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Late Palaeozoic and Mesozoic evolution of the Amu Darya Basin (Turkmenistan, Uzbekistan)

By
Marie-Françoise Brunet
Marie-Françoise Brunet
Sorbonne Universités, UPMC Université. Paris 06, CNRS, Institut des Sciences de la Terre de Paris (iSTeP), 4 place Jussieu, 75005 Paris, France
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Andrey V. Ershov
Andrey V. Ershov
Geological Faculty, Moscow State University, Vorobievy Gory, 119899 Moscow, Russia
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Maxim V. Korotaev
Maxim V. Korotaev
Geological Faculty, Moscow State University, Vorobievy Gory, 119899 Moscow, Russia
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Vladislav N. Melikhov
Vladislav N. Melikhov
A.P. Karpinsky Russian Geological Research Institute (VSEGEI), Sredny prospect 74, 199106 St Petersburg, Russia
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Eric Barrier
Eric Barrier
Sorbonne Universités, UPMC Université. Paris 06, CNRS, Institut des Sciences de la Terre de Paris (iSTeP), 4 place Jussieu, 75005 Paris, France
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Dmitriy O. Mordvintsev
Dmitriy O. Mordvintsev
Sorbonne Universités, UPMC Université. Paris 06, CNRS, Institut des Sciences de la Terre de Paris (iSTeP), 4 place Jussieu, 75005 Paris, FranceInstitute of Geology and Geophysics of the Academy of Sciences of Republic of Uzbekistan, Olimlar 49, 100041 Tashkent, Uzbekistan
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Irina P. Sidorova
Irina P. Sidorova
Institute of Geology and Geophysics of the Academy of Sciences of Republic of Uzbekistan, Olimlar 49, 100041 Tashkent, Uzbekistan
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Published:
January 01, 2017

Abstract

The Amu Darya Basin (ADB) has been studied primarily for its important hydrocarbon reserves and to a lesser extent for its geodynamic evolution. The ADB is located on the SE portion of the Turan Platform, between the sutures of the Turkestan and Palaeo-Tethys oceans, which closed during the Late Palaeozoic and Early Mesozoic, respectively. Blocks and island arcs accreted to Eurasia during the Palaeozoic form a poorly defined, heterogeneous basement underlying the ADB. They played an important role in shaping its composite structure into variously orientated sub-basins and highs. In this paper, depth–structure and isopach maps, and regional cross-sections, are analysed to unravel the location and origin of the main structural elements and to characterize the subsidence evolution of the ADB. The main tectonic events leading to the formation and evolution of the ADB took place: (1) in the Late Palaeozoic–Early Triassic (back-arc, rollback and extension/strike-slip); (2) from the Middle Triassic to the Triassic–Jurassic boundary (Eo-Cimmerian collision of Gondwana-derived continental blocks with Eurasia); and (3) during the Early–Middle Jurassic (post-collision extensional event). The last part of this evolution reflects shortening and flexure due to Cenozoic collisions to the south. Palaeotectonic maps are used to relate these events to the geodynamics of the Tethyan domain.

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Geological Society

Geological Evolution of Central Asian Basins and the Western Tien Shan Range

M.-F Brunet
M.-F Brunet
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T. McCann
T. McCann
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E. R. Sobel
E. R. Sobel
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Geological Society of London
Volume
427
ISBN electronic:
9781862399594
Publication date:
January 01, 2017

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