Details

Autor(en) / Beteiligte

• Nirei, Takashi
• Hongo, Misao

Titel

Pollen biostratigraphy of the Early-Middle Pleistocene in central Japan

Ist Teil von

• The Quaternary Research (Daiyonki-Kenkyu), 2018/10/01, Vol.57(5), pp.143-155

Ort / Verlag

Japan Association for Quaternary Research

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• The pollen biostratigraphy of the late Early to the Middle Pleistocene in Central Japan comprises five superbiozones : the Quercus-Metasequoia, the Fagus-Quercus, the Cryptomeria-Fagus, the Cyclobalanopsis-Cupressaceae, and the Pinaceae-Cryptomeria Superbiozones, in ascending order. These superbiozones were established by pollen biohorizons and association of paleovegetation. Pollen biohorizons were recognized by organizing the correspondence between local pollen zones from 8 sites and oxygen marine isotope stages. The framework of paleovegetation changed step by step at about the same time as terminations of oxygen isotope stratigraphy. In particular, paleovegetation was warm-temperate deciduous broad-leaved forest accompanied by Neogene elements (for example Metasequoia) during the depositional period of the Quercus-Metasequoia Superzone (below Termination X), warm-temperate deciduous broad-leaved forest accompanied by temperate evergreen conifer during the depositional period of the Fagus-Quercus Superzone (Termination X to VII), warm-temperate deciduous broad-leaved forest with few Quercus accompanied by temperate evergreen conifers during the depositional period of the Cryptomeria-Fagus Superzone (Termination VII to V), warm-temperate evergreen broad-leaved forest during the depositional period of the Cyclobalanopsis-Cupressaceae Superzone (Termination V to IV), and temperate evergreen coniferous forest accompanied by deciduous broad-leaved forest with many Pinaceae conifers during the depositional period of the Pinaceae-Cryptomeria Superzone (above Termination IV).