摘要
根据地质和地球物理特征表现出的岩石圈不连续 ,华北地区可区分出鄂尔多斯克拉通型、燕山太行造山带型和华北平原裂谷型三类岩石圈。依据岩石学方法、壳幔演化模型、造山带形成过程以及地震波速与岩石化学成分之间的关系 ,建立了华北地区三类型岩石圈的壳幔岩石学结构和化学结构 ,讨论了不同岩石圈类型的壳幔物质结构、地壳和岩石圈地幔厚度的地质含义、岩石圈不连续在划分岩石圈单元中的作用及不同类型岩石圈形成的大陆动力学意义。
Based on lithosphere discontinuity revealed by geological and geophysical characteristics of North China, the authors recognized three kinds of lithospheres in North China region, they are cratonic type lithosphere in Odros, orogenic type lithosphere in Yanshan-Taihang and rift type lithosphere in North China plain. According to petrological means, crust-mantle evolution models, the process of orogenic belt formation, and the relationship between seismic velocity and petrochemical composition, this paper has set up the crust-mantle petrological and petrochemical lithospheric structures of craton, orogenic and rift types in North China. Some important problems are also discussed in this paper, such as the geological implications of the crust-mantle structures and the thicknesses of crust and subcontinental lithospheric mantle in different types of lithospheres, the role of lithospheric discontinuities in the classification of the lithospheric units, and the continental dynamic significance of the formation of different types of lithospheres.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2004年第2期127-140,共14页
Acta Petrologica et Mineralogica
基金
国土资源部科技专项计划资助项目(200010103&20001010202)
中国地质调查局资助项目(K1.4_1_2&200113900018)
国家自然科学基金重点资助项目(NSFC402344048)
科技部IGCP国际合作资助项目(2001cb711002)
中国地质大学岩石圈构造
深部过程及探测技术教育部重点实验
关键词
岩石圈类型
壳幔岩石学结构与化学结构
地质解释
大陆动力学意义
华北地区
lithosphere type
crust-mantle petrological and petrochemical structure
geological explanation, continental dynamic implication
North China
