Abstract
The40Ar/39Ar ages indicate that the eclogite facies rocks of the Hasiate slice in the western Tianshan Mountains were formed at the early stage of Devonian (401 Ma) and had been uplifted to the greenschist facies tectonic level in the middle stage of Devonian (381 Ma). The formation and uplift of the blueschists of the Akesayi slice are constrained to the late stage of Devonian (370-364 Ma). The different tectonic slices in the high-pressure metamorphic belt have experienced the different uplift history.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Nussbaum, C., Marquer, D., Biino, G. G., Two subduction events in a polycyclic basement: Alpine and pre-Alpine high-pressure metamorphism in the Suretta nappe, Swiss Eastern Alps, Journal of Metamorphic Geology, 1998, 16: 591.
Schreyer, W., Stockhert, B., High-pressure metamorphism in nature and experiment, Lithos., 1997, 41: 1.
Li, S., Wang, S., Chen, Y. et al., Excess argon in phengite from eclogite: evidence from dating of eclogite minerals by Sm-Nd, Rb-Sr and40Ar/39Ar methods, Chemical Geology, 1994, 112: 343.
Rubatto, D., Gebauer, D., Fanning, M., Jurassic formation and Eocene subduction of the Zermatt-Saas-Fee ophiolites: implications for the geodynamic evolution of the Central and Western Alps, Contribution to Mineralogy and Petrology, 1998, 132: 269.
Ruffet, G., Gruau, G., Ballevre, M., et al Rb-Sr and40Ar/39Ar laser probe dating of high-pressure phengites from the Sesia zone (Western Alps): underscoring of excess argon and new age constraints on the high-pressure metamorphism, chemical Geology, 1997, 141: 1.
Carswell, D. A., Eclogites and eclogite facies rocks, Glasgow and London: Blackie, 1990, 53–179.
Gao, J., Klemd, R., Zhang, L., P-T path of high pressure-low temperature rocks and tectonic implications in the western Tianshan Mountains (NW China), Journal of Metamorphic Geology, 1999, 17: 621.
Gao, J., The discovery of eclogites and its tectonic implication, South West Tianshan, Chinese Science Bulletin (in Chinese), 1997, 42(7): 737.
Gao, J., Zhang, L., Formation environment of the high-pressure metamorphic rocks, western Tianshan, Xinjiang, China, Continental Dynamics, 1997, 2: 12.
Gao, J., He, G., Li, M. et al., The mineralogy, petrology, metamorphic PTDt trajectory and exhumation mechanism of blueschists, south Tianshan, northwestern China, Tectonophysics, 1995, 250: 151.
Dott, R. H., Prothero, D. R., Evolution of the Earth (5th ed.), New York: McGraw-Hill, Inc., 1994, 93–107.
Gao, J., Li, M., He, G. et al., Paleozoic tectonic evolution of the Tianshan Orogen, northwestern China, Tectonophysics, 1998, 287: 213.
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Gao, J., Zhang, L. & Liu, S. The40Ar/39Ar age record of formation and uplift of the blueschists and eclogites in the western Tianshan Mountains. Chin. Sci. Bull. 45, 1047–1052 (2000). https://doi.org/10.1007/BF02884989
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02884989