鄂尔多斯盆地奥陶系马家沟组五段5亚段斑化白云岩成因

廖慧鸿; 苏中堂; 黄文明; 马慧; 佘伟; 罗振锋; 刘国庆; 胡孙龙

doi:10.11781/sysydz202205835

鄂尔多斯盆地奥陶系马家沟组五段5亚段斑化白云岩成因

doi: 10.11781/sysydz202205835

廖慧鸿^1,,
苏中堂^{1, 2, ,},
黄文明³,
马慧¹,
佘伟¹,
罗振锋¹,
刘国庆¹,
胡孙龙¹

1.
成都理工大学沉积地质研究院, 成都 610059
2.
成都理工大学油气藏地质及开发工程国家重点实验室, 成都 610059
3.
中国石油川庆钻探工程有限公司苏里格项目经理部, 成都 610051

基金项目:

国家自然科学青年基金“鄂尔多斯盆地天环地区下奥陶统白云岩成因机制分析” 41302087

详细信息

作者简介:
廖慧鸿(1996-), 男, 硕士研究生, 从事沉积地质学研究。E-mail: 1316236646@qq.com

通讯作者:
苏中堂(1981-), 男, 博士, 副教授, 从事沉积地质学研究。E-mail: suzhongtang2012@cdut.edu.cn

中图分类号: TE122.2
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出版历程
- 收稿日期: 2021-08-15
- 修回日期: 2022-07-12
- 刊出日期: 2022-09-28

Origin of porphyry dolomite in the 5th sub-member of the 5th member of Ordovician Majiagou Formation (M₅⁵sub-member), Ordos Basin

1.
Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, Sichuan 610059, China
2.
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China
3.
Sulige Project Management Department, Chuanqing Drilling Engineering Co., Ltd., CNPC, Chengdu, Sichuan 610051, China

摘要

摘要: 鄂尔多斯盆地中东部奥陶系马家沟组五段5亚段发现大量不均一斑化白云岩，多口钻井油气显示良好，成为油气勘探关注的热点，但成因机理尚未明确。依据岩石学特征，辅以地球化学分析，研究了斑化白云岩成因。斑化白云岩可分为不均匀斑化白云岩、明显斑化含灰云岩和略微斑化灰质云岩3类，根据云斑的形态特征认为云斑构造受到生物扰动所致，白云岩斑点与基质的阴极发光相同；斑化白云岩总体具有较高的Fe，Mn，Na和较低的Sr含量，斑点与基质的Fe，Mn和Sr的含量无明显差别；斑化白云岩δ¹³C值与同期海水相同，δ¹⁸O值均偏负，三类白云岩无明显差别；⁸⁷Sr/⁸⁶Sr比值高于同期海水。岩石学和地球化学特征表明生物扰动使岩石不均一，扰动程度影响斑化程度，斑化白云岩系生物扰动灰岩经高盐度海水渗透回流白云石化作用而成，白云岩再埋藏后经历了重结晶作用改造。
- 斑化白云岩 /
- 地球化学特征 /
- 渗透回流白云岩化 /
- 马五段5亚段 /
- 鄂尔多斯盆地
Abstract: Large number of heterogeneous porphyry dolomites have been found in the 5th sub-member of the 5th member of Ordovician Majiagou Formation (M₅⁵ sub-member) in the central and eastern parts of Ordos Basin, and many drilled wells have shown good oil and gas potential, which has become the focus for oil and gas exploration, but the genetic mechanism is still undetermined. Based on petrological characteristics and geochemical analysis, the origin of porphyry dolomite in this area is studied. Results show that porphyry dolomite can be classified into three types: unevenly, obviously and slightly porphyry dolomite. According to the morphology characteristics of cloud spots, the structure of cloud spots is supposed to be caused by biological disturbance, and the cathodoluminescence of spots and matrix is the same. Porphyry dolomite has relatively higher contents of Fe, Mn and Na and lower content of Sr, but there is no significant difference between the contents of Fe, Mn and Sr in spots and matrix. The δ¹³C values of porphyry dolomites are highly comparable to those of seawater at the same time, and the δ¹⁸O values are all negative with no significant difference among the three types of dolomites. The ratio of ⁸⁷Sr/⁸⁶Sr is higher than that of seawater in the same period. Petrological and geochemical characteristics show that biodisturbance causes the heterogeneity of rocks, and the degree of disturbance affects porphyry rate. The biodisturbed limestone of porphyry dolomite series is formed by the dolomitization of the osmotic reflux of high salinity seawater. The dolomite underwent recrystallization after re-burial.
- porphyry dolomite /
- geochemical characteristics /
- osmotic reflux dolomitization /
- 5th sub-member of 5th member of Majiagou Formation /
- Ordos Basin

