| Autor: |
I.S. Feldman, E.A. Lubimova |
| Rok vydání: |
1970 |
| Předmět: |
|
| Zdroj: |
Tectonophysics. 10:245-281 |
| ISSN: |
0040-1951 |
| DOI: |
10.1016/0040-1951(70)90110-1 |
| Popis: |
A review of new heat flow values for regions of the U.S.S.R. is given. The temperature values corresponding to the different heat flow values from 0.5 to 2.0 HFU and the different thickness of the continental crust which are observed for the U.S.S.R. territory are constructed. The reliability of the magnetotelluric investigations for some regions of the U.S.S.R. territory is discussed. Using the laboratory data on the energy activations and electrical conductivity of olivinites for temperature range of 500°–1,200° C the models of electrical conductivity distributions in the upper mantle are constructed on the basis of temperature curves on the conditions that olivines predominate in the composition of the mantle and they contain 10–17% fayalites. In the regions of the south Caspian depression as well as the Hungarian trough, as evidenced by the data of magnetotelluric investigation, an anomalously conducting layer (about 20 km thick) is traced in the upper mantle at the depth of 40–60 km. The presence of this layer may be related to the partial melting of the matter of the upper mantle. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
