Current status and future direction of MALT, The University of Tokyo

Historic 1771 Meiwa tsunami confirmed by high‐resolution U/Th dating of massive Porites coral boulders at Ishigaki Island in the Ryukyus, Japan

“… Suzuki et al [2008] examined coral skeletal samples by X‐ray diffraction analysis to confirm that the coral aragonite was well preserved. The 14 C measurements were done with a Micro Analysis Laboratory Tandem Accelerator (MALT), The University of Tokyo [ Matsuzaki et al , 2004; Yokoyama et al , 2007]. 230 Th dating was performed with a multicollector inductively coupled plasma mass spectrometer (MC‐ICP‐MS, Thermo‐Finnigan Neptune) at the Minnesota Isotope Laboratory, University of Minnesota.…”

Holocene reef-growth dynamics on Kodakara Island (29°N, 129°E) in the Northwest Pacific

“…These samples were then converted into CO 2 via acidification with H 3 PO 4 and finally converted into graphite using H 2 as a reducing agent and Fe powder as a catalyst (Yokoyama et al, 2007). The 14 C/ 13 C and 14 C/ 12 C ratios of the graphite were measured using tandem AMS at the Micro Analysis Laboratory Tandem Accelerator, University of Tokyo (Matsuzaki et al, 2004). These samples were also partially dated at Beta Analytic Co., FL, USA.…”

Long-term denudation rates of actively uplifting hillcrests in the Boso Peninsula, Japan, estimated from depth profiling of in situ-produced cosmogenic 10Be and 26Al

“…The 10 Be/ 9 Be and 26 Al/ 27 Al ratios in the samples were measured by accelerator mass spectrometry (AMS) at MALT (Micro Analysis Laboratory, Tandem accelerator), the University of Tokyo (Matsuzaki et al, 2004). The ratios were normalized according to reference standards consisting of diluted ICN (ICN Biomedical, Inc.) 10 Be and NIST (National Institute of Standards and Technology) 26 Al.…”