The Cerro Chopo basaltic cone (Costa Rica): An unusual ...
The Cerro Chopo basaltic cone (Costa Rica): An unusual completely reversed graded pyroclastic cone with abundant low vesiculated cannonball juvenile fragments article{Alvarado2011TheCC, title={The Cerro Chopo basaltic cone (Costa Rica): An unusual completely reversed graded pyroclastic cone with abundant low vesiculated cannonball juvenile fragments}, .