火山活动对鄂尔多斯盆地三叠系长7段淡水湖盆富营养化与沉积水体介质环境的影响

doi:10.11743/ogg20230407

Abstract

Abstract:

Large-scale organic-rich shales are usually formed in saline basins rather than freshwater basins. However， the Ordos Basin， as a typical freshwater lacustrine basin， has a maximum total organic carbon content （TOC） of 30 % in its Triassic Chang 7 Member shale， way above the average TOC content of shales in saline basins， leaving the main controlling factors a hot topic for discussion. The multiple tuff layers occurred frequently in high TOC sections of the member indicate intense volcanic events and a subtle connection between the events and the high TOC value. Analysis of main and trace elements of the shale confirms the impact of volcanic events as indicated by the relatively higher content of elements enriched in clay minerals like Al and K， of elements as proxy of paleo-productivity and reducing environment including Ni， Cr and V， as well as of high field strength elements （Zr， Th， and Hf）. The upper parts of these tuff are even richer in organic matter with increasing hydrocarbon generation intensity that indicates the elevated paleoproductivity. There are trends of Fe_HR/Fe_T ≥ 0.38 and Fe_py/Fe_HR ≤ 0.8 in organic-rich shale but with Fe_py/Fe_HR up to 0.8 with the increase of TOC. The （EF_Mo/EF_U）（auth） ratios is 1-3 when the TOC is greater than 6 %. Both the iron speciation and （EF_Mo/EF_U）（auth） ratios indicate that there was an euxinic environment for Mo and Fepy enrichment， but the sulfate reduction strength was low （SRI ≤ 1.375）. In summary， the input of volcanic materials and inorganic elements into the freshwater increased paleoproductivity and promoted the formation of a reducing environment. This is favorable for the organic-rich matter accumulation and preservation. The upper shales of the tuff-bearing section are suggested to be one of the key targets for future exploration and development in the basin.

Key words: eutrophication, reducing environment, volcanism, organic-rich shale, Chang 7 Member, Ordos Basin

CLC Number:

TE121.3

Jiahong GAO, Zhijun JIN, Xinping LIANG, Shixiang LI, Weiwei YANG, Rukai ZHU, Xiaoyu DU, Quanyou LIU, Tong LI, Lin DONG, Peng LI, Wang ZHANG. The impact of volcanism on eutrophication and water column in a freshwater lacustrine basin： A case study of Triassic Chang 7 Member in Ordos Basin[J]. Oil & Gas Geology, 2023, 44(4): 887-898.

