NEW : ` ` Volcanic activity '' increasing in ` ` ' , '' it says . Prehistoric explosions wiped out ocean life -- and created petroleum . The 10,200-foot Mount Redoubt is about 100 miles southwest of Fairbanks , Alaska . Volcano last erupted in December 1989 . Eruption will spawn huge mudflows , disrupt ##ing with ash .
NEW : ` ` Volcanic activity '' increasing in ` ` ' , '' it says . The 10,200-foot Mount Redoubt is about 100 miles southwest of Fairbanks , Alaska . Volcano last erupted in December 1989 . Eruption will spawn huge mudflows , disrupt ##ing with ash .