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dc.contributor.authorChaubey, A.K.
dc.contributor.authorDyment, J.
dc.contributor.authorBhattacharya, G.C.
dc.contributor.authorRoyer, J.-Y.
dc.contributor.authorSrinivas, K.
dc.contributor.authorYatheesh, V.
dc.date.accessioned2008-08-03T09:25:58Z
dc.date.available2008-08-03T09:25:58Z
dc.date.issued2002
dc.identifier.citationThe tectonic and climatic evolution of the Arabian Sea region. Ed by: Clift, P.D.Kroon, D.Gaedicke, C.Craig, J.. eds.Geological Society, Burlington House, Piccadilly; UK; 4-5 Apr 2001). 71-85
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/1334
dc.description.abstractA revised magnetic isochron map of the conjugate Arabian and Eastern Somali basins based on an up-to-date compilation of Indian, French, and other available sea-surface magnetic data are presented. The magnetic anomaly and the modulus of the analytical signal computed from the magnetic anomaly to identify and precisely locate the young and old edges of magnetic chrons in both basins is used. In addition to the major, well-defined anomalies, correlatable second-order features of the magnetic anomalies, the 'tiny wiggles', to strengthen the interpretation are used. The resulting isochrons and tectonic elements have been validated using the stochastic method of palaeogeographical reconstruction. The magnetic anomaly pattern in both basins depicts clear oblique offsets, characteristics of pseudofaults associated with propagating ridge segments. The tectonic interpretation of the area revealed: (1) a complex pattern of ridge propagation between Chrons 28n (c. 63 Ma) and 25n (c. 56 Ma), with dominant eastward propagation between Chrons 26n (c. 58 Ma) and 25n; (2) numerous, systematic westward propagation between Chrons 24th (c. 53 Ma) and 20n (c. 43 Ma); (3) asymmetric crustal accretion (caused by ridge propagation and asymmetric sea-floor spreading) in the conjugate basins during the whole period; (4) a slowing of India-Somalia motion after c. 52 Ma
dc.language.isoen
dc.publisherGeological Society of London, UK
dc.rightsGeological Society of London
dc.subjectgeomagnetism
dc.subjectbasins
dc.subjectmagnetic data
dc.subjectmagnetic anomalies
dc.subjectpalaeogene
dc.subjectpalaeo studies
dc.titlePaleogene magnetic isochrons and palaeo-propagators in the Arabian and Eastern Somali basins, NW Indian Ocean
dc.typeConference Article


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