Collision Event during 177-135 Ma on the Eastern Margin of the Qinghai-Tibet Plateau: Evidence from 40Ar/ 39Ar Dating for Basalts on the Western Margin of the Yangtze Platform
Geochronology of continental flood basalts sampled from the Emei large igneous province (LIP) on the western margin of the Yangtze platform was investigated by the laser microprobe 40Ar/39Ar dating technique. These basalts yield a fairly wide range of 40Ar/39Ar ages, varying from 259 to 135 Ma. One...
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| Published in | Acta geologica Sinica (Beijing) Vol. 76; no. 2; pp. 194 - 204 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Oxford, UK
Blackwell Publishing Ltd
01.06.2002
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-9515 1755-6724 |
| DOI | 10.1111/j.1755-6724.2002.tb00085.x |
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| Abstract | Geochronology of continental flood basalts sampled from the Emei large igneous province (LIP) on the western margin of the Yangtze platform was investigated by the laser microprobe 40Ar/39Ar dating technique. These basalts yield a fairly wide range of 40Ar/39Ar ages, varying from 259 to 135 Ma. One basalt sample, at least altered, recorded the oldest 40Ar/39Ar age of about 259 Ma, corresponding to a peak eruption age of the Emei LIP continental flood basalts. Most of the samples yield much younger ages from 135 to 177 Ma, which are consistent with the K-Ar ages for the same samples (122.8-172.1 Ma). The dating data suggest that these Permian basalts had been widely affected by the regional tectonothermal event at 177-135 Ma. The event was probably caused by the convergence and collision among the Laurasia, Yangtze and Qiangtang-Qamdo continental blocks on the eastern margin of the Qinghai-Tibet plateau after the late Triassic. The age of the event reflects the timing of the peak collisional orogeny. |
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| AbstractList | Geochronology of continental flood basalts sampled from the Emei large igneous province (LIP) on the western margin of the Yangtze platform was investigated by the laser microprobe 40Ar/39Ar dating technique. These basalts yield a fairly wide range of 40Ar/39Ar ages, varying from 259 to 135 Ma. One basalt sample, at least altered, recorded the oldest 40Ar/39Ar age of about 259 Ma, corresponding to a peak eruption age of the Emei LIP continental flood basalts. Most of the samples yield much younger ages from 135 to 177 Ma, which are consistent with the K‐Ar ages for the same samples (122.8–172.1 Ma). The dating data suggest that these Permian basalts had been widely affected by the regional tectonothermal event at 177–135 Ma. The event was probably caused by the convergence and collision among the Laurasia, Yangtze and Qiangtang‐Qamdo continental blocks on the eastern margin of the Qinghai‐Tibet plateau after the late Triassic. The age of the event reflects the timing of the peak collisional orogeny. |
| Author | Zengqian, HOU Jiren, LU Wen, CHEN |
| AuthorAffiliation | Institute of Mineral Resources, Chinese Academy of Geological Sciences Beijing, 100037 Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037;3College of Earth Sciences, China University of Geosciences, Beijing 100029 Institute of Mineral Resources, Chinese Academy of Geological Sciences Beijing, 100037 |
| Author_xml | – sequence: 1 givenname: HOU surname: Zengqian fullname: Zengqian, HOU organization: Institute of Mineral Resources, Chinese Academy of Geological Sciences Beijing, 100037 – sequence: 2 givenname: CHEN surname: Wen fullname: Wen, CHEN organization: Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 – sequence: 3 givenname: LU surname: Jiren fullname: Jiren, LU organization: Institute of Mineral Resources, Chinese Academy of Geological Sciences Beijing, 100037 |
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| DocumentTitleAlternate | Collision Event during 177-135 Ma on the Eastern Margin of the Qinghai-Tibet Plateau: Evidence from 40Ar/ 39Ar Dating for Basalts on the Western Margin of the Yangtze Platform |
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| Notes | 11-2001/P P5 istex:4A4CD2EFB812CEC18501BE6085E78E48694D10A1 ArticleID:ACGS85 ark:/67375/WNG-JM4QPBJ9-H Born in June, 1961; graduated from the specialty of geology, Hebei College of Geology in 1982. He got his master's degree and Ph.D. at China University of Geosciences in 1985 and 1988, respectively. His main interests include volcanism, submarine thermal waters and related metallogenesis. He has made marked achievements in his research and published a number of monographs and dozens of scientific papers. |
