Effect of Sea-Level Change on Deep-Sea Sedimentary Records in the Northeastern South China Sea over the past 42 kyr

Figure 9

Schematic cartoons showing the terrigenous input, organic carbon burial, redox condition in the water-sediment interface, and ocean productivity at core 973-4 located in the northeastern SCS at the (a) interstadial phase during the last glaciation with low sea level (stage I), (b) period of glaciation with the lowest sea level (stage II), and (c) Holocene in sea-level highstand with warm and humid climate (stage IV), with the exception of the stage III influenced by the turbidity current. The size of shallow green arrows indicates the flux of terrigenous input. Core 973-4 is labeled as a red pillar. The ocean productivity in the surface water is expressed by bottle green circles, and higher productivity as indicated by more circles represents the enhanced biogenic CaCO₃ input to deep sea and the seafloor. Dashed area with color from blue to white represents dissolved O₂ content from low to high in the ocean documented by the phase of manganese.

(a)

(b)

(c)