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地质科学  1998, Vol. Issue (2): 222-228    DOI:
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拉张盆地构造热演化模拟的影响因素
何丽娟, 熊亮萍, 汪集旸
中国科学院地质研究所 北京 100029
EFFECTS ON THE TECTONOTHERMAL MODELING OF EXTENSIONAL BASINS
He Lijuan, Xiong Liangping, Wang Jiyang
Institute of Geology, Chinese Academy of Sciences, Beijing 100029
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摘要 沉积盆地的热历史与其构造演化史密切相关。拉张盆地构造热演化模拟正是研究盆地在形成演化过程中的热历史及沉降史,它们主要受岩石圈拉张演化特征的控制。本文着重讨论在构造热演化模拟中应考虑的几个重要因素:拉张的多期性、多期拉张过程中岩石圈底界的移动、拉张模式的多样性以及拉张的横向非均匀性。
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何丽娟
熊亮萍
汪集旸
关键词构造热演化模拟   多期拉张   岩石圈底界   拉张模式   横向非均匀性     
Abstract: The thermal history of sedimentary basin relates closely to its tectonic history. The tectonothermal modeling of extensional basins is to study the thermal and subsidence histories in the process of basin extension. The evolution history is mainly controlled by the characteristics of lithosphere extension. In this paper, some effects on the tectonothermal modeling are discussed. 1)Multi-phases stretch: The inheritance of extension embodies not only the structure, but also the temperature field. The unsteady temperature field of earlier extension stage will have great effects on the evolution history of later stage. The thermal history and present thermal state of basin is controlled by comprehensive effects of multi-phases stretch. 2)Lithosphere base: It influences the tectonothermal history of basin greatly. Its selection and variation is worth further study. 3)Stretch mode: Different stretch modes will give different evolution processes. The selection of stretch mode is very important to reconstruct properly the process of evolution. 4)Lateral nonuniformity: The lateral nonuniformity of extension could cause lateral difference of thermal gradient and lateral heat transfer within the basin. In this case, the tectonothermal history of adjacent blocks will influence each other. In one word, tectonothermal model should be developed in the direction of multi-phases, non-instantaneousnesness and nonuniformity.
Key wordsTectonothermal modeling   Multi-phases stretch   Lithosphere base   Stretch mode   Lateral nonuniformity   
收稿日期: 1997-09-04;
引用本文:   
何丽娟,熊亮萍,汪集旸. 1998, 拉张盆地构造热演化模拟的影响因素. 地质科学, (2): 222-228.
He Lijuan,Xiong Liangping,Wang Jiyang. EFFECTS ON THE TECTONOTHERMAL MODELING OF EXTENSIONAL BASINS[J]. Chinese Journal of Geology, 1998, (2): 222-228.
 
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