The black shale of the Lower Cambrian Niutitang Formation in Guizhou province is a set of good source rock. Based on the summary of previous research results and the analysis of sedimentary paleoenvironment characteristics of the black shale, its lithofacies are classified, and then the distribution of lithofacies is analyzed. Moreover, the coupling relationship among the distributions of lithofacies, sedimentary environment, and organic matter content are compared. The results show that: (1) the black shale of Niutitang Formation is mainly composed of siliceous and argillaceous shales; (2) vertically, the redox environment of shale deposition changes from anoxic condition to oxic condition from bottom to top, and siliceous shale is mainly developed in anoxic environment of deep water phase, while clay-rich siliceous shale is mainly developed in suboxic environment; (3) laterally, the anoxic environment of carbonate platform facies in Well JY1 mainly develops argillaceous/siliceous mixed shale, while the suboxic environment of slope to basin facies in Well TX1 mainly develops silica-rich argillaceous and siliceous shales; (4) both of basins and carbonate platforms facies are enriched in organic matter, which is mainly enriched in siliceous shale.
NING Shitan, XIA Peng, HAO Fang, TIAN Jinqiang, ZHONG Yi, ZOU Niuniu, FU Yong. Shale facies and its relationship with sedimentary environment and organic matter of Niutitang black shale, Guizhou Province. Natural Gas Geoscience[J], 2021, 32(9): 1297-1307 doi:10.11764/j.issn.1672-1926.2021.02.013
YE J, FAN D L. Formation of black rock series type deposits and their occurrence characteristics in China[J]. Bulletin of Mi-neralogy, Petrology and Geochemistry, 2000,19(2): 95-102.
SHI C, CAO J, HAN S, et al. A review of polymetallic mineralization in Lower Cambrian black shales in South China: Combined effects of seawater, hydrothermal fluids, and biological activity[J]. Palaeogeography,Palaeoclimatology,Palaeoecology, 2021,561:110073.
ZHU M Y. Origin of animals and Cambrian explosion: Fossil evidence from China[J]. Acta Palaeontologica Sinica, 2010,49 (3): 269-287.
YEASMIN R, CHEN D, FU Y, et al. Climatic-oceanic forcing on the organic accumulation across the shelf during the Early Cambrian (Age 2 through 3) in the mid-upper Yangtze Block, NE Guizhou, South China[J]. Journal of Asian Earth Sciences, 2017,134:365-386.
ZOU C N, DONG D Z, WANG S J, et al. Formation mechanism, geological characteristics and resource potential of shale gas in China[J].Petroleum Exploration and Development, 2010,37(6): 641-653.
ZHU L J, ZHANG D W, ZHANG J C, et al. Geological Theory and Practice of Paleozoic Passive Continental Margin Shale Gas in Eastern Upper Yangtze[M]. Beijing: Science Press,2019:1-320.
ZHANG J, FAN T, LI J, et al. Characterization of the Lower Cambrian shale in the northwestern Guizhou Province, South China: Implications for shale-gas potential[J]. Energy & Fuels, 2015,29(10):6383-6393.
HAN S, BAI S, TANG Z, et al. Nitrogen-rich gas shale logging evaluation and differential gas-bearing characterization of Lower Cambrian Formation in northern Guizhou, South China[J]. Marine and Petroleum Geology, 2020,115:104270.
DAI C G, ZHENG Q Q, CHEN J S, et al. Study on metallogenic geological background of Xuefeng Caledonian tectonic cycle in Guizhou[J].Earth Science Frontiers,2013,20(6):219-225.
XIA P, WANG G L, ZENG F G, et al. Nitrogen enrichment characteristics and mechanism of high over mature shale gas from Niutitang Formation in northern Guizhou[J]. Natural Gas Geoscience, 2018,29(9):1345-1355.
XIA P, WANG G L, ZHOU H, et al. Characteristics of typical residual concealed Syncline in Fenggang block of Northern Guizhou and its significance for shale gas selection[J]. Journal of Northeast Petroleum University, 2018,42(2): 71-79.
