异常高有机质沉积富集过程与元素地球化学特征

doi:10.11743/ogg20210414

Abstract

Abstract:

Organic matter (OM) accumulation plays a key role in the development of sweet spots in unconventional oil and gas plays, especially in shale. Fine-grained sedimentary rocks containing or associated with sweet spots generally have TOC content of higher than 3.0%. We define these sediments or sedimentary rocks with TOC ≥ 3.0% as the extraordinary high organic matter (EHOM) deposits, and propose conceptual hypotheses for the accumulation process of EHOM. We suggest that high primary productivity provides prerequisites for OM accumulation and that the anoxia is prone to enhance large scale accumulation of EHOM. We use the Wufeng-Longmaxi formations in the Sichuan Basin to carry out a case study for the discussion on the elemental bio-geochemical cycles during the EHOM accumulation processes. The conceptual hypothesis for EHOM enrichments constrained by elementary geochemistry is verified. Our result shows that the EHOM enrichment in the Wufeng-Longmaxi formations was the results of dynamic evolutions of the high primary productivity and the redox conditions jointly controlled by high primary productivity and water circulation. As one of the research targets of unconventional petroleum sedimentology, this study could help better understanding the forming mechanism of the "sweet-spots" and further support unconventional petroleum exploration and development.

Key words: extraordinary high organic matter content, fine-grained deposits, shale oil and gas, unconventional petroleum sedimentology, Longmaxi Formation, Sichuan Basin

CLC Number:

TE135

Zhen Qiu, Hengye Wei, Hanlin Liu, Nan Shao, Yuman Wang, Leifu Zhang, Qin Zhang. Accumulation of sediments with extraordinary high organic matter content: Insight gained through geochemical characterization of indicative elements[J]. Oil & Gas Geology, 2021, 42(4): 931-948.

Figures/Tables 10

Fig.1

Fig.2

Fig.3

Table 1

Fig.4

Fig.5

Fig.6

Table 2

Main elements geochemical data in the Wufeng-Longmaxi Formation, South China (some data are from references [92-96])"

参数	笔石带WF1-2						笔石带WF3-4
参数	巫溪田坝		石柱漆辽		长宁双河		巫溪田坝		石柱漆辽		长宁双河
TOC/%	1.7 (0~5)	N=22	2.9 (2.6~4.3)	N=6	2.5 (0.1~6.4)	N=16	4.3 (1.1~16)	N=34	6.9 (2.8~14)	N=15	3.8 (2.3~5.7)	N=31
Ba_bio/10^-6	1536 (611~3 153)	N=21	753 (697~824)	N=6	523 (327~930)	N=16	1749 (885~2 930)	N=34	748 (563~878)	N=15	537 (226~925)	N=35
P/10^-6	284 (87~829)	N=20	189 (131~393)	N=6	355 (175~567)	N=14	146 (44~786)	N=33	319 (87~698)	N=13	572 (218~916)	N=31
Cu_EF	1.5 (0.2~6.1)	N=22	1.3 (0.8~2.3)	N=6	3.0 (0.7~5.5)	N=16	3.7 (0.5~9.7)	N=34	2.7 (0.3~5.5)	N=15	3.6 (1.6~6.6)	N=35
Zn_EF	0.7 (0.2~5.3)	N=22	0.2 (0.1~0.4)	N=6	3.1 (0.5~12.4)	N=15	1.6 (0.3~7.2)	N=34	1.9 (0.2~8.5)	N=15	3.7 (0.3~12.4)	N=35
Mo_EF	15 (0.3~77)	N=22	4.1 (3.0~7.9)	N=6	17 (0.7~53.6)	N=16	72 (11~234)	N=34	162 (109~282)	N=15	87 (7.1~231)	N=31
U_EF	5.2 (0.9~16)	N=22	2.9 (1.9~4.4)	N=6	5.1 (1~8.4)	N=16	15 (6.9~24)	N=34	13 (9.7~17)	N=15	14 (4.3~44)	N=31
C_org/P	184 (7.4~591)	N=19	497 (177~848)	N=6	188 (10~343)	N=14	950 (59~3 154)	N=33	723 (277~1 804)	N=13	190 (105~325)	N=31