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图 1 鄂尔多斯盆地中东部奥陶系马五₅亚段岩相古地理(a)及地层柱状图(b)

据文献[23]修改

Figure 1. Lithofacies palaeogeographic map (a) and stratigraphic column map (b) of Ordovician M₅⁵ sub-member in central and eastern Ordos Basin

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图 2 鄂尔多斯盆地中东部奥陶系马五₅亚段斑化白云岩岩心、薄片特征及微区碳氧同位素分析点

a.不均匀斑化白云岩，2 450.6 m，神29井；b.明显斑化含灰云岩，2 842.9 m，双4井；c.略微斑化灰质云岩，3 120.2 m，陕16井；d.不均匀斑化白云岩，2 450.6 m，神29井；e.明显斑化含灰云岩，2 842.9 m，双4井；f.略微斑化灰质云岩，3 120.2 m，陕16井；g.不均匀斑化白云岩，2 450.6 m，神29井；h.明显斑化含灰云岩，2 510.6 m，双108井；i.明显斑化含灰云岩，2 509.8 m，双108井；j.明显斑化含灰云岩，3 391.5 m，陕377井；k.明显斑化含灰云岩，2 462.3 m，米52井；l.略微斑化灰质云岩，3 120.6 m，陕16井；图中红色点位Sp为斑点(Spot)，黄色点位Mat为基质(Matrix)

Figure 2. Cores, thin sections and carbon and oxygen isotopic analysis points in micro-area of porphyry dolomites in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

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图 3 鄂尔多斯盆地中东部奥陶系马五₅亚段斑化白云岩的阴极发光特征

a，b.不均匀斑化白云岩岩石学和发光性，斑点vs.基质，2 450.6 m，神29井；c，d.明显斑化含灰云岩岩石学和发光性，斑点与基质的边界，2 462.3 m，米52井；e，f.略微斑化灰质云岩岩石学和发光性，斑点vs.基质，3 120.6 m，陕16井

Figure 3. Cathodoluminescence characteristics of porphyry dolomite in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

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图 4 鄂尔多斯盆地中东部奥陶系马五₅亚段斑化白云岩微区Na-Sr、Mn-Sr和Fe-Mn含量交会图

Figure 4. Intersection of Na-Sr, Mn-Sr and Fe-Mn contents in porphyry dolomite microzones in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

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图 5 鄂尔多斯盆地中东部奥陶系五₅亚段斑化白云岩微区δ¹³C_PDB与δ¹⁸O_PDB交会图(a)和全岩Sr同位素分布(b)

Figure 5. Intersection diagram of δ¹³C_PDB and δ¹⁸O_PDB in porphyry dolomite microarea (a) and whole rock Sr isotopic distribution map (b) in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

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图 6 鄂尔多斯盆地中东部奥陶系马五₅亚段回流渗透白云岩化模式

Figure 6. Reflux permeation dolomitization model of Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

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表 1 鄂尔多斯盆地中东部奥陶系马五₅亚段斑化白云岩全岩地球化学特征

Table 1. Whole rock geochemical test results of porphyry dolomite in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

