John Day Fossil Beds National Monument U S Nationwide Park Service
Table of Content Flora Map This On The Oregon Historical Past Wayfinder Associated Historic Information Choose Allgeneral Curiosity Guides Geology And Paleontology Suggestions For Visiting John Day Fossil Beds The Clarno Unit, close to the John Day River’s Clarno Bridge, includes huge volcanic particles flows and lahars which may be 45 to 50 million years in age. Leaves and entire bushes, discovered as petrified remnants, report a subtropical ecosystem just like that present in modern Costa Rica or Veracruz, Mexico. Early ancestral bananas, figs, palms, and bald cypress flourished amid a volcanic landscape. Rainfall totaled about eighty inches per year, and atmospheric carbon dioxide was a lot larger than today’s ranges. This unit is generally in Grant County; a small half extends into Wheeler County. The Sheep Rock Unit is further subdivided into the Mascall Formation Overlook, Picture Gorge, the James Cant Ranch Historic District, Cathedral Rock, Blue Basin, and the Foree Are...