PDF(2984 KB)
Constraints of Paleoclimate and Paleoenvironment on Organic Matter Enrichment in Lishui Sag, East China Sea Basin: Evidence from Element Geochemistry of Paleocene Mudstones
Lei Chuang, Ye Jiaren, Shiyan Yin, Wu Jingfu, Jing Yuqian
PDF(2984 KB)
PDF(2984 KB)
Constraints of Paleoclimate and Paleoenvironment on Organic Matter Enrichment in Lishui Sag, East China Sea Basin: Evidence from Element Geochemistry of Paleocene Mudstones
,
In order to fully understand the hydrocarbon generation potential of the Paleocene Yueguifeng, Lingfeng and Mingyuefeng formations in the Lishui Sag, East China Sea Basin, variations in paleoclimate and paleoenvironment and their influence on organic matter enrichment are investigated through analyzing major and trace elements. Results show that the Paleocene sediments are low in terrigenous detrital components and rich in authigenic components, where major and trace elements did not experience diagenetic alteration. Multiple geochemical proxies suggest that paleoclimate during the Yueguifeng, Lingfeng and Mingyuefeng formations depositional periods was humidity, drought and humidity, respectively, while corresponding paleo-salinity was brackish water, saline water and fresh water, and paleowater depth was relatively deep water, relatively shallow water and shallow water, respectively. Water column evolved from reducing condition to oxidizing condition, and then to weak oxidizing-oxidizing condition, respectively. Organic matter productivity and preservation/degradation controlled by co-variations of paleoclimate and paleoenvironment accounted for the difference in organic matter enrichment of the Yueguifeng, Lingfeng and Mingyuefeng formations mudstones. The Yueguifeng Formation mudstone was deposited in semi-deep to deep lake environment with high productivity under warm-humid climate. Considerable planktonic algae were efficiently preserved at a stratified and dysoxic water column, resulting in high organic matter abundance. The Lingfeng Formation mudstone was developed at oxygen-enriched shallow marine environment under arid climate, which was not conducive to the reproduction and preservation of planktonic algae, giving rise to low organic matter abundance. The Mingyuefeng Formation coal-bearing mudstone was deposited in marine-continental transitional environment with low productivity under warm-humid climate, where flat terrain and considerable higher plants contributed to the development of alternated beds of coal and mudstone. The future oil and gas exploration in the Lishui Sag should focus on hydrocarbon generation center of the Yueguifeng Formation with high organic matter abundance and hydrocarbon generation capacity, and select effective structural or lithologic traps.
major element / trace element / paleoclimate / paleoenvironment / organic matter enrichment / Lishui Sag / petroleum geology
|
Adachi, M., Yamamoto, K., Sugisaki, R., 1986. Hydrothermal Chert and Associated Siliceous Rocks from the Northern Pacific: Their Geological Significance as Indication of Ocean Ridge Activity. Sedimentary Geology, 47(1-2): 125-148. https://doi.org/10.1016/0037-0738(86)90075-8
|
|
Adegoke, A. K., Abdullah, W. H., Hakimi, M. H., et al., 2015. Geochemical Characterisation and Organic Matter Enrichment of Upper Cretaceous Gongila Shales from Chad (Bornu) Basin, Northeastern Nigeria: Bioproductivity Versus Anoxia Conditions. Journal of Petroleum Science and Engineering, 135: 73-87. https://doi.org/10.1016/j.petrol.2015.08.012
|
|
Algeo, T. J., Maynard, J. B., 2004. Trace-Element Behavior and Redox Facies in Core Shales of Upper Pennsylvanian Kansas-Type Cyclothems. Chemical Geology, 206(3-4): 289-318. https://doi.org/10.1016/j.chemgeo.2003.12.009
|
|
Cai, X.F., 1994. Paleoclimate as a Necessary Factor in Basin Analysis. Sedimentary Facies and Palaeogeography, 14(2): 42-46 (in Chinese).
