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September 19, 2025Geological Society of America Bulletin

Fluid inclusions and in situ U-Pb dating constraints on hydrocarbon accumulation in the Ordovician strata of the Ordos Basin, China

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Authors

HDHao DuYLYifeng LiuXLXiaorong Luo

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Overview

Analysis of U-Pb dating reveals hydrocarbon generation stages in Ordovician strata, implicating Paleozoic tectonic events.

Key Points

  • Hydrocarbon generation stage was identified in the Ordovician strata during the Caledonian Orogeny, indicating a critical timing.
  • Analysis shows significant uplift occurred during the Late Silurian to Early Carboniferous, affecting hydrocarbon generation and accumulation.
  • Mesozoic subsidence led to increased temperatures and salinity within the Ordovician strata, supporting secondary hydrocarbon activities.
  • Gas accumulation in the Late Triassic was likely sourced from the overlying Carboniferous-Permian source rocks, influencing reservoir dynamics.

Cite This Study

Du et al. (2025) studied this question.

synapsesocial.com/papers/68d464ea31b076d99fa640d9https://doi.org/10.1130/b38246.1
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