井号	井深/m	岩性	含量/10^-6				⁸⁷Sr/⁸⁶Sr		δ¹³C_VPDB/‰	δ¹⁸O_VPDB/‰
井号	井深/m	岩性	Na	Mn	Fe	Sr	测试结果	误差(2σ)	δ¹³C_VPDB/‰	δ¹⁸O_VPDB/‰
神29	2 450.6	不均匀斑化白云岩	46.3	48.5	1 151.6	64.5	0.710 7	0.000 176 0	-0.64	-8.02
府4	2 531.0		59.1	38.8	846.3	86.2	0.709 8	0.000 095 8	1.29	-8.51
府4	2 529.8		33.0	33.6	634.9	77.4	0.709 3	0.000 672 0	-3.31	-9.28
双4	2 841.8	明显斑化含灰云岩	66.5	46.7	1 420.2	97.1	0.709 8	0.000 052 6	-1.27	-7.99
双4	2 832.8		72.4	49.6	1 482.7	80.9	0.712 9	0.000 041 0	-0.91	-7.62
双108	2 510.5		53.3	48.0	1 040.3	58.8	0.710 8	0.000 243 0	-0.65	-7.07
陕398	3 944.4		31.2	20.1	400.9	88.0	0.709 5	0.000 057 7	-1.46	-8.07
米52	2 462.3			34.0	986.3	64.6	0.710 3	0.000 018 8	-0.39	-7.08
陕16	3 120.2	略微斑化灰质云岩	62.8	40.7	859.1	102.0	0.709 8	0.000 023 7	-0.32	-7.37
陕399	3 860.7	泥晶灰岩	25.3	17.0	155.6	97.7	0.709 2	0.000 032 6	-1.81	-8.09

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表 2 鄂尔多斯盆地中东部奥陶系马五₅亚段斑化白云岩的微区地球化学特征

Table 2. Microgeochemical test results of porphyry dolomite in Ordovician M₅⁵ sub-member, central and eastern Ordos Basin

井号	井深/m	岩性	点位性质	含量/10^-6				δ¹³C_PDB/‰	δ¹⁸O_PDB/‰
井号	井深/m	岩性	点位性质	Na	Mn	Fe	Sr	δ¹³C_PDB/‰	δ¹⁸O_PDB/‰
神29	2 450.6	不均匀斑化白云岩	1.基质	113.3	75.7	2 621.9	51.8	0.73	-7.03
神29	2 450.6		2.斑点	101.1	43.2	2 050.4	37.7	-1.19	-10.41
府4	2 531.4		1.基质	238.3	49.0	3 033.2	41.7
府4	2 531.4		2.斑点	110.8	48.1	1 692.8	39.8
双108	2 510.5	明显斑化含灰云岩	1.基质	139.1	41.8	2 161.4	40.0	-1.72	-6.88
双108	2 510.5		2.斑点	113.9	44.6	2 086.9	47.3	0.90	-8.27
双108	2 509.8		1.基质					-1.64	-9.69
双108	2 509.8		2.斑点					-1.78	-9.07
陕377	3 391.5		1.基质	137.0	48.4	1 468.0	45.3	-0.77	-8.52
			2.基质	119.5	44.4	1 587.5	49.8	-0.77	-8.52
			3.斑点	115.5	44.4	2 592.9	46.6	-0.41	-7.95
			4.斑点	84.8	45.6	1 425.2	104.3	-0.41	-7.95
米52	2 462.3		1.基质	89.4	36.4	1 799.7	50.6	-1.18	-10.61
			2.斑点	52.4	45.0	2 149.9	29.8	-1.81	-11.81
			3.斑点	111.2	35.2	1 668.8	47.3	-1.54	-12.42
			4.斑点	92.9	35.9	1 919.6	53.3
陕16	3 120.6	略微斑化灰质云岩	1.基质	58.2	45.9	1 824.7	33.7	-0.32	-8.59
			2.斑点	74.2	44.0	1 819.3	39.7	0.15	-7.88
			3.斑点	73.5	45.5	1 687.7	35.3

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表 3 生物扰动指数及其特征描述修改自文献[29]。

Table 3. Bioturbation index and its characteristics

生物扰动指数(BI)	生物扰动部分所占整块样品比值/%	描述
0	0	没有生物扰动，原生组构保存完好
1	1~4	少量生物扰动，有不连续的遗迹局部覆盖，沉积组构保存较好
2	5~30	中低等生物扰动，沉积构造保存仍然较好
3	31~60	中等生物扰动，有不连续遗迹化石的遗迹组构，仍然可以辨认出地层界面
4	61~90	强烈的生物扰动，遗迹化石密度高，原始沉积构造几乎全部被抹掉
5	91~99	强烈的生物扰动，层面沉积物被完全扰动
6	100	完全生物扰动和重新沉积，与遗迹化石重复覆盖有关

