, and Teletskoe-Kurai fault nappe zones. Upper Carboniferous coal-bearing molasse deposits are preserved as tectonic wedges within the Charysh-Terekta and Teletskoe-Kurai fault nappe zones.Detrital zircon ages from Middle Cambrian-Early Ordovician rocks of the Anyui-Chuya fore-arc zone indicate that they were primarily derived from Upper Neoproterozoic-Cambrian igneous rocks of the Kuznetsk-Altai island arc or, to a lesser extent, from an Ordovician-Early Devonian passive margin. A minor age population is represented by Paleoproterozoic grains, which was probably sourced from the Siberian craton. Zircons from the Late Carboniferous molasse deposits have much wider age spectra, ranging from Middle Devonian-Early Carboniferous to Late Ordovician-Early Silurian, Cambrian-Early Ordovician, Mesoproterozoic, Early-Middle Proterozoic, and early Paleoproterozoic. These ages are consistent with the ages of igneous and metamorphic rocks of the composite Kazakhstan-Baikal continent, which includes the Tuva-Mongolian island arc with accreted Gondwanan blocks, and a Caledonian suture-shear zone in the north. Our results suggest that the Altai-Sayan region is represented by a complex aggregate of units of different geodynamic affinity. On the one hand, these are continental margin rocks of western Siberia, containing only remnants of oceanic crust embedded in accretionary structures. On the other hand, they are represented by the Kazakhstan-Baikal continent composed of fragments of Gondwanan continental blocks. In the Early-Middle Paleozoic, they were separated by the Ob'-Zaisan oceanic basin, whose fragments are preserved in the Caledonian suture-shear zone. The movements during the Late Paleozoic occurred along older, reactivated structures and produced the large intracontinental Central Asian orogen, which is interpreted to be a far-field effect of the colliding East European, Siberian, and Kazakhstan-Baikal continents.",
keywords = "Accretion, Altai-Sayan folded area, Caledonides, Central Asian folded area, Collision, Gondwana, Gorny Altai, Hercynides, Overthrust nappe, Paleo-Asian Ocean, Salairides, Siberian continent, Strike-slips, Subduction",
author = "BUSLOV, {M. M.} and H. GENG and TRAVIN, {A. V.} and D. OTGONBAATAR and KULIKOVA, {A. V.} and Chen MING and G. STIJN and SEMAKOV, {N. N.} and RUBANOVA, {E. S.} and ABILDAEVA, {M. A.} and VOITISHEK, {E. E.} and TROFIMOVA, {D. A.}",
year = "2013",
month = "10",
doi = "10.1016/j.rgg.2013.09.009",
language = "English",
volume = "54",
pages = "1250--1271",
journal = "Russian Geology and Geophysics",
issn = "1068-7971",
publisher = "Elsevier",
number = "10",

}

BUSLOV, MM, GENG, H, TRAVIN, AV, OTGONBAATAR, D, KULIKOVA, AV, MING, C, STIJN, G, SEMAKOV, NN, RUBANOVA, ES, ABILDAEVA, MA, VOITISHEK, EE & TROFIMOVA, DA 2013, 'Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area', Russian Geology and Geophysics, vol. 54, no. 10, pp. 1250-1271. https://doi.org/10.1016/j.rgg.2013.09.009

Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area. / BUSLOV, M. M.; GENG, H.; TRAVIN, A. V.; OTGONBAATAR, D.; KULIKOVA, A. V.; MING, Chen; STIJN, G.; SEMAKOV, N. N.; RUBANOVA, E. S.; ABILDAEVA, M. A.; VOITISHEK, E. E.; TROFIMOVA, D. A.

In: Russian Geology and Geophysics, Vol. 54, No. 10, 10.2013, p. 1250-1271.

Research output: Journal PublicationsJournal Article (refereed)Researchpeer-review

TY - JOUR

T1 - Tectonics and geodynamics of Gorny Altai and adjacent structures of the Altai-Sayan folded area

AU - BUSLOV, M. M.

