Lake Suigetsu varved sediment project: terrestrial radiocarbon calibration model and inter-regional comparison of climate changes
Lead Research Organisation:
Aberystwyth University
Department Name: Inst of Geography and Earth Sciences
Abstract
Long term records of atmospheric radiocarbon provide a wealth of information, both as records of carbon cycling in the environment and as a basis for all 14C dating. The Holocene atmospheric radiocarbon record is provided by tree rings and is considered to be (almost) robust. However, that of the period from 12,410 to c.26,000 BP is based on marine sediments which are influenced by the marine reservoir effect. Also, the corresponding information for the atmosphere for the period 26,000 to 50,000 BP is lacking. This project will establish a radiocarbon calibration model for the Late Pleistocene (10,000 / 50,000 BP) based on terrestrial material, mostly deciduous tree leaf fossils which are free from marine reservoir effects, recovered from the annually laminated lacustrine sediments of Lake Suigetsu, Japan. The project will also produce quantitatively reconstructed climate changes of the Monsoon regions for the last 150,000 yeas using high or ultra-high resolution pollen records. The profile will be established using tie-points such as geomagnetic excursions and tephra layers. The project will therefore contribute to international scientific endeavour in using radiocarbon-based information to determine the timing and rates of environmental changes, as well as understanding past changes in the global carbon cycle. The project will also contribute to hypothesis testing about the causal mechanisms of climate change, especially concerning the relative timing of D/O events in Asia, North Atlantic, Antarctica and many other marine and terrestrial records through the last glacial-interglacial cycle.
Organisations
People |
ORCID iD |
Henry Lamb (Principal Investigator) |
Publications
Schlolaut G
(2017)
Evidence for a bi-partition of the Younger Dryas Stadial in East Asia associated with inversed climate characteristics compared to Europe.
in Scientific reports
Blinkhorn J
(2021)
Explanations of variability in Middle Stone Age stone tool assemblage composition and raw material use in Eastern Africa
in Archaeological and Anthropological Sciences
Schäbitz F
(2016)
First results from the deep drilling at Chew Bahir (S-Ethiopia)
in Quaternary International
Darbyshire I
(2016)
Forest clearance and regrowth in northern Ethiopia during the last 3000 years
in The Holocene
Roberts H
(2018)
Generating long chronologies for lacustrine sediments using luminescence dating: a 250,000 year record from Lake Tana, Ethiopia
in Quaternary Science Reviews
Prave A
(2016)
Geology and geochronology of the Tana Basin, Ethiopia: LIP volcanism, super eruptions and Eocene-Oligocene environmental change
in Earth and Planetary Science Letters
Martin-Jones C
(2017)
Glass compositions and tempo of post-17 ka eruptions from the Afar Triangle recorded in sediments from lakes Ashenge and Hayk, Ethiopia
in Quaternary Geochronology
Telford R
(2017)
Groundwater-Mediated Response to Holocene Climatic Change Recorded by the Diatom Stratigraphy of an Ethiopian Crater Lake
in Quaternary Research
Schaebitz F
(2021)
Hydroclimate changes in eastern Africa over the past 200,000 years may have influenced early human dispersal
in Communications Earth & Environment
Staff R
(2016)
Integration of the Old and New Lake Suigetsu (Japan) Terrestrial Radiocarbon Calibration Data Sets
in Radiocarbon
Description | Extended the terrestrial radiocarbon calibration to 40,000 yrs ago |
Exploitation Route | In dating ancient organic materials with radiocabon |
Sectors | Environment,Culture, Heritage, Museums and Collections |
URL | http://www.suigetsu.org/embed.php?File= |
Description | Contribution to museum exhibits in Japan: major new varve museum at Wakasa, Japan |
First Year Of Impact | 2018 |
Sector | Environment,Culture, Heritage, Museums and Collections |
Impact Types | Cultural |