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- Title
Peculiarities of the East Scotia ridge's geochronology.
- Authors
Schreider, A.; Schreider, Al.; Kashintsev, G.; Galinado-Zaldivar, J.; Maldonado, A.; Boiko, A.; Evsenko, E.
- Abstract
The first map of the acoustic basement and the new map of chrons C1-C5E for the region of the East Scotia mid-ocean ridge have been made. The analysis of the maps and the calculations have indicated that the sea-floor spreading at the ridge's flanks started in its southeast in the interval of chrons C5Er-6An (18.52-20.17 Ma BP). The maximal spreading rate (5.3 cm/year) was in the interval of chrons C5Bn-C5Br (14.78-15.97 Ma BP). Then, the spreading rate was slow and increased again from 3-6 Ma BP until the present. The spreading in the last 1-2 Ma was accompanied by the propagating of the axes southwards in the E1, E2, and E4 segments and northwards in the E8 and E9 segments.
- Subjects
SUBMARINE geology; MARINE sediments; GEOLOGY; MID-ocean ridges; SUBMARINE topography
- Publication
Oceanology (00014370), 2011, Vol 51, Issue 6, p1047
- ISSN
0001-4370
- Publication type
Article
- DOI
10.1134/S0001437011050183