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Metallogenic Belt Map of Northeast Asia
Published in Adam Piestrzyński, Mineral Deposits at the Beginning of the 21st Century, 2001
A.A. Obolenskiy, S.M. Rodionov, L.M. Parfenov, M.I. Kuzmin, E.G. Distanov, V.I. Sotnikov, Zh.V. Seminskiy, A.M. Spiridonov, V.A. Stepanov, A.I. Khanchuk, W.J. Nokleberg, O. Tomurtogoo, G. Dejidmaa, Y. Hongquan, S. Fengyue, D.H. Hwang, M. Ogasavara
For modern metallogenic analysis, three interrelated problems exist. 1. What is the relation of geodynamics to regional or global metallogeny? As discussed by Zonenshain et al. (1992), Dobretsov & Kirdyashkin (1994), this problem includes the role of convective processes in mantle and mantle plumes, the global processes of formation of the continents and oceans, the dynamics of development of major tectonic units of the earth’s crust, metallogenic evolution of the earth, and the role mantle processes in the origin of major belts of deposits. 2. What is relation of regional metallogeny to individual lithosphere blocks? As discussed by Guild (1978), Mitchell and Garson (1981), and Koroteev (1996), this problem includes the genesis of specific metallogenic belts as a function of specific geodynamic environments using the modern concepts of plate tectonics. 3. What is the relation of metallogeny to individual tectonostratigraphic terranes and overlap assemblages? As discussed by Nokleberg et al. (1993, 1998) and Parfenov et al. (1999), this problem includes the genesis of specific metallogenic belts in individual fault-bounded units of distinctive stratigraphy, defined as tectonostratigraphic terranes, and in younger overlapping assemblages often containing igneous rocks formed in continental margin or island arcs, along rift systems in continents, or along transform continental margins.
Age and geochemistry of the Boucaut Volcanics in the Neoproterozoic Adelaide Rift Complex, South Australia
Published in Australian Journal of Earth Sciences, 2021
S. E. Armistead, A. S. Collins, S. Buckman, R. Atkins
Several intrusive and extrusive magmatic suites are present within the Adelaide Superbasin. Owing to the scarcity of robust age constraints, these have been challenging to place within a tectonostratigraphic framework, and to correlate with other units across the region. The Kooringa Member within the Skillogalee Dolomite contains an intrusive porphyry that has been dated at 794 ± 4 Ma (Preiss et al., 2009). This is within uncertainty of the Boucaut Volcanics and may represent an intrusive equivalent.