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D., 1990. 40Ar/39Ar mineral age constraints for the tectonothermal evolution of the Sambagawa metamorphic belt, central Shikoku, Japan: a Cretaceous accretionary prism. Tectonophysics, 185: 111-139. Chen Wen, Zhang Sihong and Shao Jianguo, 1997. Laser microprobe 39Ar-40Ar ages of individual mineral grains in the east Kunlun mylonite and Yunkai orthogneiss. Acta Geoscientia Sinica, 18 (Supp): 102-105 (in Chinese with English abstract). Sebai, A., Feraud, G., and Hanes, J., 1991. 40Ar/39Ar dating and geochemistry of tholeiitic magmatism related to the early opening of the Central Atlantic rift. Earth and Planetary Letters, 104: 455-472. Xu Zhiqin and Cui Junwen, 1996. Metamorphic Tectonic Dynamics of Continental Orogenic Links. Beijing: Metallurgy and Techniques Press, 246 (in Chinese with English abstract). Zhang Yuquan and Xie Yingwen, 1997. Geochronology and characteristics of Nd, Sr isotope from alkaline intrusion in Ailaoshan-Jinshajiang. 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Acta Geoscientia Sinica, 17: 424-438 (in Chinese with English abstract). 1987; 14 1996; 17 1984; 25 2000; 7 1998 1999; 45 1996 1995 1991; 80 1997; 27 1993 1999; 166 1992 1990; 185 1990; 184 1996; 127 1993; 12 1984; 3 1995; 23 1987 1997; 18 1994; 15 1999; 73 1980 1991; 104 2001; 75 1988 |
| References_xml | – reference: Luo Yaonan, Yu Rulong, Hou Liwei et al, 1998. Intracontinental Orogens in Longmenshan-Jinpingshan. Chengdu: Sichuan Science and Technology Press, 171 (in Chinese). – reference: Liu Zengqian, Li Xingzhen, Ye Qingtong et al., 1993. Division of Tectonic-Magmatic Belt and Distribution of Mineral Deposits. Beijing: Geological Publishing House, 246 (in Chinese with English abstract). – reference: Ge Ningjie, Sun Weidong and Wang Zhaorong, 1997. Tri-stage uplift model for the ultrahigh-pressure rocks from Dabie mountains-evidence of geochronology. Acta Geoscientia Sinica, 18(Supp): 71-73 (in Chinese with English abstract). – reference: Lu Jiren, 1996, Dynamical characteristics of the Emei mantle plume. Acta Geoscientia Sinica, 17: 424-438 (in Chinese with English abstract). – reference: Ozdemir, O., and Yprk, D., 1990. 40Ar/39Ar laser dating of a single grain of magnetite. Tectonophysics, 184: 21-33. – reference: Qiu, H.-N, 1996. 40Ar-39Ar dating of the quartz samples from two mineral deposits in western Yunnan (SW China) by crushing in vacuum. Chem. Geol. (Isot. Geosci. Section), 127: 211-222. – reference: Hou Zengqian, Lu Jiren, Wang Yunliang, et al., 1999. Emei Large Igneous Province: characteristics and origin. Geological Review, 45: 885-891 (in Chinese with English abstract). – reference: Chen Wen, Zhang Sihong and Shao Jianguo, 1997. Laser microprobe 39Ar-40Ar ages of individual mineral grains in the east Kunlun mylonite and Yunkai orthogneiss. Acta Geoscientia Sinica, 18 (Supp): 102-105 (in Chinese with English abstract). – reference: Xiong Shunhua and Li Jianlin, 1984. Characteristics of the late Permian basalts in the edges of continental rift in the Emei Mountain. Journal of Chengdu Collage of Geology. 3: 43-59 (in Chinese with English abstract). – reference: Hou Zengqian, Qu Xiaoming, Yang Yueqing et al., 2001. Orogenesis of Yidun Island-Arc collisional orogenic belt in Sanjiang Region, S.W. China: Records of granite. Acta Geologica Sinica, 75: 484-497 (in Chinese with English abstract). – reference: England, P.C., and Thompson, E., 1984. P-T paths of regional metamorphism I: heat transfer during the evolution of regions of thickened continental crust. Jour. Petrol., 25: 894-928. – reference: Zhang Zongqing, Lu Jiren and Tang Suohan, 1999. Sm-Nd ages of the Panxi layered basic-ultrabasic intrusion in Sichuan. Acta Geologica Sinica, 73: 263-271 (in Chinese with English abstract). – reference: Shen Weizhou, Xu Shijin, Wang Rucheng et al., 1997. Preliminary chronological study of meta-basalts in Danba area and its geologic significance. Acta Geoscientia Sinica, 18 (Supp): 62-64 (in Chinese with English abstract). – reference: Chen Zhiliang, Chen Shiyu, Zhou Mingkui et al., 1987. Geological Tectonic Evolution in the Western Margin of the Yangtze Massif. Chongqing: Chongqing Press, 170 (in Chinese). – reference: Zhang Yunxiang, Luo Yaonan