参数	笔石带LM1—5						笔石带LM6—8		笔石带LM9
参数	巫溪田坝		石柱漆辽		长宁双河		巫溪田坝		巫溪田坝
TOC/%	5.6 (3.8~8.4)	N=19	6.3 (3.5~9.5)	N=14	5.1 (3.1~8.8)	N=23	2.9 (1.2~4.4)	N=24	0.1 (0.1~0.2)	N=5
Ba_bio /10^-6	2 370 (1 704~4 173)	N=19	1 269 (988~1 882)	N=14	638 (513~887)	N=23	3 822 (2 393~5 497)	N=24	1 901 (1 652~2 302)	N=5
P /10^-6	161 (44~742)	N=19	293 (131~339)	N=14	451 (305~1 135)	N=23	343 (98~983)	N=24	528 (500~548)	N=5
Cu_EF	0.8 (0.2~1.8)	N=19	1.7 (0.1~6.5)	N=14	3.4 (1.4~12.7)	N=23	0.8 (0.1~2.6)	N=24	0.8 (0.7~0.9)	N=5
Zn_EF	1.1 (0.2~7.5)	N=19	0.9 (0.2~1.5)	N=14	10.7 (2.4~100.6)	N=23	1.2 (0.3~3.7)	N=24	1.2 (0.9~1.3)	N=5
Mo_EF	80 (7.7~332)	N=19	164 (38~264)	N=14	251 (112~859)	N=23	21 (2.6~42)	N=24	0.4 (0.3~0.7)	N=5
U_EF	17 (8.3~53)	N=19	18 (4.5~32)	N=14	22 (9.2~93)	N=23	5.0 (1.4~8.7)	N=24	1.1 (1.0~1.1)	N=5
C_org/P	1 299 (278~2 661)	N=19	622 (394~1 695)	N=14	304 (172~461)	N=23	289 (108~1 078)	N=24	5.6 (3.8~7.7)	N=5

