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CHANG Jia, CHEN Shiyue, WANG Qiong, PU Xiugang, YANG Huaiyu. Sequence stratigraphy and coal accumulation of barrier coastal system under epicontinental-sea environment: A case study of the Late Paleozoic Taiyuan Formation in Bohai Bay Area[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(4): 123-133. DOI: 10.3969/j.issn.1001-1986.2021.04.015
Citation: CHANG Jia, CHEN Shiyue, WANG Qiong, PU Xiugang, YANG Huaiyu. Sequence stratigraphy and coal accumulation of barrier coastal system under epicontinental-sea environment: A case study of the Late Paleozoic Taiyuan Formation in Bohai Bay Area[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(4): 123-133. DOI: 10.3969/j.issn.1001-1986.2021.04.015
shu

Sequence stratigraphy and coal accumulation of barrier coastal system under epicontinental-sea environment: A case study of the Late Paleozoic Taiyuan Formation in Bohai Bay Area

  • 1.

    School of Geosciences, China University of Petroleum(East China), Qingdao 266580, China

  • 2.

    The Third Institute of Geology and Mineral Resources of Shandong Province, Yantai 264003, China

  • 3.

    PetroChina Dagang Oilfield Company, Tianjin 300280, China

  • 4.

    Research Institute of Petroleum Exploration and Development, Shengli Oilfield Company, SINOPEC, Dongying 257015, China

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  • Received Date: January 05, 2021
  • Revised Date: April 26, 2021
  • Available Online: September 09, 2021
  • Published Date: August 24, 2021
    Graphical Abstract
    • Abstract
  • The Bohai Bay Area, located in the east of North China, is an important area for coal production in China. There are many coal seams available for industrial exploitation in the Late Paleozoic, among which the marine coal seams developed in the epicontinental-sea environment are the most widely distributed. In order to study the sedimentary sequence and coal accumulation model of the barrier coastal system in the epicontinental-sea environment, this paper studies the sedimentology and sequence stratigraphy of the Late Paleozoic Taiyuan Formation in the Bohai Bay Area, combining with drilling and field profile data. Based on the identification of lithology and sedimentary facies, the study of sequence stratigraphy is carried out to reveal the coal accumulation model of the barrier coastal system in the sequence stratigraphic framework. Taiyuan Formation is mainly composed of yellowish brown, gray black mudstone and yellow green and gray white sandstone, with several layers of marine limestone and coal seams. The sedimentary facies are mainly tidal flat facies, lagoon facies, barrier island facies and platform facies. Against the background of the barrier coastal system, the base level and the sedimentary interface are basically the same, and the sequence boundary is mostly sedimentary interface. According to the two types of subaerial unconformities(SU) including sedimentary facies transition surface and incised valley scour surface and transgressive direction transition surface(TDS), Taiyuan Formation can be divided into Sq1, Sq2 and Sq3. The third order sequence is divided into LST, TST and HST system tracts by maximum flooding surface(MFS) and maximum regression surface(MRS), representing eight fourth order sequences. During the period of Sq1, the internal area of the basin fails to provide a stable coal accumulation environment, and the thickness of the coal seams is relatively thin. During the Sq2 period, the influence of sea level on the Area increases, the coal accumulation reaches the peak, and the overall thickness of the coal seams increases and connects into slices. During the period of Sq3, the coal accumulation relatively weakens, and the distribution range of coal accumulation centers contracts, developing in isolation. The statistics of cumulative thickness of the coal seams in drilling data reveal that thick coal seams are mainly developed in the eastern part of Jizhong depression area, Huanghua depression area and Jiyang depression area. The coal accumulation model of Taiyuan Formation in the study area can be divided into five stages: LST, early TST, middle TST, late TST and HST. Under the control of the growth rate of accommodation space and peat accumulation rate, peat flat and lagoon are favorable coal accumulation centers.
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    • References (32)
  • [1]
    韩德馨, 杨起. 中国煤田地质学: 下册[M]. 北京: 煤炭工业出版社, 1980.

