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准噶尔地区的大地构造归属,多年以来就存在着不同的见解,至今仍然分歧很大。争论的实质似乎是准噶尔的基底时代及其性质问题。近年来又有人提出准噶尔地区存在前寒武纪古老基底——中央硬块的见解。笔者根据八二年国家航空物探总队在准噶尔地区获得的成果,对中央坳陷区深部磁异常的性质进行初步研究后认为上述见解是值得商榷的。现将研究结果归纳于后,如有不妥请读者指正。
There have been different opinions over the years in the geotectonic structure of the Junggar region and there are still many divergent opinions. The substance of the controversy seems to be the base time of Jungar and its nature. In recent years, some people have put forward the opinion that there is an ancient Precambrian base in central Junggar. According to the results obtained by the National Aeronautical and Geophysical Corps in Jungar area in 1982, the author of this paper conducted a preliminary study on the properties of deep magnetic anomalies in the central depression and concluded that these opinions are debatable. Now summarized the results of the study, if not correct please readers correct.