Table 2

Fig.7

Fig.8

References 116

1	王红军, 马锋, 童晓光, 等. 全球非常规油气资源评价[J]. 石油勘探与开发, 2016, 43 (6): 850- 863.
	Wang Hongjun , Ma Feng , Tong Xiaoguang , et al. Assessment of global unconventional oil and gas resources[J]. Petroleum Exploration and Development, 2016, 43 (6): 850- 863.
2	邹才能, 邱振. 中国非常规油气沉积学新进展-"非常规油气沉积学"专辑前言[J]. 沉积学报, 2021, 39 (1): 1- 9.
	Zou Caineng , Qiu Zhen . Preface: new advances in unconventional petroleum sedimentology in China[J]. Acta Sedimentologica Sinica, 2021, 39 (1): 1- 9.
3	邹才能. 非常规油气地质[M]. 北京: 地质出版社, 2011: 1- 310.
	Zou Caineng . Unconventional petroleum geology[M]. Beijing: Geological Publishing House, 2011: 1- 310.
4	金之钧, 白振瑞, 高波, 等. 中国迎来页岩油气革命了吗?[J]. 石油与天然气地质, 2019, 40 (3): 451- 458.
	Jin Zhijun , Bai Zhenrui , Gao Bo , et al. Has China ushered in the shale oil and gas revolution?[J]. Oil & Gas Geology, 2019, 40 (3): 451- 458.
5	杨华, 李士祥, 刘显阳, 等. 鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报, 2013, 34 (1): 1- 11.
	Yang Hua , Li Shixiang , Liu Xianyang , et al. Characteristics and resource prospects of tight oil and shale oil in Ordos Basin[J]. Acta Petrolei Sinica, 2013, 34 (1): 1- 11.
6	马永生, 蔡勋育, 赵培荣. 中国页岩气勘探开发理论认识与实践[J]. 石油勘探与开发, 2018, 45 (4): 1- 14.
	Ma Yongsheng , Cai Xunyu , Zhao Peirong . China's shale gas exploration and development: Understanding and practice[J]. Petroleum Exploration and Development, 2018, 45 (4): 1- 14.
7	焦方正. 非常规油气之"非常规"再认识[J]. 石油勘探与开发, 2019, 46 (5): 803- 810.
	Jiao Fangzheng . Re-recognition of "unconventional" in unconventional oil and gas[J]. Petroleum Exploration and Development, 2019, 46 (5): 803- 810.
8	马新华, 谢军, 雍锐. 四川盆地南部龙马溪组页岩气地质特征及高产控制因素[J]. 石油勘探与开发, 2020, 47 (5): 841- 855.
	Ma Xinhua , Xie Jun , Yong Rui . Geological characteristics and high production control factors of shale gas in Silurian Longmaxi Formation, southern Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2020, 47 (5): 841- 855.
9	邱振, 邹才能. 非常规油气沉积学: 内涵与展望[J]. 沉积学报, 2020, 38 (1): 1- 29.
	Qiu Zhen , Zou Caineng . Unconventional petroleum sedimentology: Connotation and prospect[J]. Acta Sedimentologica Sinica, 2020, 38 (1): 1- 29.
10	邱振, 邹才能, 王红岩, 等. 中国南方五峰组-龙马溪组页岩气差异富集特征与控制因素[J]. 天然气地球科学, 2020, 31 (2): 163- 175.
	Qiu Zhen , Zou Caineng , Wang Hongyan , et al. Discussion on characteristics and controlling factors of differential enrichment of Wufeng-Longmaxi formations shale gas in South China[J]. Natural Gas Geoscience, 2020, 31 (2): 163- 175.
11	Tyson R V. Organic matter preservation: the effects of oxygen deficiey[M]//Tyson R V. Sedimentary organic matter: Organic facies and palynofacies. Berlin: Springer-Verlag, Chapman and Hall, 1995: 119-142.
12	Algeo T J , Ingall E . Sedimentary C_org: P ratios, paleocean ventilation, and Phanerozoic atmospheric PO₂[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2007, 256 (3): 130- 155.
13	姜在兴, 梁超, 吴靖, 等. 含油气细粒沉积研究的几个问题[J]. 石油学报, 2013, 34 (6): 1031- 1039.
	Jiang Zaixing , Liang Chao , Wu Jing , et al. Several issues in sedimentological studies on hydrocarbon-bearing fine-grained sedimentary rocks[J]. Acta Petrolei Sinica, 2013, 34 (6): 1031- 1039.
14	冉波, 刘树根, 孙玮, 等. 四川盆地及周缘下古生界五峰组-龙马溪组页岩岩相分类[J]. 地学前缘, 2016, 23 (2): 96- 107.
	Ran Bo , Liu Shugen , Sun Wei , et al. Lithfacies classification of shales of the Lower PaleozoicWufeng-Longmaxi Formations in the Sichuan Basin and its surrounding areas, China[J]. Earth Science Frontiers, 2016, 23 (2): 96- 107.
15	刘招君, 杨虎林, 董清水, 等. 中国油页岩[M]. 北京: 石油工业出版社, 2009: 38- 116.
	Liu Zhaojun , Yang Hulin , Dong Qingshui , et al. Oil Shale in China[M]. Beijing: Petroleum Industry Press, 2009: 27- 27.
16	Xu Jinjun , Liu Zhaojun , Bechtel A , et al. Organic matter accumulation in the Upper Cretaceous Qingshankou and Nenjiang Formations, Songliao Basin (NE China): Implications from highresolution geochemical analysis[J]. Marine and Petroleum Geology, 2019, 102, 187- 201. doi: 10.1016/j.marpetgeo.2018.12.037
17	郑国栋, 孟庆涛, 刘招君. 松辽盆地北部青一段油页岩地球化学特征及其记录的古湖泊学信息[J]. 吉林大学学报(地球科学版), 2020, 50 (2): 392- 404.
	Zheng Guodong , Meng Qingtao , Liu Zhaojun . Geochemical characteri-stics and paleolimnological information of oil shale in 1st member of Qingshankou Formation in Northern Songliao Basin[J]. Journal of Jilin University (Earth Science Edition), 2020, 50 (2): 392- 404.
