西南石油大学学报(自然科学版) ›› 1994, Vol. 16 ›› Issue (3): 1-6.DOI: 10.3863/j.issn.1000-2634.1994.03.001

• 石油地质勘探 •     Next Articles

Classif ication，Genesis and Significance of Nodular Limestone of Early Silurian in NW Sichuan

Lan Guang-zhi1 Zhang Ting-shan2 Gao Wei-dong3

  

  1. (Department of Scientific Research)(Department of Petroleum Exploration)(Office of SW Petroleum Institute)
  • Received:1993-12-31 Revised:1900-01-01 Online:1994-08-20 Published:1994-08-20
  • Contact: Lan Guang-zhi

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Abstract: According to the distribution，components and characteristics of the nodular limPStone of early Silurian in NW Sichuan，the authors have divided it into three patterns A,B,C. The nodular limestone of patterns A and B，the formation of which has much to do with the ac-tion of blue一green algae，deposited on shallow ramp ith reefs and bioherms while the nodu-lar limestone of pattern C deposited of deep ramp，the formation of which has close relation with the effect of pressure一dissolution. The nodular limestone of these three patterns in this area has oil一gas bearing quality to
a certain degree.

Key words: Carbonate rock Nodular limestone Classificatio

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