Seismic anisotropy and compositionally induced velocity anomalies in the lithosphere above mantle plumes: a petrological and microstructural study of mantle xenoliths from French Polynesia

Autor: Guilhem Coromina, Marguerite Godard, Andréa Tommasi, Hans G. Barsczus, Jean-Marie Dautria

Publikováno v: Earth and Planetary Science Letters. 227:539-556

In addition to thermal erosion, plume/lithosphere interaction may induce significant changes in the lithosphere chemical composition. To constrain the extent of this process in an oceanic environment and its consequences on the lithosphere seismic pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e251c472f4530db5034e7fd29df9828
https://doi.org/10.1016/j.epsl.2004.09.019

Isotope and trace element variations in lavas from Raivavae and Rapa, Cook–Austral islands: constraints on the nature of HIMU- and EM-mantle and the origin of mid-plate volcanism in French Polynesia

Autor: Janne Blichert-Toft, John C. Lassiter, Erik H. Hauri, Hans G. Barsczus

Publikováno v: Chemical Geology. 202:115-138

We have examined the major and trace element and Sr–Nd–Hf–Pb–Os isotope variations in two suites of lavas from the islands of Raivavae and Rapa from the Cook–Austral chain to better constrain the nature and origin of the source(s) of these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82b5de480b5243f991ca51928cc1bd30
https://doi.org/10.1016/j.chemgeo.2003.08.002

High μ (HIMU) ocean island basalts in southern Polynesia: New evidence for whole mantle scale recycling of subducted oceanic crust

Autor: Tetsu Kogiso, Gen Shimoda, Hans G. Barsczus, Yoshiyuki Tatsumi

Publikováno v: Scopus-Elsevier

Major elements, trace elements, and Pb isotopic compositions were determined for ocean island basalts (OIBs) from Polynesia in the southern Pacific in order to document the chemical characteristics of OIB sources and to understand their origin. High

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d9b7ede5eebc2aa372fd43d6ea937e0
https://doi.org/10.1029/96jb03892

Géochimie des basaltes de l'île de Ua Huka (archipel des Marquises): variation du taux de fusion partielle et hétérogénéité de la source mantellique

Autor: Gérard Guille, Géraldine Ielsch, René C. Maury, Hervé Guillou, Hans G. Barsczus, Martial Caroff, Joseph Cotten

Publikováno v: Comptes Rendus de l'Académie des Sciences-Series IIA-Earth and Planetary Science
Comptes Rendus de l'Académie des Sciences-Series IIA-Earth and Planetary Science, Elsevier, 1998, 326 (6), pp.413-420. ⟨10.1016/S1251-8050(98)80064-5⟩
Comptes rendus de l’Académie des sciences. Série IIa, Sciences de la terre et des planètes
Comptes rendus de l’Académie des sciences. Série IIa, Sciences de la terre et des planètes, 1998, 326 (6), pp.413-420. ⟨10.1016/S1251-8050(98)80064-5⟩
Comptes rendus de l’Académie des sciences. Série IIa, Sciences de la terre et des planètes, Elsevier, 1998, 326 (6), pp.413-420. ⟨10.1016/S1251-8050(98)80064-5⟩

The main shield volcano of Ua Huka Island (Marquesas Archipelago) was emplaced between 2.2 and 2.4 Ma, and then affected by two caldera collapse events. After a 0.9 Ma-long gap, volcanic activity resumed with the emplacement of two smaller volcanoes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d680c1f054094f0eec7b7f734909ec7e
https://hal.archives-ouvertes.fr/hal-03119634

Origin of basalts from the Marquesas Archipelago (south central Pacific Ocean): isotope and trace element constraints

Autor: P. Vidal, Hans G. Barsczus, Catherine Chauvel, Claude Dupuy

Publikováno v: Earth and Planetary Science Letters. 82:145-152

Basalts from the Marquesas Archipelago display significant variations according to magmatic type in 143Nd/144Nd (0.512710–0.512925) and 87Sr/86Sr (0.70288–0.70561) suggesting heterogeneities at various scales in the mantle source, with respective

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9dbdcfb7e80b0b6cf4e94f85fe45dbb4
https://doi.org/10.1016/0012-821x(87)90114-2