贝加尔凹陷的新生代历史(英文)

CENOZOIC HISTORY OF BAIKAL DEPRESSION

本文根据地震记录讨论贝加尔凹陷的沉积盖层,作者区分了四个地震综合结构,对它们的分层、厚度变化和构造形态进行了描述。在恢复该凹陷的历史中使用了沉积构造分析。该凹陷经历了二阶段演化。早期(早第三纪一晚第三纪)为同沉积沉降。晚期(第四纪)为塌陷阶段,造成了贝加尔凹陷的现代构造。

Sedimentary cover of the Baikal depression is discussed on the basis of seismic records. Four seismocomplexes have been distinguished, their stratification, variations in thickness, and structural forms described. Analysis of the sedimentary structures has been used in the reconstruction of the history of the depression. It evolved in two stages.The earlier one (Paleogene-Neogene) was characterized by synsedimentary sinking. The later stage (Anthropogene) was marked by collapses, which were responsible for the present structure of the Baikal depression.