Abstract
Abstarct Numerous widespread tephra layers of late Pleistocene and Holocene age have been known since the early 1970s and greatly contribute to palaeoenvironmental reconstruction in the Japan islands and adjacent seas. However, the mapping of older tephra deposits has developed more slowly. Recent progress in describing many tephras occurring in the Pliocene and early Pleistocene uplifted marine and terrestrial deposits has resulted both from developments in the characterization of their component phases, their radiometric and geomagnetic dating and from an enhanced knowledge of their distribution. This study has constructed tephra correlations using the trace element composition of volcanic glass determined by ICP-AES analysis. Consequently, many widespread tephra layers of Pliocene and early Pleistocene age have been identified and can now be correlated extensively in central Japan. This paper catalogs these tephras, and provides the fundamental criteria for the establishment of a regional Pliocene–Pleistocene chronostratigraphy in central Japan.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
