The theory of geosynclines is an outdated geological theory that explains tectonic processes in the history of the Earth by the cyclical oscillatory movements of the earth's crust , which found themselves in the appearance of folded regions - geosynclines . This theory was widely developed from the end of the 19th century to the 60s of the 20th century [1] [2] [3] .
Content
History
The theory of geosynclines is based on the concept of cyclic oscillatory movements, where on the site of large subsidence (deflections), uplifts can form. According to this theory, the active stage of the geosynclinal regime corresponds to active tectonic processes, accompanied by the sinking of large sections of the earth's crust . This stage is characterized by active intrusive magmatism. Further, as a result of the gradual attenuation of these oscillations, the platform mode is replacing the geosynclinal mode. The platform mode is characterized by weak tectonic movements and low thicknesses of sedimentary formations. Subsequently, “post-platform orogenes ” develop on the platform site.
In the sixties and seventies of the XX century, thanks to the efforts of many geologists who tried to deepen and substantiate the theory of geosynclines, a lot of systematic geological data related to tectonic processes was collected. In particular, the most important results were obtained as a result of multiple drilling of the ocean floor . However, it turned out that the new data do not confirm the theory of geosynclines, but the theory of plate tectonics , which is currently generally accepted in geology [1] [3] .
The theory of geosynclines contributed to a significant accumulation of data for subsequent theories and the development of the theory of ore formation and the solution of genetic problems in the formation of mineral deposits.
See also
- Theory of Plate Tectonics
- Neo-hero
Notes
- ↑ 1 2 N.V. Koronovsky. General geology. - Moscow: Publishing House of Moscow University, 2002. - S. 106-108. - 446 p. - 3000 copies. - ISBN 5-211-04490-8 .
- ↑ DF Branagan. History of Geology from 1900 to 1962 // Encyclopedia of Geology. - Academic Press, 2004 .-- T. 3 . - S. 185—196 . - ISBN 0126363803 .
- ↑ 1 2 UB Marvin. History of Geology since 1962 // Encyclopedia of Geology. - Academic Press, 2004 .-- T. 3 . - S. 197-207 . - ISBN 0126363803 .
Literature
- N.V. Koronovsky. General geology. - Moscow: Publishing house of Moscow University, 2002. - 446 p. - 3000 copies. - ISBN 5-211-04490-8 .
- DF Branagan. History of Geology from 1900 to 1962 // Encyclopedia of Geology. - Academic Press, 2004 .-- T. 3 . - S. 185—196 . - ISBN 0126363803 .
- UB Marvin. History of Geology since 1962 // Encyclopedia of Geology. - Academic Press, 2004 .-- T. 3 . - S. 197-207 . - ISBN 0126363803 .