JIN C, LI C, ALGEO T J, et al. Controls on organic matter accumulation on the Early-Cambrian western Yangtze Platform, South China[J]. Marine and Petroleum Geology, 2020,111:75-87.
LI J. Paleoenvironment Restoration and Organic Matter Enrichment of Lower Cambrian Niutitang Formation Shale in Northern Guizhou[D]. Beijing:China University of Geosciences (Beijing), 2018:187.
DONG C M, MA C F, LIN C Y, et al. A lithofacies division method of shale series[J]. Journal of China University of Petroleum: Edition of Natural Science, 2015,39(3): 1-7.
WANG Y M, WANG S F, DONG D Z, et al. Shale facies characterization of Lower Silurian Longmaxi Formation in southern Sichuan[J]. Earth Science Frontiers, 2016,23(1): 119-133.
WU L, LU Y, JIANG S, et al. Pore structure characterization of different lithofacies in marine shale: A case study of the Upper Ordovician Wufeng-Lower Silurian Longmaxi Formation in the Sichuan Basin, SW China[J]. Journal of Natural Gas Science and Engineering, 2018,57:203-215.
XU S, GOU Q, HAO F, et al. Shale pore structure characteristics of the high and low productivity wells, Jiaoshiba shale gas field, Sichuan Basin, China: Dominated by lithofacies or preservation condition?[J]. Marine and Petroleum Geology, 2020,114:104211.
XIA P, LI H, FU Y, et al. Effect of lithofacies on pore structure of the Cambrian organic‐rich shale in northern Guizhou, China[J]. Geological Journal, 2020,56(2):113-142.
LIU Z B, LIU G X, HU Z Q, et al. Lithofacies types and assemblage characteristics of continental shale series and their significance for oil and gas exploration: A case study of Middle and Lower Jurassic in Sichuan Basin[J]. Natural Gas Industry, 2019,39 (12): 10-21.
FENG Z, HAO F, ZHOU S, et al. Pore characteristics and methane adsorption capacity of different lithofacies of the Wufeng Formation-Longmaxi Formation shales, southern Sichuan Basin[J]. Energy Fuels, 2020,34(7):8046-8062.
SHU L S, FAURE M, YU J H, et al. Geochronological and geochemical features of the Cathaysia block(South China): New evidence for the Neoproterozoic breakup of Rodinia[J]. Precambrian Research, 2011,187(3-4):263-276.
CHARVET J. The Neoproterozoic-Early Paleozoic tectonic evolution of the South China Block: An overview[J]. Journal of Asian Earth Sciences, 2013,74:198-209.
GUO Q,SHIELDS G A,LIU C,et al.Trace element chemo-stratigraphy of two Ediacaran-Cambrian successions in South China: Implications for organosedimentary metal enrichment and silicification in the Early Cambrian[J]. Palaeogeography Palaeoclimatology Palaeoecology,2007,254(1-2):194-216.
CHEN D, WANG J, QING H, et al. Hydrothermal venting activities in the Early Cambrian, South China: Petrological, geochronological and stable isotopic constraints[J]. Chemical Geology, 2009,258(3-4):168-181.
YEASMIN R, CHEN D, FU Y, et al. Climatic-oceanic forcing on the organic accumulation across the shelf during the Early Cambrian (Age 2 through 3) in the mid-upper Yangtze Block, NE Guizhou, South China[J]. Journal of Asian Earth Sciences, 2016,134:365-386.
LIU L, TANG S, XI Z. Total organic carbon enrichment and its impact on pore characteristics: A case study from the Niutitang Formation shales in northern Guizhou[J]. Energies (Basel), 2019,12(8):1480.
LI T, TIAN H, XIAO X, et al. Geochemical characterization and methane adsorption capacity of overmature organic-rich Lower Cambrian shales in northeast Guizhou region, southwest China[J]. Marine and Petroleum Geology,2017,86:858-873.
