Journal of Northeastern University(Natural Science) ›› 2021, Vol. 42 ›› Issue (4): 550-560.DOI: 10.12068/j.issn.1005-3026.2021.04.014

• Resources & Civil Engineering • Previous Articles     Next Articles

Genesis of Dolostone in Du’an Formation of Youjiang Basin and Its Geological Significance

ZHANG Yong-li, MIAO Zhuo-wei, GONG En-pu, ZHANG Qian   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Revised:2020-08-31 Accepted:2020-08-31 Published:2021-04-15
  • Contact: GONG En-pu
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Abstract: Taking the Dujie section as an example, the sedimentary environment analysis and petrological analysis were carried out to further improve the research level on the dolomites of the Lower Carboniferous Du’an Formation in the Youjiang Basin. The dolostone was formed in the Sabkha model of the syngenetic and peneogenetic stages, and was transformed by burial dolomitization in the epigenetic stage. The dolostone stratum of the Du’an Formation, the bonded limestone stratum in the intertidal zone and the grainstone-packstone stratum in the shallow subtidal zone constitute the tidal-flat carbonate rock meter-scale sequence, which provids sedimentological evidence for the development of the Late Paleozoic glaciation in the Serpukhovian.

Key words: Youjiang Basin; Du’an Formation; dolostone; Sabkha model; Late Paleozoic glaciation

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