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Геодинамика и тектонофизика

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EVOLUTION OF THE NORTHERN ALXA BLOCK IN THE PALEOZOIC: CONSTRAINTS FROM GEOCHRONOLOGY, GEOCHEMICAL CHARACTERISTICS AND ZIRCON HF ISOTOPES OF GRANITOIDS

https://doi.org/10.5800/GT-2017-8-3-0307

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Аннотация

The Alxa block is situated to the south of the CAOB, situated to the east of the Tarim block and west of the NCC. Voluminous intrusive and extrusive rocks outcrop in the northern Alxa block and adjacent southern CAOB. Most of them are thought to be related to the closure of the Paleo-Asia Ocean and subsequent collision [Wu, 1993; Wu et al., 1998; Zhang et al., 2013; Dan et al., 2016].

Об авторах

Lei Zhang
Institute of Geology, Chinese Academy of Geological Sciences
Китай
Beijing 100037


Tao Wang
Institute of Geology, Chinese Academy of Geological Sciences
Китай
Beijing 100037


Jian-jun Zhang
Institute of Geology, Chinese Academy of Geological Sciences
Китай
Beijing 100037


Xing-jun Shi
Xinyang Normal University
Китай

Faculty of City and Environmental Science, 

Xinyang 464000



Ying Tong
Institute of Geology, Chinese Academy of Geological Sciences
Китай
Beijing 100037


Список литературы

1. Dan W., Li X.H., Wang Q., Wang X.C., Wyman D.A., Liu Y., 2016. Phanerozoic amalgamation of the Alxa block and North China craton: Evidence from Paleozoic granitoids, U-Pb geochronology and Sr-Nd-Pb-Hf-O isotope geochemistry. Gondwana Research 32, 105–121. https://doi.org/10.1016/j.gr.2015.02.011.

2. Li J.J., 2006. Regional metallogenic system of Alashan Block in the Inner Mongolia Autonomous region. A Dissertation Submitted to China University of Geoscience for Doctoral Degree (in Chinese with English Abstract).

3. Shi X.J., Wang T., Zhang L., Castro A., Xiao X.C., Tong Y., Zhang J.J., Guo L., Yang Q.D., 2014a. Timing, petrogenesis and tectonic setting of the Late Paleozoic gabbro–granodiorite–granite intrusions in the Shalazhashan of northern Alxa: Constraints on the southernmost boundary of the Central Asian Orogenic Belt. Lithos 208–209, 158–177. https://doi.org/10.1016/j.lithos.2014.08.024.

4. Shi X.J., Zhang L., Wang T., Xiao X.C., Tong Y., Zhang J.J., Geng J.Z., Ye K., 2014b. Geochronology and geochemistry of the intermediate-acid intrusive rocks from Zongnaishan area in northern Alxa, Inner Mongolia, and their tectonic implications. Acta Petrologica et Mineralogica 33 (6), 989–1007 (in Chinese with English abstract).

5. Wang T.Y., Wang J.R., Wang S.Z., 1992. The identification of the Engerwusu mélange in northern Alxa area and its tectonic implications. Journal of Lanzhou University (Natural Sciences) 28 (2), 194–196 (in Chinese).

6. Wang T.Y., Wang S.Z., Wang J.R., 1994. Formation and Evolution of the Paleozoic Continental Crust in the Alxa Area. Lanzhou University Press, Lanzhou, 213 p. (in Chinese).

7. Wu T.R., 1993. Tectonic units and their fundamental characteristics on the northern margin of the Alxa block. Acta Geologica Sinica 67, 97–108 (in Chinese with English abstract).

8. Wu T.R., He G.Q., Zhang C., 1998. On Paleozoic tectonics in the Alxa region. Acta Geologica Sinica 72 (3), 256–263.

9. Zhang J.J., Wang T., Zhang L., Tong Y., Shi X.J., Guo. L., Zhang Z.C., Yang Q.D., Huang W., Zhao J.X., Ye K., 2015. Tracking deep crust by zircon xenocrysts within igneous rocks from the northern Alxa region, China: Constraint on the southernmost boundary of the Central Asian Orogenic Belt. Journal of Asian Earth Sciences 108, 150–169. https://doi.org/10.1016/j.jseaes.2015.04.019.

10. Zhang W., Wu T.R., Feng J.C., Zheng R.G., He Y.K., 2013. Time constraints for the closing of the Paleo-Asian ocean in the Northern Alxa region: evidence from Wuliji granites. Science China Earth Sciences 56 (1), 153–164. https:// doi.org/10.1007/s11430-012-4435-y.

11. Zheng R.G., Wu T.R., Zhang W., Xu C., Meng Q.P., Zhang Z.Y., 2014. Late Paleozoic subduction system in the northern margin of the Alxa block, Altaids: Geochronological and geochemical evidences from ophiolites. Gondwana Research 25 (2), 842–858. https://doi.org/10.1016/j.gr.2013.05.011


Для цитирования:


Zhang L., Wang T., Zhang J., Shi X., Tong Y. EVOLUTION OF THE NORTHERN ALXA BLOCK IN THE PALEOZOIC: CONSTRAINTS FROM GEOCHRONOLOGY, GEOCHEMICAL CHARACTERISTICS AND ZIRCON HF ISOTOPES OF GRANITOIDS. Геодинамика и тектонофизика. 2017;8(3):613-614. https://doi.org/10.5800/GT-2017-8-3-0307

For citation:


Zhang L., Wang T., Zhang J., Shi X., Ying T. EVOLUTION OF THE NORTHERN ALXA BLOCK IN THE PALEOZOIC: CONSTRAINTS FROM GEOCHRONOLOGY, GEOCHEMICAL CHARACTERISTICS AND ZIRCON HF ISOTOPES OF GRANITOIDS. Geodynamics & Tectonophysics. 2017;8(3):613-614. https://doi.org/10.5800/GT-2017-8-3-0307

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