Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Mitchell in Wheeler County, Oregon — The American West (Northwest)
 

Deciphering the Forest

 
 
Deciphering the Forest Marker image. Click for full size.
By Duane Hall, September 9, 2010
1. Deciphering the Forest Marker
Inscription. Volcanic ash can be gentle and fine enough to preserve a leaf’s structure in great detail. Nearby 34 million-year-old “Bridge Creek Flora” fossils reveal many species of an ancient, hardwood forest. This forest had a blend of trees found today only in parts of the Appalachians, Chine, and spots along the Pacific Coast.

Fossils indicate that some type of trees changed little during the Age of Mammals. From that evidence and comparisons to modern trees and their settings, we have learned a great deal about past ecosystems and climates.

About thirty million years ago there was a period of significant global change. As the air cooled and the seasons became more pronounced, the earlier near-tropical plants of the area retreated southward. Many hardwoods and conifers replaced them, as did a whole new set of forest creatures.
 
Erected by National Park Service.
 
Location. 44° 38.992′ N, 120° 16′ W. Marker is near Mitchell, Oregon, in Wheeler County. Marker can be reached from Bear Creek Road 1.2 miles west of Bridge Creek - Burnt Ranch Road. Click for map. Marker is located in the Painted Hills Unit of John Day Fossil Beds National Monument at the end of the road to the Painted
Painted Hills image. Click for full size.
By Duane Hall, September 9, 2010
2. Painted Hills
View from marker
Hills Overlook parking lot and trailhead; the above directions are to the intersection of Bear Creek Road and the Painted Hills Overlook road. Marker is in this post office area: Mitchell OR 97750, United States of America.
 
Other nearby markers. At least 5 other markers are within walking distance of this marker. A Matter of Survival (here, next to this marker); Pieces of the Puzzle (here, next to this marker); Painted Hills Overlook (here, next to this marker); Fossils on the Frontier (approx. 0.8 miles away); Look Below the Surface (approx. 0.8 miles away).
 
Also see . . .  Painted Hills. From the Mitchell, Oregon website. (Submitted on February 12, 2014.) 
 
Categories. Natural Features
 
View from Painted Hills Overlook Trail image. Click for full size.
By Duane Hall, September 9, 2010
3. View from Painted Hills Overlook Trail
The black hash marks are rich in manganese
View from Painted Hills Overlook Trail image. Click for full size.
By Duane Hall, September 9, 2010
4. View from Painted Hills Overlook Trail
The red layer is from iron minerals oxidized by long exposure
 
 
Credits. This page originally submitted on , by Duane Hall of Abilene, Texas. This page has been viewed 308 times since then and 17 times this year. Photos:   1, 2, 3, 4. submitted on , by Duane Hall of Abilene, Texas. This page was last revised on June 16, 2016.
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