Figures/Tables 9

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References 56

1	POWELL T G. Petroleum geochemistry and depositional setting of lacustrine source rocks［J］. Marine and Petroleum Geology， 1986， 3（3）： 200-219.
2	GRANT W D， TIINDALL B J. The alkaline， saline environment［C］//HERBERT R A， CODD G A. Microbes in Extreme Environments， Dundee， 1984. London： Academic Press， 1986：22-54.
3	GRANT W D. Introductory chapter： Half a lifetime in soda lakes［M］//VENTOSA A. Halophilic Microorganisms. Berlin： Springer， 2004： 17-31.
4	袁伟，柳广弟，徐黎明，等. 鄂尔多斯盆地延长组7段有机质富集主控因素［J］. 石油与天然气地质， 2019， 40（2）： 326-334.
	YUAN Wei， LIU Guangdi， XU Liming， et al. Main controlling factors for organic matter enrichment in Chang 7 member of the Yanchang Formation， Ordos Basin［J］. Oil & Gas Geology， 2019， 40（2）： 326-334.
5	刘池洋，王建强，张东东，等. 鄂尔多斯盆地油气资源丰富的成因与赋存-成藏特点［J］. 石油与天然气地质， 2021， 42（5）： 1011-1029.
	LIU Chiyang， WANG Jianqiang， ZHANG Dongdong， et al. Genesis of rich hydrocarbon resources and their occurrence and accumulation characteristics in the Ordos Basin［J］. Oil & Gas Geology， 2021， 42（5）： 1011-1029.
6	范柏江，晋月，师良，等. 鄂尔多斯盆地中部三叠系延长组7段湖相页岩油勘探潜力［J］. 石油与天然气地质， 2021， 42（5）： 1078-1088.
	FAN Bojiang， JIN Yue， SHI Liang， et al.Shale oil exploration potential in central Ordos Basin： A case study of Chang 7 lacustrine shale［J］. Oil & Gas Geology， 2021， 42（5）： 1078-1088.
7	张亚雄. 鄂尔多斯盆地中部地区三叠系延长组7段暗色泥岩烃源岩特征［J］. 石油与天然气地质， 2021， 42（5）： 1089-1097.
	ZHANG Yaxiong. Source rock characterization： The dark mudstone in Chang 7 Member of Triassic，central Ordos Basin［J］. Oil & Gas Geology， 2021， 42（5）： 1089-1097.
8	付锁堂，姚泾利，李士祥，等.鄂尔多斯盆地中生界延长组陆相页岩油富集特征与资源潜力［J］.石油实验地质，2020，42（5）：698-710.
	FU Suotang， YAO Jingli， LI Shixiang，et al.Enrichment characteristics and resource potential of continental shale oil in Mesozoic Yanchang Formation， Ordos Basin［J］.Petroleum Geology & Experiment，2020，42（5）：698-710.
9	张文正，杨华，杨奕华，等. 鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境［J］. 地球化学， 2008， 37（1）： 59-64.
	ZHANG Wenzheng， YANG Hua， YANG Yihua， et al. Petrology and element geochemistry and development environment of Yanchang Formation Chang-7 high quality source rocks in Ordos Basin［J］. Geochimica， 2008， 37（1）： 59-64.
10	杨华，张文正. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用：地质地球化学特征［J］. 地球化学， 2005， 34（2）： 147-154.
	YANG Hua， ZHANG Wenzheng. Leading effect of the Seventh Member high-quality source rock of Yanchang Formation in Ordos Basin during the enrichment of low-penetrating oil-gas accumulation： Geology and geochemistry［J］. Geochimica， 2005， 34（2）： 147-154.
11	CANFIELD D E， RAISWELL R， WESTRICH J T， et al. The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales［J］. Chemical Geology， 1986， 54（1/2）： 149-155.
12	POULTON S W， CANFIELD D E. Development of a sequential extraction procedure for iron： Implications for iron partitioning in continentally derived particulates［J］. Chemical Geology， 2005， 214（3/4）： 209-221.
13	ZHANG Wenzheng， YANG Weiwei， XIE Liqin. Corrigendum to “Controls on organic matter accumulation in the Triassic Chang 7 lacustrine shale of the Ordos Basin， central China” ［Int. J. Coal Geol. 183 （2017） 38-51］［J］. International Journal of Coal Geology， 2018， 191： 157.
14	张文正，杨华，彭平安，等. 晚三叠世火山活动对鄂尔多斯盆地长7优质烃源岩发育的影响［J］. 地球化学， 2009， 38（6）： 573-582.
	ZHANG Wenzheng， YANG Hua， PENG Ping’an， et al. The influence of late Triassic volcanism on the development of Chang 7 high grade hydrocarbon source rock in Ordos Basin［J］. Geochimica， 2009， 38（6）： 573-582.
15	邱欣卫，刘池洋，毛光周，等. 鄂尔多斯盆地延长组火山灰沉积物岩石地球化学特征［J］. 地球科学（中国地质大学学报）， 2011， 36（1）： 139-150.
	QIU Xinwei， LIU Chiyang， MAO Guangzhou， et al. Petrological-geochemical characteristics of volcanic ash sediments in Yanchang Formation in Ordos Basin［J］. Earth Science（Journal of China University of Geosciences）， 2011， 36（1）： 139-150.
16	李庆，卢浩，吴胜和，等. 鄂尔多斯盆地南部三叠系长73亚段凝灰岩沉积成因及储层特征［J］. 石油与天然气地质， 2022， 43（5）： 1141-1154.
	LI Qing， LU Hao， WU Shenghe， et al. Sedimentary origins and reservoir characteristics of the Triassic Chang 73 tuffs in the southern Ordos Basin［J］. Oil & Gas Geology， 2022， 43（5）： 1141-1154.
