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EarthCache

Roccia dell'Elefante 🐘

A cache by jeff499 Send Message to Owner Message this owner
Hidden : 5/24/2010
Difficulty:
1.5 out of 5
Terrain:
1 out of 5

Size: Size: other (other)

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Geocache Description:


The "Roccia dell'Elefante" (elephant rock) is a popular sight near Castelsardo.

 

The Roccia dell'Elefante consists of trachyte, a feldspar-rich rock, which developed in a melt at the roof of a basal magma chamber. If you have a close look you can see the porphyritic crystals and in smaller imperfect rods or laths of the feldspar. In fresh condition trachyte is mid-grey, during decomposition it bleaches out and becomes brighter. The trachyte flow not out as lava, but a stiff melt plug was pushed upward. What you can see today is the remains of such a melt plug formed by wind and weather to its remarkable form.

In the Bronze Age the Roccia dell'Elefante was a cult place for the Nuragic civilization (1800–750 B.C.)

 

To get credit and claim a "Find" for this EarthCache,  name at least two different kinds of feldspar*, one other mineral which can be found in trachyte* and estimate the height of the rock.
A picture of you with the Elefante would be nice.

Send me an e-mail with the answers and your estimation.
Dont' wait for my logpermission, if the answers are incorrect I will contact you!

 

 

*answers can not be found on location

 

 

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750 Logged Visits

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Current Time:
Last Updated: on 12/15/2017 4:57:28 PM (UTC-08:00) Pacific Time (US & Canada) (12:57 AM GMT)
Rendered From:Unknown
Coordinates are in the WGS84 datum

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