Feedback between rifting and diapirism can exhume ultrahigh-pressure rocks

▶ Extension occurs at the only actively-exhuming ultra-high-pressure terrane on Earth. ▶ Physical models show that UHP exhumation can occur by rift/diapir feedback. ▶ Model exhumation histories are consistent with observations from the Woodlark Basin. ▶ The diapir/rift feedback effect can constrain diapir size vs. extension rate.