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参考文献(39)

[1]	KENDALL A C. Origin of dolomite mottling in Ordovician limestones from Saskatchewan and Manitoba[J]. Bulletin of Canadian Petroleum Geology, 1977, 25(3): 480-504.
[2]	GINGRAS M K, PEMBERTON S G, MUELENBACHS K, et al. Conceptual models for burrow-related, selective dolomitization with textural and isotopic evidence from the Tyndall stone, Canada[J]. Geobiology, 2004, 2(1): 21-30. doi: 10.1111/j.1472-4677.2004.00022.x
[3]	RAMEIL N. Early diagenetic dolomitization and dedolomitization of late Jurassic and earliest Cretaceous platform carbonates: a case study from the Jura mountains (NW Switzerland, E France)[J]. Sedimentary Geology, 2008, 212(1/4): 70-85.
[4]	JIN J, HARPER DA, RASMUSSEN JA, et al. Late Ordovician massive-bedded Thalassinoides ichnofacies along the palaeoequator of Laurentia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2012, 367-368: 73-88. doi: 10.1016/j.palaeo.2011.05.023
[5]	齐永安, 孟瑶, 代明月, 等. 豫西登封地区寒武系第二统朱砂洞组生物成因的豹斑构造[J]. 地质科技情报, 2014, 33(5): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201405001.htm QI Yongan, MENG Yao, DAI Mingyue, et al. Biogenic leopard patch structures from the Zhushadong Formation (Cambrian series 2), Dengfeng area, western Henan[J]. Geological Science and Technology Information, 2014, 33(5): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ201405001.htm
[6]	刘梦瑶, 齐永安, 史云鹤, 等. 华北寒武纪—奥陶纪豹皮状碳酸盐岩系生物扰动成因[J]. 沉积学报, 2020, 38(1): 91-103. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202001008.htm LIU Mengyao, QI Yongan, SHI Yunhe, et al. Formation mechanism of Cambrian-Ordovician bioturbated dolomites in North China[J]. Acta Sedimentologica Sinica, 2020, 38(1): 91-103. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202001008.htm
[7]	李定龙, 杨为民, 程学丰, 等. 试论皖北奥陶纪豹皮灰岩的古岩溶成因[J]. 地质论评, 1999, 45(5): 463-469. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP199905003.htm LI Dinglong, YANG Weimin, CHENG Xuefeng, et al. A discussion on the genesis of the leopard fur limestone of Ordovician period in northern Anhui, China[J]. Geological Review, 1999, 45(5): 463-469. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLP199905003.htm
[8]	郝毅, 林良彪, 周进高, 等. 川西北中二叠统栖霞组豹斑灰岩特征与成因[J]. 成都理工大学学报(自然科学版), 2012, 39(6): 651-656. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201206015.htm HAO Yi, LIN Liangbiao, ZHOU Jingao, et al. Characteristics and genesis of leopard limestone in Middle Permian Qixia Formation, northwest Sichuan, China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2012, 39(6): 651-656. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201206015.htm
[9]	WU Yongqiang, WU Zhuodan. Diagenetic modification of dolomite in middle Ordovician carbonates, Taiyuan city area, China[J]. Sedimentary Geology, 1998, 116(1/2): 143-156.
[10]	孙瑞, 陈曦, 明爽, 等. 鄂尔多斯盆地西北部奥陶系马家沟组斑状白云岩成因机理及储集特征[J]. 新疆地质, 2012, 30(4): 442-446. https://www.cnki.com.cn/Article/CJFDTOTAL-XJDI201204014.htm SUN Rui, CHEN Xi, MING Shuang, et al. Formation mechanism and its reservoir characteristics of Ordovician Majiagou Formation mottled dolomite in northwestern Ordos Basin[J]. Xinjiang Geology, 2012, 30(4): 442-446. https://www.cnki.com.cn/Article/CJFDTOTAL-XJDI201204014.htm