17	WEDEPOHL K H. Environmental influences on the chemical composition of shales and clays［J］. Physics and Chemistry of the Earth， 1971， 8： 307-333.
18	PARVIAINEN A， LOUKOLA-RUSKEENIEMI K. Environmental impact of mineralised black shales［J］. Earth-Science Reviews， 2019， 192： 65-90.
19	ZOU Caineng， ZHU Rukai， CHEN Zhongqiang， et al. Organic-matter-rich shales of China［J］. Earth-Science Reviews， 2019， 189： 51-78.
20	KOLATA D R， HUFF W D， BERGSTRÖM S M. Ordovician K-bentonites of eastern North America［M］. Boulder： Geological Society of America， 1996： 1-84.
21	HUFF W D， BERGSTRÖM S M， KOLATA D R， et al. The Lower Silurian Osmundsberg K-bentonite. Part II： Mineralogy， geochemistry， chemostratigraphy and tectonomagmatic significance［J］. Geological Magazine， 1998， 135（1）： 15-26.
22	SELL B K， SAMSON S D. Apatite phenocryst compositions demonstrate a miscorrelation between the Millbrig and Kinnekulle K-bentonites of North America and Scandinavia［J］. Geology， 2011， 39（4）： 303-306.
23	DAI Shifeng， WARD C R， GRAHAM I T， et al. Altered volcanic ashes in coal and coal-bearing sequences： A review of their nature and significance［J］. Earth-Science Reviews， 2017， 175： 44-74.
24	YANG Shengchao， HU Wenxuan， WANG Xiaolin， et al. Duration， evolution， and implications of volcanic activity across the Ordovician-Silurian transition in the Lower Yangtze region， South China［J］. Earth and Planetary Science Letters， 2019， 518： 13-25.
25	KOEHLER M C， STÜEKEN E E， HILLIER S， et al. Limitation of fixed nitrogen and deepening of the carbonate-compensation depth through the Hirnantian at Dob’ s Linn， Scotland［J］. Palaeogeography， Palaeoclimatology， Palaeoecology， 2019， 534： 109321.
26	张瑞. 鄂尔多斯盆地中生代波动沉积响应及对烃源岩的控制［D］. 青岛：中国石油大学（华东）， 2020.
	ZHANG Rui. Sedimentary response to the Mesozoic Ordos Basin’s wave rhythms and its implications for source rocks［D］. Qingdao： China University of Petroleum（East China）， 2020.
27	李森，朱如凯，崔景伟，等. 鄂尔多斯盆地长7段细粒沉积岩特征与古环境——以铜川地区瑶页1井为例［J］. 沉积学报， 2020， 38（3）： 554-570.
	LI Sen， ZHU Rukai， CUI Jingwei， et al. Sedimentary characteristics of fine-grained sedimentary rock and paleo-environment of Chang 7 member in the Ordos Basin： A case study from Well Yaoye 1 in Tongchuan［J］. Acta Sedimentologica Sinica， 2020， 38（3）： 554-570.
28	DELANO J W， TICE S J， MITCHELL C E， et al. Rhyolitic glass in Ordovician K-bentonites： A new stratigraphic tool［J］. Geology， 1994， 22（2）： 115-118.
29	MITCHELL C E， GOLDMAN D， DELANO J W， et al. Temporal and spatial distribution of biozones and facies relative to geochemically correlated K-bentonites in the Middle Ordovician Taconic foredeep［J］. Geology， 1994， 22（8）： 715-718.
30	PLUNKETT G， PILCHER J R. Defining the potential source region of volcanic ash in northwest Europe during the Mid-to Late Holocene［J］. Earth-Science Reviews， 2018， 179： 20-37.
31	FISHER R V， SCHMINCKE H U. Pyroclastic rocks［M］. Berlin： Springer， 1984.
32	HUFF W D. K-bentonites： A review［J］. American Mineralogist， 2016， 101（1）： 43-70.
33	HONG Hanlie， ALGEO T J， FANG Qian， et al. Facies dependence of the mineralogy and geochemistry of altered volcanic ash beds： An example from Permian-Triassic transition strata in southwestern China［J］. Earth-Science Reviews， 2019， 190： 58-88.
34	HONG Hanlie， ZHAO Lulu， FANG Qian， et al. Volcanic sources and diagenetic alteration of Permian-Triassic boundary K-bentonites in Guizhou Province， South China［J］. Palaeogeography， Palaeoclimatology， Palaeoecology， 2019， 519： 141-153.
35	HUFF W D， TÜRKMENOGLU A G. Chemical characteristics and origin of Ordovician K-bentonites along the Cincinnati arch［J］. Clays and Clay Minerals， 1981， 29（2）： 113-123.
36	CHRISTIDIS G E， HUFF W D. Geological aspects and genesis of bentonites［J］. Elements， 2009， 5（2）： 93-98.
37	ALTANER S P， HOWER J， WHITNEY G， et al. Model for K-bentonite formation： Evidence from zoned K-bentonites in the disturbed belt， Montana［J］. Geology， 1984， 12（7）： 412-415.