18	Qiu Zhen , Zou Caineng . Controlling factors on the formation and distribution of "sweet-spot areas" of marine gas shales in South China and a preliminary discussion on unconventional petroleum sedimentology[J]. Journal of Asian Earth Sciences, 2020, 194, 103989. doi: 10.1016/j.jseaes.2019.103989
19	Li Jinbu , Wang Min , Lu Shuangfang , et al. A new method for predicting sweet spots of shale oil using conventional well logs[J]. Marine and Petroleum Geology, 2020, 113, 104097. doi: 10.1016/j.marpetgeo.2019.104097
20	Bhattacharya S , Carr T R . Integrated data-driven 3D shale lithofacies modeling of the Bakken Formation in the Williston basin, North Dakota, United States[J]. Journal of Petroleum Science and Enginee-ring, 2019, 177, 1072- 1086. doi: 10.1016/j.petrol.2019.02.036
21	Rageneau O , Tréguer P , Leynaert A , et al. A review of the Si cycle in the modern ocean: recent progress and missing gaps in the application of biogenic opal as a paleoproductivity proxy[J]. Global and Planetary Change, 2000, 26 (4): 317- 365. doi: 10.1016/S0921-8181(00)00052-7
22	Levinton J S . Marine biology: function, biodiversity, ecology[M]. Oxford: Oxford University Pres, 2008: 1- 640.
23	Tribovillard N , Algeo T J , Lyons T W , et al. Trace metals as paleoredox and paleoproductivity proxies: an update[J]. Chemical Geology, 2006, 232 (1-2): 12- 32. doi: 10.1016/j.chemgeo.2006.02.012
24	Calvert SE, Pedersen T. Elemental proxies for paleoclimatic and palaeoceanographic variability in marine sediments: interpretation and application[M]//Hillaire-Marcel C, Vernal A. Developments in marine geology, proxies in Late Cenozoic Paleoceanography. Oxford: Elsevie, 2007.
25	Algeo T J , Li C . Redox classification and calibration of redox thresholds in sedimentary systems[J]. Geochimica et Cosmochimica Acta, 2020, 287, 8- 26. doi: 10.1016/j.gca.2020.01.055
26	Algeo T J , Tribovillard N . Environmental analysis of paleoceanographic systems based on molybdenum-uranium covariation[J]. Chemical Geology, 2009, 268 (3-4): 211- 225. doi: 10.1016/j.chemgeo.2009.09.001
27	Keeling RF , Körtzinger A , Gruber N . Ocean deoxygenation in a warming world[J]. Annual Review of Marine Science, 2010, 2, 199- 229. doi: 10.1146/annurev.marine.010908.163855
28	Piper D Z , Calvert S E . A marine biogeochemical perspective on black shale deposition[J]. Earth-Science Reviews, 2009, 95 (1-2): 63- 96. doi: 10.1016/j.earscirev.2009.03.001
29	Crusius J , Calvert S E , Pedersen T F , et al. Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and anoxic conditions of deposition[J]. Earth and Planetary Science Letters, 1996, 145 (1-4): 65- 78. doi: 10.1016/S0012-821X(96)00204-X
30	Correll D L . The role of phosphorus in the Eutrophication of receiving waters: A review[J]. Journal of Environmental Quality, 1998, 27 (2): 261- 266.
31	Broecker W S , Peng T H . Tracers in the Sea[M]. New York: Eldigio Press, 1982: 1- 690.
32	Tyrrell T . The relative influences of nitrogen and phosphorus on ocean primary production[J]. Nature, 1999, 400, 525- 531. doi: 10.1038/22941
33	Tsandev I , Slomp C P . Modeling phosphorus cycling and carbon burial during Cretaceous Oceanic Anoxic Events[J]. Earth and Planetary Science Letters, 2009, 286 (1-2): 71- 79. doi: 10.1016/j.epsl.2009.06.016
34	Wallmann K . Phosphorus imbalance in the global ocean?[J]. Global Biogeochemical Cycles, 2010, 24 (4): GB4030.
35	Van Cappellen P , Ingall E D . Benthic phosphorus regeneration, net primary production, and ocean anoxia: a model of the coupled marine biogeochemical cycle of carbon and phosphorus[J]. Paleoceanography, 1994, 9 (5): 677- 692. doi: 10.1029/94PA01455
36	Slomp C , Van Cappellen P . The global marine phosphorus cycle: sensitivity to oceanic circulation[J]. Biogeosciences, 2007, 4, 155- 171. doi: 10.5194/bg-4-155-2007
37	Spivakov B Y , Maryutina T A , Huntau H . Phosphorus speciation in water and sediments[J]. Pure and Applied Chemistry, 1999, 71 (11): 2161- 2176. doi: 10.1351/pac199971112161
38	Ruttenberg K C , Berner R A . Authigenic apatite formation and burial in sediments from non-upwelling, continental margin environments[J]. Geochimica et Cosmochimica Acta, 1993, 57 (5): 991- 1007. doi: 10.1016/0016-7037(93)90035-U
