Hydrocarbons are found in source rocks spanning a wide geological age range
Hydrocarbons are generated in source rocks across a broad spectrum of geological ages, ranging from the Paleozoic through the Mesozoic and Cenozoic.
The retrieved literature provides numerous examples of petroleum and gas source rocks spanning diverse geological periods, including the Silurian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, and Paleogene. This clearly supports the claim that hydrocarbons are found in source rocks across a wide geological age range.
Yuming Liu, Xuesong Lu, Mengjun Zhao, Q. Zhuo, L. Gui. Hydrocarbon Generation and Accumulation in the South Junggar Basin, Northwest China: Insights From Basin Modeling. 2022. https://doi.org/10.3389/feart.2022.920011
Identifies multiple source rock intervals spanning the Permian, Jurassic, Cretaceous, and Paleogene in the South Junggar Basin.
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Shangguan J, Su K, Huang J, Sun Y, Xu Y, Li J. Oil-Source Correlation in the Ordovician and Carboniferous Strata from the Southwestern Ordos Basin (China): Implications for a Multivariate Statistical Approach.. 2026. https://doi.org/10.1021/acsomega.5c12336
Discusses source rocks ranging from the Carboniferous to the Ordovician in the Ordos Basin.
Peng Q, Du B, Yue M, Peng J, Li P, Liu Z, Liu H, Liu X. Characteristics of the Coal-Associated Shale and Its Paleoenvironmental Analysis of the Upper Triassic Tumengela Formation in the Central Part of the Qiangtang Basin.. 2026. https://doi.org/10.1021/acsomega.5c11519
Examines Upper Triassic coal-associated shales acting as source rocks in the Qiangtang Basin.
Yong J, Chen S, Hu S, Liu Z, Zheng M, Zhang T. Geological conditions for shale gas accumulation and favorable zone evaluation in the Longmaxi formation of the Yanyuan Basin.. 2025. https://doi.org/10.1038/s41598-025-28053-y
Analyzes Lower Silurian source rocks in the Yanyuan Basin, demonstrating hydrocarbons in older geological formations.
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