Hoodoos or Stacks? EarthCache
Hidden : 6/30/2012
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:


At this nice little turnout along Highway 22, beyond the fenceline, there are interesting geological formations. Thousand years of erosion by wind and water have created these rock pillars but are they hoodoos or are they stacks?

The formations themselves are on private property so you cannot approach them but you can get a great view from the pullout. Please stay on the public side of the fence.

A small section of Paskapoo Formation sandstone, which dates back to the Early Tertiary (Paleocene), is exposed as a road cut out along the highway north of the coordinates for the earthcache. If you want to get a closer look at the type of rock that forms these geological formations, refer to additional waypoints. A natural outcrop of the Paskapoo occurs around the bend on private property.

When there are different strengths of sedimentary rock such as sandstone, conglomerate or limestone, and a harder or more competent rock sits above a softer, less competent rock, the erosive forces of wind and water wear away the underlying rock much faster than the overlying rock or “cap rock”. The “cap rock” works like an umbrella to protect the soft rock below, creating a hoodoo.


A stack is a geological landform consisting of steep and often vertical columns of rock that have become isolated by erosion. The rock is typically sedimentary, volcanic or limestone and erosion is primarily in the form of water erosion, starting with a crack in the rock, continuing to form a cave, then an arch and as the arch collapses a stack is left standing alone.

To log this cache:

In order to log this cache, you must do the following:
1. Email the cache owner with the average height of the formations.

2. Based on your observations and what you have learned, email the cache owner and state whether you would refer to the formations as hoodoos or stacks?

3. Finally, give at least one reason why you decided to call them what you did.
A photo of you at the cache site is always appreciated but no longer a requirement to log an earthcache! Remember to email your answers and not put them in your log. That would spoil the fun for others.


GeoWyrm_Cache_w200px

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