A PRELIMINARY DISCUSSION ON FEASIBILITY USING THERMALLY TRANSFERRED OPTICALLY STIMULATED LUMINESCENCE (TT-OSL) METHOD TO DATE THE FINE-GRAIN QUARTZ EXTRACTED FROM GANZI LOESS

ZHANG Ke-qi

Volume 19 Issue 3

Sep. 2013

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Article Navigation > Journal of Geomechanics > 2013 > 19(3): 287-294

ZHANG Ke-qi, 2013. A PRELIMINARY DISCUSSION ON FEASIBILITY USING THERMALLY TRANSFERRED OPTICALLY STIMULATED LUMINESCENCE (TT-OSL) METHOD TO DATE THE FINE-GRAIN QUARTZ EXTRACTED FROM GANZI LOESS. Journal of Geomechanics, 19 (3): 287-294.

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A PRELIMINARY DISCUSSION ON FEASIBILITY USING THERMALLY TRANSFERRED OPTICALLY STIMULATED LUMINESCENCE (TT-OSL) METHOD TO DATE THE FINE-GRAIN QUARTZ EXTRACTED FROM GANZI LOESS

ZHANG Ke-qi

Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

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Abstract

Abstract

This paper attempts to date the loess from Ganzi area, Sichuan province, using a new method-TT-OSL protocol for OSL dating. A preliminary experimental study was conducted loess from the Ganzi-A section. Testing result showed that the naturally recuperated OSL signal intensity increases with depth of stratum, being obvious accumulation. A 'replacement plot' analysis was applied to test the reliability of the TT-OSL protocol and showed a nice result. The D_e values of 3 samples were measured by SMAR and TT-OSL protocols, respectively, and ages were calculated. The comparison between D_e-TTOSL and D_e-SMAR show the former was greater than that of the latter, and comparison between the ages is as well. However the ages of TT-OSL method is less than the expected value from magnetostratigraphy. Based on the results, the TT-OSL method was applied to fine-grained quartz extracted from the Ganzi loess. But the reliability of results from TT-OSL dating needed to be tested and verified by more independent ages.
- OSL dating,
- Ganzi loess,
- fine-grain quartz,
- TT-OSL protocol,
- SMAR protocol

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References

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