39	Egger M , Jilbert T , Behrends T , et al. Vivianite is a major sink for phosphorus in methanogenic coastal surface sediments[J]. Geochimica et Cosmochimica Acta, 2015, 169, 217- 235. doi: 10.1016/j.gca.2015.09.012
40	Xiong Y , Guilbaud R , Peacock C L , et al. Phosphorus cycling in Lake Cadagno, Switzerland: A low sulfate euxinic ocean analogue[J]. Geochimicaet Cosmochimica Acta, 2019, 251, 116- 135. doi: 10.1016/j.gca.2019.02.011
41	Poulton S W . Biogeochemistry: Early phosphorus redigested[J]. Nature Geoscience, 2017, 10, 75. doi: 10.1038/ngeo2884
42	Alcott L J , Mills B J W , Poulton S W . Stepwise Earth oxygenation is an inherent property of global biogeochemical cycling[J]. Science, 2019, 366 (6471): 1333- 1337. doi: 10.1126/science.aax6459
43	Redfield A C , Ketchum B H , Richards F A . The influence of organisms on the composition of seawater[M]. New York: Wiley, 1963: 26- 77.
44	Li Y H , Peng T H . Latitudinal change of remineralization ratios in the oceans and its implication for nutrient cycles[J]. Global Biogeoche-mical Cycles, 2002, 16 (4): 1130- 1145.
45	Van der Zee C , Slomp C P , Van Raaphorst W . Authigenic P formation and reactive P burial in sediments of the Nazare canyon on the Iberian margin (NE Atlantic)[J]. Marine Geology, 2002, 185 (3-4): 379- 392. doi: 10.1016/S0025-3227(02)00189-5
46	Anderson L A , Sarmiento J L . Refield ratios of remineralization determined by nutrient data analysis[J]. Global Biogeochemical Cycles, 1994, 8 (1): 65- 80. doi: 10.1029/93GB03318
47	Vance D , de Souza G F , Zhao Y , et al. The relationship between zinc, its isotopes, and the major nutrients in the North-East Pacific[J]. Earth and Planetary Science Letters, 2019, 525, 115748. doi: 10.1016/j.epsl.2019.115748
48	Bruland K W, Middag R, Lohan M C. Controls of trace metals in seawate[M]//Holland H D, Turekian K K. Treatise on geochemistry (2nd edition). Holland: Elsevier, 2014.
49	Morel F M M, Milligan A J, Saito M A. Marine bioinorganic chemistry: the role of trace metals in the oceanic cycles of the major nutrients[M]//Holland H D, Turekian KK. Treatise on Geochemistry (2nd edition). Holland: Elsevier, 2014.
50	Boyle E A , Sclater F R , Edmond J M . The distribution of dissolved copper in the Pacific[J]. Earth and Planetary Science Letters, 1977, 37 (1): 38- 54. doi: 10.1016/0012-821X(77)90144-3
51	John S G , Conway T M . A role for scavenging in the marine biogeochemical cycling of zinc and zinc isotopes[J]. Earth and Planetary Science Letters, 2014, 394, 159- 167. doi: 10.1016/j.epsl.2014.02.053
52	Nameroff T J , Calvert S E , Murray J W . Glacial-interglacial variability in the eastern tropical North Pacific oxygen minimum zone recorded by redox-sensitive trace metals[J]. Paleoceanography, 2004, 19 (1): PA1010.
53	Naimo D , Adamo P , Imperato M , Stanzione D . Mineralogy and geochemistry of a marine sequence, Gulf of Salerno, Italy[J]. Quaternary International, 2005, 140-141, 53- 63. doi: 10.1016/j.quaint.2005.05.004
54	Huerta-Diaz M A , Morse J W . Pyritisation of trace metals in anoxic marine sediments[J]. Geochimica et Cosmochimica Acta, 1992, 56, 2681- 2702. doi: 10.1016/0016-7037(92)90353-K
55	Pinedo-Gonzalez P , West A J , Tovar-Sanchez A , et al. Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplantonic biomass and productivity[J]. Global Biogeochemistry Cycles, 2015, 29 (10): 1763- 1781. doi: 10.1002/2015GB005149
56	Moore J W , Ramamoorthy S . Heavy metals in natural waters: applied monitoring and impact assessment[M]. New York: Springer, 1984: 1- 268.
57	Goldman C R , Horne A J . Limnology[M]. New York: McGraw-Hill, 1983: 1- 464.
58	Goldman C R. Micronutrient limiting factors and their detection in natural phytoplankton populations[M]//Goldman CR. Primary productivity in aquatic environments. California: University of California Press, 1966.
59	Sunda W G , Huntsman S A . Cobalt and zinc interreplacement in marine phytoplankton: biological and geochemical implications[J]. Limnology and Oceanography, 1995, 40, 1404- 1417. doi: 10.4319/lo.1995.40.8.1404
60	Wang W X , Guo L . Bioavailability of colloid-bound Cd, Cr and Zn to marine plankton[M]. New York: Marine Ecology Progress Series, 2000.
