玛南地区风城组富有机质页岩成因机制——来自有机岩石学、生物标志物及同位素的证据

陈山河; 齐洪岩; 王伟; 王振林; 李杨虎; 汤富康; 郭守鑫; 傅正航

doi:10.12090/j.issn.1006-6616.2025146

玛南地区风城组富有机质页岩成因机制——来自有机岩石学、生物标志物及同位素的证据

doi: 10.12090/j.issn.1006-6616.2025146

陈山河^1,,
齐洪岩^{1, 2, ,},
王伟^{1, 2,},
王振林^1,,
李杨虎^1,,
汤富康^1,,
郭守鑫^2,,
傅正航^2,

1.
新疆油田公司勘探开发研究院，新疆克拉玛依 834000
2.
中国石油大学（北京）地球科学学院，北京 102249

基金项目: 国家科技重大专项（2025ZD1405001）；新疆天山英才计划青年拔尖人才项目（2022TSYCJC0027）

详细信息

作者简介:
陈山河（1996—），男，硕士，工程师，主要从事非常规资源评价与预测。 Email：csh@petrochina.com.cn

通讯作者:
齐洪岩（1983—），男，博士，高级工程师，主要从事非常规资源评价与预测。Email：qhy@petrochina.com.cn

中图分类号: P618.13
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- 被引次数: 0
出版历程
- 收稿日期: 2025-09-30
- 修回日期: 2025-12-05
- 录用日期: 2026-01-22
- 预出版日期: 2026-01-27
- 刊出日期: 2026-02-28

Genesis of organic-rich shales in the Fengcheng Formation, southern Mahu Sag: Evidence from organic petrology, biomarkers, and isotopes

CHEN Shanhe^1
,,
QI Hongyan^{1, 2
, ,},
WANG Wei^{1, 2
,},
WANG Zhenlin^1
,,
LI Yanghu^1
,,
TANG Fukang^1
,,
GUO Shouxin^2
,,
FU Zhenghang^2
,

1.
Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, Xinjiang, China
2.
School of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China

Funds: This research was financially supported by the National Science and Technology Major Project (Grant No. 2025ZD1405001) and the Tianshan Talents Program (Outstanding Young Talents Project)(Grant No. 2022TSYCJC0027).

摘要

摘要: 准噶尔盆地玛湖凹陷是区内重要的富烃凹陷，其二叠系风城组作为主力烃源岩层系，被广泛认为是页岩油勘探的关键“甜点”目标。相较于研究程度较高的玛湖凹陷中心及其北部斜坡区，西南部斜坡区（玛南）地区处于湖盆边缘相带，其烃源岩品质、有机质赋存状态及古环境演化特征具有特殊性，但目前相关成因机理认识尚不清晰。基于此，以玛南地区12口井33个泥页岩样品为研究对象，综合利用有机岩石学、有机地球化学与碳同位素分析等方法开展了系统测试，包括总有机碳（TOC）含量与总硫（TS）含量测定、岩石热解实验、镜质体反射率（R_o）测定、氯仿沥青“A”抽提、饱和烃与芳香烃气相色谱−质谱（GC-MS）分析以及全岩抽提物与族组分碳同位素组成测定，系统评价了其地球化学特征与成烃潜力。研究结果发现，玛南地区风城组烃源岩有机质丰度总体达到好—极好级别，但受陆源碎屑稀释及搬运影响，有机质类型以Ⅱ—Ⅲ型混合为主，与玛湖凹陷北部地区典型的Ⅰ—Ⅱ型有机质存在显著差异；样品整体处于成熟生油高峰阶段（R_o>0.8%），在详细探讨并剔除高成熟度对生烃母质参数（如姥植比、β-胡萝卜烷、扩展三环萜烷比值等）改造作用的基础上，多指标综合判识证实有机质主要来源于藻类、细菌等低等水生生物，陆源高等植物输入较为有限；沉积环境方面，该区主要形成于咸化湖盆边缘斜坡环境，受内源化学沉淀与外源陆源碎屑注入的双重控制，水体呈现弱还原、高盐度特征。研究明确了玛南地区风城组烃源岩作为湖盆边缘相咸化混积岩页岩油富集区的物质基础，揭示了其与凹陷中心及北部沉积环境的差异性，为拓展准噶尔盆地页岩油勘探空间提供了理论依据。
- 准噶尔盆地 /
- 玛南地区 /
- 风城组 /
- 烃源岩评价 /
- 生物标志物
Abstract: Objective The Mahu Sag, a pivotal, hydrocarbon-rich depression within the Junggar Basin, hosts the Permian Fengcheng Formation, a primary source rock interval widely regarded as a key “sweet spot” target for shale oil exploration. Unlike the well-studied depocenter and northern slope of the Mahu Sag, the Southern Mahu Sag represents a marginal lacustrine facies. Although possessing distinct source rock quality, organic matter (OM) occurrence, and paleo-environmental evolution, the underlying genetic mechanisms remain poorly constrained. Methods To address this, this study integrates organic petrology, molecular geochemistry, and stable carbon isotope analyses on 33 mudstone and shale samples from 12 wells in the Southern Mahu Sag. Systematic tests were conducted to comprehensively evaluate the geochemical characteristics and hydrocarbon generation potential. These included determination of the total organic carbon (TOC) and total sulfur (TS) content, Rock-Eval pyrolysis, measurement of vitrinite reflectance (R_o), chloroform bitumen “A” extraction, gas chromatography–mass spectrometry (GC–MS) of saturated and aromatic hydrocarbons, and analysis of the carbon isotope compositions of extracts and fractions. Results The results indicate that the OM abundance of the Fengcheng Formation source rocks in the Southern Mahu area generally reaches “good” to “excellent” levels. However, affected by the dilution of terrigenous detritus and transport effects, the OM is predominantly mixed Type II–III kerogen, contrasting significantly with the Type I–II OM typically found in the Northern Mahu area. The samples are generally within the peak oil-generation window (R_o>0.8%). Conclusions After rigorously assessing and calibrating the thermal maturity effects on source-related parameters (e.g., Pr/Ph, β-carotane, and ETR), multi-proxy analysis confirms that the OM mainly originates from lower aquatic organisms, such as algae and bacteria, with limited input from higher terrestrial plants. Regarding the depositional environment, the study area primarily evolved in a saline lacustrine slope setting, characterized by dual control of endogenous chemical precipitation and exogenous terrigenous detrital input. The water column exhibited weak reducing and high-salinity conditions. Significance This study (i) elucidates the material basis of the Fengcheng Formation source rocks as a “saline mixed sedimentary” shale oil enrichment zone in a marginal facies, (ii) reveals the depositional heterogeneity compared to the sag center and northern slope, and (iii) provides a theoretical foundation for expanding shale oil exploration in the Junggar Basin.
- Junggar Basin /
- Southern Mahu Sag /
- Fengcheng Formation /
- source rock evaluation /
- biomarker

