megasequence meaning in Chinese

巨层序

It is suggested that the upper paleozoic is a megasequence . the carboniferous and the permian are two mesosequences and can be divided into 5 sequence sets and 16 sequences
确定上古生界为1个大层序，石炭、二叠系为2个中层序，并对研究层段依次划分了5个三级层序组和16个三级层序。
On the basis of a comprehensive study of the outcrop , core , well log and seismic data , taking the high resolution sequence stratigraphic theory as a direction , the tertiary sequence stratigraphic system was firstly established in hong - shi area in qaidam basin , which consists of 42 sequences , 12 supersequences , 3 supersequence sets and 1 megasequence
首次在区内第三系中建立了以三级层序为基本单元的层序地层系统，其中包括42个三级层序、 12个超层序、 3个超层序组和1个一级巨层序。