The LST of the lacust rine is absent and/ or lack , but the t ransgressive system t ract ( TST) and/ or highstand system t ract (HST) deposited in the lake level rise are best of all development .

• 而在湖泊层序中，低位域缺失或发育较差，湖进域或高位域的水面上升期沉积占优；