Dating deep sea sediments by means of optically stimulated luminescence and <sup>230</sup>Th, <sup>231</sup>Pa radionuclides

HE Lelong; JIANG Yunshui; HE Xingliang; CHANG Wenbo

doi:10.16028/j.1009-2722.2020.159

2022 Vol. 38, No. 4

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Article navigation > Marine Geology Frontiers > 2022 > 38(4): 80-84

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HE Lelong, JIANG Yunshui, HE Xingliang, CHANG Wenbo. Dating deep sea sediments by means of optically stimulated luminescence and 230Th, 231Pa radionuclides[J]. Marine Geology Frontiers, 2022, 38(4): 80-84. doi: 10.16028/j.1009-2722.2020.159

Citation:

HE Lelong, JIANG Yunshui, HE Xingliang, CHANG Wenbo. Dating deep sea sediments by means of optically stimulated luminescence and ²³⁰Th, ²³¹Pa radionuclides[J]. Marine Geology Frontiers, 2022, 38(4): 80-84. doi: 10.16028/j.1009-2722.2020.159

Dating deep sea sediments by means of optically stimulated luminescence and ²³⁰Th, ²³¹Pa radionuclides

Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China

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Corresponding author: JIANG Yunshui, yunshui888@163.com

Received Date: 30 September 2020

Accepted Date: 16 February 2022

Publish Date: 28 April 2022

Abstract

Abstract

When the two groups of deep-sea samples taking from the Bay of Bengal were analyzed for OSL dating, we found that the samples are high in ²³⁰Th,²³¹Pa radionuclides levels. After calculating the sedimentation rate of the samples with ²³⁰th_ex,²³¹pa_ex and ²³¹pa_ex / ²³⁰th_ex, it is found that the results obtained by the three methods are quite consistent. The average sedimentation rate of C3 is between 16.2 and 18.2 cm/ka and that of CB2 changes between 10.3 and 12.3 cm/ka. Compared with the OSL dating data, the average of the sedimentation rate values is consistent. The OSL dating suggest that the two groups of samples may have experienced a process of sedimentation rate acceleration.
- OSL /
- ²³⁰Th /
- ²³¹Pa /
- deep sea sediments /
- Bay of Bengal

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References

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