naa a22 4500 510764886 CHVBK 20180411083153.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1134/S0001437013010141 doi (NATIONALLICENCE)springer-10.1134/S0001437013010141 The origin and age of the Alpha-Mendeleev and Lomonosov ridges in the Amerasia Basin [Elektronische Daten] [E. Verzhbitskii, L. Lobkovskii, A. Byakov, M. Kononov] The results of the bathymetry simulation indicate the emplacement of the Mesozoic Arctic plume into the lithosphere of the Alpha-Mendeleev and Lomonosov ridges. The study also presents a model of the thermal subsidence to the asthenosphere. The calculated coefficients are compared with those obtained for the Greenland-Iceland and Iceland-Faeroe ridges, which were formed in response to hotspot activity. It was shown that the coefficients of the thermal subsidence in the central part of the Alpha-Mendeleev and Lomonosov Ridges are similar to those calculated for the Greenland-Iceland and Iceland-Faeroe ridges. This indicates the thermal regime of the subsidence of the Alpha-Mendeleev and Lomonosov ridges since the Early Miocene and the increased influence of the Arctic plume on the ridge genesis. The ridges are interpreted to have formed over a broad geological timeframe, from the late Cretaceous to the Cenozoic. A geothermal method, which is highly informative in terms of the age of the lithosphere, provides better constraints on the timing of ridge formation. The age estimates for the Alpha-Mendeleev (97-79 Ma) and Lomonosov ridges (69-57 Ma) derived from the geothermal data allowed us to draw a convincing conclusion about the genesis of these ridges. Pleiades Publishing, Ltd., 2013 Verzhbitskii E. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Lobkovskii L. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Byakov A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Kononov M. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut Oceanology SP MAIK Nauka/Interperiodica 53/1(2013-02-01), 89-98 0001-4370 53:1<89 2013 53 11491 https://doi.org/10.1134/S0001437013010141 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0001437013010141 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Verzhbitskii E. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Lobkovskii L. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Byakov A. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 700 1- Kononov M. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia aut NATIONALLICENCE 773 0- Oceanology SP MAIK Nauka/Interperiodica 53/1(2013-02-01), 89-98 0001-4370 53:1<89 2013 53 11491 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer