Sedimentary system

Depositional sequence

Element content

Transgression/Regression

Sedimentary subfacies

First cycle

Secondary cycle

Holocene

Ⅱ

2

High

Transgression

Delta plain facies/Delta-front facies

Low

Local regression

Delta plain facies

1

High

Transgression

Prodelta/Delta-front facies

Low

Regression

Fluvial facies/Weathering period

Late Pleistocene

Ⅰ

2

High

Transgression

Delta plain facies

1

Low

Regression

Fluvial facies