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Tectonics, geodynamics and gold mineralization of the eastern margin of the North Asia craton

By
Valeriy Yu. Fridovsky
Valeriy Yu. Fridovsky
Yakut State University, Belinsky St., 58, Yakutsk, 677000, Russia fridovsky@sitc.ru
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Andrei V. Prokopiev
Andrei V. Prokopiev
Diamond and Precious Metal Geology Institute, Siberian Department, Russian Academy of Sciences, Lenin Av., 39, Yakutsk, 677891, Russia prokopiev@diamond.ysn.ru
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Published:
January 01, 2002

Abstract

The North Asia craton is a crustal block including the Siberian platform and marginal fold-and-thrust belts. On the eastern margin of the North Asia craton there is the Verkhoyansk fold-and-thrust belt making up the western part of the Verkhoyansk–Chersky collisional orogenic belt extending for 2000 km from the Laptev Sea in the north to the Sea of Okhotsk in the south. A system of frontal thrusts separates the belt from the platform structures. The frontal part of the belt is mainly made of Carboniferous and Permian terrigenous rocks of palaeodeltas and submarine fans which grade eastward into Triassic and Jurassic sediments of the continental slope. The front of the belt is characterized by thrusting and strike-slip faulting with large horizontal displacements. The largest anticlinoria at the front of the belt have a duplex structure. Formation of the major gold deposits and fold and fault structures, as well as igneous activity in the region, are related to the collision of the North Asia craton with the Kolyma–Omolon superterrane and the Okhotsk terrane in the Late Jurassic–Neocomian. The collision occurred in two stages: the early Neocomian frontal collision and the late Neocomian oblique collision.

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Contents

Geological Society, London, Special Publications

The Timing and Location of Major Ore Deposits in an Evolving Orogen

D. J. Blundell
D. J. Blundell
Royal Holloway, University of London, UK
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F. Neubauer
F. Neubauer
University of Salzburg, Austria
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A. von Quadt
A. von Quadt
ETH-Z, Zurich, Switzerland
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Geological Society of London
Volume
204
ISBN electronic:
9781862394520
Publication date:
January 01, 2002

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