    HAN Dexin, YANG Qi. Coalfield geology of China(Volume 2)[M]. Beijing: China Coal Industry Publishing House, 1980.
    [2]
    侯中帅, 陈世悦, 郭宇鑫, 等. 华北中南部博山地区上古生界沉积相与沉积演化特征[J]. 沉积学报, 2018, 36(4): 731-742. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201804009.htm

    HOU Zhongshuai, CHEN Shiyue, GUO Yuxin, et al. Sedimentary facies and their evolution characteristics of Upper Paleozoic in Zibo Boshan area, central and southern region of north China[J]. Acta Sedimentologica Sinica, 2018, 36(4): 731-742. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201804009.htm
    [3]
    鄢继华, 常嘉, 陈世悦, 等. 秦皇岛地区上古生界沉积特征与沉积演化[J]. 古地理学报, 2019, 21(5): 743-756. https://www.cnki.com.cn/Article/CJFDTOTAL-GDLX201905004.htm

    YAN Jihua, CHANG Jia, CHEN Shiyue, et al. Sedimentary characteristics and evolution of the Upper Paleozoic strata in Qinhuangdao area[J]. Journal of Palaeogeography, 2019, 21(5): 743-756. https://www.cnki.com.cn/Article/CJFDTOTAL-GDLX201905004.htm
    [4]
    鲁静, 邵龙义, 李文灿, 等. 层序格架内障壁海岸沉积体系古地理背景下聚煤作用[J]. 煤炭学报, 2012, 37(1): 78-85. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201201017.htm

    LU Jing, SHAO Longyi, LI Wencan, et al. Paleogeographic evolution and coal accumulation under sequence stratigraphic framework of a barrier coast[J]. Journal of China Coal Society, 2012, 37(1): 78-85. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201201017.htm
    [5]
    朱利华. 古交杨庄勘探区晋祠组-太原组层序格架古地理演化及聚煤规律[D]. 徐州: 中国矿业大学, 2016.

    ZHU Lihua. Palaoeogeographic evolution and coal accumulation pattern under a sequence stratigraphy framework study on Jinci-Taiyuan Formation in Yangzhuang, Gujiao[D]. Xuzhou: China University of Mining and Technology, 2016.
    [6]
    李宝芳, 温显端, 李贵东. 华北石炭、二叠系高分辨层序地层分析[J]. 地学前缘, 1999, 6(S): 81-94. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY1999S1018.htm

    LI Baofang, WEN Xianduan, LI Guidong. High resolution sequence stratigraphy analysis on the Permo-Carboniferous in north China platform[J]. Earth Science Frontiers, 1999, 6(S): 81-94. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY1999S1018.htm
    [7]
    李增学, 魏久传, 韩美莲. 鲁西陆表海盆地高分辨率层序划分与海侵过程成煤特点[J]. 沉积学报, 2000, 18(3): 362-368. DOI: 10.3969/j.issn.1000-0550.2000.03.007

    LI Zengxue, WEI Jiuchuan, HAN Meilian. The division of high-resolution sequences and the transgressive coal formation in the epicontinental basin of the western Shandong Province[J]. Acta Sedimentologica Sinica, 2000, 18(3): 362-368. DOI: 10.3969/j.issn.1000-0550.2000.03.007
    [8]
    邵龙义, 何志平, 鲁静. 环渤海湾西部石炭系-二叠系层序地层及聚煤作用研究[M]. 北京: 地质出版社, 2008.

    SHAO Longyi, HE Zhiping, LU Jing. Sequence stratigraphy and coal accumulation of Carboniferous-Permian in the western Bohai bay basin[M]. Beijing: Geological Publishing House, 2008.
    [9]
    桑树勋, 陈世悦, 刘焕杰. 华北晚古生代成煤环境与成煤模式多样性研究[J]. 地质科学, 2001, 36(2): 212-221. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX200102010.htm

    SANG Shuxun, CHEN Shiyue, LIU Huanjie. Study on diversity of Late Paleozoic coal-forming environments and models in north China[J]. Chinese Journal of Geology, 2001, 36(2): 212-221. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX200102010.htm
    [10]
    吕大炜, 李增学, 王东东, 等. 华北晚古生代陆表海盆地海侵事件微观沉积特征及成煤探讨[J]. 沉积学报, 2015, 33(4): 633-640. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201504001.htm

    LYU Dawei, LI Zengxue, WANG Dongdong, et al. Discussion on micro-characteristics of transgressive event deposition and its coal-forming mechanism in the Late Paleozoic epicontinental sea basin of north China[J]. Acta Sedimentologica Sinica, 2015, 33(4): 633-640. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201504001.htm
    [11]
    常嘉, 陈世悦, 鄢继华. 淄博博山地区晚古生代煤系层序地层与聚煤作用[J]. 沉积学报, 2019, 37(5): 968-980. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201905008.htm

