Vertical movements of the Earth's crust on the continents |
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| Authors: | V V Beloussov G I Reisner E M Rudich V M Sholpo |
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| Institution: | (1) Academy of Sciences of the U.S.S.R., Molodezhnaya, 3, B-296 Moscow, U.S.S.R. |
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| Abstract: | Vertical oscillating movements of the Earth's crust on continents have occurred and are occurring everywhere on the Earth's surface, continuously throughout the entire geological history of the Earth. This provides grounds to consider them as the basic type of tectonic movements, which form the general background of the tectogenetic process, on which locally, and only at separate moments of time, other tectonic movements and deformations appear.According to the time of occurrence, the vertical movements are divided into recent, young, modern, and ancient. In compliance with this subdivision, different methods are applied to define and study the movements. The major characteristic of the vertical movements is their rhythm, or periodic change in sign of movement, which caused them to be calledoscillating. Rhythms of movements are of several orders. The largest rhythms, which comprise tectonic cycles, are manifested on a global scale; smaller rhythms have a local distribution. It is significant that, in the beginning and in the end of each tectonic cycle, an increase of intensity and contrast of movements is observed, no matter in which region or regime, whether stable or mobile, it occurs. |
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