and Yang Chongxi 1988. The Panxi Rift. Beijing: Geological Publishing House, 250 (in Chinese with English abstract). – reference: Chen Wen, 1994. Research on laser microprobe 40Ar/39Ar Dating. Acta Geoscientia Sinica, 15: 197-205 (in Chinese with English abstract). – reference: Xu Zhiqin, Hou Liwei, Wang Zongxiu et al., 1992. Orogeny of Songpan-Garzê orogenic belt, China. Beijing: Geological Publishing House, 190 (in Chinese with English abstract). – reference: Zhang Yuquan and Xie Yingwen, 1997. Geochronology and characteristics of Nd, Sr isotope from alkaline intrusion in Ailaoshan-Jinshajiang. Science in China (Series D), 27: 289-293 (in Chinese). – reference: Chung Sun-lin and Jahn Bor-ming, 1995. Plume-lithosphere interaction in generation of the Emeishan flood basalts at the Permian-Triasssic boundary. Geology, 23: 889-892. – reference: Courtillot, V., Jaupart, C., Manighetti, I., et al., 1999. On causal links between flood basalts and continental breakup. Earth Planet. Sci. Lett.., 166: 177-195. – reference: Wang Yunliang, Hugbes, S.S., Li Juchu et al., 1987. Geochemistry of basalts and evolution of continental mantle in the Emei Mountain. Journal of Chengdu College of Geology. 14: 59-74 (in Chinese with English abstract). – reference: Chen Wen and Xu Zhiqin, 1996. Using the laser microprobe 40Ar/39Ar dating technique and the 40Ar/39Ar stepwise incremental heating technique to date the ages of Xidatan shear zone (Kunlun Terrane, Tibet Plateau). Acta Geoscientia Sinica (Special issue) 228-232. – reference: Hou Zengqian, Hou Liwei, Ye Qingtong, et al., 1995. Tectonic-Magmatic Evolution of Yidun Island-Arc and Volcanogenic Massive Sulfide Deposits in Sanjiang Region, S.W. China. Beijing: Seismological Press, 218 (in Chinese with English abstract). – reference: Xu Zhiqin and Cui Junwen, 1996. Metamorphic Tectonic Dynamics of Continental Orogenic Links. Beijing: Metallurgy and Techniques Press, 246 (in Chinese with English abstract). – reference: Wirth, K.R., Bird, J.M., and Harding, D.J., 1993. Age and evolution of Western Brooks Range ophiolites, Alaska: results from 40Ar/39Ar thermochronometry. Tectonics, 12(2): 410-432. – reference: Zhong Dalai, Zhang Jinjiang and Ji Jianqing, 2000. Multi-periodic collisional processes between Indian and Asian continents: a case of eastern Himalayan syntaxis and Hengduan Mountains. Abstracts of the 15th Workshop of the Himalayas, Karkoram and Tibet (HKT). Earth Science Frontiers, 7(supp.): 47-48. – reference: Jamieson, R.A., 1991. P-T-t paths of collisional orogens. Geologiche Rundschau, 80: 321-332. – reference: Cong Bailin, 1988. Formation and evolution of the Panxi Rift. Beijing: Science Press, 180 (in Chinese with English abstract). – reference: Ren Jishun (Editor in Chief), 1980. Geotectonic Evolution of China. Beijing: Science Press, 124 (in Chinese). – reference: Sebai, A., Feraud, G., and Hanes, J., 1991. 40Ar/39Ar dating and geochemistry of tholeiitic magmatism related to the early opening of the Central Atlantic rift. Earth and Planetary Letters, 104: 455-472. – reference: Takasu, A. and Dallmeyer, R. D., 1990. 40Ar/39Ar mineral age constraints for the tectonothermal evolution of the Sambagawa metamorphic belt, central Shikoku, Japan: a Cretaceous accretionary prism. Tectonophysics, 185: 111-139. – volume: 73 start-page: 263 year: 1999 end-page: 271 article-title: Sm‐Nd ages of the Panxi layered basic‐ultrabasic intrusion in Sichuan publication-title: Acta Geologica Sinica – volume: 25 start-page: 894 year: 1984 end-page: 928 article-title: P‐T paths of regional metamorphism I: heat transfer during the evolution of regions of thickened continental crust publication-title: Jour. Petrol – start-page: 228 year: 1996 end-page: 232 article-title: Using the laser microprobe Ar/ Ar dating technique and the Ar/ Ar stepwise incremental heating technique to date the ages of Xidatan shear zone (Kunlun Terrane, Tibet Plateau) publication-title: Acta Geoscientia Sinica – start-page: 171 year: 1998 – start-page: 246 year: 1993 – volume: 184 start-page: 21 year: 1990 end-page: 33 article-title: Ar/ Ar laser dating of a single grain of magnetite publication-title: Tectonophysics – volume: 166 start-page: 177 year: 1999 end-page: 195 article-title: On causal links between flood basalts and continental breakup publication-title: Earth Planet. Sci. Lett. – volume: 45 start-page: 885 year: 1999 end-page: 891 article-title: Emei Large Igneous Province: characteristics and