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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2011  >  33(1): 56-60
Wang Furong, He Sheng, Yang Xingye. Diagenetic environments of calcite veins hosted in marine carbonate rocks in middle Yangtze region of South China[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2011, 33(1): 56-60. doi: 10.11781/sysydz201101056
Citation: Wang Furong, He Sheng, Yang Xingye. Diagenetic environments of calcite veins hosted in marine carbonate rocks in middle Yangtze region of South China[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2011, 33(1): 56-60. doi: 10.11781/sysydz201101056
shu

Diagenetic environments of calcite veins hosted in marine carbonate rocks in middle Yangtze region of South China

doi: 10.11781/sysydz201101056
  • 1.

    Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China

  • 2. Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China

  • Received Date: 2010-09-07
  • Rev Recd Date: 2010-12-24
  • Publish Date: 2011-02-28
    Abstract
  • Analyses of thin slices,cathodoluminescence and carbon—oxygen isotope of calcite veins hosted in marine carbonate rocks distributed around Jingshan County in the middle Yangtze region of South China indicated that,two crystal forms including radial calcite and isometric texture calcite could be identified in calcite veins in the Triassic and the cathodoluminescence intensity was different.The Permian and Ordovician fractures were mainly filled with isometric texture calcite veins and the cathodoluminescence intensity was similar with that of the surrounding rocks.The δ13CPDB value of calcite veins ranged from -6.76‰ to 4.01‰ and the δ18OPDB value ranged from -17.95‰ to -5.67‰,indicating the marine phreatic environment and the mixing phreatic environment for calcite veins deposition.Calcite veins in the Triassic were sedimentary origin,and part of calcite veins in the Permian and the Ordovician suffered latter diagenetic fluid dissolution.Fluid generated from organic-matter maturation effected the formation of calcite veins in the Permian to some degree.

     

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