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| Comparison of Equivalent Doses Obtained with Various post-IR IRSL Dating Protocols of K-Feldspar | |
| Zhang, Junjie1; Li, Sheng-Hua1; Wang, Xulong2; Hao, Qingzhen3,4,5; Hu, Guiming1; Chen, Yiwei6 | |
| Corresponding Author | Li, Sheng-Hua(shli@hku.hk) |
| 2021 | |
| Source Publication | GEOCHRONOMETRIA
 |
| ISSN | 1897-1695 |
| Volume | 48Issue:1Pages:129-137 |
| Abstract | Five dating protocols with post-infrared infrared (IR) stimulated luminescence signals (i.e. pIRIR) were performed on the K-feldspar of loess samples. Two of them were the single-aliquot regenerative-dose protocol (SAR) with two-step pIRIR stimulation, with the first IR stimulation at 50 degrees C or 200 degrees C and the second at 290 degrees C (pIR(50)IR(290), pIR(200)IR(290)). Two of them were the SAR protocols with five-step or six-step IR stimulation at multiple elevated temperatures to 250 degrees C or 300 degrees C (MET-pIRIR(250), MET-pIRIR(300)). The final one was the multiple-aliquot regenerative-dose (MAR) protocol with the MET-pIRIR(300) signal, together with a 500 degrees C heat treatment administered before the test dose ('MAR with heat'). The results show that when the equivalent dose (D-e) of the sample was less than 500 Gy, all of the protocols gave consistent results; however, when D-e exceeded 750 Gy, all of the SAR protocols underestimated D-e. The pIR(50)IR(290) signal had the highest degree of underestimation, while the pIR(200)IR(290), MET-pIRIR(250) and MET-pIRIR(300) signals had similar D-e values and similar degrees of underestimation. Possible reasons for the SAR D-e underestimation are discussed. We suggest that only the 'MAR with heat' protocol is suitable for samples with D-e exceeding 750 Gy. |
| Keyword | Chinese loess Potassium feldspar pIRIR protocols age underestimations |
| DOI | 10.2478/geochr-2020-0010 |
| WOS Keyword | INFRARED-STIMULATED LUMINESCENCE ; GROWTH CURVE GSGC ; MET-PIRIR SIGNALS ; SENSITIVITY CHANGE ; CHINESE LOESS ; QUARTZ ; SEDIMENTS ; RATES |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | Research Grant Council of the Hong Kong SAR, China[17303014] ; Research Grant Council of the Hong Kong SAR, China[17307117] |
| WOS Research Area | Geology |
| Funding Organization | Research Grant Council of the Hong Kong SAR, China |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000741324800002 |
| Publisher | SCIENDO |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ieecas.cn/handle/361006/17380 |
| Collection | 中国科学院地球环境研究所 |
| Corresponding Author | Li, Sheng-Hua |
| Affiliation | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Junjie,Li, Sheng-Hua,Wang, Xulong,et al. Comparison of Equivalent Doses Obtained with Various post-IR IRSL Dating Protocols of K-Feldspar[J]. GEOCHRONOMETRIA,2021,48(1):129-137. |
| APA | Zhang, Junjie,Li, Sheng-Hua,Wang, Xulong,Hao, Qingzhen,Hu, Guiming,&Chen, Yiwei.(2021).Comparison of Equivalent Doses Obtained with Various post-IR IRSL Dating Protocols of K-Feldspar.GEOCHRONOMETRIA,48(1),129-137. |
| MLA | Zhang, Junjie,et al."Comparison of Equivalent Doses Obtained with Various post-IR IRSL Dating Protocols of K-Feldspar".GEOCHRONOMETRIA 48.1(2021):129-137. |
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