Abstract
Some geologists reported their discovery of sandwiched low-grade metamorphic slabs within UHP metamorphic Complexes in Changpu, Yuexi County, Anhui Province. They also suggested that some coesite-bearing eclogites are igneous veins, which intruded low-grade metamorphic slabs and other related rocks. Moreover they further called in question to UHP metamorphic process and continental collision tectonism in the Dabieshan terrane. Based on our recent study, so-called low-grade metamorphic slabs are strongly deformed fabric, fine-grained and tectonic recrystallized mylonites and tectonites. Their protolith rocks are garnet-bearing orthogneiss, eclogite and marble, as well as a few amounts of strongly deformed acid and basic veins. Their metamorphic, geochemical and geochronological characteristics are also identical with UHPM rocks and regional country orthogneisses. Therefore we conclude that there are not low-grade metamorphic slabs sand wiched with UHP metamorphic rocks in the Dabieshan terrane.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Okay, A. Z., Xu, S., Sengor, A.M.C., Coesite from the Dabieshan eclogites, central China, Eur. Jour. Mineral., 1989, 1: 595.
Wang, X., Liou, Z.G., Reginal ultrahigh-pressure coesite-bearing eclogite terrane in central China: Evidence from country rocks, gneiss, marble, and metapelite, Geology, 1991, 19: 933.
Carswell, D. A., Cong, B., Wilson, R.H. et al., Two constrasting eclogite terranes in Dabieshan, China, Abstract in “First Workshop on UHP Metamorphism and Tectonics”, Stanford: Stanford University, 1994, A-85.
Cong, B., Zhai, M., Carswell, D. A. et al., Petrogenesis of ultrahigh-pressure rocks and their country rocks in Shuanghe of Dabieshan, central China, Eur. J. Mineral., 1995, 7: 119.
Zhai, M., Cong, B., Zhao, Z. et al., Petrol-tectonic units in the coesite-bearing metamorphic terrain of the Dabie Mountains, Central China and their geotectonic implications, J. SE Asian Earth Sci., 1995, 11:1.
You, Z., Suo, S., Zhong, Z. et al., On retrometamorphism of the Dabieshan ultrahigh-pressure metamorphic rocks and their relation to tectonic evolution, J. China University of Geoscience, 1997, 8(2): 95.
Tang Jiafu, Qian Cunzhao, Gao Tianshan. Discovery of low-grade metamorphic volcanic-clastic rocks in the Dabieshan eclogite zone and its geological significance, Anhui Geology (in Chinese), 1995. 5(2): 29.
Qian Cunzhao, Characteristics of low-grade metamorphic rocks in Dabieshan eclogite zone and its tectonic background, Anhui Geology (in Chinese), 1996, 6(2): 15.
Dong Shuwen, Wang Xiaofeng, Huang Dezhi, Discovery of low-grade metamorphic slab in Dabieshan UHP terrane and its geological implication, Chinese Science Bulletin (in Chinese), 1996, 41(9): 815.
Gao Tianshan, Tang Jiafu, Zhou Cunting et al., The discovery of eclogite dikes in low-greenschist facies volcaniclasstic rocks of the Dabie Mountains, Chinese Science Bulletin, 1997, 42(20): 1726.
Liu Deliang, Li Shuguang, Zhu Jun et al., Discovery of supennylonite vein and its geological significance, Scientia Geologica Sinica (in Chinese), 1990, 2: 183.
Ames, L., Tilton, G., Zhou, G., Timing of collision of the Sino-Korea and Yangtze craton: U-Pb zircon dating of coesite-bearing eclogites, Geology, 1993, 21: 339.
Rowley, D.B., Xue, F., Tucker, R.D. et al., Ages of ultrahigh pressure metamorphism and protolith orthogneisses from the eastern Dabieshan: U/Pb zircon geochronology, Earthy Planet. Sci. Lett., 1997, 151: 191.
Chen Jiangfeng, Dong Shuwen, Deng Yanyao et al., Interpretation of K-Ar ages in Dabieshan orogenic zone: different uplifting of terrain, Chinese Geological Review (in Chinese). 1993, 99(1): 17.
Li Shuguang, Li Huimin, Chen Yizhi et al., UHP metamorphic geochronology of Dabieshan-Sulu terrane-II: Zircon U-Pb isotopic system, Science in China (in Chinese), Ser. B, 1997, 27(3): 200.
Wang Qingchen, Cong Bolin, Geodynamics of UHP rocks in Dabieshan, Science in China, Ser. B, (in Chinese), 1996, 26(3): 271.
Author information
Authors and Affiliations
About this article
Cite this article
Zhai, M., Jiang, L., Wang, Q. et al. Call in question and discussion: Are there sandwiched low-grade metamorphic slabs within UHP metamorphic rocks in the Dabieshan terrane?. Chin. Sci. Bull. 45, 181–189 (2000). https://doi.org/10.1007/BF02884669
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02884669