[11]	李波, 颜佳新, 薛武强, 等. 四川广元地区中二叠世斑状白云岩成因及地质意义[J]. 地球科学(中国地质大学学报), 2012, 37(S2): 136-146. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX2012S2020.htm LI Bo, YAN Jiaxin, XUE Wuqiang, et al. Origin of patchy dolomite and its geological signification from Middle Permian, Guangyuan, Sichuan province[J]. Earth Science(Journal of China University of Geosciences), 2012, 37(S2): 136-146. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX2012S2020.htm
[12]	龙刚, 黄萍, 林剑怀, 等. 徐州地区寒武系豹皮灰岩的岩性特征及其成因机制分析[J]. 地质学刊, 2013, 37(1): 67-70. https://www.cnki.com.cn/Article/CJFDTOTAL-JSDZ201301011.htm LONG Gang, HUANG Ping, LIN Jianhuai, et al. Lithologic characteristics of leopard limestone in Cambrian period and analysis of its formation mechanism in Xuzhou area[J]. Journal of Geology, 2013, 37(1): 67-70. https://www.cnki.com.cn/Article/CJFDTOTAL-JSDZ201301011.htm
[13]	陈云峰, 吴淦国, 王根厚. 北京周口店豹皮灰岩的变形特征[J]. 地质通报, 2007, 26(6): 769-775. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200706020.htm CHEN Yunfeng, WU Ganguo, WANG Genhou. Deformation characteristics of leopard limestone in Zhoukoudian, Beijing, China[J]. Geological Bulletin of China, 2007, 26(6): 769-775. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200706020.htm
[14]	张玉宾. 对豹斑灰岩属于不完全白云化成因的质疑[J]. 石油勘探与开发, 1995, 22(4): 45-46. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK504.010.htm ZHANG Yubin. A comment on the genesis of porphyritic dolomite due to incomplete dolomitization[J]. Petroleum Exploration and Development, 1995, 22(4): 45-46. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK504.010.htm
[15]	杨华, 包洪平. 鄂尔多斯盆地奥陶系中组合成藏特征及勘探启示[J]. 天然气工业, 2011, 31(12): 11-20. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG201112005.htm YANG Hua, BAO Hongping. Characteristics of hydrocarbon accumulation in the Middle Ordovician assemblages and their significance for gas exploration in the Ordos Basin[J]. Natural Gas Industry, 2011, 31(12): 11-20. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG201112005.htm
[16]	付金华, 范立勇, 刘新社, 等. 鄂尔多斯盆地天然气勘探新进展、前景展望和对策措施[J]. 中国石油勘探, 2019, 24(4): 418-430. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201904002.htm FU Jinhua, FAN Liyong, LIU Xinshe, et al. New progresses, prospects and countermeasures of natural gas exploration in the Ordos Basin[J]. China Petroleum Exploration, 2019, 24(4): 418-430. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201904002.htm
[17]	高星, 张道锋, 史云鹤, 等. 鄂尔多斯盆地奥陶系马五₅亚段白云石结构特征及成因[J]. 成都理工大学学报(自然科学版), 2018, 45(5): 575-584. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201805007.htm GAO Xing, ZHANG Daofeng, SHI Yunhe, et al. Study of texture and genesis of Ma₅⁵ member dolomites from Ordovician Majiagou Formation in Ordos Basin, China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2018, 45(5): 575-584. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201805007.htm
[18]	张道锋, 姚泾利, 高星, 等. 鄂尔多斯盆地奥陶系马五₅亚段白云岩储层形成机理与展布规律[J]. 天然气地球科学, 2019, 30(1): 74-82. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201901007.htm ZHANG Daofeng, YAO Jingli, GAO Xing, et al. Formation mecha-nism and distribution regularity of Ordovician Ma5₅ dolomite reservoir in Ordos Basin[J]. Natural Gas Geoscience, 2019, 30(1): 74-82. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201901007.htm