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图 1 准噶尔盆地玛湖凹陷区域位置及构造单元与主要井位

a—准噶尔盆地玛湖凹陷区域位置图（曲彦胜等，2025）；b—玛湖凹陷构造单元及主要井位（底图据Dang et al.，2024修改）

Figure 1. Regional location, structural units, and major well locations of the Mahu Sag in the Junggar Basin

(a) Regional location map of the Mahu Sag, Junggar Basin (Qu et al., 2025); (b) Structural units and major well locations in the Mahu Sag (base map modified from Dang et al., 2024)

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图 2 准噶尔盆地玛湖凹陷及MH6井地层柱状图

a—准噶尔盆地玛湖凹陷综合地层柱状图（Dang et al.，2024）；b—MH6井地层柱状图

Figure 2. Composite stratigraphic column of the Mahu Sag and Well MH6 in the Junggar Basin

(a) Generalized stratigraphic column of the Mahu Sag, Junggar Basin (Dang et al., 2024); (b) Detailed stratigraphic column of Well MH 6

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图 3 准噶尔盆地玛南地区泥页岩显微组分特征

a—荧光下的惰质组； b—反射光下的惰质组（显示细胞结构，与图a同视域）； c—荧光下的镜质组； d—反射光下的镜质组（与图c同视域）；e—荧光下的结构藻类体（黄色荧光）；f—荧光下的结构藻类体；g—荧光下的层状藻类体；h—荧光下的层状藻类体

Figure 3. Characteristics of maceral compositions in mud shales from the shouthern Mahu Sag, Junggar Basin

(a) Inertinite under fluorescence; (b) Inertinite under reflected light (showing cellular structure, same field of view as Fig. 1a); (c) Vitrinite under fluorescence; (d) Vitrinite under reflected light (same field of view as Fig. 1c); (e) Telalginite under fluorescence (yellow fluorescence); (f) Telalginite under fluorescence; (g) Lamalginite under fluorescence; (h) Lamalginite under fluorescence

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图 4 代表性样品饱和烃组分部分质量色谱图分布特征

Figure 4. Distribution of partial mass chromatograms of the aliphatic fraction in representative samples

(a) Sample MN49; (b) Sample MN55

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图 5 代表性样品芳香烃组分部分质量色谱图分布特征

Figure 5. Distribution of partial mass chromatograms of the aromatic hydrocarbon fraction in representative samples

(a) Sample MN49; (b) Sample MN50

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图 6 准噶尔盆地玛南地区泥页岩有机质丰度与成熟度综合判识图版

a—TOC含量和S₁+S₂交汇图；b—TOC含量和氯仿沥青“A”交汇图；c—αααC₂₉甾烷20S/(20S + 20R)和C₂₉甾烷αββ/(αββ + ααα)交汇图；d—C₃₂藿烷22S/(22S+22R)和C₃₁藿烷22S/(22S+22R)交汇图；e—MPI-1与MNR交汇图（修改自Wang et al.，2021a）；f—F₁和F₂交汇图[F₁=（3-甲基菲+2-甲基菲）/（2-甲基菲+3-甲基菲+1-甲基菲+9-甲基菲）；F₂=2-甲基菲/（2-甲基菲+3-甲基菲+1-甲基菲+9-甲基菲）；Qiao et al.，2024]