|
|
Calvert, S. E., Pedersen, T. F., 2007. Elemental Proxies for Palaeoclimatic and Palaeoceanographic Variability in Marine Sediments: Interpretation and Application. Developments in Marine Geology. Elsevier, Amsterdam, 567-644. https://doi.org/10.1016/s1572-5480(07)01019-6
|
|
Cui, T., Jiao, Y.Q., Du, Y.S., et al., 2013. Analysis on Paleosalinity of Sedimentary Environment of Bauxite in Wuchuan-Zheng’an-Daozhen Area, Northern Guizhou Province. Geological Science and Technology Information, 32(1): 46-51 (in Chinese with English abstract).
|
|
Cullers, R. L., 2000. The Geochemistry of Shales, Siltstones and Sandstones of Pennsylvanian-Permian Age, Colorado, USA: Implications for Provenance and Metamorphic Studies. Lithos, 51(3): 181-203. https://doi.org/10.1016/s0024-4937(99)00063-8
|
|
Ding, X.J., Liu, G.D., Huang, Z.L., et al., 2016. Controlling Function of Organic Matter Supply and Preservation on Formation of Source Rocks. Earth Science, 41(5): 832-842 (in Chinese with English abstract).
|
|
Fan, Y.H., Qu, H.J., Wang, H., et al., 2012. The Application of Trace Elements Analysis to Identifying Sedimentary Media Environment: A Case Study of Late Triassic Strata in the Middle Part of Western Ordos Basin. Geology in China, 39(2): 382-389 (in Chinese with English abstract).
|
|
Fu, C., Li, S. L., Li, S. L., et al., 2022. Genetic Types of Mudstone in a Closed-Lacustrine to Open-Marine Transition and Their Organic Matter Accumulation Patterns: A Case Study of the Paleocene Source Rocks in the East China Sea Basin. Journal of Petroleum Science and Engineering, 208: 109343. https://doi.org/10.1016/j.petrol.2021.109343
|
|
Gao, Y.D., Lin, H.M., Wang, X.D., et al., 2022. Geochemical Constraints on the Sedimentary Environment of Wenchang Formation in Pearl River Mouth Basin and Its Paleoenvironmental Implications. Geoscience, 36(1): 118-129 (in Chinese with English abstract).
|
|
Garzanti, E., Padoan, M., Setti, M., et al., 2013. Weathering Geochemistry and Sr-Nd Fingerprints of Equatorial Upper Nile and Congo Muds. Geochemistry, Geophysics, Geosystems, 14(2): 292-316. https://doi.org/10.1002/ggge.20060
|
|
Ge, H.P., Chen, X.D., Diao, H., et al., 2012. An Analysis of Oil Geochemistry and Sources in Lishui Sag, East China Sea Basin. China Offshore Oil and Gas, 24(4): 8-12, 31 (in Chinese with English abstract).
|
|
Hao, F., Zhou, X. H., Zhu, Y. M., et al., 2011. Lacustrine Source Rock Deposition in Response to Co-Evolution of Environments and Organisms Controlled by Tectonic Subsidence and Climate, Bohai Bay Basin, China. Organic Geochemistry, 42(4): 323-339. https://doi.org/10.1016/j.orggeochem.2011.01.010
|
|
Hatch, J. R., Leventhal, J. S., 1992. Relationship between Inferred Redox Potential of the Depositional Environment and Geochemistry of the Upper Pennsylvanian (Missourian) Stark Shale Member of the Dennis Limestone, Wabaunsee County, Kansas, U.S.A.. Chemical Geology, 99(1-3): 65-82. https://doi.org/10.1016/0009-2541(92)90031-y
|
|
Hu, J.J., Ma, Y.S., Wang, Z.X., et al., 2017. Palaeoenvironment and Palaeoclimate of the Middle to Late Jurassic Revealed by Geochemical Records in Northern Margin of Qaidam Basin. Journal of Palaeogeography (Chinese Edition), 19(3): 480-490 (in Chinese with English abstract).
