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Lava Point - Zion NP

A cache by Coach Steve Send Message to Owner Message this owner
Hidden : 11/02/2006
Difficulty:
2.5 out of 5
Terrain:
2.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

These coordinates take you to a basalt flow within Zion National Park. The dirt road from Kolob Road to Lava Point is an easy drive for all but lowered vehicles. However, it is closed during the winter.

Lava Point is a basalt flow from one of the cinder cones in the area, possibly Home Valley Knoll that was to the south of the dirt road you drove in on to get to the coordinates.

Basalt is one of the four major categories of volcanic rocks. It has the least amount of silica of the four types of volcanic rocks. (Silica is a common compound found in the earth’s crust). Basalt also tends to be the hottest and most fluid of the volcanic rocks. See http://volcanoes.usgs.gov/Products/Pglossary/VolRocks.html for a further description and graphics regarding types of volcanic rocks.

At the coordinates you can look down the cliff at the boulders of basalt that have fallen off the cliff and at the cliff side to see columnar jointing. While not the best example, you can still see the pattern. (The Giant’s Causeway is one of the best) Typically the columns have 5 or 6 sides, but can range from 3 to 7 sides.

These columns form as the lava cools. As the lava cools it contracts and cracks. These cracks typically meet at approximately 120 degree angles, forming roughly hexagonal columns. In the best examples, these columns can be hundreds of feet long.

There is a trail that goes down the side of the cliff. The trail is steep and difficult.

Logging requirements:
Send me a note with :

  1. The text "GCZ5YM Lava Point - Zion NP" on the first line
  2. The number of people in your group.
  3. Have a look around on the point. Find what you think are 10 seperate columnar joints and count the sides.
  4. Optional--Please post a picture of youself or other member of your party at the cache site.

The above information was compiled from the following sources:

  • Hamilton, Wayne L. 1987, Geological Map of Zion National Park, Utah Miek, Robert F., et. al., Geology of Zion National Park, Utah in Geology of Utah’s Parks and Monuments, 2003 Utah Geological Association Publication 28 (second edition) D.A. Sprinkel, T.C. Chidsey, Jr. and P.B. Anderson, editors
  • http://volcano.und.edu/vwdocs/vw_hyperexchange/col_joint.html

Placement approved by the
Zion National Park


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Coordinates are in the WGS84 datum

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