东北大学学报(自然科学版) ›› 2021, Vol. 42 ›› Issue (4): 550-560.DOI: 10.12068/j.issn.1005-3026.2021.04.014

• 资源与土木工程 • 上一篇    下一篇

右江盆地都安组白云岩成因及其地质意义

张永利, 苗卓伟, 巩恩普, 张倩   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 修回日期:2020-08-31 接受日期:2020-08-31 发布日期:2021-04-15
  • 通讯作者: 张永利
  • 作者简介:张永利(1980-),男,河北保定人,东北大学副教授; 巩恩普(1958-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    黔桂地区石炭纪生物礁造礁群落更替对晚古生代冰期响应机制研究(41972002).

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
  • About author:-
  • Supported by:
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摘要: 以都结剖面为例,逐步开展沉积环境分析和岩石学分析方面的工作,旨在进一步提高右江盆地下石炭统都安组白云岩的研究程度.该白云岩形成于同生、准同生阶段的萨布哈模式,并在后生埋藏阶段受到埋藏白云石化作用的改造.都安组白云岩地层、下伏潮间带黏结灰岩地层及浅水潮下带颗粒-泥粒灰岩地层共同构成环潮坪型碳酸盐岩米级旋回,为晚古生代冰川作用在谢尔普霍夫期的发育提供了沉积学证据.

关键词: 右江盆地;都安组;白云岩;萨布哈模式;晚古生代冰期

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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