|
|
Jaraula, C. M. B., Siringan, F. P., Klingel, R., et al., 2014. Records and Causes of Holocene Salinity Shifts in Laguna de Bay, Philippines. Quaternary International, 349: 207-220. https://doi.org/10.1016/j.quaint.2014.08.048
|
|
Jiang, L., Li, B.H., Zhong, S.L., et al., 2004. Biostratigraphy and Paleoenvironment of the Yueguifeng Formation in the Taipei Depression of the Continental Shelf Basin of the East China Sea. Marine Geology & Quaternary Geology, 24(1): 37-42 (in Chinese with English abstract).
|
|
Jiang, Z. L., Li, Y. J., Du, H. L., et al., 2015. The Cenozoic Structural Evolution and Its Influences on Gas Accumulation in the Lishui Sag, East China Sea Shelf Basin. Journal of Natural Gas Science and Engineering, 22: 107-118. https://doi.org/10.1016/j.jngse.2014.11.024
|
|
Jin, S., Ma, P.F., Guo, H., et al., 2022. Genesis of Mesoproterozoic Gaoyuzhuang Formation Manganese Ore in Qinjiayu, East Hebei: Constraints from Mineralogical and Geochemical Evidences. Earth Science, 47(1): 277-289 (in Chinese with English abstract).
|
|
Jones, B., Manning, D. A. C., 1994. Comparison of Geochemical Indices Used for the Interpretation of Palaeoredox Conditions in Ancient Mudstones. Chemical Geology, 111(1-4): 111-129. https://doi.org/10.1016/0009-2541(94)90085-x
|
|
Kaufman, A. J., Knoll, A. H., 1995. Neoproterozoic Variations in the C-Isotopic Composition of Seawater: Stratigraphic and Biogeochemical Implications. Precambrian Research, 73: 27-49. https://doi.org/10.1016/0301-9268(94)00070-8
|
|
Lei, C., Yin, S. Y., Ye, J. R., et al., 2021. Characteristics and Deposition Models of the Paleocene Source Rocks in the Lishui Sag, East China Sea Shelf Basin: Evidences from Organic and Inorganic Geochemistry. Journal of Petroleum Science and Engineering, 200: 108342. https://doi.org/10.1016/j.petrol.2021.108342
|
|
Lei, C., Yin, S.Y., Ye, J.R., et al., 2021. Geochemical Characteristics and Hydrocarbon Generation History of Paleocene Source Rocks in Jiaojiang Sag, East China Sea Basin. Earth Science, 46(10): 3575-3587 (in Chinese with English abstract).
|
|
Li, H., Lu, J.L., Li, R.L., et al., 2017. Generation Paleoenvironment and Its Controlling Factors of Lower Cretaceous Lacustrine Hydrocarbon Source Rocks in Changling Depression, South Songliao Basin. Earth Science, 42(10): 1774-1786 (in Chinese with English abstract).
|
|
Li, M.L., Chen, L., Tian, J.C., et al., 2019. Paleoclimate and Paleo-Oxygen Evolution during the Gucheng Period-Early Nantuo Period of Nanhua System in the Zouma Area, West Hubei: Evidence from Elemental Geochemistry of Fine Clastic Rocks. Acta Geologica Sinica, 93(9): 2158-2170 (in Chinese with English abstract).
|
|
Li, Y., Zhang, J. L., Liu, Y., et al., 2019. Organic Geochemistry, Distribution and Hydrocarbon Potential of Source Rocks in the Paleocene, Lishui Sag, East China Sea Shelf Basin. Marine and Petroleum Geology, 107: 382-396. https://doi.org/10.1016/j.marpetgeo.2019.05.025
|
|
Li, Y.H., Xu, X.Y., Zhang, J.F., et al., 2022. Hybrid Sedimentary Conditions of Organic-Rich Shales in Faulted Lacustrine Basin during Volcanic Eruption Episode: A Case Study of Shahezi Formation (K1 sh Fm.), Lishu Faulted Depression, South Songliao Basin. Earth Science, 47(5): 1728-1747 (in Chinese with English abstract).