WU C, TUO J, ZHANG L, et al. Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the northern Guizhou area, and insights into shale gas storage mechanisms[J]. International Journal of Coal Geology, 2017,178:13-25.
WU Y, FAN T, JIANG S, et al. Lithofacies and sedimentary sequence of the Lower Cambrian Niutitang shale in the Upper Yangtze platform, South China[J]. Journal of Natural Gas Science and Engineering, 2017,43:124-136.
ZENG W T, DING W L, ZHANG J C, et al. Micro nano pore development characteristics and main controlling factors of Niutitang Formation shale in southeastern Chongqing northern Guizhou area[J]. Earth Science Frontiers, 2019,26 (3): 220-235.
ZHANG J, FAN T, LI J, et al. Characterization of the Lower Cambrian shale in the northwestern Guizhou Province, South China: Implications for Shale-Gas Potential[J]. Energy & Fuels, 2015,29(10):6383-6393.
XIA J, SONG Z, WANG S, et al. Preliminary study of pore structure and methane sorption capacity of the Lower Cambrian shales from the north Guizhou Province[J]. Journal of Natural Gas Science and Engineering, 2017,38:81-93.
LAI F Q, LUO H, GONG D J, et al. A new evaluation model of shale gas reservoir brittleness index: A case study of Lower Cambrian Niutitang Formation shale reservoir in Guizhou[J]. Progress in Geophysics, 2018,33(6): 2358-2367.
WANG X H. Fracture Characterization and Gas Control of Lower Cambrian Niutitang Formation Shale Reservoir in Cengong Block, Northern Guizhou[D]. Beijing:China University of Geosciences (Beijing), 2020:23-30.
JIA Z B,HOU D J,SUN D Q,et al.Identification criteria of hydro-thermal sedimentation and its coupling relationship with source rocks[J]. Natural Gas Geoscience,2016,27(6): 1025-1034.
YANG X, XIE H, WANG Z G, et al. Geochemical characteristics of rare earth elements in Tongrenba yellow phosphorite and their indicative significance[J].Journal of the Chinese Rare Earth Society,2018,36(6):760-768.
FU Y, ZHOU W X, WANG H J, et al. Sedimentary environment and geochemical response of Lower Cambrian black rock series in northern Guizhou[J]. Acta Geologica Sinica, 2021,95(2):536-548.
WEI S C, CHEN Q F, FU Y, et al. Discussion on the genesis of siliceous rocks at the intersection of Ediacaran and Cambrian in Hunan Guizhou area: Evidence from rare earth elements and Ge / Si ratio[J]. Journal of Peking University: Edition of Natural Science, 2018,54(5):1010-1020.
XIA P, FU Y, YANG Z, et al. Relationship between sedimentary environment and organic matter enrichment of black shale in Niutitang Formation, Zhenyuan, northern Guizhou[J]. Acta Geologica Sinica, 2020,94 (3):947-956.
BRYN J, C. M D A. Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones[J]. Chemical Geology, 1994,111(1-4):111-129.
HE L, WANG Y P, CHEN D F, et al. Relationship between sedimentary environment and organic matter enrichment of black shale from Wufeng Formation to Longmaxi Formation in Nanchuan area,Chongqing[J].Natural Gas Geoscience,2019,30(2):203-218.
WIGNALL P B,TWITCHETT R J. Oceanic anoxia and the End Permian mass extinction[J]. Science, 1996,272(5265):1155-1158.
WANG F, LIU X C, DENG X Q, et al. Trace element geochemical characteristics and sedimentary environment indication of Zhifang Formation in Ordos Basin[J]. Acta Sedimentologica Sinica, 2017,35 (6): 1265-1273.
... Shale lithofacies distribution of the Niutitang Formation(the sedimentary facies base map is modified from Ref.[26])Fig.43 岩相-沉积环境-有机质分布3.1 岩相与沉积环境