AU - GENG, H.

AU - TRAVIN, A. V.

AU - OTGONBAATAR, D.

AU - KULIKOVA, A. V.

AU - MING, Chen

AU - STIJN, G.

AU - SEMAKOV, N. N.

AU - RUBANOVA, E. S.

AU - ABILDAEVA, M. A.

AU - VOITISHEK, E. E.

AU - TROFIMOVA, D. A.

PY - 2013/10

Y1 - 2013/10

N2 - Packages of Late Paleozoic tectonic nappes and associated major NE-trending strike-slip faults are widely developed in the Altai-Sayan folded area. Fragments of early deformational phases are preserved within the Late Paleozoic allochthons and autochthons. Caledonian fold-nappe and strike-slip structures, as well as accompanying metamorphism and granitization in the region, are typical of the EW-trending suture-shear zone separating the composite Kazakhstan-Baikal continent and Siberia. In the Gorny Altai region, the Late Paleozoic nappes envelop the autochthon, which contains a fragment of the Vendian-Cambrian Kuznetsk-Altai island arc with accretionary wedges of the Biya-Katun' and Kurai zones. The fold-nappe deformations within the latter zones occurred during the Late Cambrian (Salairian) and can thus be considered Salairian orogenic phases. The Salairian fold-nappe structure is stratigraphically overlain by a thick (up to 15 km) well-stratified rock unit of the Anyui-Chuya zone, which is composed of Middle Cambrian-Early Ordovician fore-arc basin rocks unconformably overlain by Ordovician-Early Devonian carbonate-terrigenous passive-margin sequences. These rocks are crosscut by intrusions and overlain by a volcanosedimentary unit of the Devonian active margin. The top of the section is marked by Famennian-Visean molasse deposits onlapping onto Devonian rocks. The molasse deposits accumulated above a major unconformity reflects a major Late Paleozoic phase of folding, which is most pronounced in deformations at the edges of the autochthon, nearby the Kaim, Charysh-Terekta, and Teletskoe-Kurai fault nappe zones. Upper Carboniferous coal-bearing molasse deposits are preserved as tectonic wedges within the Charysh-Terekta and Teletskoe-Kurai fault nappe zones.Detrital zircon ages from Middle Cambrian-Early Ordovician rocks of the Anyui-Chuya fore-arc zone indicate that they were primarily derived from Upper Neoproterozoic-Cambrian igneous rocks of the Kuznetsk-Altai island arc or, to a lesser extent, from an Ordovician-Early Devonian passive margin. A minor age population is represented by Paleoproterozoic grains, which was probably sourced from the Siberian craton. Zircons from the Late Carboniferous molasse deposits have much wider age spectra, ranging from Middle Devonian-Early Carboniferous to Late Ordovician-Early Silurian, Cambrian-Early Ordovician, Mesoproterozoic, Early-Middle Proterozoic, and early Paleoproterozoic. These ages are consistent with the ages of igneous and metamorphic rocks of the composite Kazakhstan-Baikal continent, which includes the Tuva-Mongolian island arc with accreted Gondwanan blocks, and a Caledonian suture-shear zone in the north. Our results suggest that the Altai-Sayan region is represented by a complex aggregate of units of different geodynamic affinity. On the one hand, these are continental margin rocks of western Siberia, containing only remnants of oceanic crust embedded in accretionary structures. On the other hand, they are represented by the Kazakhstan-Baikal continent composed of fragments of Gondwanan continental blocks. In the Early-Middle Paleozoic, they were separated by the Ob'-Zaisan oceanic basin, whose fragments are preserved in the Caledonian suture-shear zone. The movements during the Late Paleozoic occurred along older, reactivated structures and produced the large intracontinental Central Asian orogen, which is interpreted to be a far-field effect of the colliding East European, Siberian, and Kazakhstan-Baikal continents.

