1·The Cenozoic era is composed of tertiary period followed by quaternary period.
新生代是由第三纪和第四纪组成的。
2·The west branch fault has been of strongly active since the Quaternary period and its activity is of difference at different segements.
西支断裂第四纪以来活动强烈且具明显的差异性，东支断裂从晚第三纪末起已停止活动。