61	Calvert S E , Pedersen T F . Geochemistry of recent oxic and anoxic marine sediments: implications for the geological record[J]. Marine Geology, 1993, 113 (1-2): 67- 88. doi: 10.1016/0025-3227(93)90150-T
62	Algeo T J , Maynard J B . Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems[J]. Chemical Geology, 2004, 206 (3-4): 289- 318. doi: 10.1016/j.chemgeo.2003.12.009
63	Morse J W , Luther Ⅲ G W . Chemical influences on trace metal-sulfide interactions in anoxic sediments[J]. Geochimica et Cosmochimica Acta, 1999, 63 (19-20): 3373- 3378. doi: 10.1016/S0016-7037(99)00258-6
64	Chan L H , Drummond D , Edmond J M , et al. On the barium data from the Atlantic GEOSECS Expedition[J]. Deep Sea Research, 1977, 24 (7): 613- 649. doi: 10.1016/0146-6291(77)90505-7
65	Paytan A , Griffith E . Marine barite: recorder of variations in ocean export productivity[J]. Deep-Sea Research Part ii-Topical Studies in Oceanography, 2007, 54 (5-7): 687- 705. doi: 10.1016/j.dsr2.2007.01.007
66	Dehairs F , Goeyens L , Stroobants N , et al. On suspended barite and the oxygen minimum in the Southern Ocean[J]. Global Biogeochemistry Cycles, 1990, 4 (1): 85- 102. doi: 10.1029/GB004i001p00085
67	Bishop J K B . The barite-opal-organic carbon association in oceanic particulate matter[J]. Nature, 1988, 332, 341- 343. doi: 10.1038/332341a0
68	Church T M Wolgemuth K . Marine barite saturation[J]. Earth and Planetary Science Letters, 1972, 15 (1): 35- 44. doi: 10.1016/0012-821X(72)90026-X
69	Dymond J , Suess E , Lyle M . Barium in deep-sea sediment: a geochemical proxy for paleoproductivity[J]. Paleoceanography, 1992, 7 (2): 163- 181. doi: 10.1029/92PA00181
70	McManus J , Berelson W M , Klinkhammer G P , et al. Remobilization of barium in continental margin sediments[J]. Geochimica et Cosmochimica Acta, 1994, 58 (22): 4849- 4907.
71	Francois R , Honjo S , Manganini S , et al. Biogenic barium fluxes to the deep sea: implications for paleoproductivity reconstruction[J]. Global Biogeochemistry Cycles, 1995, 9 (2): 289- 303. doi: 10.1029/95GB00021
72	Griffith E , Paytan A . Barite in the ocean-occurrence, geochemistry and palaeoceanographic applications[J]. Sedimentology, 2012, 59 (6): 1817- 1835. doi: 10.1111/j.1365-3091.2012.01327.x
73	Paytan A , Kastner M , Chavez F P . Glacial to interglacial fluctuation in productivity in the Equitorial Pacific as indicated by marine barite[J]. Science, 1996, 274, 1355- 1357. doi: 10.1126/science.274.5291.1355
74	Schoepfer S D , Shen J , Wei H , et al. Total organic carbon, organic phosphorus, and biogenic barium fluxes as proxies for paleomarine productivity[J]. Earth Science Reviews, 2015, 149, 23- 52. doi: 10.1016/j.earscirev.2014.08.017
75	Von Breymann M T, Emeis K C, Suess E. Water depth and diagenetic constraints on the use of barium as a palaeoproductivity indicator[M]//Summerhayes C P, Prell W L, Emeis K C. Upwelling Systems: Evolution since the Early Miocene. London: Geological Society, 1992.
76	Zheng Y , 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. doi: 10.1016/S0016-7037(00)00495-6
77	Morford J L , Martin W R , Carney C M . Uranium diagenesis in sediments underlying bottom waters with high oxygen content[J]. Geochimica et Cosmochimica Acta, 2009, 73 (10): 2920- 2937. doi: 10.1016/j.gca.2009.02.014
78	Helz G R , Miller C V , Charnock J M , Mosselmans J L W , et al. Mechanisms of molybdenum removal from the sea and its concentration in black shales: EXAFS evidences[J]. Geochimica et Cosmochimica Acta, 1996, 60 (19): 3631- 3642. doi: 10.1016/0016-7037(96)00195-0
79	Tribovillard N , Riboulleau A , Lyons T , et al. Enhanced trapping of molybdenum by sulfurized organic matter of marine origin as recorded by various Mesozoic formations[J]. Chemical Geology, 2004, 213, 385- 401. doi: 10.1016/j.chemgeo.2004.08.011
80	Klinkhammer G P , Palmer M R . Uranium in the oceans: where it goes and why[J]. Geochimica et Cosmochimica Acta, 1991, 55 (7): 1799- 1806. doi: 10.1016/0016-7037(91)90024-Y
81	Morford J L , Martin W R , Francois R , Carney C M . A model for uranium, rhenium, and molybdenum diagenesis in marine sediments based on results from coastal locations[J]. Geochimica et Cosmochimica Acta, 2009, 73 (10): 2938- 2960. doi: 10.1016/j.gca.2009.02.029
