Acta Photonica Sinica, Volume. 47, Issue 8, 847009(2018)
Determination of Terrestrial and Marine Sedimentary Rocks by Laser-induced Breakdown Spectroscopy
This paper mainly investigates the ability of laser-induced breakdown spectroscopy to discriminate the sedimentary facies of untreated rock samples. Twenty-seven continental and 14 marine sediment samples identified by geologists were used as samples to be analyzed. The line intensity of B, the integral intensity ratio of B/Ga, Sr/Ba, and Fe/Mn lines are used as the discrimination basis for discriminating the deposition phase. Because B, Ga, Sr, and Ba are very low in the rock and are not evenly distributed, a small amount of sample is difficult to distinguish. The content of Fe and Mn is relatively high, so Fe/Mn can distinguish the terrestrial and marine sediment samples well. Overall, the best distinguishing performance was exhibited with respect to other discrimination based on Fe II 259.940 nm/Mn II 259.372 nm. The results show that laser-induced breakdown spectroscopy can quickly and accurately discriminate the sedimentary facies of rock samples at the logging site.
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SHE Ming-jun, FU Hong-bo, JIA Jun-wei, WANG Hua-dong, DONG Feng-zhong. Determination of Terrestrial and Marine Sedimentary Rocks by Laser-induced Breakdown Spectroscopy[J]. Acta Photonica Sinica, 2018, 47(8): 847009
Received: Jun. 11, 2018
Accepted: --
Published Online: Sep. 16, 2018
The Author Email: Ming-jun SHE (ymsmj2007@126.com)