Physics – Geophysics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3721311j&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 21, CiteID L21311
Physics
Geophysics
1
Marine Geology And Geophysics: Plate Tectonics (8150, 8155, 8157, 8158), Geomagnetism And Paleomagnetism: Magnetic Anomalies: Modeling And Interpretation, Geographic Location: Antarctica (4207), History Of Geophysics: Tectonophysics
Scientific paper
In order to enhance our understanding of the continental break-up between East India and Antarctica, a Japanese/German aerogeophysical survey was conducted off eastern Dronning Maud Land and western Enderby Land, Antarctica. The systematic survey with a line spacing of 20 km provides strong constraints on the timing of the initial break-up of India/Antarctica compared to the conjugate margin south of Sri Lanka. While the continent-ocean transition is very well marked by pronounced positive and negative magnetic anomalies, no hints on the existence of magnetic spreading anomalies north of this zone has been found in the new data set. Thus, in contrast to most recently published models, the data only support kinematic models, which include a final break-up of Sri Lanka/India from our investigated area some 90-118 Ma within the Cretaceous Normal Superchron.
Jokat Wilfried
Leinweber V.
Nogi Yoshifumi
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