Search Results - "Lassiter, J.C."

PGE and Os-isotopic variations in lavas from Kohala Volcano, Hawaii: Constraints on PGE behavior and melt/crust interaction by Jamais, M., Lassiter, J.C., Brügmann, G.

“…We have examined Re, Platinum-Group Element (PGE) and Os-isotope variations in suites of variably fractionated lavas from Kohala Volcano, Hawaii, in order to…”
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Osmium-isotope variations in Hawaiian lavas: evidence for recycled oceanic lithosphere in the Hawaiian plume by Lassiter, J.C., Hauri, E.H.

“…Isotopic heterogeneity in Hawaiian shield lavas reflects the presence of two distinct recycled components in the Hawaiian plume, both from the same packet of…”
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Rhenium volatility in subaerial lavas: constraints from subaerial and submarine portions of the HSDP-2 Mauna Kea drillcore by Lassiter, J.C

“…High Re abundances in mid-ocean ridge basalts (MORB) relative to primitive mantle (ave. MORB[Re]≈930 ppt; PM[Re]≈260 ppt) indicate that Re behaves as an…”
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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 by Lassiter, J.C, Blichert-Toft, J, Hauri, E.H, Barsczus, H.G

“…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…”
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Chlorine–potassium variations in melt inclusions from Raivavae and Rapa, Austral Islands: constraints on chlorine recycling in the mantle and evidence for brine-induced melting of oceanic crust by Lassiter, J C, Hauri, E H, Nikogosian, I K, Barsczus, H G

“…Chlorine abundance variations in oceanic basalts can provide insights into the degassing and volatile recycling history of the mantle as well as shallow…”
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Generation of Hawaiian post-erosional lavas by melting of a mixed lherzolite/pyroxenite source by Lassiter, J.C, Hauri, E.H, Reiners, P.W, Garcia, M.O

“…Melting of mafic veins in a marble-cake mantle may play an important role in generating isotopic and chemical heterogeneities in mid-ocean ridge and ocean…”
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Tracking subduction-related metasomatism of the subcontinental lithospheric mantle using Ca-, O-, and H-isotopes by Brooker, S.E., Barnes, J.D., Lassiter, J.C., Satkoski, A., Pearson, D.G.

“…Mantle xenoliths provide effective records of the metasomatic processes that affect continental lithosphere evolution, such as interaction with subducted…”
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Constraints from Os-isotope variations on the origin of Lena Trough abyssal peridotites and implications for the composition and evolution of the depleted upper mantle by Lassiter, J.C., Byerly, B.L., Snow, J.E., Hellebrand, E.

“…The Lena Trough is a highly oblique, sparsely magmatic, ultra-slow spreading center located at the smallest distance between North America and Eurasia in the…”
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Constraints on the age of the Earth’s inner core and the origin of the 186Os/ 188Os “core signal” in plume-derived lavas by Lassiter, J.C.

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Intermittent mixing processes occurring before Plinian eruptions of Popocatepetl volcano, Mexico: insights from textural–compositional variations in plagioclase and Sr–Nd–Pb isotopes by Sosa-Ceballos, G., Gardner, J. E., Lassiter, J. C.

“…Volcán Popocatépetl has explosively erupted in Plinian style at least five times in the last 23,000 years. Extreme deviations in composition and the occurrence…”
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Constraints on the coupled thermal evolution of the Earth's core and mantle, the age of the inner core, and the origin of the 186Os/ 188Os “core signal” in plume-derived lavas by Lassiter, J.C.

“…The possibility that some mantle plumes may carry a geochemical signature of core/mantle interaction has rightly generated considerable interest and attention…”
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