Mathematics – Logic
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30tsde9k&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 20, pp. SDE 9-1, CiteID 2053, DOI 10.1029/2003GL018462
Mathematics
Logic
1
Geochemistry: Composition Of The Mantle, Geochemistry: Isotopic Composition/Chemistry, Oceanography: Biological And Chemical: Geochemistry, Information Related To Geographic Region: Indian Ocean, Volcanology: Planetary Volcanism (5480)
Scientific paper
Previous studies showed that the Rajmahal-Sylhet-Bengal (RSB) flood basalt province (117 +/- 2 Ma) in eastern India was spatially close to the active Kerguelen hotspot about 118 Ma ago. Yet, it could not be unequivocally correlated to this hotspot due to wide variation in isotopic compositions of both the RSB and Kerguelen plateau basalts. However, we report Sr-Nd-Pb isotopic compositions (87Sr/86Sri: 0.70535 to 0.70561; ɛNd(T): -2.6 to -3.2 206Pb/204Pbi: 17.88 to 18.07) of a co-eval (116 +/- 2 Ma) Group II kimberlite from this flood basalt province that is identical to recently identified pristine Kerguelen plume basalts from the Kerguelen Plateau/Archipelago and Broken Ridge. This suggests that the Kerguelen hotspot could indeed be responsible for the ~117 Ma magmatic activity in Eastern India.
Dayal A. M.
Kumar Anil
Padmakumari V. M.
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