82	Johnson K S , Berelson W M , Coale K H , et al. Manganese flux from continental margin sediments in a transect through the oxygen minimum zone[J]. Science, 1992, 257 (5074): 1242- 1245. doi: 10.1126/science.257.5074.1242
83	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. doi: 10.1016/S0016-7037(99)00126-X
84	Algeo T J , Lyons T W . Mo-total organic carbon covariation in modern anoxic marine environments: implication for analysis of paleoredox and paleohydrographic conditions[J]. Paleoceanography, 2006, 21 (1): PA1016.
85	Jones B , Manning D A C . Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones[J]. Chemical Geology, 1994, 111 (1-4): 111- 129. doi: 10.1016/0009-2541(94)90085-X
86	McLennan S M. Relationships between the trace element composition of sedimentary rocks and upper continental crust[J]. Geochemistry Geophysics Geosystems, 2001, 2(4): 2000GC000109.
87	Taylor S R , McLennan S M . The continental crust: Its composition and evolution[M]. United States: Blackwell, Malden, Mass, 1985: 1- 312.
88	Ahrens LH, Press F, Runcom SK, Urey HC (Eds. ), Physics and Chemistry of the Earth[M]//Wedepohl K H. Environmental influences on the chemical composition of shales and clays. Oxford: Pergamon, 1971: 305-333.
89	Wedepohl K H. The composition of the upper Earth's crust and the natural cycles of selected metals. In: Merian E (Eds. ), Metals and their Compounds in the Environment[M]. Weinheim: VCH-Verlagsgesellschaft, 1991: 3-17.
90	Tribovillard N , Algeo T J , Baudin F , Riboulleau A . Analysis of marine environmental conditions based on molybdenum-uranium covariation-Applications to Mesozoic paleoceanography[J]. Chemical Geology, 2012, 324-325, 46- 58. doi: 10.1016/j.chemgeo.2011.09.009
91	陈旭, 樊隽轩, 张元动, 等. 五峰组及龙马溪组黑色页岩在扬子覆盖区内的划分与圈定[J]. 地层学杂志, 2015, 39 (4): 351- 358.
	Chen Xu , Fan Junxuan , Zhang Yuandong , et al. Subdivision and delineation of the Wufeng and Lungmachi black shales in the subsurface areas of the Yangtze Platform[J]. Journal of stratigraphy, 2015, 39 (4): 351- 358.
92	Zou C N , Qiu Z , Poulton S W , et al. Ocean euxinia and climate change "double whammy" drove the Late Ordovician mass extinction[J]. Geology, 2018, 46 (6): 535- 538. doi: 10.1130/G40121.1
93	Zou C N , Qiu Z , Wei H Y , et al. Euxinia caused the Late Ordovician extinction: Evidence from pyrite morphology and pyritic sulfur isotopic composition in the Yangtze area, South China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2018, 511, 1- 11. doi: 10.1016/j.palaeo.2017.11.033
94	邱振, 江增光, 董大忠, 等. 巫溪地区五峰组-龙马溪组页岩有机质沉积模式[J]. 中国矿业大学学报, 2017, 46 (5): 1134- 1143.
	Qiu Zhen , Jiang Zengguang , Dong Dazhong , et al. Organic matter enrichment model of the shale in Wufeng-Longmachi Formation of Wuxi area[J]. Journal of China University of Mining & Technology, 2017, 46 (5): 134- 1143.
95	邱振, 卢斌, 陈振宏, 等. 火山灰沉积与页岩有机质富集关系探讨-以五峰组-龙马溪组含气页岩为例[J]. 沉积学报, 2019, 37 (6): 1296- 1308.
	Qiu Zhen , Lu Bin , Chen Zhenhong , et al. Discussion of the relationship between volcanic ash layers and organic enrichment of black shale: A case study of the Wufeng-Longmaxi gas shales in the Sichuan Basin[J]. Acta Sedimentologica Sinica, 2019, 37 (6): 1296- 1308.
96	Lu Bin , Qiu Zhen , Zhang Baohua , et al. Geochemical characteristics and geological significance of the bedded chert during the Ordovician and Silurian transition in the Shizhu area, Chongqing, South China[J]. Canadian Journal of Earth Sciences, 2019, 56 (4): 419- 430. doi: 10.1139/cjes-2018-0160
97	戎嘉余, 黄冰. 华南奥陶纪末生物大灭绝的肇端标志[J]. 地质学报, 2019, 93 (3): 509- 527.
	Rong Jiayu , Huang Bing . An indicator of the onset of the end Ordovician mass extinction in South China[J]. Acta Geologica Sinica, 2019, 93 (3): 509- 527.
98	Rong Jiayu , Harper D A T , Huang Bing , et al. The latest Ordovician Hirnantian brachiopod faunas: New global insights[J]. Earth-Science Reviews, 2020, 208, 103280. doi: 10.1016/j.earscirev.2020.103280
99	Stockey R G , Cole D B , Planavsky N J , et al. Sperling E A. Persistent global marine euxinia in the early Silurian[J]. Nature Communications, 2020, 11, 1804. doi: 10.1038/s41467-020-15400-y
100	Richards F A. The enhanced preservation of organic matter in anoxic marine environments[M]//Hood DW. Organic matter in natural waters. University of Alaska: Occasional Publication of the Institute of Marine Science, 1976, 1: 399-411.
