Stratigraphic sequences and sedimentary facies of Qigebulak Formation at Xianerbulak, Tarim Basin
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摘要: 震旦纪是塔里木盆地被动大陆边缘盆地重要的发育期。通过对阿克苏肖尔布拉克剖面上震旦统奇格布拉克组的实测及综合分析认为:奇格布拉克组的底、顶部分别发育Ⅲ级沉积间断的岩相转换面和Ⅱ级海侵上超层序不整合界面;内部发育加深间断面、向上变浅的Ⅳ至Ⅴ级层序界面,发育了受海平面变化控制的环潮型(向上变浅、变细、变薄)至潮下型(向上变浅、变粗、变厚)的碳酸盐岩米级旋回,叠层石相对发育,可能由多种形态的微生物席构成。奇格布拉克组可划分为下、中、上3个岩性段:其中,下亚段为潮上至潮间、潮间下部至潮间、潮间至潮上的振荡变化,中段为潮间下部至潮下带的频繁、振荡变化至潮下稳定的沉积环境;对应的碳同位素呈底部较强烈正偏,中上部较为稳定,且上部稍弱正偏的特征;海平面具有下部频繁变动、中上部稳定下降的变化趋势。Abstract: Sinian is one of the most important stages of the development of passive continental margin basin in the Tarim Basin. Based on the measurement and analysis of profiles of the Qigebulak Formation (Z2g) of the upper Sinian at Xianerbulak of Aksu, it has been concluded that the Ⅲ-order sequence boundary surfaces with hiatus and lithofacies transition and the Ⅱ-order surfaces with transgressive onlap and sequence unconformity interface develop at the bottom and on the top of the Qigebulak Formation, respectively. In the middle of the formation, deepening interruption surface and shallowing-upward Ⅳ-Ⅴ sequences develop. The Milankovitch cycle of carbonate rocks has been found, under either peritidal (becoming shallow, fine-grained and thin upwards) or subtidal (becoming shallow, coarse-grained and thick upwards) environments controlled by sea level changes. Stromatolites are widespread, mainly consisting of various microbial mats. The Qigebulak Formation can be divided into 3 lithologic sections from bottom to top, among which the lower section changes from supratidal to intertidal, the lower part of intertidal to intertidal, and intertidal to supratidal; the middle section is characterized by the frequent variation from the lower part of intertidal to subtidal and the stable environment of subtidal. Carbon isotopes are strongly positive at the bottom, stable in the middle and upper sections, and weakly positive at the top. Sea levels change frequently at the bottom, and stably decrease in the middle and upper sections.
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Key words:
- sedimentary facies /
- sequence boundary /
- microbial rock /
- Qigebulak Formation /
- upper Sinian /
- Aksu /
- Tarim Basin
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[1] 张师本, 倪寓南, 龚福华, 等.塔里木盆地周缘地层考察指南[M].北京:石油工业出版社, 2003. Zhang Shiben, Ni Yu'nan, Gong Fuhua, et al.A guide to the stratigraphic investigation on the periphery of the Tarim basin[M].Beijing:Petroleum Industry Press, 2003. [2] 高振家, 王务实, 彭昌文, 等.新疆阿克苏—乌什地区震旦系[M].乌鲁木齐:新疆人民出版社, 1985. Gao Zhenjia, Wang Wushi, Peng Changwen, et al.The sinian system of Aksu-Wushi region, Xinjiang, China[M].Urumqi:Xinjiang People's Publishing House, 1985. [3] 马世鹏, 汪玉珍, 方锡廉.西昆仑山北坡的震旦系[J].新疆地质, 1989, 7(4):68-79. Ma Shipeng, Wang Yuzhen, Fang Xilian.The Sinian at North slope western Kunlun mountains[J].Xinjiang Geology, 1989, 7(4):68-79. [4] 张增耀, 杨松岭, 赵秀岐.塔里木盆地盆内震旦系特征[J].