Figure 6. Comprehensive identification chart for assessing organic abundance and maturity of mud shales from the southern Mahu Sag, Junggar Basin

(a) Cross plot of TOC content vs. S₁+S₂; (b) Cross plot of TOC content vs. chloroform bitumen 'A'; (c) Cross plot of ααα C₂₉ 20S/(20S + 20R) vs. C₂₉ ββ/(ββ + αα) steranes; (d) Cross plot of C₃₂ 22S/(22S+22R) vs. C₃₁ 22S/(22S+22R) hopane; (e) Cross plot of MPI-1 vs. MNR (modified after Wang et al., 2021a); (f) Cross plot of F₁ vs. F₂ [F₁= (3-MP + 2-MP) / (2-MP + 3-MP + 1-MP + 9-MP); F₂= 2-MP / (2-MP + 3-MP + 1-MP + 9-MP); MP = Methylphenanthrene; Qiao et al., 2024]

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图 7 准噶尔盆地玛南地区风城组泥页岩有机质特征判识图版

a—T_max与HI交汇图；b—TOC含量与S₂交汇图

Figure 7. Identification diagram for organic matter characteristics of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin

(a) Cross plot of T_max vs. hydrogen index; (b) Cross plot of TOC vs. S₂

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图 8 准噶尔盆地玛南地区风城组泥页岩ACL与Paq交汇图

Figure 8. Cross plot of ACL vs. Paq for mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin, China

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图 9 准噶尔盆地玛南地区风城组泥页岩三甲基萘交汇图

a—log(1,2,5-TMN/1,3,6-TMN)与Log(1,2,7-TMN/1,3,7-TMN)交汇图；b—log(1,2,5-TMN/1,3,6-TMN)与log(1-MP/9-MP)交汇图（Budzinski et al.，1995）

Figure 9. Cross-plots of trimethylnaphthalene ratios for mud shales from the Fengcheng Formation, southen Mahu Sag, Junggar Basin

(a) Cross plot of log (1,2,7-TMN/1,3,7-TMN) vs. log (1,2,5-TMN/1,3,6-TMN); (b) Cross plot of log (1,2,5-TMN/1,3,6-TMN) vs. log (1-MP/9-MP) (Budzinski et al., 1995)

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图 10 准噶尔盆地玛南地区风城组原油/抽提物族组分碳同位素组成判识图

a—烃源岩抽提物与组分碳同位素折线图；b—δ¹³C_饱和烃和δ¹³C_芳香烃交汇图

Figure 10. Identification diagram based on carbon isotopic composition of hydrocarbon fractions for crude oils/extracts from the Fengcheng Formation, southen Mahu Sag, Junggar Basin

(a) Line chart showing δ¹³C values of extracts and their fractions; (b) Cross plot of δ¹³C saturates vs. δ¹³C aromatics

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图 11 准噶尔盆地玛南地区风城组泥页岩与不同沉积环境三环萜烷指纹对比图

a—C₂₂/C₂₁三环萜烷与 C₂₄/C₂₃三环萜烷交汇图；b—C₂₆/C₂₅三环萜烷与 C₃₁R/C₃₀藿烷交汇图（据Peters et al.，2007修改）

Figure 11. Correlation of tricyclic terpane fingerprints between mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin, and those from different depositional environments

(a) Cross plot of C₂₂/C₂₁ vs. C₂₄/C₂₃ tricyclic terpane; (b) Cross plot of C₂₆/C₂₅ tricyclic terpane vs. C₃₁R/C₃₀ hopane (modified after Peters et al., 2007)

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图 12 准噶尔盆地玛南地区风城组C₂₇重排甾烷/（C₂₇重排甾烷+C₂₇规则甾烷）与C_21-22/ (C_21-22+C_27-29)甾烷交汇图

Figure 12. Cross plot of C₂₇ diasteranes / (diasteranes + regular steranes) vs. C_21–22/(C_21-22+C_27-29) steranes of mud shales, southern Mahu Sag, Junggar Basin, China

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图 13 准噶尔盆地玛南地区风城组泥页岩沉积环境与氧化还原条件判识图

a—准噶尔盆地风城组Ph/n-C₁₈与Pr/n-C₁₇交汇图；b—伽马蜡烷指数与Pr/ Ph交汇图

Figure 13. Identification of the depositional environment and redox conditions of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin

(a) Cross plot of Ph/n-C₁₈ vs. Pr/n-C₁₇; (b) Cross plot of gammacerane / C₃₀ hopane vs. Pr/Ph

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图 14 准噶尔盆地玛南地区风城组泥页岩沉积环境判识图

a—TOC含量与TS含量交汇图；b—ETR与伽马蜡烷/C₃₀藿烷交汇图

Figure 14. Identification of the depositional environment of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin

(a) Cross plot of TOC content vs. TS; (b) Cross plot of ETR vs. gammacerane / C₃₀ hopane

