EARTHCACHE REQUIREMENTS
Each cacher must send his/her own answers BEFORE logging a find. Enjoy the journey (learning adventure) as well as the destination (smiley earned). Remember to take only pictures and leave only footprints. To get credit for this Earthcache, complete the following tasks:
1. MESSAGE …. a. Is this a Rockfall or a Rockslide or a Rock Avalanche area? ... b. Going NE, is the danger from the left side or the right side?
2. MESSAGE …. Even though the road cuts through the mountain, the two sides are significantly different. Give two differences. These show the measures taken to prevent damage.
3. LOG …. Post a picture at or near the coordinates. This picture is your log signature.
OPTIONAL - Please respect the time and effort involved in creating this earthcache by adding A and B to your log.
A. JOURNEY OF THE MIND ... Science explains what we observe. Relate (in your own words) something you found interesting in the reading. This adds to your learning adventure and your log.
B. JOURNEY OF THE HEART ... Art shares our personal experience of what we see. Share something special you found on site, and why it is special to you. This is a memorable addition to your log and will make other hearts smile.
Journeys of Heart and Mind ...
Stories to Touch the Heart and Puzzles to Challenge the Mind / Rainbow Tree Story
TYPES OF LANDSLIDE MOVEMENT
https://pubs.usgs.gov/fs/2004/3072/fs-2004-3072.html
ROCKFALL
Rocks free fall from a cliff or steep mountainside. The velocities ( 5 km/hour high speed) are fast, but the travel distances are short. Weathering weakens the bedrock along joints until the slightest pressure, often exerted by the expansion of water as it freezes in a crack, is enough to trigger the rockfall.
ROCKSLIDE
Rocks slide down a slope, forming rockslides. The velocities (1 km/hour) are slower because masses of bedrock slide as a unit along joint planes.
ROCK AVALANCHE
Rock avalanches happen when a large volume of stone loosens from a mountainside. They occur on steep, unstable mountainsides. Similar to a snow avalanche, they pick up speed on their downward movement causing destruction in their path.
RESOURCES
https://www.quora.com/What-is-the-difference-between-rock-fall-and-rock-slide
https://pubs.usgs.gov/fs/2004/3072/fs-2004-3072.html