| 中国古近纪构造-地层区划及地层格架 |
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| 引用本文： | 宋博文,张克信,徐亚东,侯亚飞,季军良,骆满生.中国古近纪构造-地层区划及地层格架[J].地球科学,2020,45(12):4352-4369. |
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| 作者姓名： | 宋博文 张克信 徐亚东 侯亚飞 季军良 骆满生 |
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| 作者单位： | 1.中国地质大学地质调查研究院, 湖北武汉 430074 |
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| 基金项目： | 中国地质调查局项目DD20190370国家自然科学基金41702118 |
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| 摘 要： | 古近纪是地球演化进程中最为关键的时段之一，如印度与欧亚板块碰撞和青藏高原初始隆升、太平洋板块向西往欧亚大陆俯冲伴随大规模弧后裂陷、古新世-始新世极热和渐新世初大降温、哺乳动物和被子植物大辐射等，因此，建立中国古近纪构造-地层区划及地层对比格架，是进一步深入研究古近纪时期地球表层岩石圈-水圈-大气圈-生物圈等多圈层耦合演化的基石，意义十分重大.中国古近纪构造-地层区划主要反映古近纪阶段中国范围内的构造-地层的一级和二级单元的划分与各单元内的主要盆地构造背景与分布特征.本次通过对中国古近纪大地构造、沉积盆地(群)、火山岩、隆起带和大型变形构造等的综合研究，共厘定出一级构造-地层单元(大区)10个，二级构造-地层单元27个(区)，包含各类沉积盆地129个.通过对各个地层分区内盆地的盆地类型、构造控制背景、沉积序列及地层接触关系的研究，建立了中国古近纪地层对比格架，并对中国古近纪时期沉积-构造耦合历史进行了系统总结.
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| 关 键 词： | 古近纪 构造-地层区划 地层对比 沉积盆地 中国 |
| 收稿时间： | 2020-03-29 |
Paleogene Tectonic-Stratigraphic Realms and Sedimentary Sequence in China |
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| Abstract: | Paleogene is one of the key intervals in the earth history and a critical period of many biotic and geologic events,including the collision between Indian and Eurasian plates as the resultant formation of the Tibetan plateau,the westward subduction of the Pacific plate beneath Eurasian plate and the accompanying large scale back-arc rifting,the Paleocene-Eocene thermal maximum and Eocene-Oligocene climate transition,and rapid radiation of mammals and angiosperms,etc. Thus,it is of great significance to establish the Paleogene tectonic-stratigraphic divisions and stratigraphic correlation framework in China,which is the cornerstone of further study on the coupling evolution of lithosphere,hydrosphere,atmosphere and biosphere of the earth in the Paleogene. Paleogene tectonic-stratigraphic divisions in China mainly reflects the division of the first and second-order tectonic-stratigraphic units and the tectonic background and distribution characteristics of the main basins in each unit. Through the comprehensive study of Paleogene tectonics,sedimentary basins (groups),volcanic rocks,uplifting belts and large deformation structures in China,10 first-order tectonic-stratigraphic units (super-realms) and 27 second-order tectonic-stratigraphic units (realms) are devised,including 129 basins. Through the research of the types of basins in each unit and their characteristics of tectonic settings,sedimentary sequence and stratigraphic contact,the Paleogene stratigraphic correlation framework in China and summarized the sedimentary-tectonic history is established. |
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