    CHANG Jia, CHEN Shiyue, YAN Jihua. Sequence stratigraphy and coal accumulation in Late Paleozoic coal-bearing strata in Zibo Boshan area[J]. Acta Sedimentologica Sinica, 2019, 37(5): 968-980. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201905008.htm
    [12]
    徐备, 陈斌. 内蒙古北部华北板块与西伯利亚板块之间中古生代造山带的结构及演化[J]. 中国科学(D辑), 1997, 27(3): 227-232. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199703005.htm

    XU Bei, CHEN Bin. Structure and evolution of the Mesozoic orogenic belt between north China plate and Siberian plate in northern Inner Mongolia[J]. Science in China(Series D), 1997, 27(3): 227-232. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199703005.htm
    [13]
    李益龙, 周汉文, 钟增球, 等. 华北与西伯利亚板块的对接过程: 来自西拉木伦缝合带变形花岗岩锆石LA-ICP-MS U-Pb年龄证据[J]. 地球科学, 2009, 34(6): 931-938. DOI: 10.3321/j.issn:1000-2383.2009.06.007

    LI Yilong, ZHOU Hanwen, ZHONG Zengqiu, et al. Collision processes of north China and Siberian plates: evidence from LA-ICP-MS Zirbon U-Pb age on deformed granite in Xar Moron Suture zone[J]. Earth Science, 2009, 34(6): 931-938. DOI: 10.3321/j.issn:1000-2383.2009.06.007
    [14]
    孟庆鹏, 贺元凯, 张文, 等. 华北板块北缘古大洋闭合时间的限定: 来自四子王旗西后壕子同碰撞花岗岩的证据[J]. 地质通报, 2013, 32(11): 1749-1759. DOI: 10.3969/j.issn.1671-2552.2013.11.007

    MENG Qingpeng, HE Yuankai, ZHANG Wen, et al. Time constraints on the closure of the Paleo-Asian ocean on the northern margin of north China craton: evidence from Xihouhaozisyn-collisional granites in Siziwang Qi area[J]. Geological Bulletin of China, 2013, 32(11): 1749-1759. DOI: 10.3969/j.issn.1671-2552.2013.11.007
    [15]
    李理, 赵利, 刘海剑, 等. 渤海湾盆地晚中生代-新生代伸展和走滑构造及深部背景[J]. 地质科学, 2015, 50(2): 446-472. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX201502007.htm

    LI Li, ZHAO Li, LIU Haijian, et al. Late Mesozoic to Cenozoic extension and strike slip structures and deep background of Bohai bay basin[J]. Chinese Journal of Geology, 2015, 50(2): 446-472. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX201502007.htm
    [16]
    徐守余, 严科. 渤海湾盆地构造体系与油气分布[J]. 地质力学学报, 2005, 11(3): 259-265. DOI: 10.3969/j.issn.1006-6616.2005.03.007

    XU Shouyu, YAN Ke. Structural system and hydrocarbon distribution in the Bohai gulf basin[J]. Journal of Geomechanics, 2005, 11(3): 259-265. DOI: 10.3969/j.issn.1006-6616.2005.03.007
    [17]
    刘焕杰. 潮坪成煤环境初论: 三汇坝地区晚二迭世龙潭组含煤建造沉积环境模式[J]. 中国矿业学院学报, 1982(2): 61-71. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD198202007.htm

    LIU Huanjie. A Preliminary study of coal-forming environment of tidal flats: models of sedimentary environment of Upper Permian coal-bearing Longtan Formation in Sanhuiba[J]. Journal of China University of Mining and Technology, 1982(2): 61-71. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD198202007.htm
    [18]
    李增学, 吕大炜, 刘海燕, 等. 含煤系统理论体系及应用[M]. 北京: 科学出版社, 2016.

    LI Zengxue, LYU Dawei, LIU Haiyan, et al. The theory system and application of coal containing system[M]. Beijing: Science Press, 2016.
    [19]
    VAIL P R, AUDEMARD F, BOWMAN S. The stratigraphic signatures of tectonics, eustasy and sedimentology: cycles and events in stratigraphy[J]. AAPG Bulletin, 1991, 11(3): 617-659. http://www.researchgate.net/publication/285375295_The_stratigraphic_signatures_of_tectonics_eustasy_and_sedimentology_Cycles_and_events_in_stratigraphy_J
    [20]
    杨仁超. 鄂尔多斯盆地东部古生界沉积相与层序地层学研究[D]. 西安: 西北大学, 2002.

