摘要
本文简要地讨论了大别 苏鲁超高压变质带大陆科学钻探选址新采集的地球物理调查剖面及相关地球物理成果。这些剖面以深反射地震及大地电磁测量为研究岩石圈构造的主要方法 ,结合地质资料和区域重磁平面图 ,分析大别 苏鲁地体的深部地质构造与岩石圈主要特征 ,以及大陆科学钻探靶区选择的地质地球物理依据。同时讨论了大陆科学钻探的靶区 (江苏东海县 )的地壳构造与地热研究结果 ,并将深度偏移地震剖面与先导孔岩心钻探结果进行了对比
Geophysical investigations have been carried out since 1996 for site-selection of Chinese Continental Scientific Drilling Project (CCSDP). The surveys mainly include deep seismic reflection and MT together with gravity and magnetic data, and the results are presented in this paper. An integrated interpretation of the geophysical data reveals crustal structures and main characteristics of the Dabie Sulu lithosphere. Good evidence for selecting the drilling site in Donghai County of southern Sulu is explained. Crustal structures and geothermal measurements around the drilling site are also discussed, with a comparison between the depth migrated seismic profile and core petrology at the CCSD pilot hole.