GC1TVBZ Pillars of Rome (Earthcache) in Oregon, United States created by TEAM KREDUN

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GC1TVBZ ▼

A cache by TEAM KREDUN Message this owner

Hidden : 6/17/2009

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Terrain:

Size: Size: other (other)

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Stay on public road. All observances can be done here.

The pillars of Rome are a mix of stream and lake deposits and airfall and possibly ash-flow tuff. The pillars are a mix of different sediments that have been hardened by zeolite mineralization. I have included a link to a pdf file that has more detailed information on the zeolite mineralization. The Rome zeolite deposits contain appreciable amounts of fluorite and are one of the best known localities for the fibrous zeolite erionite. http://www.oregongeology.org/pubs/OG/OGv49n01.pdf It is uncertain where the volcanic material came from. There is an ashflow exposed along the Owyhee River further north that came from the Burns area (Devine Canyon). Some of the material probably came from there, additional material probably came from eastern Idaho. It is not know to me how long it took for the deposits to be laid down. At a guess, over a several million year long time span centered on about 10 million years B.P. Present day landforms largely result from about 2 million years worth of erosion by the Owyhee River. Suspect that the major downcutting began when ancient Lake Idaho began to empty out through Hells Canyon. . These pillars were so high, they were used as landmarks for frontier travelers. To log this cache, please email me the following answers: 1. Why are these formations named "Pillars of Rome?" 2. How far away (approximately) is the river that carved these pillars? 3. What colors did you see in the layers of the pillars? 4. Share your pics of you/your group at this magnificent site.

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Pillars of Rome EarthCache

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