Hydrothermally Altered Rock and Hot-Spring Deposits at Yellowstone National Park—Characterized Using Airborne Visible- and Infrared-Spectroscopy Data
作者： K. Eric Livo , W. C. Shanks Iii , Roger N. Clark , Raymond F. Kokaly , Fred A. Kruse
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摘要: The hydrothermal system in Yellowstone National Park has created altered rock and hot-spring deposits that were mapped using AVIRIS (airborne visible infrared imaging spectrometer) data. minerals are indicative of the geologic processes environments controlled their formation. Ongoing volcanic activity is expressed at surface by geothermal features, earthquakes, geologically recent caldera Precipitated such as siliceous sinter travertine on derived from chloride-rich alkaline solutions leaching silica calcite underlying country rock. Siliceous montmorillonite associated with systems abundant hot water, whereas kaolinite alunite acidic-vapor-dominated systems.
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