Looking out at Wizard Island
Crater Lake view from the north rim
Clark's nutcracker nestled among the pine branches
The bright green moss grows on the rocks and trees
around the lake. One man ask "did you ever see anything so green?"
This formation is called Pumice Castle. It is the only formation of its kind at Crater Lake.
This is what the information sign at the turnout has to say about Pumice Castle:
Mount Mazama, the great volcano that preceded Crater Lake, was built up by successive eruptions of lava over many thousands of years. Some lavas oozed or poured from the volcano’s top or sides. Some erupted as red-hot rocks that flooded down the slopes. Others exploded into the air and fell as cinders or globs.
This is what the information sign at the turnout has to say about Pumice Castle:
Mount Mazama, the great volcano that preceded Crater Lake, was built up by successive eruptions of lava over many thousands of years. Some lavas oozed or poured from the volcano’s top or sides. Some erupted as red-hot rocks that flooded down the slopes. Others exploded into the air and fell as cinders or globs.
You can see the variety of Mt. Mazama’s lavas on the steep caldera
wall. Pumice Castle, with its pinkish-brown “turrets,” is the most
eye-catching feature. It’s made of layers of pumice and other rocks
coughed up by Mt. Mazama – some so hot they welded welded together.
These air fall deposits were buried and compacted by other lavas, then
exposed when Mt. Mazama collapsed. A firm foundation of andesite lava
has kept Pumice Castle intact, while surrounding pumice deposits have
eroded away.
Mt. Mazama is classified as a composite volcano, a cone built up by lava flows interspersed with air fall deposits. Pumice Castle is made of air fall pumice that was laid down while Mt. Mazama was still growing. http://www.nationalparksblog.com/pumice-castle-crater-lake-national-park/
Mt. Mazama is classified as a composite volcano, a cone built up by lava flows interspersed with air fall deposits. Pumice Castle is made of air fall pumice that was laid down while Mt. Mazama was still growing. http://www.nationalparksblog.com/pumice-castle-crater-lake-national-park/
These dead trees stripped of all life make interesting
natural sculptures throughout Crater Lake Park
No comments:
Post a Comment