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图 15 准噶尔盆地玛南地区风城组泥页岩沉积古盐度判识图

a—芴（FL）、二苯并呋喃（DBF）和二苯并噻吩（DBT）相对含量三角图；b—二苯并噻吩/菲比值（DBT/P）与姥植比（Pr/Ph）交汇图（Hughes et al.，1995）

Figure 15. Identification of the paleosalinity of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin

(a) Relative concentrations of fluorene (FL), dibenzofuran (DBF), and dibenzothiophene (DBT); (b) Cross plot of dibenzothiophene / phenanthrene vs. Pr/Ph (Hughes et al., 1995)

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图 16 准噶尔盆地玛南地区风城组泥页岩Pr/Ph与MTTC比值交汇关系

Figure 16. Cross plot of Pr/Ph vs. the MTTC ratio of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin

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表 1 玛南地区泥页岩总有机碳（TOC）含量、总硫（TS）含量及岩石热解测试结果

Table 1. Measured results of total organic carbon (TOC) content, total sulfur (TS) content, and Rock–Eval pyrolysis for mud shales from the Southern Mahu Sag

样品编号	井号	深度/m	TOC/%	TS /%	R_o /%	T_max/℃	S₁ /(mg/g)	S₂/ (mg/g)	S₃/ (mg /g)	HI/ (mg/g)	OI/ (mg/g)	(S₁+S₂)/TOC	S₂/S₃
MN49	MH2	5135.3	1.41	0.20	1.08	440	0.43	1.39	1.24	98	88	1.29	1.12
MN50	MH2	5138.3	1.43	0.70	1.11	440	0.34	1.36	1.33	95	93	1.19	1.02
MN84	MH6	5262.5	0.81	0.19	1.12	442	0.21	0.56	0.73	69	90	0.95	0.77
MN90	MH7	4628.3	0.81	0.10	0.98	431	0.75	1.19	0.71	146	87	2.38	1.68
MN92	MH7	4625.7	1.17	0.37	0.96	424	2.21	2.68	0.9	229	77	4.19	2.98
MN8	MH9	4495.6	2.13	1.76	0.95	437	0.58	9.51	0.68	447	32	4.74	13.99
MN9	MH9	4500.1	2.61	1.31	0.97	439	5.82	10.79	0.75	413	29	6.36	14.39
MN12	MH9	4531.8	2.41	0.41	1.02	439	2.47	8.58	0.68	357	28	4.59	12.62
MN13	MH9	4538.9	1.40	0.25	1.03	442	0.24	2.71	0.68	194	49	2.11	3.99
MN14	MH9	4543.8	1.38	0.04	1.04	446	1.09	3.83	1.11	278	81	3.57	3.45
MN131	MH9	4570.0	2.13	0.77	1.08	438	1.02	6.34	1.08	298	51	3.46	5.87
MN19	MH9	4578.7	1.48	1.78	1.04	442	0.95	3.84	1.37	259	92	3.23	2.80
MN25	MH12	5043.0	1.63	0.93	0.87	442	0.45	1.71	1.11	105	68	1.33	1.54
MN26	MH12	5044.0	1.70	0.85	0.87	446	0.61	3.17	1.17	186	69	2.22	2.71
MN29	MH15	4853.5	1.84	1.59	0.86	429	2.65	3.16	1.41	172	77	3.16	2.24
MN32	MH15	4863.7	1.29	1.68	0.80	425	0.92	2.11	1.74	164	135	2.35	1.21
MN35	MH15	4880.4	1.30	1.70	0.86	422	0.97	1.58	1.34	122	103	1.97	1.18
MN37	MH15	4947.7	1.35	1.04	0.96	449	0.76	1.37	1.19	102	88	1.58	1.15
MN42	MH16	4305.5	1.56	0.07	0.88	440	0.33	3.30	1.42	211	91	2.32	2.32
MN53	MH20	5306.1	1.20	0.82	1.15	413	0.35	0.75	2.98	62	248	0.92	0.25
MN54	MH23	5007.5	0.90	1.60	1.04	443	0.33	1.04	1.34	116	150	1.53	0.78
MN55	MH23	5008.5	1.71	1.00	1.04	443	1.01	3.88	0.93	228	55	2.87	4.17
MN63	MH24	4858.3	1.23	1.28	1.13	423	1.14	1.64	1.91	133	155	2.26	0.86
MN64	MH26	4245.3	2.40	0.05	0.80	443	0.50	8.89	0.97	370	40	3.91	9.16
MN68	MH26	4266.0	2.23	0.78	1.00	435	0.12	9.26	1.04	415	47	4.20	8.90
MN70	MH26	4269.3	1.86	0.06	0.97	441	0.91	3.98	1.29	214	69	2.63	3.09
MN71	MH26	4319.7	2.64	1.06	0.90	441	1.17	9.52	1.17	361	44	4.06	8.14
MN72	MH26	4323.5	1.61	1.57	1.01	428	1.00	5.16	0.73	321	45	3.83	7.07
MN85	MH27	4838.3	0.80	1.57	0.87	423	0.51	1.12	1.09	139	136	2.03	1.03
MN88	MH27	4933.3	1.19	1.37	0.93	430	0.75	2.78	0.68	234	57	2.97	4.09
MN89	MH27	4937.0	1.86	2.04	0.96	431	0.13	6.07	0.59	326	32	3.33	10.29
MN95	MH29	4847.9	1.10	1.43	1.01	416	0.59	1.2	1.26	109	115	1.63	0.95
MN97	MH29	4852.8	1.03	1.68	1.01	429	0.24	1.65	1.21	161	118	1.84	1.36
R_o—镜质体反射率；T_max—S₂峰顶对应的温度，干酪根在加热过程中最大裂解生成烃类时的温度；S₁—游离烃含量；S₂—热解烃含量；S₃—有机二氧化碳含量；HI—氢指数，反应有机质H/C原子比；OI—氧指数，反应有机质O/C原子比

