摘要
响水至满都拉地学断面全长1200km,由东南向西北斜跨中朝板块及其古大陆边缘,穿过苏北-胶南地体,鲁西块体、华北裂谷盆地、太行-五台块体、鄂尔多斯块体,呼和浩特-包头盆地、阴山块体和内蒙褶皱系等8个构造单元。在综合研究现有地质、地球化学和地球物理资料的基础上,按照全球地学断面(GGT)编图指南的统一要求,进行研究并编成展示图。揭示了中朝板块克拉通化的过程及其与古大陆边缘过渡带的关系,以及后期遭受改造产生的板内构造和板内动力学特征。
The Xiangshui to Mandal geoscience transect with its three segments extends from the Yellow Sea shore in the southeast to the Mongolian plateau diagonally through the Sino-Korean plate and its ancient continental margin, it has a length of 1200 km. The main tectonic units crossed are the Subei-Jiaonan terrane, western Shandong block, North China rift basin, Taihang-Wutai block, Ordos block, Hu-Bao basin, Yinshan block and Inner Mongolian fold system. These units record the evolution of the continental crust over the last 2.8 billion years. and contain evidence for diverse tectonic styies and tectonic processes; i.e., they reflect the cratonization and subsequent reworking of the Sino-Korean plate, particularly the features of intraplate structures and intraplate dynamics.
The display sheet of the transect has been compiled according to the Guidelines for the Global Geoscience Transect (GGT) Project, based on the comprehensive studies of the available regional geological, geochemical and geo physical data As the composition and structure of the continental crust and lithosphere are laterally very inhomogeneous, their natures are to a large extent dependent upon their tectonic environments and the processes by which they were formed and modified. Therefore the problem of the nature of the upper, middle and lower layers of the crust is approached from a tectonic standpoint and interpretated in terms of varying models of deformation. The understanding of the nature of the geological structures at deep crustal levels depends largely on interpretation of geophysical and geochemical data. Projection of surface geological structures to depth may also be guided by them.
出处
《地质学报》
EI
CAS
CSCD
北大核心
1991年第3期199-215,共17页
Acta Geologica Sinica
