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A luminescence-derived cryptostratigraphy from the Lake Suigetsu sedimentary profile, Japan: 45,000–30,200 IntCal20 yr BP

Urheber*innen

Staff,  Richard A.
External Organizations;

Sanderson,  David C.W.
External Organizations;

Rex,  Charlie L.
External Organizations;

Cresswell,  Alan
External Organizations;

Hyodo,  Masayuki
External Organizations;

Kitaba,  Ikuko
External Organizations;

Marshall,  Michael H.
External Organizations;

/persons/resource/gosch

Schlolaut,  Gordon
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Yamada,  Keitaro
External Organizations;

Suzuki,  Yoshiaki
External Organizations;

Nowinski,  Vanessa
External Organizations;

Tada,  Ryuji
External Organizations;

Nakagawa,  Takeshi
External Organizations;

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5027689.pdf
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Zitation

Staff, R. A., Sanderson, D. C., Rex, C. L., Cresswell, A., Hyodo, M., Kitaba, I., Marshall, M. H., Schlolaut, G., Yamada, K., Suzuki, Y., Nowinski, V., Tada, R., Nakagawa, T. (2024): A luminescence-derived cryptostratigraphy from the Lake Suigetsu sedimentary profile, Japan: 45,000–30,200 IntCal20 yr BP. - Quaternary Geochronology, 83, 101588.
https://doi.org/10.1016/j.quageo.2024.101588


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5027689
Zusammenfassung
The luminescence characteristics of sediments are affected by a variety of environmental factors, reflecting both local and broader regional influences. If seeking to apply stimulated luminescence as a ‘pure’ dating technique, variability in these external variables needs to be controlled for, involving, inter alia, lengthy pretreatment procedures and complex dose rate corrections. However, in so doing, a lot of potentially valuable palaeoenvironmental information is lost. Instead, in the present study, we explicitly analysed raw, non-pretreated sediment that preserves this wealth of contributory environmental influence. Using a SUERC portable luminescence (POSL) reader, we performed rapid profiling across a 14,800 year interval of the annually laminated (varved) Lake Suigetsu sedimentary profile, central Japan (i.e., 45,000 to 30,200 IntCal20 yr BP), producing 303 contiguous measurements with a mean sampling resolution of 49 years. To further inform our understanding of this dataset, additional follow-up laboratory dosing was performed to provide sensitivity estimates. The ‘cryptostratigraphy’ (‘hidden stratigraphy’) revealed by our data includes the identification of a step-change in luminescence parameters circa 39,200 IntCal20 yr BP, which we attribute to a major earthquake that resulted in re-routing of inflow to the lake. Further variability in the derived luminescence signals is compared with supporting high resolution x-ray fluorescence (μXRF) data and palynological data from Lake Suigetsu. A correlation between the luminescence profile (both net infra-red-stimulated and net blue light-stimulated signals) and mean annual temperature is revealed, mediated through subtle differences in sediment characteristics under warmer or cooler climatic conditions.