[19]	包洪平, 杨帆, 白海峰, 等. 细分小层岩相古地理编图的沉积学研究及油气勘探意义: 以鄂尔多斯地区中东部奥陶系马家沟组马五段为例[J]. 岩石学报, 2017, 33(4): 1094-1106. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201704006.htm BAO Hongping, YANG Fan, BAI Haifeng, et al. Sedimentology study on sub-member lithofacies paleogeography mapping and its petroleum exploration significance: taking Ma5 member of Lower Ordovician Majiagou Formation in central-eastern Ordos Basin for example[J]. Acta Petrologica Sinica, 2017, 33(4): 1094-1106. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201704006.htm
[20]	宁博, 王起琮, 李百强, 等. 鄂尔多斯盆地马五₅亚段白云岩化成因模式[J]. 新疆石油地质, 2015, 36(5): 531-538. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD201505007.htm NING Bo, WANG Qicong, LI Baiqiang, et al. Genetic model for M5-5 sub-member dolomitization of Majiegou Formation in Ordos Basin[J]. Xinjiang Petroleum Geology, 2015, 36(5): 531-538. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD201505007.htm
[21]	于春勇, 崔军平. 鄂尔多斯盆地伊陕斜坡东北部马家沟组马五₅亚段白云岩地球化学特征及其成因[J]. 地球科学, 2019, 44(8): 2761-2774. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201908021.htm YU Chunyong, CUI Junping. Geochemical characteristics and genesis of dolomite in Majiagou Ma₅⁵ submember of the northeast Yishan slope, Ordos Basin[J]. Earth Science, 2019, 44(8): 2761-2774. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201908021.htm
[22]	冯增昭, 鲍志东. 鄂尔多斯奥陶纪马家沟期岩相古地理[J]. 沉积学报, 1999, 17(1): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB901.000.htm FENG Zengzhao, BAO Zhidong. Lithofacies paleogeography of Majiagou age of Ordovician in Ordos Basin[J]. Acta Sedimentologica Sinica, 1999, 17(1): 1-8. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB901.000.htm
[23]	苏中堂, 佘伟, 罗静兰, 等. 鄂尔多斯盆地奥陶系马五₅亚段沉积微相与古地理演化[J]. 沉积学报, 2021, 39(6): 1344-1356. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202106003.htm SU Zhongtang, SHE Wei, LUO Jinglan, et al. Microfacies and paleogeographic evolution of Ma₅⁵ member in the Ordovician, Ordos Basin[J]. Acta Sedimentologica Sinica, 2021, 39(6): 1344-1356. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202106003.htm
[24]	侯方浩, 方少仙, 董兆雄, 等. 鄂尔多斯盆地中奥陶统马家沟组沉积环境与岩相发育特征[J]. 沉积学报, 2003(1): 106-112. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200301015.htm HOU Fanghao, FANG Shaoxian, DONG Zhaoxiong, et al. The developmental characters of sedimentary environments and lithofacies of Middle Ordovician Majiagou Formation in Ordos Basin[J]. Acta Sedimentologica Sinica, 2003, 21(1): 106-112. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB200301015.htm
[25]	ALLAN J R, WIGGINS W D. Dolomite reservoirs: geochemical techniques for evaluating origin and distribution[M]. Tulsa: American Association of Petroleum Geologists, 1993.
[26]	VEIZER J, ALA D, AZMY K, et al. ⁸⁷Sr/⁸⁶Sr, δ¹³C and δ¹⁸O evolution of Phanerozoic seawater[J]. Chemical Geology, 1999, 161(1/3): 59-88.
[27]	胡作维, 黄思静, 王春梅, 等. 锶同位素方法在油气储层成岩作用研究中的应用[J]. 地质找矿论丛, 2009, 24(2): 160-165. https://www.cnki.com.cn/Article/CJFDTOTAL-DZZK200902014.htm HU Zuowei, HUANG Sijing, WANG Chunmei, et al. Application of strontium isotope geochemistry to the oil and gas reservoir diagenesis research[J]. Contributions to Geology and Mineral Resources Research, 2009, 24(2): 160-165. https://www.cnki.com.cn/Article/CJFDTOTAL-DZZK200902014.htm
[28]	王利超, 胡文瑄, 王小林, 等. 白云岩化过程中锶含量变化及锶同位素分馏特征与意义[J]. 石油与天然气地质, 2016, 37(4): 464-472. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201604003.htm WANG Lichao, HU Wenxuan, WANG Xiaolin, et al. Variation of Sr content and ⁸⁷Sr/⁸⁶Sr isotope fractionation during dolomitization and their implications[J]. Oil & Gas Geology, 2016, 37(4): 464-472. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201604003.htm