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表 2 玛南地区泥页岩正构烷烃生物标志物参数

Table 2. Biomarker parameters of alkane hydrocarbon for mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin, China

样品编号	井号	深度/m	Pr/Ph	Pr/n-C₁₇	Ph/n-C₁₈	CPI_12-20	CPI_24-34	n-C₁₇/（n-C₂₃+n-C₂₅+n-C₂₇）	TAR	Paq	β-胡萝卜烷/n-C_max	ACL
MN49	MH2	5135.3	1.25	1.18	1.23	1.08	0.99	0.64	0.33	0.71	1.95	26.36
MN50	MH2	5138.3	1.30	1.10	1.20	1.10	1.02	0.57	0.34	0.72	1.32	26.34
MN84	MH6	5262.5	0.77	1.01	0.93	1.06	1.05	0.74	0.24	0.76	0.05	26.07
MN90	MH7	4628.3	0.97	1.43	1.37	1.08	1.03	0.25	0.67	0.79	1.78	26.08
MN92	MH7	4625.7	0.84	1.22	1.30	1.07	1.09	0.20	0.91	0.73	2.06	26.28
MN8	MH9	4495.6	0.95	1.57	1.22	1.10	1.13	0.55	0.38	0.74	5.10	26.07
MN9	MH9	4500.1	0.83	2.63	1.95	1.16	1.25	0.33	0.60	0.71	8.95	26.38
MN12	MH9	4531.8	0.87	2.09	1.60	1.13	1.15	0.36	0.75	0.65	6.81	26.70
MN13	MH9	4538.9	0.93	0.87	0.73	1.07	1.13	0.32	0.92	0.59	9.66	27.04
MN14	MH9	4543.8	0.81	0.70	0.59	1.07	1.13	0.32	0.92	0.59	5.36	27.04
MN131	MH9	4570.0	0.77	1.19	0.89	1.07	1.13	0.32	0.92	0.59	3.20	27.04
MN19	MH9	4578.7	0.67	1.01	0.68	1.14	0.92	0.45	0.35	0.77	2.71	26.05
MN25	MH12	5043.0	1.02	1.17	0.97	1.14	0.92	0.45	0.35	0.77	2.38	26.05
MN26	MH12	5044.0	1.03	1.15	1.01	1.08	1.16	0.70	0.33	0.66	5.34	26.58
MN29	MH15	4853.5	0.51	1.61	0.93	1.08	1.16	0.70	0.33	0.66	5.33	26.58
MN32	MH15	4863.7	0.87	1.01	0.87	1.02	1.05	0.39	0.48	0.76	2.18	26.02
MN35	MH15	4880.4	0.75	1.14	0.87	1.04	1.05	0.38	0.53	0.74	1.79	26.15
MN37	MH15	4947.7	1.50	0.99	1.35	1.08	1.12	0.35	0.81	0.61	0.92	26.78
MN42	MH16	4305.5	1.62	0.83	1.23	1.07	1.14	0.51	0.37	0.74	0.82	26.16
MN53	MH20	5306.1	1.08	1.38	1.20	1.08	0.96	0.94	0.16	0.78	0.50	25.92
MN54	MH23	5007.5	1.06	2.62	2.26	1.07	1.13	0.48	0.60	0.64	0.53	26.72
MN55	MH23	5008.5	1.11	0.90	1.00	1.02	1.08	0.38	0.54	0.72	1.99	26.25
MN63	MH24	4858.3	0.72	2.01	1.49	1.05	1.05	0.38	0.55	0.74	1.47	26.27
MN64	MH26	4245.3	1.30	1.03	1.16	1.08	1.09	0.32	0.61	0.74	0.10	26.22
MN68	MH26	4266.0	0.94	1.66	1.28	1.11	1.20	0.89	0.36	0.62	4.09	26.84
MN70	MH26	4269.3	1.23	3.86	3.25	1.23	1.26	0.65	0.31	0.76	0.82	26.09
MN71	MH26	4319.7	1.14	0.95	1.13	1.01	1.08	0.31	0.47	0.79	0.88	25.78
MN72	MH26	4323.5	1.02	1.82	1.84	1.06	1.17	0.38	0.65	0.66	11.14	26.52
MN85	MH27	4838.3	0.77	1.01	0.93	1.05	1.08	0.75	0.22	0.79	1.79	25.98
MN88	MH27	4933.3	0.57	0.45	0.34	1.00	1.01	0.25	0.70	0.74	0.69	26.25
MN89	MH27	4937.0	1.00	0.76	0.53	1.09	1.10	2.36	0.09	0.74	0.09	26.29
MN95	MH29	4847.9	0.86	1.77	1.37	1.07	1.09	0.42	0.53	0.70	2.89	26.46
MN97	MH29	4852.8	0.98	1.25	1.10	1.04	1.02	0.47	0.43	0.72	2.67	26.33
CPI_12-20—短链正构烷烃的碳优势指数；CPI_21-34—中长链正构烷烃的碳优势指数；TAR—陆源高等植物/水生藻类或浮游生物比值；Paq—沉水/浮叶大型植物含量比；ACL—正构烷烃平均链长

