Geophysical model of the mantle ore-forming system
Keywords:geophysical model, Moho division, lithosphere, asthenosphere, mantle deposits, mantle faults, tectonic ruptures, ore fields
The paper deals with a generalized geophysical model of the mantle ore-forming system that covers three main parts: a) the area of origin of the ore substance; b) its transportation zone and c) the area of concentrated ore-formation ― a deposit. The essence of the model uses the modern achievements of metallogeny and deep geophysics on one hand, as well as original quantitative data on the structure of the astenosphere in the regions of large deposits of non-ferrous and metal ores deposits in Central Srednogorie and the Central Rhodopes on the other. As a result of geophysical studies longitudinal and transversal mantle faults have been tracked as well as the lifting of the heated roof of the asthenospheric layer. In addition quantitative data have been obtained on considerable vertical amplitudes of tectonic ruptures both on the Moho division of more than 7―14 km and on the upper boundary of asthenospheric layer where the amplitude is more than 60 km. The structure of endogenous ore-forming system described shows that two of its main parts, namely origination and localization of ore-bearing products are completely situated in asthenosphere and earth crust respectively. The third main part ― the transporting one occupies some restricted area of the upper mantle and the whole vertical size of the earth crust coincident with crust-mantle nods. The features of tectonosphere revealed within the limits of the mantle ore areas as well as specific geophysical character of asthenospheric layer certificate that within these areas favorable conditions were generated for emergence and functioning of convecting cells and ascending magmo-fluid flows. All the mentioned, stimulated origination of ore-bearing magma in asthenosphere layer and their movement to the surface, where in the Late Cretaceous (Srednogorie) and Paleogenic (Rhodopes) the mantle deposits were formed. The results of the studies conducted are the important step in clearing the problem of origination of the ore matter realized in asthenosphere.
Berdichevsky, M., & Zhdanov, M. (1981). Interpretation of anomalies of the variable electromagnetic field of the Earth. Moscow: Nedra, 327 p. (in Russian).
Botev, E., Treusov, A., & Eftimova, V. (1996). High-speed model of the crust and upper mantle in Bulgaria according to the registration of earthquakes and explosions. Bulgarian Geophysical Journal, 22(2), 50―61 (in Bulgarian).
Volvovsky, I., Dachev, Ch., Popova, O., Velev, A., Babinets, V. A., & Natroshvili, L. I. (1985). The crustal structure of the territory of Bulgaria according to the profile of the GSZ—MOVZ, Petrich—Nikopol—Vrancea. Byulleten Moskovskogo obshchestva ispytateley prirody. Otdel geologicheskiy, 60(4), 38―45 (in Russian).
Datchev, Hr. (1988). Construction of the crust in Bulgaria. Sofia: Technique, 334 p. (in Bulgarian).
Deryabin, N. I. (1999). Fluid ore formation. Kiev: Alfa-Print, 278 p. (in Russian).
Derbyin, N. I. (2003). New ideas about fluid ore formation in metallogeny of the earth’s crust. Geologicheskiy zhurnal, (4), 107—116 (in Russian).
Iosifov, D. (2007). Ore concentration structures in Bulgaria. Geology and mineral resources, (6), 14―17 (in Bulgarian).
Yosifov, D., & Georgieva, G. (2018). Features of the structure of the upper mantle on the territory of large deposits of non-ferrous metals in Bulgaria. Mining and Geology, (2-3), 3―9 (in Bulgarian).
Yosifov, D., & Radichev, R. (2018). The structure of the earth’s crust on the territory of large deposits of non-ferrous metals in Bulgaria. Mining and Geology, (10), 31―38 (in Bulgarian).
Kazansky, V. (1998). Endogenous ore-forming systems and genetic models of endogenous ore formations. In Ore formation and genetic models of endogenous ore formations (pp. 10—18). Novosibirsk: Science (in Russian).
Kozerenko, V. (1981). Endogenous metallogeny. Moscow: Nedra, 279 p. (in Russian).
Kutas, R. (1978). Heat flow field and thermal model of the Earth’s crust. Kiev: Naukova Dumka, 147 p. (in Russian).
Marakushev, A. (1988). Petrogenesis. Moscow: Nedra, 294 p. (in Russian).
Marakushev, A. (1997). Petrogenesis and ore formation. Moscow: Nedra, 216 p. (in Russian).
Pavlenkova, N. I. (2004). Empirical foundations of the rotational fluid hypothesis of global tectonogenesis. Geofizicheskiy zhurnal, 26(6), 41—60 (in Russian).
Smirnov, V. I. (1978). Endogenous metallogeny. In Tectonosphere of the Earth (pp. 121—169). Moscow: Nauka (in Russian).
Smirnov, V. I. (1981). Energy bases of postmagmatic ore formation. Geologiya rudnykh mestorozhdeniy, (1), 5―17 (in Russian).
Spasov, E., & Botev, E. (1987). Uniformity and anisotropy in the upper mantle of the Balkans according to tele-themitic data. Bulgarian Geophysical Journal, (13), 66―75 (in Bulgarian).
Scheglov, A. (1987). The main problems of modern metallogeny (theory and practice). Leningrad: Nedra, 232 p. (in Russian).
Anderson, D. (1981). A global geochemical model for the evolution of the mantle in evolution the Earth. Geodin. Series, 5, 6—18.
Christoskov, L. (1972). On the amplitude curves of body waves for short epicentral distances and their oscillatory character. Zeitschrift für Geophysik, 38, 129—239.
Cox, D. P., & Singer, D. A. (Eds.). (1986). Mineral deposit models. Washington, 175 p.
Menzies, M., & Chazot, G. (1995). Fluid processes in diamond to spinel facies shallow mantle. Journal of Geodynamics, 20(4), 387—415. https://doi.org/10.1016/0264-3707(95)00018-5.
Watson, J. (1980). Metallogenesis in relation to mantle heterogeneity. Philosophical Transactions of the Royal Society A, 297(1430), 347—352. https://doi.org/10.1098/rsta.1980.0220.
How to Cite
Copyright (c) 2020 Geofizicheskiy Zhurnal
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).