BSH - Memorials and Monuments 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This cache has been archived.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.
Location and content gifted to a special cacher for development of a new EarthCache.

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Hidden : 2/27/2016
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size: other (other)

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Geocache Description:


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:

Visit the two memorials. Both bases are made of granite and contain feldspar crystals.
POSTED COORDS - John Frederic Hartranft Memorial
N 40° 15.722 W 076° 52.930 - Boies Penrose Memorial

1. MESSAGE …. Compare the size of the feldspar crystals at both locations. Use comparative terms like small or large.

2. MESSAGE …. Based on the size of the crystals, which granite rock (red or gray) was located deeper within the earth and cooled more slowly?

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 finding and 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.

NOTE: Suggested visit to these earthcaches is on Sundays when there is no charge to park. Otherwise, see http://parkharrisburg.com/ for parking fees.

BUILDING STONES - HARRISBURG PENNSYLVANIA
Enjoy your journey observing the large variety of stone types
used in the construction of churches, buildings, monuments, and statues.


BUILDING STONES - Building stones are selected based on the following:
COLOR
A function of the individual colors of the minerals which make up the rock.
TEXTURE - Geologist Definitions
Fine - crystals too small to see, even with a lens .... Medium - crystals visible, but need a lens to identify them .... Coarse - crystals easily seen with naked eye
TEXTURE - Building Industry Definitions
Determined by the size, arrangement, and bonding of the mineral grains within the rock.
Natural - cut along lines of cleavage revealing natural grain giving an undulating surface .... Honed - smooth finish with a slight sheen .... Polished - shine on stone surface .... Flamed - rough surface with an irregular textured finish .... Sand Blasted - textured surface with a matte gloss .... Sawn - semi-smooth, regular finish .... Bush Hammered - pitted or grooved surface finish
DURABILITY
Based on the texture and porosity of a rock. A durable building stone is one which resists the weathering elements in the atmosphere without suffering decay in some way. The main causes of stone decay are Frost / Salt crystallization / Acid deposition.
ACCESSIBILITY
Relatively easy to quarry.

COOLING RATE AND CRYSTAL SIZE

The size of crystals in an igneous rock is an indicator of the conditions where the rock formed. An igneous rock with large crystals probably indicates that the rock formed deep within the Earth where it cooled slowly giving time for crystals to grow. An igneous rock with small crystals probably indicates that the rock formed close to the surface where it cooled rapidly and did not allow time for crystals to grow very big. Some magma cools so quickly that no crystals form.

FELDSPAR

Feldspar is the most common mineral on Earth, constituting approximately 60% of the crust. It forms directly from cooling magma and is a major component of granite and most other igneous rocks. Feldspars vary in color from pink to gray.

MEMORIALS AND MONUMENTS

JOHN FREDERIC HARTRANFT MEMORIAL
Red granite - Feldspar crystals

BOIES PENROSE MEMORIAL
Light-gray granite - Feldspar crystals

RESOURCE - Building Stones of Pennsylvania's Capital Area by Alan R. Geyer EG_005.zip - Pennsylvania Department of Conservation

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