Journal ArticleDOI
The stratigraphy, chronology and distribution of distal marker-tephras in and around Japan
Hiroshi Machida
- Vol. 21, Iss: 1, pp 71-94
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TLDR
A comprehensive overview of Japanese tephrochronology with emphasis on the role of distal tephras in Quaternary studies can be found in this paper, where an overview of the application of tephra in determining the nature and effects of explosive eruptions is presented.Abstract:
This paper forms an overview of Japanese tephrochronology with emphasis on the role of distal tephras in Quaternary studies. Recent developments in tephra characterisation techniques and dating methods have provided fruitful results in the correlation and identification of many Japanese tephras. Since the middle 1970s, many distal tephras have been discovered occurring both in the Japan islands and the surrounding seas. This has resulted in the introduction, revision and refinement of regional stratigraphy, the application of tephra in determining the nature and effects of explosive eruptions, and new applications to many aspects of Quaternary studies. Ongoing tephra research is fed into tephra catalogue for the Japan region giving fundamental data for land–sea correlation and for establishment of chronostratigraphic framework for Japanese Quaternary studies.read more
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Journal ArticleDOI
Identification and correlation of visible tephras in the Lake Suigetsu SG06 sedimentary archive, Japan: chronostratigraphic markers for synchronising of east Asian/west Pacific palaeoclimatic records across the last 150 ka
Victoria C. Smith,Richard A. Staff,Simon Blockley,Christopher Bronk Ramsey,Takeshi Nakagawa,Darren F. Mark,Keiji Takemura,Toru Danhara +7 more
TL;DR: In this paper, the authors describe and characterise these tephras based on major element glass composition, which is useful for the identification and correlation of these tectras and the age models of the records in which they are found.
Journal ArticleDOI
Clay mineral evolution in the central Okinawa Trough since 28 ka: Implications for sediment provenance and paleoenvironmental change
TL;DR: In this paper, the authors reconstruct the evolution of clay mineral assemblages in core DGKS9604 retrieved from the central Okinawa Trough and find that the average contents above 60% of the core clay mineral compositions were derived from the Changjiang River mouth.
Journal ArticleDOI
Provenance discrimination of siliciclastic sediments in the middle Okinawa Trough since 30 ka: Constraints from rare earth element compositions
TL;DR: In this article, rare earth elements (REE) were used to investigate provenance changes in sediments from Core DGKS9604, taken from the middle Okinawa Trough, and discrimination plots based on REE fractionation parameters suggest that the cored sediments have variable provenances over the last 30 ka, with the lower part (ca. 31-8.2 ka) ultimately originating mostly from the Changjiang (Yangtze River) and the upper part (7.1-0 ka) primarily from Taiwan.
Journal ArticleDOI
Stratigraphy and chronology of a 15 ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand
TL;DR: In this paper, the authors document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c. 18 000 calendar years) at a montane site (Kaipo Bog) in eastern North Island, New Zealand.
Journal ArticleDOI
Provenance weathering and erosion records in southern Okinawa Trough sediments since 28ka: Geochemical and Sr–Nd–Pb isotopic evidences
Yanguang Dou,Shouye Yang,Xuefa Shi,Peter D. Clift,Shengfa Liu,Jihua Liu,Chao Li,Lei Bi,Yun Zhao +8 more
TL;DR: In this article, geochemical and isotopic compositions of the detrital sediments from ODP Hole 1202B and Taiwan rivers were measured to reveal changes in sediment provenance in the southern Okinawa Trough (SOT) since 28-ka, and to examine the weathering and sediment transport processes in response to monsoon climate variability.
References
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