Valles Caldera: A Geologic History
|Rating||:||4.30 (749 Votes)|
|Number of Pages||:||128 Pages|
. From the Inside Flap Formed by massive volcanic eruptions over a million years ago, the Valles Caldera offers scientists unprecedented opportunities for studying its geologic wonders, and now as a national preserve, it offers the public a unique outdoor experience
In 1994, the respected volcanologist discovered that the Galeras volcano in the Colombian Andes was spewing more than a pound of gold each day into the atmosphere and estimated that forty-five pounds of gold a year was deposited into the rocks beneath the crater. A Fellow of the Geological Society of America, Goff retired from the Geology/Geochemistry Group at New Mexico's Los Alamos National Laboratory (LANL) in 2004 a
"Inspiring geological site and an excellent companion book" according to L. Brannel. I discovered the caldera while visiting Los Alamos and was the only visitor in the parking area overlooking the site. An amazing and inspiring moment I'll never forget. This book explains what I was seeing and I wish I had read it before visiting the caldera. When I was there the bowl of the caldera was a working ranch. Now visitors have much more access and this is the book to have along for the tr. Robert Turpen said Lots of Information on an unknown phenomenon. Very interesting coverage of the Valle Grande area close to the Jemez area and Los Alamos.Twila. "Valles Caldera: A Geologic History" according to J. Miller. Lots of details in this book about the Valles Caldera. I also have the Valles Caldera map from High Desert Field Guides. The combination of the map and Fraser Goff's "Valles Caldera" is very informative.I am very lucky since I live about 1.5 hours away from the Valles Caldera. There is legislation before the Congress to make the Valles Caldera the next National Park. Remember, the volcano is dormant
Then Goff presents the geology, volcanology, and geothermal characteristics of the Caldera and the Jemez volcanic field. For over a century, it was safeguarded within the 89,000-acre Baca Ranch. One of those volcanologists, Fraser Goff, collaborated with the Valles Caldera Trust to provide an accessible scientific overview of the caldera's geologic wonders.Presented in two parts, Valles Caldera first offers a summary of significant geologic events that have taken place in the Valles Caldera area. The Valles Caldera consists of a twelve-mile-wide collapsed volcanic crater and more than ten postcollapse volcanic domes in New Mexico's Jemez Mountains. In the year 2000, Congress passed the Valles Caldera Preservation Act, creating the Valles Caldera Trust to purchase the ranch and create a nine-member board of trustees responsible for the protection and development of the Valles Caldera National Preserve.With special permission, qualified geologists interested in volcanic processes and hydrothermal systems have been allowed to conduct research on the preserve. Geologic terms and names unfamiliar to all but professional geologists are defined in a summarizing glossary.