Sedimentary Characteristics of Dolomite from Gaoyuzhuang Formation in Beipiao Area, North China

被引：0
|
作者：
Ding W. [1 ]
Ning M. [1 ]
Qin S. [1 ]
Dong L. [1 ]
机构：
[1] Key Laboratory of Orogenic Belts and Crustal Evolution (MOE), School of Earth and Space Sciences, Peking University, Beijing
来源：
Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis | 2019年 / 55卷 / 06期
关键词：
Beipiao area; Dolomite; Gaoyuzhuang Formation; Porosity; Reservoir; Silica filling; Silica replacement;
D O I：
10.13209/j.0479-8023.2019.081
中图分类号：
学科分类号：
摘要：
The Neoproterozoic Gaoyuzhuang dolomite from Beipiao area, western Liaoning Province was syste-matically studied based on outcrop and microscope observations. The whole section is composed of several cyclic shallowing upward units (subsequences), which include subtidal massive dolomite and intertidal thin-bedded dolomite. Three types of microfacies, microspar dolomite, dolomicrite and intraclast dolomite, were identified. Partial recrystallization and silica filling/replacement are associated with each microfacies. The chert bands and nodules, which are commonly distributed along the stratigraphic layers, was probably formed during the syn-depositional stage. Silica filling/replacement may have great contributions to dolomite dissolution and recry- stallization and therefore improve the porosity of the dolomite, potentially leading to the formation of the excellent dolomite reservoir. Therefore, silica filling/replacement during the syn-depositional stage is significant for the development and evolution of dolomite reservoirs. © 2019 Peking University.
引用
收藏
页码：1055 / 1066
页数：11
相关论文
共 40 条
  • [1] Azomani E., Azmy K., Blamey N., Et al., Origin of Lower Ordovician dolomites in eastern Laurentia: controls on porosity and implications from geoche-mistry, Marine & Petroleum Geology, 40, 1, pp. 99-114, (2013)
  • [2] Sun S.Q., Dolomite reservoirs: porosity evolution and reservoir characteristics, AAPG Bulletin, 79, 2, pp. 186-204, (1995)
  • [3] Warren J., Dolomite: occurrence, evolution and econo-mically important associations, Earth Science Reviews, 52, 1, pp. 1-81, (2000)
  • [4] Bjorlykke K., Relationships between depositional en-vironments, burial history and rock properties: some principal aspects of diagenetic process in sedimen-tary basins, Sedimentary Geology, 301, 3, pp. 1-14, (2014)
  • [5] Lucia F.J., Rock-fabric/petrophysical classification of carbonate pore space for reservoir characterization, AAPG Bulletin, 79, 9, pp. 1275-1300, (1995)
  • [6] Guo H., Du Y., Kah L.C., Et al., Sulfur isotope composition of carbonate-associated sulfate from the Mesoproterozoic Jixian Group, North China: implications for the marine sulfur cycle, Precambrian Research, 266, pp. 319-336, (2015)
  • [7] Mei M., Preliminary study on sequence-stratigraphic position and origin for Molar-tooth structure of the Gaoyuzhuang Formation of Mesopro-terozoic at Jixian section in Tianjin, Journal of Palaeogeography, 7, 4, pp. 437-447, (2005)
  • [8] Brasier M.D., Lindsay J.F., A billion years of envi-ronmental stability and the emergence of eukaryotes: new data from northern Australia, Geology, 26, 6, pp. 555-558, (1998)
  • [9] Buick R., Des Marais D.J., Knoll A.H., Stable isotopic compositions of carbonates from the Mesoproterozoic Bangemall Group, northwestern Australia, Chemical Geology, 123, pp. 153-171, (1995)
  • [10] Planavsky N.J., Reinhard C.T., Wang X.L., Et al., Low mid-Proterozoic atmospheric oxygen levels and the delayed rise of animals, Science, 346, pp. 635-638, (2014)
1234