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Abstract Details

U-Series Ages of Young Tengchong Volcanoes, Southeast Tibetan Plateau

Zou H, Guo Z, Peng Y, Schmitt A, Fan Q, Zhao Y & Ma M

Zou H, Guo Z, Peng Y, Schmitt A, Fan Q, Zhao Y & Ma M (2020) Goldschmidt Abstracts, 2020 3234

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05d: Room 2, View in program

Haibo Zou
Zipei Guo
Yang Peng
Axel K. Schmitt View all 4 abstracts at Goldschmidt2020
Qicheng Fan
Yongwei Zhao
Mingjia Ma

Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.

Submitted by Lucy McGee on
Hi Haibo - nice to e-meet you and excited to see some U-Th-Ra data being presented. I have some questions about your U-series data. You have quite substantial Ra excesses in the whole rock data, but I noticed your WR data point on your zircon plots is on the equiline for U-Th. Do you have any idea why that might be? We saw the same thing in our dataset from Montserrat (U-Th in equilibrium but Ra excesses present). Also, I get that the blue model line on your Ra/Th vs Th/U plot is the maximum age based on the half life of Ra but I didn't quite get where the red model line was from. Thanks! Lucy

Submitted by Haibo Zou on
Thanks Lucy! Good questions. The whole rocks have 4 to 11% 230Th excesses. Because of the large range with zircon U-Th data and relatively small 230Th excesses, the whole rocks seem to plot on the equiline. The red line assumes initial (226Ra/230Th) ratio of 3.5. Hope that I answered your questions.

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