Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,901,543,108 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

greenschist facies

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.

greenschist facies

One of the major divisions of the mineral facies classification of metamorphic rocks, encompassing the rocks that formed under fairly low temperatures (480–660 °F, or 250–350 °C) and pressure conditions and usually produced by regional metamorphism. The minerals commonly found in such rocks include quartz, orthoclase, muscovite, chlorite, serpentine, talc, and epidote; carbonate minerals and amphibole (actinolite) may also be present.

greenschist facies [′grēn‚shist ′fā·shēz]
(petrology)
Any schistose rock containing an abundance of green minerals and produced under conditions of low to intermediate temperatures (300-500°C) and low to moderate hydrostatic pressures (3000-8000 bars).
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
The third group (sedimentary and carbonate rocks) is suggested to consist of epithermal gold deposits in lower greenschist facies rocks and distal to any known igneous rocks.
Gold Deposits of the CIS by Goldfarb, Richard J. / Geoscience Canada
The hydrothermal alteration of the samples varies from literally fresh rocks to true greenschist facies rocks.
Porosity structure of Icelandic basalt/Islandi basaltide poorsus by Sigurdsson, Omar; Stefansson, Valgardur / Proceedings of the Estonian Academy of Sciences: Geology
It contains terrigenous sedimentary rocks, mafic to ultramafic volcanic rocks and plutonic rocks metamorphosed from the greenschist facies to the lower amphibolite facies.
Razor Resources Inc. Announces Signing of Letter of Intent by Business Wire
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.