 Activity subsequently shifted to the present Yellowstone Plateau and culminated 630,000 years ago with the eruption of the Lava Creek Tuff and the formation of the present caldera.Resurgent doming then occurred at both the NE and SW sides of the caldera and voluminous intracaldera rhyolitic lava flows were erupted between 150,000 and 70,000 years ago.Phreatic eruptions produced local tephras during the early Holocene.