Article-Journal | Keita Itano - Academic Portfoliohttps://keitaitano.github.io/portfolio/publication_types/article-journal/Article-JournalHugoBlox Kit (https://hugoblox.com)en-usMon, 31 Mar 2025 00:00:00 +0000https://keitaitano.github.io/portfolio/media/icon_hu_48576da7a607172d.pngArticle-Journalhttps://keitaitano.github.io/portfolio/publication_types/article-journal/Evaluation of Matrix Effects in SIMS Using Gaussian Process Regression: The Case of Olivine Mg Isotope Microanalysishttps://keitaitano.github.io/portfolio/publications/rcms2025/Mon, 31 Mar 2025 00:00:00 +0000https://keitaitano.github.io/portfolio/publications/rcms2025/<h3 id="key-highlights">Key Highlights</h3> <ul> <li><strong>Uncertainty Quantification:</strong> Demonstrates the application of Gaussian process regression (GPR) to correct SIMS matrix effects while providing quantitative prediction uncertainties.</li> <li><strong>Minor Element Impact:</strong> Reveals that minor elements in olivine (Ca, Cr, Mn) independently impact instrumental mass fractionation (IMF) during SIMS Mg isotope analysis.</li> </ul>Detrital monazite evidence for crustal evolution of the North and South American continents during the Boring Billionhttps://keitaitano.github.io/portfolio/publications/chemicalgeology2024/Thu, 05 Dec 2024 00:00:00 +0000https://keitaitano.github.io/portfolio/publications/chemicalgeology2024/<h3 id="key-highlights">Key Highlights</h3> <ul> <li><strong>Crustal Evolution:</strong> Reconstructs the tectonic and magmatic history of North and South America during the middle Proterozoic (&ldquo;Boring Billion&rdquo;) using detrital monazite proxy.</li> <li><strong>Multi-proxy Approach:</strong> Combines U–Pb geochronology and trace element geochemistry of detrital monazites to trace metamorphic and igneous thermal events.</li> </ul>A long-lived mafic magma reservoir: Zircon evidence from a hornblende peridotite in the Hida Belt, Japanhttps://keitaitano.github.io/portfolio/publications/geology2023/Wed, 11 Oct 2023 00:00:00 +0000https://keitaitano.github.io/portfolio/publications/geology2023/<h3 id="key-highlights">Key Highlights</h3> <ul> <li><strong>Magma Reservoir Longevity:</strong> Zircon age ranges demonstrate that mafic magma reservoirs can persist for up to ~10⁷ years.</li> <li><strong>Crustal Evolution:</strong> Highlights the role of mantle-derived mafic magmas in sustaining magma systems and shaping island arc crustal evolution.</li> </ul>