EURASIA SPREADING BASIN TO LAPTEV SHELF TRANSITION: STRUCTURAL PATTERN AND HEAT FLOW
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dc.contributor.author | Drachev S.S. | |
dc.contributor.author | Kaul N. | |
dc.contributor.author | Beliaev V.N. | |
dc.date.accessioned | 2022-02-02T08:58:59Z | |
dc.date.available | 2022-02-02T08:58:59Z | |
dc.date.issued | 2003 | |
dc.identifier | https://elibrary.ru/item.asp?id=13434906 | |
dc.identifier.citation | Geophysical Journal International, 2003, 152, 3, 688-698 | |
dc.identifier.issn | 0956-540X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/34848 | |
dc.description.abstract | New geophysical data have become available from shipborne and satellite measurements allowing a re-evaluation of the largely unknown junction of the Arctic spreading centre and the northeastern Siberian continental margin where the transpolar mid-ocean Gakkel Ridge abuts against the continental slope of the Laptev Sea. Based on multichannel seismic reflection and gravity data, this sediment-covered spreading axis can be traced to the continental rise where it is cut-off by a transcurrent fault. Further continuation of the extensional axis into the continental slope can be attributed to two asymmetric grabens, which terminate against the prominent Khatanga-Lomonosov Fracture. Remnants of hydrothermal fauna and high heat-flow values of approximately 100 mW m-2 documented around these grabens in the up-slope area are typical for an oceanic spreading axis. Thus we consider these grabens to be morphotectonic termination of the global Atlantic-Arctic spreading system with plate motions shifting to the Khatanga-Lomonosov Fracture. The high heat flow and the distribution of earthquake epicentres allow us to assume that the present-day divergent plate tectonic boundary passes from the Gakkel Ridge to the eastern part of Laptev Sea with an offset of initial rifting along the Bel'kov-Svyatoi Nos Rift to the projected prolongation of the buried spreading axis by 140-150 km. | |
dc.subject | Eurasia Basin | |
dc.subject | heat flow | |
dc.subject | Laptev Sea | |
dc.subject | ocean–continent transition | |
dc.subject | rifts | |
dc.subject | spreading | |
dc.title | EURASIA SPREADING BASIN TO LAPTEV SHELF TRANSITION: STRUCTURAL PATTERN AND HEAT FLOW | |
dc.type | Статья |
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