KALENDA, Pavel, Libor NEUMANN, Ivo WANDROL, Vaclav PROCHAZKA and Lubor OSTRIHANSKY. THEORY OF CONTINENTAL DRIFT - CAUSES OF THE MOTION. OUTLINE OF THE THEORY. GEODYNAMICS. 2023, vol. 2023, No 35, p. 5-18. ISSN 1992-142X. Available from: https://dx.doi.org/10.23939/jgd2023.02.005.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name THEORY OF CONTINENTAL DRIFT - CAUSES OF THE MOTION. OUTLINE OF THE THEORY
Authors KALENDA, Pavel, Libor NEUMANN, Ivo WANDROL (203 Czech Republic, belonging to the institution), Vaclav PROCHAZKA and Lubor OSTRIHANSKY.
Edition GEODYNAMICS, 2023, 1992-142X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10700 1.7 Other natural sciences
Country of publisher Ukraine
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19630/23:A0000327
Organization unit Institute of physics in Opava
Doi http://dx.doi.org/10.23939/jgd2023.02.005
UT WoS 001146762300005
Keywords in English Continental drift;motion of plates;mechanism;solar energy accumulation
Tags RIV24, UF
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 29/2/2024 07:36.
Abstract
The theory of mantle convection currents as the cause of lithospheric plate movements has several major problems, including the absence of an adequate energy source. As shown in our previous contribution, an unbiased interpretation of geochemical data does not support the assumptions of a significant amount of radionuclides in the lower mantle or even in the core. It is our assertion that solar radiation is the primary energy source in the lithosphere. This energy is converted into mechanical energy via thermoelastic waves, even in depths with minimal temperature fluctuations. This has been confirmed by various methods of continuous stress measurement. The periodic and quasiperiodic thermoelastic reversible deformations, such as the circadian and annual cycles (including tidal periods), can also cause irreversible deformations due to the ratcheting mechanism. The 2D model showed that the strength limit is exceeded in 0.3 % of all diurnal cycles during the year. As a consequence, continents tend to extend while the oceanic lithosphere is pushed and overthrusted between continents. The middle-ocean ridges, similar to continental rifts, are filled by ascending magma which is one example of the ratcheting mechanism. The final plate movements are determined by the distribution of major continents and the overall westward drift of the lithosphere, which is slower for deep-rooted plates like the Indian one. Large asteroid impacts are important triggers (and possibly significant energy sources) of discrete events, like the formation of hotspots and large igneous provinces.
PrintDisplayed: 18/7/2024 01:30