Document of bibliographic reference 319753

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Radiocarbon age offsets of plants and shells in Holocene sediments from the Sukumo plain, southwest coast of Shikoku, southwest Japan

Abstract

To identify chronological changes in the marine reservoir effect in southwest Japan, the radiocarbon ages of eight pairs of marine shells and terrestrial plants were measured from the same horizons of one core of Holocene sediments. This core was obtained from the northern part of the Sukumo Plain in southwestern Shikoku Island, which faces the warm Kuroshio Current. The drilling site is located in an area of subsidence associated with the convergence of the Philippine Sea Plate and the Eurasian Plate. On analyses of lithology, molluscan assemblages, and radiocarbon dating, we interpreted, from oldest to youngest, nine units: basement rock, a braided river channel, a meandering river channel, an estuary, a transgressive inner bay, Kikai-Akahoya volcanic ash, a deltaic inner bay, a tidal flat, and artificial soil. Changes in the depositional environment were mainly associated with sea-level rise after the end of the last glaciation. The reservoir ages of the eight pairs, 330 ± 70 yr, were obtained from a transgressive inner bay to deltaic inner bay sediments, formed during 4100–9200 cal BP. The chronological change in the reservoir effect allows us to correlate the Sukumo Core sediments with previous results from southwestern Japan, the Korean Peninsula, and Taiwan Island.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000504752800031

Bibliographic citation

Nakanishi, T.; Tsuji, T.; Nanayama, F.; Yamaguchi, T.; Kondo, Y.; Ikeda, M.; Hong, W. (2019). Radiocarbon age offsets of plants and shells in Holocene sediments from the Sukumo plain, southwest coast of Shikoku, southwest Japan. Radiocarbon 61(6): 1951-1961. https://dx.doi.org/10.1017/rdc.2019.129

Topic

Marine

Is peer reviewed

true

Access rights

open access

Is accessible for free

true