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DOI10.2478/v10003-010-0025-1
CHRONOLOGY OF CAUVERY DELTA SEDIMENTS FROM SHALLOW SUBSURFACE CORES USING ELEVATED-TEMPERATURE POST-IR IRSL DATING OF FELDSPAR
Alappat, L.1; Tsukamoto, S.1; Singh, P.2; Srikanth, D.2; Ramesh, R.3; Frechen, M.1
通讯作者Alappat, L.
来源期刊GEOCHRONOMETRIA
ISSN1733-8387
出版年2010
卷号37页码:37-47
英文摘要

We present the results of luminescence dating of sediments from two cores from the Cauvery Delta in south-east India. Since all natural quartz OSL signals except one sample were in saturation, the elevated temperature post-IR IRSL protocol for K-feldspar was applied to establish a chronology. Internal dose rates of K-feldspar grains were calculated from the measured internal content of potassium, uranium, thorium and rubidium in the bulk of K-feldspar grains using solution ICP-OES and ICP-MS analysis. A substantial scatter in single-aliquot D(e) values was observed which is most probably due to the effect of incomplete bleaching of fluvial sediments before burial. A minimum age model was applied to extract possible depositional ages. The study revealed that except an upper layer of Holocene sediments (< 5m), the majority of the upper similar to 50m of Cauvery delta sediments were deposited between marine isotope stage MIS-5 and MIS-10 or older. The feldspar luminescence ages also indicate the existence of a period of non deposition or erosion in the upper part of the cores.


英文关键词Cauvery delta fluvial sediments OSL dating elevated temperature IRSL K-feldspar
类型Article
语种英语
国家Germany ; India
收录类别SCI-E
WOS记录号WOS:000285978800006
WOS关键词OPTICALLY STIMULATED LUMINESCENCE ; SOUTH-INDIA ; FLUVIAL DEPOSITS ; SINGLE-GRAIN ; THAR DESERT ; TAMIL-NADU ; DOSE-RATE ; QUARTZ ; RIVER ; BASIN
WOS类目Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Geology ; Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/164281
作者单位1.LIAG, Sect Geochronol & Isotope Hydrol S3, D-30655 Hannover, Germany;
2.Pondicherry Univ, Sch Phys Chem & Appl Sci, Dept Earth Sci, Pondicherry 605014, India;
3.Anna Univ, Inst Ocean Management, Madras 600025, Tamil Nadu, India
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GB/T 7714
Alappat, L.,Tsukamoto, S.,Singh, P.,et al. CHRONOLOGY OF CAUVERY DELTA SEDIMENTS FROM SHALLOW SUBSURFACE CORES USING ELEVATED-TEMPERATURE POST-IR IRSL DATING OF FELDSPAR[J],2010,37:37-47.
APA Alappat, L.,Tsukamoto, S.,Singh, P.,Srikanth, D.,Ramesh, R.,&Frechen, M..(2010).CHRONOLOGY OF CAUVERY DELTA SEDIMENTS FROM SHALLOW SUBSURFACE CORES USING ELEVATED-TEMPERATURE POST-IR IRSL DATING OF FELDSPAR.GEOCHRONOMETRIA,37,37-47.
MLA Alappat, L.,et al."CHRONOLOGY OF CAUVERY DELTA SEDIMENTS FROM SHALLOW SUBSURFACE CORES USING ELEVATED-TEMPERATURE POST-IR IRSL DATING OF FELDSPAR".GEOCHRONOMETRIA 37(2010):37-47.
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