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Small-scale crustal variability within an intraplate structure: the Crozet Bank (southern Indian Ocean) ArchiMer
Recq, M; Goslin, J; Charvis, P; Operto, S.
The Crozet Bank, the easternmost region of the Crozet Plateau (austral Indian Ocean), is capped by two groups of islands which form the Crozet Archipelago (Terres Australes and Antarctiques Francaises). A N-S-trending 2 km deep basin, the Indivat Basin, extends between the two groups of islands and bisects the Crozet Bank into two separate domains. The interpretation of the KeOBS8 seismic refraction profile shot during the KeOBS/MD66 cruise (January-February 1991) over the eastern Crozet Plateau was carried out by ray tracing and the computation of synthetic seismograms. This interpretation leads to a rather complex seismic structure and outlines a pronounced eastward crustal thinning from 16.5 to 10 km at the expense of layer 2. The thinning of the crust...
Tipo: Text Palavras-chave: Aseismic ridge; Crozet Islands platform; Crustal structure; Gravity anomalies; Hotspots; Seismic refraction.
Ano: 1998 URL: https://archimer.ifremer.fr/doc/00297/40789/39805.pdf
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