origin publication-title: Geological Review – volume: 7 start-page: 47 issue: supp. year: 2000 end-page: 48 article-title: Multi‐periodic collisional processes between Indian and Asian continents: a case of eastern Himalayan syntaxis and Hengduan Mountains. Abstracts of the 15th Workshop of the Himalayas, Karkoram and Tibet (HKT) publication-title: Earth Science Frontiers – start-page: 250 year: 1988 – volume: 18 start-page: 62 issue: Supp year: 1997 end-page: 64 article-title: Preliminary chronological study of meta‐basalts in Danba area and its geologic significance publication-title: Acta Geoscientia Sinica – volume: 104 start-page: 455 year: 1991 end-page: 472 article-title: Ar/ Ar dating and geochemistry of tholeiitic magmatism related to the early opening of the Central Atlantic rift publication-title: Earth and Planetary Letters – volume: 75 start-page: 484 year: 2001 end-page: 497 article-title: Orogenesis of Yidun Island‐Arc collisional orogenic belt in Sanjiang Region, S.W. China: Records of granite publication-title: Acta Geologica Sinica – volume: 14 start-page: 59 year: 1987 end-page: 74 article-title: Geochemistry of basalts and evolution of continental mantle in the Emei Mountain publication-title: Journal of Chengdu College of Geology – volume: 27 start-page: 289 year: 1997 end-page: 293 article-title: Geochronology and characteristics of Nd, Sr isotope from alkaline intrusion in Ailaoshan‐Jinshajiang publication-title: Science in China (Series D) – volume: 17 start-page: 424 year: 1996 end-page: 438 article-title: Dynamical characteristics of the Emei mantle plume publication-title: Acta Geoscientia Sinica – volume: 23 start-page: 889 year: 1995 end-page: 892 article-title: Plume‐lithosphere interaction in generation of the Emeishan flood basalts at the Permian‐Triasssic boundary publication-title: Geology – start-page: 218 year: 1995 – volume: 80 start-page: 321 year: 1991 end-page: 332 article-title: P‐T‐t paths of collisional orogens publication-title: Geologiche Rundschau – volume: 18 start-page: 71 issue: Supp year: 1997 end-page: 73 article-title: Tri‐stage uplift model for the ultrahigh‐pressure rocks from Dabie mountains‐evidence of geochronology publication-title: Acta Geoscientia Sinica – volume: 15 start-page: 197 year: 1994 end-page: 205 article-title: Research on laser microprobe Ar/ Ar Dating publication-title: Acta Geoscientia Sinica – start-page: 180 year: 1988 – volume: 18 start-page: 102 issue: Supp year: 1997 end-page: 105 article-title: Laser microprobe Ar‐ Ar ages of individual mineral grains in the east Kunlun mylonite and Yunkai orthogneiss publication-title: Acta Geoscientia Sinica – start-page: 170 year: 1987 – start-page: 190 year: 1992 – start-page: 246 year: 1996 – start-page: 124 year: 1980 – volume: 12 start-page: 410 issue: 2 year: 1993 end-page: 432 article-title: Age and evolution of Western Brooks Range ophiolites, Alaska: results from Ar/ Ar thermochronometry publication-title: Tectonics – volume: 185 start-page: 111 year: 1990 end-page: 139 article-title: Ar/ Ar mineral age constraints for the tectonothermal evolution of the Sambagawa metamorphic belt, central Shikoku, Japan: a Cretaceous accretionary prism publication-title: Tectonophysics – volume: 3 start-page: 43 year: 1984 end-page: 59 article-title: Characteristics of the late Permian basalts in the edges of continental rift in the Emei Mountain publication-title: Journal of Chengdu Collage of Geology – volume: 127 start-page: 211 year: 1996 end-page: 222 article-title: Ar‐ Ar dating of the quartz samples from two mineral deposits in western Yunnan (SW China) by crushing in vacuum publication-title: Chem. Geol. (Isot. Geosci. Section) |
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| Snippet | Geochronology of continental flood basalts sampled from the Emei large igneous province (LIP) on the western margin of the Yangtze platform was investigated by... |
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| SubjectTerms | 40Ar/39Ar 40Ar/39Ar age age basalts basalts in the Emei LIP collisional collisional orogeny Emei LIP orogeny plateau Qinghai-Tibet Qinghai-Tibet plateau the |
| Title | Collision Event during 177-135 Ma on the Eastern Margin of the Qinghai-Tibet Plateau: Evidence from 40Ar/ 39Ar Dating for Basalts on the Western Margin of the Yangtze Platform |
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| Volume | 76 |
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