A new book for 2010 which will lead you to twenty-seven sites that show off the geology of Yosemite National Park. Turn your trip into much more than just a tour of the fabulous scenery. You'll see all those gorgeous sites but you'll also learn about how the domes such as Half Dome are formed, how Yosemite Valley, and much of the park, was carved by glaciers, about the continued shaping of the park, Volcanoes, hanging waterfalls and more.
The book is heavily illustrated with color photos and illustrations. The geology behind the park is presented in an easy to read and understand text. Read the story behind the geology.
This introduction is an all-encompassing look at the Earth: how it was formed and how it works. It explores the emerging geological research and explains how new advances in the understanding of plate tectonics, seismology, and satellite imagery have enabled us to begin to see the Earth for what it is, a dynamic and ever changing planet. It introduces the concepts of plate tectonics, continental drift, the earth's structure, and sea-floor spreading.
Our review: "When I came across this little book for the first time in Bookshop Santa Cruz I almost paid full retail for it! I did go straight to the shop and order a bunch of copies. I'm not disappointed. Earth : A Very Short Introduction has become an instant favorite and one of my must have recommendations. Here's a little pocket size book that you can carry with you just about anywhere. It has great coverage of the principles of geology and is presented in a narrative style. This is a fun read, not a dry geological text."
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Estwing has replaced the leather sheath with nylon sheaths manufactured with the same basic design.
Estwing Leather Sheath for Pointed Tip Rock Hammers
New model. The sheath now has a "relaxed fit" making it easier to use in the field as well as working with more hammers.
Fits Estwing Pointed Tip Rock Hammers. Now fits the Estwing Supreme 24oz Big Face Pointed Tip Rock Hammer and the Valley Soft-Touch 20oz Pointed Tip Rock Hammer.
Leather snap case for the Estwing 24 oz, 22 oz, 13 oz, and 14 oz Rock Picks. Difficult to use until well broken in. We recommend the Gfeller Casemakers sheaths and holsters, especially the holsters. The Gfeller sheaths are sized better and their also pre-shaped to fit the hammers.
(I placed this on the site when the sheathshad a tight fit. It's still handy information." Hint: to make it easier to use this sheath use products like Vaseline, mink oil, saddle soap and even soap to help break it in. If you've recently broken in a baseball glove you may have some Rawlings Glovolium and Easton Glove oil around. Don't over do it. Do a web search on breaking in a baseball glove to find out how they do it.
I still don't recommend using the Estwing Leather Sheaths in any case. I sell them because some customers insist on having a sheath to protect things from the hammers. They're OK for storage but Amateur Geologist never carries one into the field. Use a holster.
Did I mention that these sheaths are just too difficult to use.
Discover the fascinating world of meteorites with this thought-provoking poster. Colorful photographs of actual meteorite fragments billions of years old are accompanied by detailed descriptions of their composition and discovery sites around the world. Poster includes an actual meteorite with a certificate of authenticity!
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