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40Ar/39Ar isotopic ages of Qitianling granite and their geologic implications

✍ Scribed by Liu Yimao; Xu Jifeng; Dai Tongmo; Li Xianhua; Deng Xiguang; Wang Qiang


Book ID
111783932
Publisher
Science in China Press (SCP)
Year
2003
Tongue
English
Weight
157 KB
Volume
46
Category
Article
ISSN
1674-7313

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40Ar-39Ar ages of scandinavian impact st
✍ R. J. Bottomley; D. York; R. A. F. Grieve πŸ“‚ Article πŸ“… 1978 πŸ› Springer 🌐 English βš– 818 KB

## 4~ ages have been obtained on samples of impact melt from the Lake Mien and Siljan hypervelocity impact structures in Sweden. Two samples of "rhyolite'" from Lake Mien yield a plateau age of 118.7 + 2.3 m.y., which is consistent with earlier conventional K-Ar results. Two melt samples from a di