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表 3 玛南地区泥页岩萜烷、藿烷和甾烷生物标志物参数

Table 3. Biomarker parameters of terpanes, hopanes, and steranes for mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin, China

样品编号	井号	深度/m	C₁₉TT/ (C₁₉TT+ C₂₃TT)	C₂₂TT/ C₂₁TT	C₂₄TT/ C₂₃TT	C₂₆TT/ C₂₅TT	C₂₄Tet/ C₂₃TT	C₂₄Tet/ C₂₆TT	ETR	伽马蜡烷/ C₃₀藿烷	C₃₁藿烷 S/(S+R)	C_21-22/ (C_21-22+C_27-29) 甾烷	C₂₇重排甾烷/规则甾烷	C₂₉甾烷αββ/ （αββ+ααα）	αααC₂₉ 甾烷20S/ (20S+20R)	C₂₇/%	C₂₈/%	C₂₉/%
MN49	MH2	5135.3	0.19	0.18	0.50	1.33	0.15	0.28	7.24	1.34	0.66	0.09	0.34	0.54	0.49	13	42	46
MN50	MH2	5138.3	0.40	0.22	0.53	1.21	0.08	0.15	5.50	0.82	0.20	0.08	0.40	0.55	0.51	11	42	47
MN84	MH6	5262.5	0.33	0.20	0.49	1.26	0.18	0.40	6.32	0.20	0.41	0.16	0.21	0.56	0.52	13	49	38
MN90	MH7	4628.3	0.12	0.20	0.50	1.22	0.33	0.63	20.19	0.20	0.50	0.04	0.26	0.55	0.48	9	41	50
MN92	MH7	4625.7	0.09	0.21	0.50	1.13	0.27	0.54	20.74	0.18	0.51	0.05	0.28	0.55	0.49	10	42	48
MN8	MH9	4495.6	0.17	0.17	0.48	1.21	0.46	0.85	4.04	0.10	0.57	0.07	0.19	0.42	0.45	13	37	50
MN9	MH9	4500.1	0.16	0.22	0.46	1.24	0.61	0.98	14.63	0.27	0.56	0.05	0.23	0.41	0.47	22	34	44
MN12	MH9	4531.8	0.11	0.19	0.50	1.50	0.36	0.57	7.81	0.15	0.54	0.04	0.27	0.46	0.47	9	39	52
MN13	MH9	4538.9	0.14	0.17	0.48	1.44	0.47	0.67	7.29	0.07	0.54	0.06	0.19	0.44	0.46	17	37	46
MN14	MH9	4543.8	0.14	0.20	0.51	1.39	0.46	0.72	6.89	0.10	0.54	0.04	0.22	0.48	0.47	12	39	48
MN131	MH9	4570.0	0.15	0.25	0.46	1.03	0.47	0.94	5.85	0.18	0.55	0.05	0.25	0.50	0.47	8	40	52
MN19	MH9	4578.7	0.13	0.26	0.42	1.01	0.23	0.50	14.20	0.18	0.47	0.06	0.32	0.55	0.50	10	43	47
MN25	MH12	5043.0	0.13	0.19	0.60	1.25	0.17	0.28	4.58	0.38	0.48	0.11	0.29	0.55	0.49	17	34	49
MN26	MH12	5044.0	0.09	0.20	0.64	1.31	0.17	0.28	4.29	0.37	0.46	0.10	0.30	0.54	0.52	17	34	49
MN29	MH15	4853.5	0.12	0.25	0.48	1.04	0.35	0.62	16.04	0.21	0.50	0.05	0.23	0.54	0.49	11	43	46
MN32	MH15	4863.7	0.10	0.20	0.44	0.96	0.26	0.62	18.16	0.19	0.51	0.05	0.36	0.55	0.48	12	41	47
MN35	MH15	4880.4	0.10	0.21	0.43	1.06	0.26	0.59	23.54	0.22	0.49	0.04	0.20	0.56	0.49	12	42	47
MN37	MH15	4947.7	0.22	0.21	0.41	1.08	0.47	1.10	1.37	0.21	0.54	0.05	0.39	0.54	0.51	13	34	53
MN42	MH16	4305.5	0.10	0.16	0.46	1.19	0.38	0.76	1.72	0.08	0.56	0.05	0.18	0.43	0.40	12	36	52
MN53	MH20	5306.1	0.39	0.22	0.53	1.27	0.09	0.18	12.93	0.63	0.14	0.12	0.25	0.55	0.50	10	43	47
MN54	MH23	5007.5	0.33	0.22	0.46	1.27	2.18	3.65	1.12	0.43	0.56	0.02	0.34	0.54	0.48	7	35	58
MN55	MH23	5008.5	0.14	0.21	0.49	1.39	0.34	0.57	5.05	0.11	0.52	0.06	0.37	0.53	0.48	18	37	44
MN63	MH24	4858.3	0.16	0.20	0.51	1.11	0.17	0.35	10.07	0.53	0.26	0.07	0.36	0.56	0.49	9	40	51
MN64	MH26	4245.3	0.25	0.20	0.44	1.21	1.11	2.45	2.30	0.17	0.57	0.03	0.37	0.39	0.45	5	39	56
MN68	MH26	4266.0	0.15	0.18	0.45	1.23	0.33	0.75	12.30	0.19	0.53	0.06	0.31	0.39	0.46	9	40	51
MN70	MH26	4269.3	0.31	0.27	0.47	1.07	1.35	3.13	0.64	0.20	0.57	0.03	0.37	0.46	0.47	5	33	61
MN71	MH26	4319.7	0.10	0.18	0.42	1.07	0.32	0.66	0.74	0.08	0.56	0.03	0.26	0.46	0.46	6	33	61
MN72	MH26	4323.5	0.11	0.21	0.50	1.26	0.31	0.57	0.88	0.07	0.56	0.04	0.33	0.39	0.46	11	47	42
MN85	MH27	4838.3	0.17	0.21	0.53	1.21	0.32	0.59	0.95	0.30	0.51	0.05	0.30	0.55	0.49	9	40	51
MN88	MH27	4933.3	0.09	0.26	0.56	1.02	0.25	0.46	0.84	0.14	0.49	0.04	0.24	0.55	0.49	16	39	45
MN89	MH27	4937.0	0.26	0.16	0.41	0.92	0.17	0.57	0.89	0.30	0.44	0.22	0.34	0.53	0.50	10	45	44
MN95	MH29	4847.9	0.11	0.19	0.50	1.02	0.18	0.39	0.96	0.29	0.40	0.05	0.31	0.56	0.49	9	42	49
MN97	MH29	4852.8	0.14	0.18	0.53	0.99	0.12	0.25	0.97	0.24	0.37	0.08	0.31	0.56	0.50	9	43	48
TT—三环萜烷；Tet—四环萜烷；ETR—扩展三环萜烷比值

