THE ANOMALOUS STRUCTURE OF KNIPOVICH RIDGE
Abstract and keywords
Abstract (English):
The study of bathymetric, single-channel seismic and CDP profiling data, and modern seismicity for the Knipovich Ridge reveals its discordance with respect to the surrounding structural grain, suggesting that it is a recent, superimposed feature. The available geological and geophysical data constrain the inception of the Knipovich Ridge as an oceanic rift to the Miocene. The trend of lineaments, emphasized by the deep structure and present-day seafloor topography on the west flank of the ridge and along its crest, most likely reflects a stress field geometry and a dynamic pattern of tectonic movements dissimilar to the modern structural plan. From the degree of development of structural features of the Knipovich Ridge and from the changes in the mode of its tectonic evolution, which are atypical of mid-oceanic ridges, it is an oceanic rift that is still, structurally, in its formative phase.

Keywords:
Mid-oceanic ridge, CDP profiling, geodynamics.
Text
Publication text (PDF): Read Download
References

1. Avetisov, Geological and Geophysical Characteristics of the Lithosphere in the Arctic Region, issue 2, 1998.

2. Avetisov, Seismoactive Zones of the Arctic, 1996.

3. Avetisov, Geodynamics of the submarine Knipovich Ridge, Norwegian-Greenland Basin, 1999.

4. Baturin, Otechestvennaya Geologiya, v. 10, 1992.

5. Baturin, Okeanologiya, v. 30, no. 3, 1990.

6. Baturin, Sedimentary Cover of the Western Arctic Metaplatform Tectonics and Stratigraphy, 1993.

7. Baturin, Geology of Spitsbergen Sedimentary Cover, edited by A. Krasilshchikov and M. Mirzaev, 1986.

8. Baturin, Dokl. Akad. Nauk SSSR, v. 306, no. 4, 1989.

9. Cherkis, Regional bathymetry of the Northern Norwegian-Greenland Sea, scale 1:3,000,000, 1994.

10. Crane, Norsk Polarinstitutt Meddelelser, v. 137, 1995.

11. Eidvin, Marine Geology, v. 112, 1993., doi:https://doi.org/10.1016/0025-32279390164-Q

12. Eiken, Norsk Polarinstitutt Meddelelser, v. 130, 1994.

13. Eldholm, Geology, v. 15, 1987., doi:https://doi.org/10.1130/0091-7613198715lt;1118:CTATWBgt;2.0.CO;2

14. Faleide, Norsk Polarinstitutt Skrifter, v. 180, 1984.

15. Faleide, Global and Planetary Change, v. 12, 1996., doi:https://doi.org/10.1016/0921-81819500012-7

16. Gabrielsen, Norwegian Petroleum Directorate Bulletin, v. 6, 1990.

17. Hinz, Marine Geology, v. 26, 1978., doi:https://doi.org/10.1016/0025-32277890060-9

18. Karasik, Geophysical Characteristics of the Earth's Crust of the Atlantic Ocean, 1985.

19. Klitin, Byull. Mosk. O-va Ispyt. Prir., Otd. Geol., v. 58, no. 3, 1983.

20. Klitin, Izv. Akad. Nauk SSSR, Ser. Geol., v. 5, 1988.

21. Larsen, The Geology of North America, Volume M, The Arctic Ocean Region, 1990.

22. Locker, Proceedings of the Ocean Drilling Program, Scientific Results, edited by J. Thiede, A. M. Myhre, J. V. Firth, G. L. Johnson, and W. F. Ruddiman, v. 151, 1996.

23. Matishov, Ocean Floor during the Glacial Period, 1984.

24. Naryshkin, Seafloor topography of the Arctic Ocean, scale 1:5,000,000, stereographic projection, 1998.

25. Neumann, Contrib. Miner. Petrol., v. 85, 1984., doi:https://doi.org/10.1007/BF00378101

26. Ohta, Canadian Soc. Petrol. Geol. Memoir, v. 8, 1982.

27. Ohta, Polar Research, no. 5, 1987.

28. Olesen, 1997.

29. Osterman, Proceedings of the Ocean Drilling Program, Scientific Results, edited by J. Thiede, A. M. Myhre, J. V. Firth, G. L. Johnson, and W. F. Ruddiman, v. 151, 1996.

30. Poroshina, Morphotectonic setting of the areas of hydrothermal activity on the Knipovich Ridge, 1998.

31. Rudich, The Moving Continents and Ocean Floor Evolution, 1983.

32. Saettem, Marine Geology, v. 118, 1994., doi:https://doi.org/10.1016/0025-32279490087-6

33. Savostin, Dokl. Akad. Nauk SSSR, v. 291, no. 6, 1986.

34. Scherer, Proceedings of the Ocean Drilling Program, Scientific Results, edited by J. Thiede, A. M. Myhre, J. V. Firth, G. L. Johnson, and W. F. Ruddiman, v. 151, 1996.

35. Shkarubo, Geological and Geophysical Characteristics of the Lithosphere in the Arctic Region, 1996.

36. Shkarubo, Twenty-five Years on Russia's Arctic Shelf, 1999.

37. Sigmond, 1992.

38. Sushchevskay, Geochemical and tectonic inhomogeneities of the Mohns-Knipovich Ridge, 1997.

39. Talwani, Geol. Soc. Amer. Bull., v. 88, 1977., doi:https://doi.org/10.1130/0016-7606197788lt;969:EOTNSgt;2.0.CO;2

40. Talwani, Initial Reports of the Deep Sea Drilling Project, v. 38, 1976.

41. Thiede, Proceedings of the Ocean Drilling Program, Initial Reports, v. 151, 1995.

42. Udintsev, Geology of the World Ocean. The Atlantic. Biostratigraphy and Tectonics, 1982.

Login or Create
* Forgot password?