不同时空分布的幔源物质对比在研究华北克拉通破坏及加厚过程的意义  

The significance of the comparison of mantle derived materials with different temporal and spatial distribution in the study of the damage and thickening process of North China

作　　者：白一清 

机构地区：[1]山西省煤炭地质144勘查院,山西洪洞041600

出　　处：《山东煤炭科技》2017年第1期165-167,共3页Shandong Coal Science and Technology

摘　　要：岩石圈变薄总是伴随着软流圈的上涌,它将导致上层中一系列的构造-熔融-沉积-盆地事件的发生(比如地壳)。因此,公认的变薄过程的开始时间为中生代-新生代间的三叠纪及侏罗纪-早白垩纪或者晚白垩-新生代。岩石圈变薄的范围不能很容易确定,只在华北或中国东部全部范围,并且只发生在岩石圈的地幔或地壳低部。Lithospheric thinning is always incidental with asthenospheric upwelling, which will cause a series of tectonic-magma-deposit-basin events in upper layers （e.g. crust）. Therefore, the initiation time of the thinning process has been considered as Mesozoic-Cenozoic, Triassic, late Jurassic-early Cretaceous or late Cretaceous-Cenozoic. The range of lithospheric thinning is not very well constrained, only within the North China or the full area of the East China, and only in the lithospheric mantle or which referred to lower crust.

关 键 词：克拉通破坏 华北 不同时空分布 

分 类 号：P542[天文地球—构造地质学]