fig01.htm

Figure 1. Location map of major structural elements in the south of the Siberian Craton and the distribution of the rock complexes associated with the evolution of the Neoproterozoic Supercontinent.
Legend: (1) Late Riphean basic dike swarms (Nersa Complex); (2) Middle Riphean basic dike swarms: (a) Angaul Complex, (b) Chaya Complex; (3) basic volcanic rocks (Middle Riphean); (4) Carbonate-terrigenous deposits of the passive margin (Middle Riphean, Patoma Zone); (5) Late Riphean carbonate-terrigenous deposits of the passive margin and transitional to the rocks of collision origin (zones: (L) Lena zone, (BP) Baikal-Patoma zone, (B) Baikal zone, and (S) Sayan zone); (6) metamorphic rock complexes, inferred to be the rocks of the passive margin, which had been tectonically brought to contact the fragments of island-arc rocks (Kh - Khamardaban, K - Kitoika, and Dr - Derba complexes); (7-9) ophiolite belts: (7) Middle-Late Riphean (1.1-0.8 billion years) (I - Ilchira Belt); (8) Late Riphean-Vendian (0.7-0.55 billion years) (D - Dzhida Belt); (9) Middle-Late Riphean and late Riphean-Vendian (BM - Baikal-Muya Belt); (10) Early Precambrian terranes in the foldbelt (G - Gargan, M - Muya, Am - Amalat); (11a) the modern boundary of the Siberian Craton from geological and geophysical data, the craton is showed without its Phanerozoic sedimentary cover; (11b) various faults and boundaries between rock complexes; (12) Sayan-Baikal Foldbelt.
The letters denote the following major structural features of the Siberian Craton margin: A - Akitka volcanoplutonic belt; B - Biryusa Block; N - Nechera High; M - Maritime Zone; T - Tonod High; U - Ukuchikta Block; UT - Urik-Tumansheta Zone; Ch - Chuya High; Sh - Sharyzhalgai Protrusion; (I) Tungus, (II) Anabar, and (III) Aldan provinces. The black rectangles with numbers denote the areas of detailed surveys and the numbers of the figures referred to in the text.


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