Low‐temperature thermochronological database of bedrock in the Japanese Islands

Abstract

To provide better access to thermochronological data and understand the long‐term denudation history of the Japanese Islands, we compiled a low‐temperature thermochronological dataset of fission‐track (FT) and (U–Th–Sm)/He (He) ages for apatite and zircon in bedrocks. These thermochronometric ages are compiled from 90 literature sources and 1,096 localities, and include 418 apatite FT ages, 851 zircon FT ages, 42 apatite He ages, and 30 zircon He ages. Many FT ages have been reported previously; however, the number of He ages is limited in the Japanese Islands. The compiled data are spatially biased; for instance, more data are reported for the Chubu and Kinki districts and the Pacific coast of the Shikoku Island, whereas less data were available for the Tohoku and Chugoku districts. For better understanding arc‐scale uplift‐denudation history, further thermochronological research in the lesser‐studied regions and more He thermochronometric measurements are desired. This compilation will be updated and provided on the website of the Fission‐Track Research Group in Japan (http://ftrgj.org/index.html).

The phylogeography of the stag beetle Dorcus montivagus (Coleoptera, Lucanidae): Comparison with the phylogeography of its specific host tree, the Japanese beech Fagus crenata

“…1). It is estimated that uplift of mountains was actively occurring in the Southern Japanese Alps about 1.4-1.0 Ma and in the Central Japanese Alps at about 0.8-0.6 Ma (Suganuma et al 2003;Sueoka et al 2015). In the Northern Japanese Alps, it is also estimated that uplift of mountains actively occurred in multiple stages around 2.5-1.5 Ma and 0.8 Ma (Oikawa 2003;Harayama 2015).…”