Rock Sculpture EarthCache

This cache has been archived.

rainbowtree: DO NOT post a log to this cache.
If you choose to disregard CO's request and log this archived cache, be sure you have the following ...
1. Pics at the required coordinates with you or your signature item as verification of visit.
2. All questions completely/thoughtfully answered.
A special thank you to those who completed all the requirements as requested -and- added the Journeys to your log.

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Hidden : 6/26/2008
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size: other (other)

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Geocache Description:

Permission has been granted by owner to examine these rocks. Kindly do not climb on either of these rocks.

McKean County
Enjoy the wonders that abound within this county.


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 :-) or EMAIL …. Give three specific examples to explain how this rock has been sculpted.
Weathering http://en.wikipedia.org/wiki/Weathering .... Erosion http://en.wikipedia.org/wiki/Erosion

2. MESSAGE :-) or EMAIL …. Give three specific similarities between this roadside rock and the large one behind it. ... NOTE if you use size/shape, include measurements.

3. MESSAGE :-) or EMAIL …. Give three specific differences between this roadside rock and the large one behind it. ... NOTE if you use size/shape, include measurements.

OPTIONAL - Please respect the time and effort involved in finding and creating this earthcache by adding A B C to your log.

A. Post a picture at or near the posted coords. This picture is your log signature verifying that you were at the earthcache.

B. 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.

C. 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 ... prose / story / poem / picture. This is a memorable addition to your log and will make other hearts smile.

THANK YOU rainbowtree for developing this earthcache and allowing me to adopt it.


WEATHERING and EROSION

WEATHERING is the breaking down of rock into smaller fragments. All rock weathers over time. Grains of sediment fall out. Cracks develop on the surface and deep inside. Weathering causes rocks to fracture, buckle, and crumble into soil and sediment. There are two types of weathering - mechanical and chemical.

MECHANICAL WEATHERING breaks apart rocks without changing their chemical composition. Each fragment and particle weathered away by a mechanical process retains the same characteristics as the original rock. Mechanical weathering can be caused by growing plants, expanding ice, lightning, and expansion and contraction with heating and cooling. These physical processes create enough force to break rocks into smaller pieces.
Biological Weathering - Frost disintegration - Hydraulic action - Pressure release - Salt-crystal growth (haloclasty) - Thermal expansion

CHEMICAL WEATHERING occurs when water, air, and other substances react with the minerals in rock. In chemical weathering, the composition of the rock changes.
Biological - Carbonation – Dissolution – Hydration – Hydrolysis - Oxidation

EROSION is the movement of weathered materials by water, wind, ice, and gravity.
Gravity erosion - Ice erosion - Shoreline erosion - Water erosion - Wind erosion

ROCK SCULPTURE

Rocks are continually sculpted by Earth Mother's chisels .... wind and water. This results in rocks of varied size and form. I notice this unique rock each time I travel past it along Route 646.

This rock has been weathered by the action of wind and water. We live in the temperate climate zone and experience seasonal variations. The warm temperatures lead to heating and expansion of rock particles. The cold temperatures lead to cooling and contraction of rock particles. Winds also bombard the rock causing abrasion and removal of particles. The result is depressions and holes in the rock of varied size and depth. Water enters these depressions, freezes, and expands, thus causing additional changes within this rock. Plants have also taken hold and are increasing the weathering process of this rock.

This rock has been eroded. The particles removed from it have been transported elsewhere, as evidenced by lack of the weathered particles seen anywhere near the rock.

There is another large rock behind this one. Each rock has a similar composition, relative location, and exposure to the elements, yet they are different in both size and shape.



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