Please be careful of traffic on S.R. 16, Now look South/South West and you will see two landslides.
There are 4 kinds of landslides:1- Debris slide 2- Earth flow 3-Slump 4-Rock slide.
Most landslides start with a curving fracture in the ground then water gets down and under the soil. Then more cracks at the top of the slope form. It may start with a few little slides and then all of it or all of it at once. Most slides hang precariously on the slope until something triggers them into catastrophic movement. It could be earthquake, heavy rain, sonic boom or a combination of all. Whether they move slowly, catastrophically, slides typically leave a curving scar in the fracture surface on the hillside where it started. And they land as a hummocky dump of debris somewhere below.
DEBRIS-SLIDE. : a mass of predominantly unconsolidated and incoherent soil and rock fragments that has slid or rolled rapidly down a steep slope when comparatively dry to form an irregular hummocky deposit EARTH FLOW: A downslope viscous flow of fine-grained materials that have been saturated with water, and moves under the pull of gravity. They are an intermediate type of mass wasting that is between downhill creep and mudflow. The types of materials that are susceptible to earthflows are clay, fine sand and silt, and fine-grained pyroclastic material. SLUMP: A form of mass wasting that occurs when a coherent mass of loosely consolidated materials or rock layers moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. Causes of slumping include earthquake shocks, thorough wetting, freezing and thawing, undercutting, and loading of a slope ROCKSLIDE: A type of landslide caused by rock failure in which part of the bedding plane of failure passes through intact rock and material collapses en masse and not in individual blocks. While a landslide occurs when loose dirt or sediment falls down a slope, a rockslide occurs only when solid rocks are transported down slope. The rocks tumble downhill, loosening other rocks on their way and smashing everything in their path
Now try to imagine what this place looked like a million years ago.
To log this cache do the following:
1. E-mail the following answers to us, Please include the GC and how many people you are caching with. (name would be nice too)
2. Which kind of landslide do you see across the highway?
3. After looking at this area tell me about a couple of things that you think has changed significantly over the last 50-100 years.
4.Name something in this area that you think has not changed in the last 50-100years
5. Post a picture at GZ we would love to see you in the beautiful Capay Valley