Research output: Contribution to journal › Article › peer-review
Formation of the eurasia basin in the arctic ocean as inferred from geohistorical analysis of the anomalous magnetic field. / Glebovsky, V. Yu; Kaminsky, V. D.; Minakov, A. N.; Merkur'ev, S. A.; Childers, V. A.; Brozena, J. M.
In: Geotectonics, Vol. 40, No. 4, 01.07.2006, p. 263-281.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Formation of the eurasia basin in the arctic ocean as inferred from geohistorical analysis of the anomalous magnetic field
AU - Glebovsky, V. Yu
AU - Kaminsky, V. D.
AU - Minakov, A. N.
AU - Merkur'ev, S. A.
AU - Childers, V. A.
AU - Brozena, J. M.
PY - 2006/7/1
Y1 - 2006/7/1
N2 - A new combined magnetic database and a magnetic-profile map are developed for the Eurasia Basin as a result of adjusting all available historical and recent Russian and American magnetic data sets. The geohistorical analysis of magnetic data includes several steps: identification of linear magnetic anomalies along each trackline, calculation of the Euler rotation pole positions for the relative motion of the North American and Eurasian plates, analysis of temporal and spatial variations in the spreading rate, and plate reconstructions. The pattern of key Cenozoic magnetic isochrons (24, 20, 18, 13, 6, 5, 2a) is constructed for the entire Eurasia Basin. In the western half of the basin, this pattern is consistent with a recently published scheme [16]. In its eastern half, magnetic isochrons are determined in detail for the first time and traced up to the Laptev Sea shelf. The main stages in the seafloor spreading are established for the Eurasia Basin. Each stage is characterized by a specific spreading rate and the degree of asymmetry of the basin opening. The revealed differences are traced along the Gakkel Ridge. Systematic patterns in wandering of the Eurasia Basin opening pole are established for particular stages. The continent-ocean transition zone corresponding to the primary rupture between plates is outlined in the region under consideration on the basis of gravimetric data. The nature of different potential fields and bottom topography on opposite sides of the Gakkel Ridge is discussed. The characteristic features of the basin-bottom formation at main stages of its evolution are specified on the basis of new and recently published data. The results obtained are in good agreement with plate geodynamics of the North Atlantic and the adjacent Arctic basins.
AB - A new combined magnetic database and a magnetic-profile map are developed for the Eurasia Basin as a result of adjusting all available historical and recent Russian and American magnetic data sets. The geohistorical analysis of magnetic data includes several steps: identification of linear magnetic anomalies along each trackline, calculation of the Euler rotation pole positions for the relative motion of the North American and Eurasian plates, analysis of temporal and spatial variations in the spreading rate, and plate reconstructions. The pattern of key Cenozoic magnetic isochrons (24, 20, 18, 13, 6, 5, 2a) is constructed for the entire Eurasia Basin. In the western half of the basin, this pattern is consistent with a recently published scheme [16]. In its eastern half, magnetic isochrons are determined in detail for the first time and traced up to the Laptev Sea shelf. The main stages in the seafloor spreading are established for the Eurasia Basin. Each stage is characterized by a specific spreading rate and the degree of asymmetry of the basin opening. The revealed differences are traced along the Gakkel Ridge. Systematic patterns in wandering of the Eurasia Basin opening pole are established for particular stages. The continent-ocean transition zone corresponding to the primary rupture between plates is outlined in the region under consideration on the basis of gravimetric data. The nature of different potential fields and bottom topography on opposite sides of the Gakkel Ridge is discussed. The characteristic features of the basin-bottom formation at main stages of its evolution are specified on the basis of new and recently published data. The results obtained are in good agreement with plate geodynamics of the North Atlantic and the adjacent Arctic basins.
UR - http://www.scopus.com/inward/record.url?scp=33747005710&partnerID=8YFLogxK
U2 - 10.1134/S0016852106040029
DO - 10.1134/S0016852106040029
M3 - Article
AN - SCOPUS:33747005710
VL - 40
SP - 263
EP - 281
JO - Geotectonics
JF - Geotectonics
SN - 0016-8521
IS - 4
ER -
ID: 51324592