Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

USGS CMG InfoBank: Hydrothermal Precipitates

Skip navigational links
Loading
Dictionaries: Our Mapping Systems   The USGS and Science Education   USGS Fact Sheets   Topics   Keywords   Data Dictionary   Metadata Dictionary   Computer Terminology   Digital Formats  
InfoBank Terms: Activity ID   activity overview   crew   digital data   formal metadata   lines   metadata   NGDC   port stops   project/theme   region   ship   stations   time   virtual globe   year  
Data Types: bathymetry   biological   geochemical   gravity   ground penetrating radar   imaging   LIDAR   logs   magnetics   metering equipment   navigation   samples   seismic   total station   definitions disclaimer  
Data Formats: ARC coverage   E00   FGDC metadata   gridded/image   imaging   material   scattered/swath   Shapefile   vector/polygon  
Comment: 21:19 - 21:48 (00:29)
Source: Annenberg/CPB Resources - Earth Revealed - 12. Minerals: The Materials of Earth
Keywords: gold, silver, copper, "metallic mineral", mineral, precipitation, "hydrothermal solution", fissure, "rare mineral", "J. Lawford Anderson"

Our transcription: Metallic minerals, such as gold, and silver, and copper all form the same way; they're precipitated from very hot water solutions called "hydrothermal" solutions that percolate up through cracks, up through fissures in the Earth, and as they reach cooler regions, they begin to crystallize, and whatever metals and non-metals that are in, dissolved in that hot water, precipitate out.
In case of gold, or silver, or copper, it calls for very special waters, and that's why they're all very rare.

Geology School Keywords
Skip footer navigational links

Coastal and Marine Science Centers:  Pacific   St. Petersburg   Woods Hole  
InfoBank   Coastal and Marine Geology Program   Geologic Information   Ask-A-Geologist   USGS Disclaimer  


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/moviepage/11.01.26.html
Page Contact Information: InfoBank staff
Page Last Modified: Thu Oct 31 04:26:30 PDT 2013  (chd)