Natsue Abe

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Volcanism on Earth is known to occur in three tectonic settings: divergent plate boundaries (such as mid-ocean ridges), convergent plate boundaries (such as island arcs), and hot spots. We report volcanism on the 135 million-year-old Pacific Plate not belonging to any of these categories. Small alkalic volcanoes form from small percent melts and originate(More)
Three-quarters of the oceanic crust formed at fast-spreading ridges is composed of plutonic rocks whose mineral assemblages, textures and compositions record the history of melt transport and crystallization between the mantle and the sea floor. Despite the importance of these rocks, sampling them in situ is extremely challenging owing to the overlying(More)
Hydroxyapatite (HAp) is a biological and bioactive material, which has promise as a coating material for orthopedic and dental implants. Some HAp coating methods have been investigated and the pulsed laser deposition (PLD) method is one of the most candidate. Previous PLD researchers deposited the HAp coatings on heated Ti and Ti-alloy substrates in order(More)
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