Plant communities with exceptional floral concentrations might trace their origins to geologic episodes occurring more than 250,000,000 years ago.

Hornblende Canyon twists and turns as it climbs the shoulder of Granite Mountain. It has a great variety of plants, some dry waterfalls, old mines, plus Native American sites with morteros.

Silicate Minerals Hornblende with Andesine National Museum of Natural History. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view download files. Click to ...

Hornblende is the most typical form of amphiboles in amphibolite facies. Avoiding cracks, we core drilled the amphibolite to obtain cylindrical rods with diameters of 3.10 mm, ...

THE disparity between the great laboratory strength of silicate rocks and their apparent weakness in nature, suggested by stress drops associated with earthquakes, remains a persistent problem in ...