海相油气地质, 2007, 12(2):51-56. Zhang Zengyao, Yang Songling, Zhao Xiuqi.Characteristic of intrabasinal Sinian sedimentary system in Tarim basin[J].Marine Origin Petroleum Geology, 2007, 12(2):51-56. [5] 何金有, 徐备, 孟祥英, 等.新疆库鲁克塔格地区新元古代层序地层学研究及对比[J].岩石学报, 2007, 23(7):1645-1654. He Jinyou, Xu Bei, Meng Xiangying, et al.Neoproterozoic sequence stratigraphy and correlation in Quruqtagh, Xinjiang[J].Acta Petrologica Sinica, 2007, 23(7):1645-1654. [6] 刘兵, 徐备, 孟祥英, 等.塔里木板块新元古代地层化学蚀变指数研究及其意义[J].岩石学报, 2007, 23(7):1664-1670. Liu Bing, Xu Bei, Meng Xiangying, et al.Study on the chemical index of alteration of Neoproterozoic strata in the Tarim plate and its implications[J].Acta Petrologica Sinica, 2007, 23(7):1664-1670. [7] 宗文明, 高林志, 丁孝忠, 等.塔里木盆地西南缘南华纪冰碛岩特征与地层对比[J].中国地质, 2010, 37(4):1184-1190. Zong Wenming, Gao Linzhi, Ding Xiaozhong, et al.Characteristics of Nanhuan diamictite(tillite)and stratigraphic correlation in the southwestern margin of Tarim Basin[J].Geology in China, 2010, 37(4):1184-1190. [8] 何秀彬, 徐备, 袁志云.新疆柯坪地区新元古代晚期地层碳同位素组成及其对比[J].科学通报, 2007, 52(1):107-113. He Xiubin, Xu Bei, Yuan Zhiyun.Composition and contrast of carbon isotopes in formation during late Neoproterozoic in Keping area, Xinjiang[J].Chinese Science Bulletin, 2007, 52(1):107-113. [9] 何金有, 邬光辉, 徐备, 等.塔里木盆地震旦系—寒武系不整合面特征及油气勘探意义[J].地质科学, 2010, 45(3):698-706. He Jinyou, Wu Guanghui, Xu Bei, et al.Characteristics and petroleum exploration significance of unconformity between Sinian and Cambrian in Tarim Basin[J].Chinese Journal of Geology, 2010, 45(3):698-706. [10] 钱一雄, 尤东华, 陈代钊, 等.塔里木盆地肖尔布拉克上震旦统苏盖特布拉克组层序界面与沉积相[J].地质科学, 2011, 46(2):445-455. Qian Yixiong, You Donghua, Chen Daizhao, et al.The stratigraphic and sedimentation analysis of Sugaitbulak Formation of the Upper Sinian at Xianerbulak of Aksu in Tarim Basin[J].Chinese Journal of Geology, 2011, 46(2):445-455. [11] 王小林, 胡文瑄, 陈琪, 等.塔里木盆地柯坪地区上震旦统藻白云岩特征及其成因机理[J].地质学报, 2010, 84(10):1479-1494. Wang Xiaolin, Hu Wenxuan, Chen Qi, et al.Characteristics and formation mechanism of Upper Sinian Algal Dolomite at the Kalpin Area, Tarim Basin, NW China[J].Acta Geologica Sinica, 2010, 84(10):1479-1494. [12] Catuneanu O A.Principles of Sequence stratigraphy[M].Amsterdant:Elsevier, 2007. [13] 樊太亮, 于炳松, 高志前.塔里木盆地碳酸盐岩层序地层特征及其控油作用[J].现代地质, 2007, 21(1):57-65. Fan Tailiang, Yu Bingsong, Gao Zhiqian.Characteristics of carbonate sequence stratigraphy and its control on oil-gas in Tarim Basin[J].Geoscience, 2007, 21(1):57-65. [14] 顾家裕, 马锋, 季丽丹.碳酸盐岩台地类型、特征及主控因素[J].古地理学报, 2009, 11(1):21-27. Gu Jiayu, Ma Feng, Ji Lidan.Types, Characteristics and main controlling factors of carbonate platform[J].Journal of Palaeogeography, 2009, 11(1):21-27. [15] Budd D A, Saller A H, Harris P M.Unconformities and porosity in carbonate strata:AAPG Memoir 63[M].Tulsa, Oklahoma:AAPG, 1995:1-63. [16] Catuneanu O A, Abreu V B, Bhattacharya P, et al.Towards the standardization of sequence stratigraphy[J].Earth-Science Reviews, 2009, 92(1-2):1-33. [17] Ginsburg