A new constraint for Matuyama-Brunhes geomagnetic boundary age based on U-Pb zircon dating and a high-resolution oxygen isotope chronology in highly resolved marine sediments in Japan

Yusuke Suganuma1, Makoto Okada2, Yuuki Haneda2, Kenji Horie1 and Osamu Kazaoka3, (1)NIPR National Institute of Polar Research, Tokyo, Japan, (2)Ibaraki University, Mito, Japan, (3)Research Institute of Environmental Geology, Chiba, Japan