    YANG Renchao. Research on sedimentary facies and sequence stratigraphy in the Palaeozoic in the eastern part of Ordos basin[D]. Xi'an: Northwest University, 2002.
    [21]
    邵龙义, 董大啸, 李明培, 等. 华北石炭-二叠纪层序-古地理及聚煤规律[J]. 煤炭学报, 2014, 39(8): 1725-1734. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201408046.htm

    SHAO Longyi, DONG Daxiao, LI Mingpei, et al. Sequence paleogeography and coal accumulation of the Carboniferous-Permian in the north China basin[J]. Journal of China Coal Society, 2014, 39(8): 1725-1734. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201408046.htm
    [22]
    李增学, 魏久传. 华北陆表海盆地南部层序地层分析[M]. 北京: 地质出版社, 1998.

    LI Zengxue, WEI Jiuchuan. Sequence stratigraphy analysis of the southern part of the north China epicontinental basin[M]. Beijing: Geological Publishing House, 1998.
    [23]
    李增学, 吕大炜, 王东东, 等. 多元聚煤理论体系及聚煤模式[J]. 地球学报, 2015, 36(3): 271-282. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201503002.htm

    LI Zengxue, LYU Dawei, WANG Dongdong, et al. The multiple coal-forming theoretical system and its model[J]. Acta Geoscientica Sinica, 2015, 36(3): 271-282. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201503002.htm
    [24]
    鲁静, 邵龙义, 孙斌, 等. 鄂尔多斯盆地东缘石炭-二叠纪煤系层序-古地理与聚煤作用[J]. 煤炭学报, 2012, 37(5): 747-754. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201205008.htm

    LU Jing, SHAO Longyi, SUN Bin, et al. Sequence-paleogeography and coal accumulation of Carboniferous-Permian coal measures in the eastern Ordos basin[J]. Journal of China Coal Society, 2012, 37(5): 747-754. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201205008.htm
    [25]
    王东方. 中朝陆台北缘大陆构造地质[M]. 北京: 地震出版社, 1992.

    WANG Dongfang. Continental tectonic geology of the northern margin of the Sino Korean platform[M]. Beijing: Seismological Press, 1992.
    [26]
    范国清. 华北石炭纪海侵活动规律[J]. 中国区域地质, 1991(4): 349-355. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD199104008.htm

    FAN Guoqing. Carboniferous marine transgression in north China[J]. Regional Geology of China, 1991(4): 349-355. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD199104008.htm
    [27]
    武法东, 陈钟惠, 张守良, 等. 华北晚古生代含煤盆地层序地层初探[J]. 中国煤田地质, 1994, 6(1): 11-18. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGMT401.002.htm

    WU Fadong, CHEN Zhonghui, ZHANG Shouliang, et al. Sequence stratigraphy of Late Paleozoic coal bearing basins in north China[J]. Coal Geology of China, 1994, 6(1): 11-18. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGMT401.002.htm
    [28]
    尚冠雄. 华北晚古生代聚煤盆地造盆构造述略[J]. 中国煤田地质, 1995, 7(2): 1-6. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGMT502.000.htm

    SHANG Guanxiong. An outline of basining structures of north China Late Palaeozoic coal accumulation basin[J]. Coal Geology of China, 1995, 7(2): 1-6. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGMT502.000.htm
    [29]
    王东方. 中国东部中亚构造带及向环太平洋构造带的转化[J]. 华北地质矿产杂志, 1995, 10(2): 135-142. https://www.cnki.com.cn/Article/CJFDTOTAL-HBDZ502.001.htm

    WANG Dongfang. A discussion on the tectonic zone of middle Asia and its transformation to tectonic zone of circum Pacific Ocean in eastern China[J]. Jour Geol & Min Res North China, 1995, 10(2): 135-142. https://www.cnki.com.cn/Article/CJFDTOTAL-HBDZ502.001.htm
    [30]
    STACH E., MACKOWSKY M T, TEICHMULLER M, et al. Textbook of coal petrology[M]. Gebruder Borntraeget, 1982.
    [31]
    BOHACS K, SUTER J. Sequence stratigraphic distribution of coaly rocks: Fundamental controls and paralic examples[J]. AAPG Bulletin, 1997, 81(10): 1612-1639. DOI: 10.1306/7834e192-1721-11d7-8645000102c1865d
    [32]
    GIBLING M R, SAUNDERS K I, TIBERT N E, et al. Sequence sets, high-accommodation events and the coal window in the Carboniferous Sydney Coalfield, Atlantic Canada[J]. AAPG Studies in Geology, 2004, 51: 169-197. http://archives.datapages.com/data/specpubs/study51/Chapter8/CHAPTER8.HTM
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