【摘要】 深地震反射剖面方法是目前探测地壳结构最为精细的方法之一.在大量的深地震反射调查工作中,科学家们发现了地壳内部存在很多具有异常高振幅特征的"亮点"反射.与以往石油勘探中能够反映油气聚集的"亮点"反射不同的是,这些深地震反射的"亮点"构造通常位于中地壳尺度,其成因往往与板块俯冲、地壳增厚等地质事件有关.本文根据公开发表的文献,总结了的全球大陆范围内深地震反射剖面上的"亮点"构造分布,阐述了"亮点"反射的几种主要成因.并就我国青藏高原内部发现的"深反射亮点"进行了对比,建议了进一步的研究方向.更多还原

【Abstract】 Deep seismic reflection profiling is one of the finest methods to probe the crustal structure.By a lot of deep seismic reflection survey,the scientists found that there are many"bright spots" with unusually high amplitude reflection characteristics in the crust.There are different from the"bright spots"reflecting the hydrocarbon accumulation in oil exploration.The "deep reflection bright spots"are usually located in the crustal scale structures,which often are related to subduction,crustal thickening and other geological events.In this article,based on publicly reported in the literature,we sum up the global distribution of the"bright spots"on deep seismic reflection profiles,describe several causes of deep seismic reflection"bright spots."Moreover,we compare"deep reflection bright spots"in the Tibetan Plateau and suggest the direction for further research.更多还原