Tuesday, January 4, 2011

Water from the Rock

The Columbia River Gorge and the Cascade mountains have some very unique and interesting geological features.

One of those features is the basalt rock which was formed during ancient historic volcanic activity. The towering cliffs of basalt line the Oregon and Washington sides of the Columbia River. The igneous rock protrudes through the ground in my backyard. Mt. Hood itself reveals its basalt bones when the snow melts off in the summer.

The winter here so far has been unusually cold, consistently below freezing. The Columbia Gorge is normally quite temperate with only occasional snow or ice.

The extra cold temperatures have brought out an interesting feature of the basalt rock that borders many of the roads in the area.


The rock is constantly seeping water.

This phenomena is mostly unnoticeable in other kinds of weather. If it is raining the rock is wet anyway. If it is hot summer, the water coming out of the rock is quickly evaporated. There are many mini waterfalls to be seen but the impression is that they are formed by streams of rain run-off and snow melt and many of them are that. In spring the waterfalls flow in abundance.


But what this cold weather has revealed is that this water is not run-off but is coming directly out of the rock. Of course, if the water source was traced back to a source, it would be rain and snow run off but the layers of rock above the basalt layers do not have water or ice on them. This water has been in the ground and is now coming out of the rocks.




This water is probably the most delicious and clean water available. It is filtered by the best natural filter there is.

Isn't our natural world endlessly fascinating?


5 comments:

  1. There are places in the mountains here that do that, too. It really is a sight to see.

    ReplyDelete
  2. That is beautiful and fascinating.
    I've got a daughter who recently moved to southeast Washington, so we are just beginning to discover the beauty of the Northwest US. thanks for sharing this, and posting on PW.

    ReplyDelete
  3. ps. you have beautiful pottery.Wow!
    love especially the vine-y pieces.

    ReplyDelete
  4. Thanks flower power momma! We've been here seventeen years and as you can see, we are still always discovering new things about the NW. Thanks for visiting!

    ReplyDelete

Note: Only a member of this blog may post a comment.