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Crustal geometry of the northeastern Gulf of Aden passive margin: localization of the deformation inferred from receiver function analysis ArchiMer
Tiberi, C.; Leroy, S.; D'Acremont, E.; Bellahsen, N.; Ebinger, C.; Al-lazki, A.; Pointu, A..
Here we use receiver function analysis to retrieve crustal thickness and crustal composition along the 35-My-old passive margin of the eastern Gulf of Aden. Our aims are to use results from the 3-D seismic array to map crustal stretching across and along the Aden margin in southern Oman. The array recorded local and teleseismic events between 2003 March and 2004 March. Seventy-eight events were used in our joint inversions for Vp/Vs ratio and depth. The major results are: (1) Crustal thickness decreases from the uplifted rift flank of the margin towards the Sheba mid-ocean ridge. We found a crustal thickness of about 35 km beneath the northern rift flank. This value decreases sharply to 26 km beneath the post-rift subsidence zone on the Salalah coastal...
Tipo: Text Palavras-chave: Crustal structure; Receiver function; Rifted margin; Segmentation; Seismology.
Ano: 2007 URL: https://archimer.ifremer.fr/doc/00207/31826/30228.pdf
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