Petrified Forest

I drove to Tucson last month to visit my son Brian and his wife Laura.  On the way back I took an extra day to explore Petrified Forest National Park near Holbrook, Arizona.  There are two main attractions there, the painted desert and the petrified forest.  Here is the story of the Petrified Forest.

Some people think they are going to see a standing forest here, but the trees turned to stone after they fell and were washed downstream and buried during the late Triassic period around 200 million years ago.

As millions of years passed, the buried logs absorbed water and silica from volcanic ash which crystallized into quartz which often kept some of the logs’ details.

Spectacular colors were added by various minerals.  The colors in this photo have not been altered.

The crystallized logs were harder than the soil where they were buried.  Over time, erosion removed the surrounding dirt and the logs surfaced.  Sometimes the logs helped reduce the erosion under them, leaving them balanced on a narrow ridge.

Many of the huge logs look like they have been sectioned with a chainsaw.  This happened when they were still buried and earth movement caused forces that snapped the crystallized logs like breaking glass rods.

The petrified logs are mostly in the southern part of the park, but if you go be sure to see the painted desert in the north as well.

I hope you enjoy the photos, but remember they are copyrighted.  Please don’t use them without permission.

Mysterious Ice At Bear Lake, Idaho

Winter is a beautiful time to photograph Bear Lake in Idaho and Utah.  The lake freezes over only about seven out of ten years despite the very cold winters.  Yesterday Bruce Grayum and I went to one of my favorite locations at Bear Lake State Park on the Idaho end of the lake.

I had trouble understanding what I was seeing when I looked down on the lake from the North Beach jetty.  There were mysterious streaks across speckled gray areas of ice.  I could hear faint, almost musical tones coming from the lake.

I walked down the boat ramp and around the shore, and discovered that the streaks were caused by a thin layer of ice being blown over thicker stationary ice.  The thicker, gray ice had beautiful frost crystals that were being wiped out by the moving thin layer of ice.

The noise I had heard was the windblown thin ice breaking and stacking against the shore.  It was no more than a millimeter thick, so the broken, glass-like ice was very sharp.

I don’t know if this thin ice will be enough to trigger a complete freeze of Bear Lake as long as the wind keeps shifting it around, but this is not what I am used to seeing here.  In previous years there have been blocks of ice like boxcars along the shore.  There always seems to be something new to see at Bear Lake.

I hope you enjoyed these copyrighted photos.  Please do not use them without my permission.