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Advanced insights into magmatism and volcanism of the Mozambique Ridge and Mozambique Basin in the view of new potential field data ArchiMer
Koenig, Matthias; Jokat, Wilfried.
P>A new plate tectonic model is presented which describes the emplacement of the Mozambique Ridge off southeast Africa as the result of long lasting volcanic activity (140-122 Ma) during the initial opening between Africa and Antarctica. Thus, an oceanic origin for the Mozambique Ridge is proposed. This model is based on a new and systematic high resolution magnetic anomaly data set acquired across the Mozambique Ridge and throughout the Mozambique Basin. Data from the Mozambique Basin allow the identification of Mesozoic magnetic anomalies from M0r to M26 (124.61-155.3 Ma) with previously unmatched accuracy. Small-scale fracture zones are recognized by offsets of magnetic anomalies in the westernmost part of the basin. Additionally, a bend in the major...
Tipo: Text Palavras-chave: Magnetic anomalies: modelling and interpretation; Marine magnetics and palaeomagnetics; Oceanic plateaus and microcontinents; Large igneous provinces; Africa; Antarctica.
Ano: 2010 URL: https://archimer.ifremer.fr/doc/00231/34261/32626.pdf
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