Sunday, December 30, 2012
Thursday, December 27, 2012
Monday, December 24, 2012
1) The fossils found here and in the North Blue Diamond Hills are from the Permian Kaibab Era, 275 million years ago.
2) This era was ended by the extinction of 90% of life on Earth due to a rise in temperature of only 10 degrees Centigrade.
3) These fossils were made from the death of this life at this time.
4) The next era, the Triassic, began the evolution of life all over again ... dinosaurs, etc. ... so there was a long period of time when there was no life to leave fossils. That's why so much of the Earth does not contain apparent fossils.
Today, after climbing up to the top of the small Bird Spring Range where the fossils are located, we spent a lot of time looking around for some of the great fossils in the rock and chert. (Chert being the black rock seen adhering to the conglomerate and limestone in this area.)
It was so nice to have someone with us that had so many answers to our endless questions about what we were encountering up on the ridge. Thanks, Nick.
At the end of the first portion of the ridge, we carefully hiked down to the dirt road that approaches this site.
Today's hike was 6 miles with 1300 feet of gross elevation gain. Merry Christmas everyone!