[29]	TAYLOR A M, GOLDRING R. Description and analysis of bioturbation and ichnofabric[J]. Journal of the Geological Society, 1993, 150(1): 141-148.
[30]	苏中堂, 陈洪德, 徐粉燕, 等. 鄂尔多斯盆地马家沟组白云岩地球化学特征及白云岩化机制分析[J]. 岩石学报, 2011, 27(8): 2230-2238. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201108002.htm SU Zhongtang, CHEN Hongde, XU Fenyan, et al. Geochemistry and dolomitization mechanism of Majiagou dolomites in Ordovician, Ordos, China[J]. Acta Petrologica Sinica, 2011, 27(8): 2230-2238. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201108002.htm
[31]	黄思静. 碳酸盐岩的成岩作用[M]. 北京: 地质出版社, 2010: 288. HUANG Sijing. Carbonate diagenesis[M]. Beijing: Geological Publishing House, 2010: 288.
[32]	王保全, 强子同, 张帆, 等. 鄂尔多斯盆地奥陶系马家沟组马五段白云岩的同位素地球化学特征[J]. 地球化学, 2009, 38(5): 472-479. https://www.cnki.com.cn/Article/CJFDTOTAL-DQHX200905007.htm WANG Baoquan, QIANG Zitong, ZHANG Fan, et al. Isotope characteristics of dolomite from the fifth member of the Ordovician Majiagou Formation, the Ordos Basin[J]. Geochimica, 2009, 38(5): 472-479. https://www.cnki.com.cn/Article/CJFDTOTAL-DQHX200905007.htm
[33]	MACHEL H G. Recrystallization versus neomorphism, and the concept of 'significant recrystallization' in dolomite research[J]. Sedimentary Geology, 1997, 113(3/4): 161-168.
[34]	MACHEL H G, MOUNTJOY E W. Chemistry and environments of dolomitization: a reappraisal[J]. Earth-Science Reviews, 1986, 23(3): 175-222.
[35]	赵卫卫, 王宝清. 鄂尔多斯盆地苏里格地区奥陶系马家沟组马五段白云岩的地球化学特征[J]. 地球学报, 2011, 32(6): 681-690. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201106007.htm ZHAO Weiwei, WANG Baoqing. Geochemical characteristics of dolomite from 5th member of the Ordovician Majiagou Formation in Sulige area, Ordos Basin[J]. Acta Geoscientia Sinica, 2011, 32(6): 681-690. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201106007.htm
[36]	吴兴宁, 吴东旭, 丁振纯, 等. 鄂尔多斯盆地西缘奥陶系白云岩地球化学特征及成因分析[J]. 海相油气地质, 2020, 25(4): 312-318. WU Xingning, WU Dongxu, DING Zhenchun, et al. Geochemical characteristics and genetic analysis of Ordovician dolomites in the western margin of Ordos Basin[J]. Marine Origin Petroleum Geology, 2020, 25(4): 312-318.
[37]	KEITH M L, WEBER J N. Carbon and oxygen isotopic composition of selected limestones and fossils[J]. Geochimica et Cosmochimica Acta, 1964, 28(10/11): 1787-1816.
[38]	包洪平, 张云峰, 王前平, 等. 鄂尔多斯盆地马五5亚段沉积微相分布及演化[J]. 煤田地质与勘探, 2016, 44(5): 16-21. https://www.cnki.com.cn/Article/CJFDTOTAL-MDKT201605003.htm BAO Hongping, ZHANG Yunfeng, WANG Qianping, et al. Distribution and evolution of sedimentary microfacies of submember 5 Majiagou Formation in the Ordos Basin[J]. Coal Geology & Exploration, 2016, 44(5): 16-21. https://www.cnki.com.cn/Article/CJFDTOTAL-MDKT201605003.htm
[39]	谢锦龙, 吴兴宁, 孙六一, 等. 鄂尔多斯盆地奥陶系马家沟组五段岩相古地理及有利区带预测[J]. 海相油气地质, 2013, 18(4): 23-32. https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ201304005.htm XIE Jinlong, WU Xingning, SUN Liuyi, et al. Lithofacies palaeogeo-graphy and potential zone prediction of Ordovician Majiagou member-5 in Ordos Basin[J]. Marine Origin Petroleum Geology, 2013, 18(4): 23-32. https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ201304005.htm