AB - Packages of Late Paleozoic tectonic nappes and associated major NE-trending strike-slip faults are widely developed in the Altai-Sayan folded area. Fragments of early deformational phases are preserved within the Late Paleozoic allochthons and autochthons. Caledonian fold-nappe and strike-slip structures, as well as accompanying metamorphism and granitization in the region, are typical of the EW-trending suture-shear zone separating the composite Kazakhstan-Baikal continent and Siberia. In the Gorny Altai region, the Late Paleozoic nappes envelop the autochthon, which contains a fragment of the Vendian-Cambrian Kuznetsk-Altai island arc with accretionary wedges of the Biya-Katun' and Kurai zones. The fold-nappe deformations within the latter zones occurred during the Late Cambrian (Salairian) and can thus be considered Salairian orogenic phases. The Salairian fold-nappe structure is stratigraphically overlain by a thick (up to 15 km) well-stratified rock unit of the Anyui-Chuya zone, which is composed of Middle Cambrian-Early Ordovician fore-arc basin rocks unconformably overlain by Ordovician-Early Devonian carbonate-terrigenous passive-margin sequences. These rocks are crosscut by intrusions and overlain by a volcanosedimentary unit of the Devonian active margin. The top of the section is marked by Famennian-Visean molasse deposits onlapping onto Devonian rocks. The molasse deposits accumulated above a major unconformity reflects a major Late Paleozoic phase of folding, which is most pronounced in deformations at the edges of the autochthon, nearby the Kaim, Charysh-Terekta, and Teletskoe-Kurai fault nappe zones. Upper Carboniferous coal-bearing molasse deposits are preserved as tectonic wedges within the Charysh-Terekta and Teletskoe-Kurai fault nappe zones.Detrital zircon ages from Middle Cambrian-Early Ordovician rocks of the Anyui-Chuya fore-arc zone indicate that they were primarily derived from Upper Neoproterozoic-Cambrian igneous rocks of the Kuznetsk-Altai island arc or, to a lesser extent, from an Ordovician-Early Devonian passive margin. A minor age population is represented by Paleoproterozoic grains, which was probably sourced from the Siberian craton. Zircons from the Late Carboniferous molasse deposits have much wider age spectra, ranging from Middle Devonian-Early Carboniferous to Late Ordovician-Early Silurian, Cambrian-Early Ordovician, Mesoproterozoic, Early-Middle Proterozoic, and early Paleoproterozoic. These ages are consistent with the ages of igneous and metamorphic rocks of the composite Kazakhstan-Baikal continent, which includes the Tuva-Mongolian island arc with accreted Gondwanan blocks, and a Caledonian suture-shear zone in the north. Our results suggest that the Altai-Sayan region is represented by a complex aggregate of units of different geodynamic affinity. On the one hand, these are continental margin rocks of western Siberia, containing only remnants of oceanic crust embedded in accretionary structures. On the other hand, they are represented by the Kazakhstan-Baikal continent composed of fragments of Gondwanan continental blocks. In the Early-Middle Paleozoic, they were separated by the Ob'-Zaisan oceanic basin, whose fragments are preserved in the Caledonian suture-shear zone. The movements during the Late Paleozoic occurred along older, reactivated structures and produced the large intracontinental Central Asian orogen, which is interpreted to be a far-field effect of the colliding East European, Siberian, and Kazakhstan-Baikal continents.

KW - Accretion

KW - Altai-Sayan folded area

KW - Caledonides

KW - Central Asian folded area

KW - Collision

KW - Gondwana

KW - Gorny Altai

KW - Hercynides

KW - Overthrust nappe

KW - Paleo-Asian Ocean

KW - Salairides

KW - Siberian continent

KW - Strike-slips

KW - Subduction

UR - http://www.scopus.com/inward/record.url?scp=84884542964&partnerID=8YFLogxK

U2 - 10.1016/j.rgg.2013.09.009

DO - 10.1016/j.rgg.2013.09.009

M3 - Journal Article (refereed)

VL - 54

SP - 1250

EP - 1271

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 10

ER -