The Origin, Evolution, and Environmental Impact of Oceanic Large Igneous Provinces

Lithium isotope evidence for magmatic assimilation of hydrothermally influenced crust beneath oceanic large igneous provinces
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Published:May 01, 2015
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CiteCitation
Takashi Sano, Yoshiro Nishio, 2015. "Lithium isotope evidence for magmatic assimilation of hydrothermally influenced crust beneath oceanic large igneous provinces", The Origin, Evolution, and Environmental Impact of Oceanic Large Igneous Provinces, Clive R. Neal, William W. Sager, Takashi Sano, Elisabetta Erba
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Fresh basalts from the Ontong Java Plateau (OJP) and the Shatsky Rise show lithium enrichments comparable to those of mid-oceanic ridge basalts (MORBs) and ocean island basalts (OIBs), with Li contents being significantly higher at a given MgO content. The Li isotopic compositions of the Shatsky Rise basalts (δ7Li = +6‰ to +7‰) are at the higher end of the range exhibited by OIBs, whereas OJP basalts (δ7Li = +3‰ to +5‰) have Li isotopic compositions similar to MORBs. Among all the basalts from the two oceanic large igneous provinces (LIPs), one sample from the Shatsky...
- alkali metals
- assimilation
- basalts
- chemical composition
- crust
- Expedition 324
- hafnium
- Hf-177/Hf-176
- igneous rocks
- Integrated Ocean Drilling Program
- IODP Site U1346
- IODP Site U1347
- IODP Site U1349
- IODP Site U1350
- isotope ratios
- isotopes
- large igneous provinces
- Li-7/Li-6
- lithium
- magma chambers
- magmas
- metals
- mid-ocean ridge basalts
- Nd-144/Nd-143
- neodymium
- North Pacific
- Northwest Pacific
- ocean-island basalts
- Ontong Java Plateau
- Pacific Ocean
- rare earths
- Shatsky Rise
- slabs
- stable isotopes
- volcanic rocks
- West Pacific