38	ALGEO T J， KUWAHARA K， SANO H， et al. Spatial variation in sediment fluxes， redox conditions， and productivity in the Permian-Triassic Panthalassic Ocean［J］. Palaeogeography， Palaeoclimatology， Palaeoecology， 2011， 308（1/2）： 65-83.
39	LIN Senhu， HOU Lianhua， LUO Xia， et al. A millimeter-scale insight into formation mechanism of lacustrine black shale in tephra deposition background［J］. Scientific Reports， 2022， 12（1）： 11511.
40	刘全有，李鹏，金之钧，等. 湖相泥页岩层系富有机质形成与烃类富集——以长7为例［J］. 中国科学：地球科学， 2022， 52（2）： 270-290.
	LIU Quanyou， LI Peng， JIN Zhijun， et al. Organic rich formation and hydrocarbon enrichment of lacustrine shale rock series： A case study of Chang 7［J］. Science China Earth Sciences， 2022， 52（2）： 270-290.
41	MORFORD J L， EMERSON S. The geochemistry of redox sensitive trace metals in sediments［J］. Geochimica et Cosmochimica Acta， 1999， 63（11/12）： 1735-1750.
42	ZHENG Yan， ANDERSON R F， VAN GEEN A， et al. Preservation of particulate non-lithogenic uranium in marine sediments［J］. Geochimica et Cosmochimica Acta， 2002， 66（17）： 3085-3092.
43	MORFORD J L， EMERSON S R， BRECKEL E J， et al. Diagenesis of oxyanions （V， U， Re， and Mo） in pore waters and sediments from a continental margin［J］. Geochimica et Cosmochimica Acta， 2005， 69（21）： 5021-5032.
44	HELZ G R， MILLER C V， CHARNOCK J M， et al. Mechanism of molybdenum removal from the sea and its concentration in black shales： EXAFS evidence［J］. Geochimica et Cosmochimica Acta， 1996， 60（19）： 3631-3642.
45	ZHENG Yan， ANDERSON R F， VAN GEEN A， et al. Authigenic molybdenum formation in marine sediments： A link to pore water sulfide in the Santa Barbara Basin［J］. Geochimica et Cosmochimica Acta， 2000， 64（24）： 4165-4178.
46	LYONS T W， SEVERMANN S. A critical look at iron paleoredox proxies： New insights from modern euxinic marine basins［J］. Geochimica et Cosmochimica Acta， 2006， 70（23）： 5698-5722.
47	POULTON S W， RAISWELL R. The low-temperature geochemical cycle of iron： From continental fluxes to marine sediment deposition［J］. American Journal of Science， 2002， 302（9）： 774-805.
48	RAISWELL R， CANFIELD D E. Sources of iron for pyrite formation in marine sediments［J］. American Journal of Science， 1998， 298（3）： 219-245.
49	POULTON S W， FRALICK P W， CANFIELD D E. The transition to a sulphidic ocean ～1.84 billion years ago［J］. Nature， 2004， 431（7005）： 173-177.
50	ANDERSON T F， RAISWELL R. Sources and mechanisms for the enrichment of highly reactive iron in euxinic Black Sea sediments［J］. American Journal of Science， 2004， 304（3）： 203-233.
51	MÄRZ C， POULTON S W， BECKMANN B， et al. Redox sensitivity of P cycling during marine black shale formation： Dynamics of sulfidic and anoxic， non-sulfidic bottom waters［J］. Geochimica et Cosmochimica Acta， 2008， 72（15）： 3703-3717.
52	CANFIELD D E， LYONS T W， RAISWELL R. A model for iron deposition to euxinic Black Sea sediments［J］. American Journal of Science， 1996， 296（7）： 818-834.
53	BREWER P G， SPENCER D W. Distribution of some trace elements in Black Sea and their flux between dissolved and particulate phases［M］//DEGENS E T， ROSS D A. The Black Sea-Geology， Chemistry， and Biology. Tulsa： American Association of Petroleum Geologists， 1974： 137-143.
54	LEWIS B L， LANDING W M. The biogeochemistry of manganese and iron in the Black Sea［J］. Deep Sea Research Part A. Oceanographic Research Papers， 1991， 38（）： S773-S803.
55	YUAN Wei， LIU Guangdi， BULSECO A， et al. Iron speciation in organic-rich shales from the Upper Triassic Yanchang Formation， Ordos Basin， Northern China： Implications for depositional environment［J］. Journal of Asian Earth Sciences， 2021， 220： 104917.
56	刘晓宁，姜在兴，袁晓冬，等. 滦平盆地白垩系细粒火山物质对页岩油气形成的影响［J］. 石油与天然气地质， 2022， 43（2）： 390-406.
	LIU Xiaoning， JIANG Zaixing， YUAN Xiaodong， et al. Influence of the Cretaceous fine-grained volcanic materials on oil/gas， Luanping Basin ［J］. Oil & Gas Geology， 2022， 43（2）： 390-406.

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The impact of volcanism on eutrophication and water column in a freshwater lacustrine basin： A case study of Triassic Chang 7 Member in Ordos Basin

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