The initial three-dimensional model, obtained using data from the latest REVEAL seismotomography model [Thrastarson et al., 2024], describes the structure of the lithosphere and upper mantle in terms of temperature and density variations. The modelling technique described n [Tesauro et al., 2014, Kaban et al., 2015] was used.

In general, the variations in density and temperature at different depths (Figure 1 and Figure 2, respectively) correspond to known data on the structure of the lithosphere and upper mantle of Northern Eurasia. They reflect processes such as the stabilisation of the ancient East European and Siberian cratons, the Palaeozoic and Mesozoic stages of orogenesis, the Mesozoic stage of plume-rift tectonics, as well as Pacific subduction and accretion in the late Mesozoic-Cenozoic.

The model study area extends from 50.25° to 79.75° north latitude and from 25.25° to 189.75° east longitude, covering Northern Eurasia.

The dataset includes temperature values for 26 depth slices, from 50 to 300 km below the Earth's surface, and density variation values for 54 depth slices, from 10 to 700 km below the Earth's surface.

The initial model has a latitude resolution of 0.5° and a longitude resolution of 0.5°.

The data have the following designations:
density_rel_10_700km_0p5 — depth slices of density variations in g/cm³ (10–700 km in 10 km increments);
temperature_50_300km_0p5 — depth slices of temperature in °C (50–300 km with a step of 10 km).

Data format description.

Figure 1. A comparison of the depth slices of variations in the density of the lithosphere and upper mantle


Figure 2. A comparison of the depth slices of temperature of the lithosphere and upper mantle