|
|
Liu, Z.H., Hou, Y.L., Chen, S.H., et al., 2022. Early Cenozoic Sedimentary Characteristics and Provenance Evolution of Lishui Depression, East China Sea. Earth Science, 47(7): 2562-2572 (in Chinese with English abstract).
|
|
Nesbitt, H. W., Young, G. M., 1982. Early Proterozoic Climates and Plate Motions Inferred from Major Element Chemistry of Lutites. Nature, 299(5885): 715-717. https://doi.org/10.1038/299715a0
|
|
Shen, W.L., Qi, B.W., 2020. Definition and Distribution Prediction of Effective Source Rocks in Lishui Sag, East China Sea Basin. Bulletin of Geological Science and Technology, 39(3): 77-88 (in Chinese with English abstract).
|
|
Taylor, S.R., McLennan, S.M., 1985. The Continental Crust: Its Composition and Evolution: An Examination of the Geochemical Record Preserved in Sedimentary Rocks. Journal of Geology, 94(4): 632-633.
|
|
Tian, Y., Ye, J.R., Lei, C., et al., 2016. Development Controlling Factors and Forming Model for Source Rock of Yueguifeng Formation in Lishui-Jiaojiang Sag, the East China Sea Continental Shelf Basin. Earth Science, 41(9): 1561-1571 (in Chinese with English abstract).
|
|
Tribovillard, N., Algeo, T. J., Lyons, T., et al., 2006. Trace Metals as Paleoredox and Paleoproductivity Proxies: An Update. Chemical Geology, 232(1-2): 12-32. https://doi.org/10.1016/j.chemgeo.2006.02.012
|
|
Wang, P.W., Zou, C., Li, X.J., et al., 2021. Geochemical Characteristics of Element Qiongzhusi Group in Dianqianbei Area and Paleoenvironmental Significance. Journal of China University of Petroleum (Edition of Natural Science), 45(2): 51-62 (in Chinese with English abstract).
|
|
Xu, X.T., Shao, L.Y., 2018. Limiting Factors in Utilization of Chemical Index of Alteration of Mudstones to Quantify the Degree of Weathering in Provenance. Journal of Palaeogeography (Chinese Edition), 20(3): 515-522 (in Chinese with English abstract).
|
|
Yu, Z.K., Zhao, H., Diao, H., et al., 2020. Thermal Evolution Modeling and Present Geothermal Field of the Lishui Sag of East China Sea Basin. Marine Geology & Quaternary Geology, 40(2): 124-134 (in Chinese with English abstract).
|
|
Zhang, L.L., Shu, Y., Cai, G.F., et al., 2019. Evolution of Eocene-Oligocene Sedimentary Environment in the Eastern Pearl River Mouth Basin and Its Influence on Hydrocarbon Source Conditions. Acta Petrolei Sinica, 40(S1): 153-165 (in Chinese with English abstract).
|
|
Zhang, N., Wu, Y., Zhang, X., et al., 2021. Geochemical Characteristics and Its Implications of the Third Member of Paleogene Shahejie Formation from the Damintun Sag, Liaohe Depression. Acta Geologica Sinica, 95(2): 517-535 (in Chinese with English abstract).
|
|
Zhu, W. L., Zhong, K., Fu, X. W., et al., 2019. The Formation and Evolution of the East China Sea Shelf Basin: A New View. Earth-Science Reviews, 190: 89-111. https://doi.org/10.1016/j.earscirev.2018.12.009
|
/
| 〈 |
|
〉 |
AI Summary