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表 4 玛南地区泥页岩芳香烃生物标志物参数与碳同位素测试结果

Table 4. Biomarker parameters of aromatics and δ¹³C values of mud shales from the Fengcheng Formation, southern Mahu Sag, Junggar Basin, China

样品编号	井号	深度/m	HPI	HPP	log（1,2,7-三甲基萘/1,3,7-三甲基萘）	log（1,2,5-三甲基萘/1,3,6-三甲基萘）	log （1-甲基菲/ 9-甲基菲）	log (惹烯/ 9-甲基菲）	DBT/ PHE	1,3,6,7四甲基萘/1,3,5,7 四甲基萘	VR_MPI-1	抽提物 δ¹³C/‰	饱和烃 δ¹³C /‰	芳烃 δ¹³C /‰	非烃 δ¹³C /‰	沥青质 δ¹³C /‰
MN49	MH2	5135.3	0.10	0.45	−0.21	−1.28	−0.09	−1.81	0.01	2.18	1.32	−27.2	−27.8	−26.2	−26.5	−25.2
MN50	MH2	5138.3	0.13	0.22	−0.22	−1.28	−0.09	−2.00	0.01	2.10	1.31	−27.2	−27.6	−25.6	−26.4	−25.4
MN84	MH6	5262.5	0.57	0.17	−0.21	−1.13	−0.04	−1.89	0.01	2.01	1.27	−29.0	−29.7	−27.7	−27.3	−24.2
MN90	MH7	4628.3	0.07	0.50	−0.28	−1.38	−0.06	−1.68	0.01	1.99	1.21	−28.9	−29.3	−27.5	−27.1	−25.2
MN92	MH7	4625.7	0.09	0.65	−0.19	−1.25	−0.06	−1.58	0.03	2.12	1.21	−29.2	−29.2	−27.6	−27.2	−27.3
MN8	MH9	4495.6	0.05	0.58	−0.28	−1.13	−0.01	−1.51	0.01	1.69	1.21	−26.5	−28.0	−26.7	−26.2	−25.8
MN9	MH9	4500.1	0.07	0.52	−0.27	−1.16	−0.02	−1.52	0.01	1.59	1.16	−28.7	−29.4	−27.8	−27.0	−26.8
MN12	MH9	4531.8	0.03	0.26	−0.29	−1.16	−0.02	−2.02	0.01	1.53	1.17	−28.0	−28.7	−27.6	−27.5	−26.8
MN13	MH9	4538.9	0.06	0.35	−0.35	−1.13	−0.07	−2.01	0.01	1.62	1.01	−27.7	−28.4	−27.3	−27.1	−26.8
MN14	MH9	4543.8	0.08	0.66	−0.27	−1.03	−0.06	−1.55	0.01	1.60	0.97	−27.4	−28.0	−26.4	−27.2	−25.8
MN131	MH9	4570.0	0.10	0.65	−0.26	−1.18	−0.08	−1.53	0.01	1.64	1.07	−28.2	−28.9	−27.5	−27.3	−27.4
MN19	MH9	4578.7	0.10	0.54	−0.24	−1.26	−0.08	−1.71	0.00	1.79	1.03	−28.7	−29.1	−28.1	−28.1	−27.0
MN25	MH12	5043.0	0.09	0.53	−0.26	−1.44	−0.05	−1.62	0.01	1.95	1.23	−28.0	−29.1	−27.8	−27.0	−25.7
MN26	MH12	5044.0	0.04	0.39	−0.27	−1.48	−0.05	−2.08	0.01	1.95	1.26	−28.2	−28.8	−27.7	−27.5	−27.3
MN29	MH15	4853.5	0.09	0.31	−0.23	−1.24	−0.08	−1.98	0.01	1.81	1.14	−29.3	−29.6	−28.5	−28.6	−28.9
