| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Deep crustal structure of the Tuamotu plateau and Tahiti (French Polynesia) based on seismic refraction data - art. no. 1656
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| Autores: |
Patriat, Martin
Klingelhoefer, Frauke
Aslanian, Daniel
Contrucci, Isabelle
Gutscher, Marc-andré
Talandier, Jacques
Avedik, Felix
Francheteau, Jean
Weigel, Wilfried
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| Data: |
2002-07
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| Ano: |
2002
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| Palavras-chave: |
Volcanic Islands
Flexure
Hotspot
Refraction methods
French Polynesia
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| Resumo: |
[1] In French Polynesia, the young (< 5Ma) Society Islands appear to result from intraplate volcanism, while the old (>50 Ma) Tuamotu plateau was likely created at or near the ridge axis. The structure of the crust between those two archipelagoes is constrained by a 300 km long refraction seismic profile. Crustal and upper mantle arrivals recorded by 6 OBHs and 3 land stations were used to provide a 2D model of the crust. Results of our study, combined with that of Grevemeyer et al. [2001] show a slight flexure below the Tahiti apron, while a deep crustal root (21 km) underlies the Tuamotu plateau. These structures reflect the different modes of load emplacement and compensation mechanisms between these two volcanic edifices, consistent with an increasing elastic thickness of the oceanic lithosphere with age.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2002/publication-621.pdf
DOI:10.1029/2001GL013913
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| Editor: |
American Geophysical Union
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| Relação: |
http://archimer.ifremer.fr/doc/00000/621/
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| Formato: |
application/pdf
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| Fonte: |
Geophysical Research Letters (0094-8276) (American Geophysical Union), 2002-07 , Vol. 29 , N. 14 , P. NIL_388-NIL_391
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| Direitos: |
2002 by the American Geophysical Union
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