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Тектонические аспекты пространственного и временнóго распределения соленосных бассейнов мира

Беленицкая Г.И.

Тектонические аспекты пространственного и временнóго распределения соленосных бассейнов мира

Беленицкая Галина Александровна, доктор геолого-минералогических наук, главный научный сотрудник отдела литогеодинамики и минерагении осадочных бассейнов Всероссийского научно-исследовательского геологического института им. А.П.?Карпинского (ВСЕГЕИ).

E-mail: Galina_Belenitskaya@vsegei.ru, ankudinovo@mail.ru

Анализ тектонических обстановок образования соленосных осадочных бассейнов мира, основанный на серии палеокинематических реконструкций для главных эпох соленакопления, показал, что между интенсивностью соленакопления и тектонической активностью наблюдаются устойчивые временные и пространственные зависимости. В каждую из эпох галогенеза обстановки образования соленосных бассейнов контролируются активными поясами, а внутри поясов — тектоническими элементами более низкого ранга. Раскрыты закономерности пространственного и временного распределения соленосных бассейнов и тенденции их палеотектонической эволюции.

Ключевые слова: соленосные осадочные бассейны, галогенез, палеотектоника, палеогеодинамический анализ, эпохи соленакопления, палеокинематические реконструкции, закономерности образования соленосных поясов, эволюция соленакопления.

Belenitskaya G.A. Tectonic Aspects of Spatial and Temporal Allocation of Salt-Bearing Basins of the World

Galina A. Belenitskaya, D.Sc. (Geology and Mineralogy), Chief Researcher, A.P.?Karpinsky All-Russian Geological Research Institute (VSEGEI), Department of Lithogeodynamics and Metallogeny of Sedimentary Basins

E-mail: ankudinovo@mail.ru; Galina_Belenitskaya@vsegei.ru

Analysis of sedimentary paleotectonics is one of the most heuristic approaches in modern lithogeodinamic studies. Subject of my research is salt-bearing sedimentary basins, and for this goal I use plait-tectonic method for paleokinematic reconstructions. Based on a series of those ones applied to the main "salt epochs", I represent the geodynamic analysis of environments of world salt-bearing sedimentary basins formation. The results showed that there is stable temporal and spatial linkage between the salt formation and tectonic activity. Active belts controls salt-bearing basins formation conditions during each of the salt epochs, and lower rank tectonic elements controls those conditions within the belts. In my article, I discuss the regularities of spatial and temporal allocation of salt-bearing basins and the tendency of their paleotectonic evolution, viz:

(i) Periodicity of salt accumulation in the Earth's geological history (unequally-discrete character of the quantitative and qualitative allocation according to the stratigraphic scale with the formation of a peaks-highs series). Peaks of different ranks halogenesis (global, regional) are correlated with peaks of geodynamic activity of the same rank; discrete-periodic nature of the allocation of salt objects fixes the stadial-cyclical rhythm of the global and regional geodynamic events

(ii) Spatial ordering. Systems of saliferous objects (super-belts, belts, basins) at each stratigraphic level correspond to the systems of the same rank paleogeodynamic elements, which control the first ones. The largest saliferous basins linked to intersections of tectonic elements

(iii) Correlation between the common regional age of development of saliferous objects, on the one hand, and common intervals of manifestations of tectonic activity in these regions, on the other; correlation between the individual peaks of salt accumulation and its most significant pulses. Multilevelness of halogenesis reflects the fact of many acts of the manifestations of tectonic activity

(iv) Synchronicity (or a regular sequence, and migration) of halogenic events reflects the spatial and temporal allocation and relations of co-scale paleotectonic events

(v) Geodynamic "specialization" of halogenesis epochs reflects the uneven character of allocation of predominant geodynamic regimes. Collisional "specialization" is expressed most clearly for the Miocene, Permian and perhaps Late Vendian — Middle Cambrian. In similar way riftogenic "specialization" is distinctive for Mid-Late Devonian.

(vi) Geochemical "specialization" of halogenesis epochs with selective linkage between some geochemical types of salinity and with those or other epochs largely reflects their geodynamic specificity. Sulphate-potassium "specialization" is most expressed for the collisional epochs of Miocene, Permian and perhaps for the late Vendian-Middle Cambrian and chloride-calcium "specialization" for riftogenic epochs of Cretaceous

(vii) Inheritance of placement of saliferous belts and basins in relation to the earlier generation objects and their multilevelness.

Keywords: Earth’s evolution, primary stellar matter, Solar system planets, the driving force of tectonic processes, pulsating widening, chemical elements of the cortex, processes of destruction and disintegration, nuclear molecules, origin of minerals.