101	Slater R D. Kroopnick R. Controls on the dissolved oxygen distribution and organic carbon deposition in the Arabian Sea[M]//Haq B U, Milliman JD. Marine geology and oceanography of Arabian Sea and Coastal Pakistan. New York: Van Nostrand Reinhold, 1984: 305-313.
102	Raiswell R , Buckley F , Berner R A , et al. Degree of pyritization of iron as a paleoenvironmental indicator of bottom-water oxygenation[J]. Journal of Sedimentary Petrology, 1988, 58 (5): 812- 819.
103	Lash G G , Blood D R . Organic matter accumulation, redox, and diagenetic history of the Marcellus Formation, southwestern Pennylvanian, Appalachian basin[J]. Marine and Petrleum Geology, 2014, 57, 244- 263. doi: 10.1016/j.marpetgeo.2014.06.001
104	Tyson RV. The genesis and palynofacies charateristics of marine petroleum source rocks[M]//Brooks J, Fleet AJ. Marine petroleum source rocks. London: Geological Society Special Publication, 1987.
105	Schulte S , Rostek F , Bard E , et al. Variations of oxygen-minimum and primary productivity recorded in sediments of the Arabian Sea[J]. Earth and Planetary Science Letters, 1999, 173 (3): 205- 221. doi: 10.1016/S0012-821X(99)00232-0
106	Schulte P , Schwark L , Stassen P , et al. Black shale formation during the Latest Danian Event and the Paleocene-Eocene Thermal Maximum in central Egypt: Two of a kind?[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 2013, 371, 9- 25. doi: 10.1016/j.palaeo.2012.11.027
107	Karstensen J , Stramma L , Visbeck M . Oxygen minimum zones in the eastern tropical Atlantic and Pacific oceans[J]. Progress Oceanography, 2008, 77 (4): 331- 350. doi: 10.1016/j.pocean.2007.05.009
108	Li C , Love G D , Lyons T W , et al. A stratified redox model for the Ediacaran ocean[J]. Science, 2010, 328 (5874): 80- 83.
109	Glenn C R , Arthur M A . Sedimentary and geochemical indicators of productivity and oxygen contents in modern and ancient basins: the Holocene Black Sea as the "type" anoxic basin[J]. Chemical Geology, 1985, 48 (1-4): 325- 354. doi: 10.1016/0009-2541(85)90057-9
110	Murray J W , Jannasch H W , Honjo S , et al. Unexpected changes in the oxic/anoxic interface in the Black Sea[J]. Nature, 1989, 338, 411- 413. doi: 10.1038/338411a0
111	Sageman B B , Murphy A E , Werne J P , et al. A tale of shales: the relative roles of production, decomposition, and dilution in the accumulation of organic-rich strata, Middle-Upper Devonian, Appalachian basin[J]. Chemical Geology, 2003, 195 (1-4): 229- 273. doi: 10.1016/S0009-2541(02)00397-2
112	Cebrian J . Variability and control of carbon consumption, export and accumulation in marine communities[J]. Limnology and Oceanography, 2002, 47 (1): 11- 22. doi: 10.4319/lo.2002.47.1.0011
113	Duarte C M , Cebrian J . The fate of marine autotrophic production[J]. Limnology and Oceanography, 1996, 41 (8): 1759- 1766.
114	Middleburg J J , Soetaert K , Herman P M J . Empirical relationships for use in global diagenetic models[J]. Deep-sea Research I, 1997, 44 (2): 327- 344. doi: 10.1016/S0967-0637(96)00101-X
115	Tyson RV . Sedimentation rate, dilution, preservation and total organic carbon: some results of a modelling study[J]. Organic Geochemistry, 2001, 32 (2): 333- 339. doi: 10.1016/S0146-6380(00)00161-3
116	Nielsen S L, Pedersen M F, Banta G T. Attempting a synthesis-plant/nutrient interactions[M]//Nielsen SL, Banta GT, Pedersen MF. Estuarine nutrient cycling: The influence of primary producer. London: Kluwer Academic Publishers, 2004: 281-292.

元素	平均海水中浓度/(10^-9 mol·L^-1)	海水居留时间/ka	平均上地壳^[86] (UCC)中浓度/10^-6	澳大利亚后太古宙平均页岩^[87] (PAAS)中浓度/10^-6	世界平均页岩^[88-89] (WSA)中浓度/10^-6
Ba	109.00	10	550.0	650.0	650.0
Cd	0.62	50	0.1	0.1	0.3
Cr	4.04	8	83.0	110.0	90.0
Cu	2.36	5	25.0	50.0	45.0
Mo	105.00	800	1.5	1.0	1.3
Ni	8.18	6	44.0	55.0	68.0
U	13.40	400	2.8	3.1	3.0
V	39.30	50	107.0	150.0	130.0
Zn	5.35	50	71.0	85.0	95.0
Al			80 400.0	100 024.0	88 900.0

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Accumulation of sediments with extraordinary high organic matter content: Insight gained through geochemical characterization of indicative elements

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