| 华北北部侏罗—白垩过渡期陆相红层及其古地理、古生态和构造演化 |
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| 关键词:Northern North China Jurassic–Cretaceous transition Terrestrial red beds Basin Tectonic setting |
| 基金项目:中国地质调查局项目(编号: 12120115068901; 1212011120142; 12120114064301)、国家自然科学基金项目(编号: 41372109; 90914003)和国家科技部基础工作专项(编号: 2015FY310100) |
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| Jurassic–Cretaceous Transition Terrestrial Red Beds in Northern North China and Their Regional Paleogeography, Paleoecology, and Tectonic Evolution |
| Mesozoic is an important period in the Earth history, especially for the Late Mesozoic, abundant essential geological events took place, such as the breakup of Pangea, the expansions of the Atlantic Ocean, the destruction of North China Craton, the collision of India and Eurasian plate, and the uplift of Tibet Plateau. These events have been a focus for the present geoscientists. In the recent years, the destruc-tion of North China Craton attracts great attention. It is not only characterized by the delamination of lith-osphere and physical-chemical changes of lithospheric mantle, but also plays important role in paleogeogra-phy, paleoenvironment and paleoecology on crustal surface. At present, although lots of studies indicate that the peak period of destruction of North China Craton is about 130 Ma, the tectonic background and dynamic mechanism of the craton in the pre-130 Ma is hotly debated, especially for the Late Jurassic-Early Cretaceous. Moreover, two important terrestrial biotas developed in Northeast Asia in the Late Mesozoic: the Yanliao Biota (165–152 Ma) and Jehol Biota (140–120 Ma). Both biotas include a large number of exceptionally well-preserved feathered no-avian di-nosaurs, mammals, pterosaurs, fish, and insects, which indicate the particular terrestrial ecosystem and biodiversity in the age of the dinosaurs. However, due to the lack of animal and plant fossils within Juras-sic–Cretaceous transition strata, it is unclear about the transitional relationship of the two biotas and its re-sponse to the paleogeography and paleoenvironment of the North China Craton during the Juras-sic–Cretaceous transition. Therefore, focusing on the Jurassic–Cretaceous transition sedimentary strata and basins in northern North China Craton and adjacent region is essential for the study of North China Craton, paleogeography, paleoenvironment and biotic transi-tion. |
| XU Huan,LIU Yong-qing.2017.Jurassic–Cretaceous Transition Terrestrial Red Beds in Northern North China and Their Regional Paleogeography, Paleoecology, and Tectonic Evolution[J].Acta Geoscientica Sinica,38(s1):25-28. |
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