R N.Controversies about stromatolites;vice and virtues[M]//Muller D W, MeKenzie J A, Weissert H, eds.Controversiesin Modem Geology.London:Academic Press, 1991:25-36. [18] Riding R.Microbial carbonates:the geological record of calcified bacterial-algal mats and biofilms[J].Sedimentology, 2000, 47(S1):179-214. [19] Riding R.Structure and composition of organic reefs and carbonate mud mounds:concepts and categories[J].Earth-Science Reviews, 2002, 58(1):163-231. [20] 温志峰, 钟建华, 李勇, 等.叠层石成因和形成条件的研究综述[J].高校地质学报, 2004, 10(3):418-428. Wen Zhifeng, Zhong Jianhua, Li Yong, et al.Current study on genesis and formation conditions of stromatolites[J].Geological Journal of China Universitiy, 2004, 10(3):418-428. [21] 曹瑞骥, 袁训来.中国叠层石研究进展[J].古生物学报, 2009, 48(3):314-321. Cao Ruiji, Yuan Xunlai.Advances of stromatolites study in China[J].Acta Palaeontologica Sinica, 2009, 48(3):314-321. [22] 由雪莲, 孙枢, 朱井泉, 等.微生物白云岩模式研究进展[J].地学前缘, 2011, 18(4):52-64. You Xuelian, Sun Shu, Zhu Jingquan, et al.Progress in the study of microbial dolomite model[J].Earth Science Frontiers, 2011, 18(4):52-64. [23] Gebelein C D.The effects of the physical, chemical and bioloigcal evolution of the earth[M]//Walter M R, ed.Development sedimentology 20:Stromatolites.New York:Elsevier, 1976:499-515. [24] Tanja B, Dianne K N.Microbial nucleation of calcium carbonate in the Precambrian[J].Geology, 2003, 31(7):577-580. [25] Schopf J W, Anatoliy B K, Andrew D C, et al.Evidence of Archean life:Stromatolites and microfossils[J].Precambrian Research, 2007, 158(1):141-155. [26] Woodfine R G, Jenkyns H C, Sarti M, et al.The response of two Tethyan carbonate platforms to the early Toarcian(Jurassic) oceanic anoxic event:environmental change and differential subsidence[J].Sedimentology, 2008, 55(4):1011-1028. [27] 马永生, 梅冥相, 陈小兵, 等.碳酸盐岩储层沉积学[M].北京:地质出版社, 1999. Ma Yongsheng, Mei Mingxiang, Chen Xiaobing, et al.Sedimento-logy of carbonate reservoirs[M].Beijing:Geology Press, 1999. [28] Blendinger W.Sea level changes versus hydrothermal diagenesis:Origin of Triassic carbonate platform cycle in the Dolomites, Italy[J].Sedimentary Geology, 2004, 169(1-2):21-28. [29] Mateu-Vicens G, Pomar L, Tropeano M.Architectural complexity of a carbonate transgressive systems tract induced by basement physiography[J].Sedimentology, 2008, 55(6):1815-1848. [30] 潘文庆, 刘永福, Dickon J A D, 等.塔里木盆地下古生界碳酸盐岩热液岩溶的特征及地质模型[J].沉积学报, 2009, 27(5):983-994. Pan Wenqing, Liu Yongfu, Dickon J A D, et al.The geological model of hydrothermal activity in outcrop and the characteristics of carbonate hydrothermal Karst of Lower Paleozoic in Tarim basin[J].Acta Sedimentologica Sinica, 2009, 27(5):983-994. [31] 张同纲, 储雪蕾, 张启锐, 等.陡山沱期的古海水的碳和硫同位素变化[J].科学通报, 2003, 48(8):852-855. Zhang Tonggang, Chu Xuelei, Zhang Qirui, et al.Variations of carbon and sulfur isotopes in ancient seawater during Doushantuo period[J].Chinese Science Bulletin, 2003, 48(8):852-855.
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