Lithospheric‐folding‐based understanding on the origin of the back‐arc basaltic magmatism beneath Jeju volcanic island

A novel hypothesis proposes that basaltic magmatism beneath Jeju Volcanic Island arises from lithospheric folding near collisional plate boundaries, challenging the conventional view requiring extended lithosphere. This process involves pressure reduction beneath fold ridges, facilitating magma generation without extension. The study investigates subsurface structures around Jeju and its vicinity to support this alternative mechanism, offering a new framework for understanding back-arc magmatism.

Shin, Y. H., Choi, K. S., Koh, J.-S., Yun, S.-H., Nakamura, E., & Na, S.-H. (2012). Lithospheric‐folding‐based understanding on the origin of the back‐arc basaltic magmatism beneath Jeju volcanic island. Tectonics, 31(4). Portico. https://doi.org/10.1029/2011tc003092