| 花海拗陷的热演化和生烃期的磷灰石裂变径迹证据 |
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| 关键词:apatite fission track thermal history modeling paleotemperature timing of hydrocarbon generation |
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| Thermal Evolution and Timing of Hydrogen Generation in the Huahai Basin: Evidence from Apatite Fission Track Data |
| Apatite fission track analysis was carried out to study the thermal evolution and timing of hydrogen generation in the Huahai Basin. Fission track ages and lengths of apatite samples from the Huashen-1 well both decrease with increasing well depths. Apatite fission track ages of the samples from the Cretaceous system are all much younger than their stratigraphic ages, suggesting that the strata were heated to higher paleotemperature after deposition. Inverse modeling based on Monte Carlo random sampling was used to reconstruct the temperature-time history. The results show that the Cretaceous strata in the basin experienced maximum paleotemperatures of 110～120 ℃, which were attained during the Cretaceous Period; subsquent cooling took place in Mesozoic;the maturity of source rock was mainly controlled by the paleotemperature, and the timing of hydrogen generation was before 80～100 Ma. |
| WANG Shi-cheng,YUAN Wan-ming,WANG Lan-fen,REN Zhan-li.1999.Thermal Evolution and Timing of Hydrogen Generation in the Huahai Basin: Evidence from Apatite Fission Track Data[J].Acta Geoscientica Sinica,20(4):428-432. |
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