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Book Chapter

Copper Sandstone and Schist Formations

By
A.M. Lurje
A.M. Lurje
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Published:
January 01, 1988

Abstract

Copper sandstone and schist deposits are developed in the Igarsky region (cf Figure 1, p.2, 3) at the northwestern rim of the Siberian platform. The terrain consists of a pre-Vendian north-south trending preorogenic trough and the Igarsky Baikal-age horst. Small inter-montane basins extend from the main trough southwest into the Igarsky horst. The junction of uplifted blocks of the Igarsky horst with the pre-orogenic trough and the inter-montane basins occurs along faults which form the western border of the Siberian platform (Figure 45, p.192, 193).

The sedimentary strata belong to three structural levels, which correspond to three stages in the geological development: the concluding geosynclinal (early-middle Riphean) stage; the transitional or early platformal (late Riphean) stage; and the platformal (Vendian-Cambrian) stage. The first stage includes the intensely dislocated Ludovsky and Gubinsky strata, these occur in uplifted blocks of the basement. The transitional stage is represented by the Chernorechensky and Izluchinsky suites, which occur in the pre-orogenic trough and the intermontane basins. Peneplaned surfaces of these deposits are transgressed by Vendian-Cambrian marine (essentially carbonate) deposits of the Sukharikhinsky suite, which represent the beginning of platform development.

The present day structure of the Igarsky region formed as a result of Hercynian orogenesis and Mesozoic-Cenozoic activity. It shows an inherited development, for example, the cores of the anticlines coincide with uplifted, wedge-like Baikal-aged blocks, while the synclines coincide with pre-Vendian depressions. The Kulyumbijsky-Sukharikhinsky and Chernorechensky anticlines are the largest; they are separated by the Ust’-Gorbiachinsky (in the north) and Shumninsky (in the)

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Special Publication

Geology and Metallogeny of Sulfide Deposits Noril’sk Region U.S.S.R.

O.A. Duzhikov
O.A. Duzhikov
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V.V. Distler
V.V. Distler
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B. M. Strunin
B. M. Strunin
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A. K. Mkrtychyan
A. K. Mkrtychyan
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M.L. Sherman
M.L. Sherman
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S.S. Sluzhenikin
S.S. Sluzhenikin
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A.M. Lurye
A.M. Lurye
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Society of Economic Geologists
Volume
1
ISBN electronic:
9781629490250
Publication date:
January 01, 1988

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