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THREE-DIMENSIONAL DENSITY AND MAGNETIC MODELS ON THE FRAGMENT OF THE BASE GEOLOGICAL-GEOPHYSICAL PROFILE 1-SB

O. G. Sadur, E. Yu. Goshko

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

For a number of reasons, the 1-SB base geological and geophysical profile is located along the lines of highways, with the result that the profile’s linearity is violated. Two models, namely geo-density and geomagnetic, were constructed along the 800 km long profile using complex geological and geophysical data. However, their graphic perception, in view of the curvilinear profile, does not allow one to obtain a correct idea of the true dimensions and spatial position of the structural-tectonic elements of the Earth’s crust. In order to eliminate these drawbacks in the 90-km-wide profile, we have obtained geo-density and geo-magnetic volume models based on the solution of direct and inverse problems simultaneously (taking into account the influence of the fields both along profiles and between profiles) by nine rectilinear design profiles including the entire seismic profile. In these models, unlike the profile ones, the true dimensions and spatial position of the structural-tectonic elements of the Earth’s crust are shown in a somewhat coarse form.

Keywords:: base seismic profile 1-SB, Central-Asian forded belt, gravitational and magnetic fields, relief, geo-density and geo-magnetic models.

DOI 10.20403/2078-0575-2018-3-43-53