MN32	MH15	4863.7	0.08	0.26	−0.23	−1.26	−0.08	−2.23	0.01	1.85	1.06	−29.0	−29.3	−28.1	−28.0	−26.6
MN35	MH15	4880.4	0.10	0.19	−0.23	−1.26	−0.07	−2.20	0.00	1.83	1.08	−29.5	−30.1	−28.7	−28.8	−27.5
MN37	MH15	4947.7	0.08	0.22	−0.17	−1.08	−0.07	−2.25	0.00	1.85	1.02	−28.6	−29.0	−28.0	−27.8	−26.6
MN42	MH16	4305.5	0.37	0.21	−0.07	−0.86	−0.09	−1.44	0.02	1.61	0.93	−28.0	−28.7	−27.9	−27.9	−27.8
MN53	MH20	5306.1	0.14	0.23	−0.08	−1.00	−0.01	−2.11	0.01	1.79	1.40	−27.6	−27.6	−27.1	−27.1	−27.0
MN54	MH23	5007.5	1.95	0.02	−0.20	−1.15	−0.03	−2.04	0.01	1.71	1.07	−28.2	−29.0	−27.0	−27.4	−26.4
MN55	MH23	5008.5	0.06	0.28	−0.14	−1.13	−0.08	−2.13	0.00	1.83	1.01	−27.1	−27.3	−26.6	−26.7	−26.1
MN63	MH24	4858.3	0.08	0.25	−0.15	−1.09	−0.11	−2.21	0.01	2.02	1.24	−28.3	−28.5	−27.7	−27.7	−26.8
MN64	MH26	4245.3	1.28	0.02	−0.24	−0.66	−0.15	−2.06	0.02	1.63	0.91	−28.2	−29.2	−27.4	−27.6	−26.3
MN68	MH26	4266.0	—	—	—	—	—	—	—	—	—	−27.5	−28.2	−27.3	−26.9	−26.3
MN70	MH26	4269.3	0.07	0.09	−0.09	−0.44	−0.11	−2.50	0.04	1.62	0.92	−27.6	−28.5	−27.1	−27.4	−27.1
MN71	MH26	4319.7	0.10	0.32	−0.22	−0.94	−0.05	−1.92	0.01	1.46	0.90	−27.3	−27.9	−26.8	−26.6	−25.3
MN72	MH26	4323.5	0.08	0.29	−0.30	−1.03	−0.05	−1.89	0.02	1.47	1.03	−27.8	−28.0	−27.4	−27.2	−25.6
MN85	MH27	4838.3	0.66	0.02	−0.28	−1.37	−0.05	−2.15	0.01	2.12	1.43	−28.2	−28.0	−27.3	−27.0	−25.3
MN88	MH27	4933.3	0.08	0.38	−0.22	−1.14	−0.12	−2.08	0.00	1.86	0.97	−28.8	−28.8	−27.8	−27.8	−27.3
MN89	MH27	4937.0	0.16	0.11	−0.34	−1.30	−0.07	−2.40	0.01	1.91	1.12	−28.3	−29.0	−27.6	−27.6	−26.8
MN95	MH29	4847.9	0.19	0.05	−0.26	−1.27	−0.11	−2.35	0.01	1.93	1.15	−28.4	−28.9	−27.5	−27.4	−26.4
MN97	MH29	4852.8	0.07	0.27	−0.24	−1.22	−0.09	−2.25	0.01	2.06	1.29	−28.1	−28.0	−27.3	−28.3	−26.9
HPI—高等植物指数；HPP—高等植物参数；DBT/PHE—二苯并噻吩/菲；VR_MPI-1—甲基菲指数-1等效镜质体反射率

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