The sedimentary systems in the T-R cycle: fluvial fan, fan delta, common delta and lacustrine sedimentary system.

识别出扇三角洲、远（近）源三角洲、水下扇及浅湖、深湖-半深湖等沉积体系。

youdao

In vertical, from E31 to E32, it changes from braided river delta to a shallow lake facies, thus, formed a cycle which lithologic character is rough at bottom.

在纵向上，从E31 - E32，从下向上由辫状河三角洲相变为浅湖相，构成了一正旋回沉积。

youdao

"But if you look into the Mekong delta, for example in Vietnam, it has shown the 30-year cycle, but the phase and amplitude is going up and then going up like that."

VOA: standard.2009.12.21