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DOI | 10.2478/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
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ISSN | 1733-8387 |
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 |
推荐引用方式 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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