A Gorge.ous Earthcache EarthCache
-
Difficulty:
-
-
Terrain:
-
Size: 
(other)
Please note Use of geocaching.com services is subject to the terms and conditions
in our disclaimer.
Please stay on the trail, and be cautious of the steep banks. Be extra careful in high water season. :)
This is an earthcache that takes you to the beautiful natural formation of a rock gorge (and potholes) along McRae creek. It is only a short distance walking downhill along a trail from parking. Be very careful when walking along the steep banks. McRae creek flows down into Christina Lake.
British Columbia is comprised of five morpho-geological belts, which run in vertical sections across the province, each with its own distinct geological make-up. The belts from West to East are; Insular Belt, Coast Belt, Intermontane Belt, Omineca (Chrystalline) Belt, and the Foreland Belt. This area of BC, is part of the Omineca Chrystalline Belt. This region is composed of low to high grade metamorphic rocks, sedimentary rocks, and plutonic (volcanic) rocks.
The formation of a gorge:
Gorges are narrow valleys with steep rock wall sides, made of hard rocks such as granite, limestone, or sandstone.
This gorge is made out of granite. "Gorge" is named after the french word which translates to throat or neck.
Gorges are created by the geological formation of erosion, the continual flow of water and sediment in streams or rivers. This erosion slowly breaks down hard rock layers over millions of years, causing a slow increase in the depth of these rock trenches. This process of carving away rock layers is rapidly increased in springtime when there is a huge increase of water flow joined along with extra soil, rocks, and debris.
To log this earthcache, please answer the following questions, and email me the answers.
1-estimate the depth of this gorge at GZ.
2-there is a unique formation that joins the 2 sides of this gorge, what is it?
3-estimate the length and width of this formation
Additional Hints
(No hints available.)