| Yonaguni Knoll IV | |
|---|---|
  Location in Okinawa Trough | |
| Summit depth | 745 metres (2,444 ft) |
| Location | |
| Location | Okinawa Trough, east of Taiwan |
| Coordinates | 24°54′N 122°48′E / 24.900°N 122.800°E[1] |
Yonaguni Knoll IV is a seamount in the Okinawa Trough, east of Taiwan. It lies at about 745 metres (2,444 ft) depth and formed through Quaternary volcanism that yielded dacitic and rhyolitic magmas. The seamount is hydrothermally active, with numerous sites that are colonized by mussels and other marine animals. A submarine underground "lake" of liquid carbon dioxide has been identified at Yonaguni Knoll IV.
- ^ Wu et al. 2019, p. 2.