Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,923,863,211 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
?

extrusive

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
ex·tru·sive  (k-strsv, -zv)
adj.
1. Tending to push or thrust out.
2. Tending to protrude or project.
3. Derived from magma poured out or ejected at the earth's surface. Used of igneous rocks.
extrusive [ɪkˈstruːsɪv]
adj
1. tending to extrude
2. (Earth Sciences / Geological Science) (of igneous rocks) formed from magma issuing from volcanoes or cracks in the earth's crust; volcanic Compare intrusive [2]
ThesaurusLegend:  Synonyms Related Words Antonyms
Adj.1.extrusive - of rock material; forced out while molten through cracks in the earth's surface
geology - a science that deals with the history of the earth as recorded in rocks
intrusive - of rock material; forced while molten into cracks between layers of other rock
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
Add definition
Mentioned in?  References in periodicals archive?   Dictionary browser?   Full browser?
 
This can happen above ground as with volcanoes it is then called extrusive.
Igneous Rocks by Claudia Mann / Reference and Education community
For example, it has long been thought that the primary source of marine magnetic anomalies lies in the upper, extrusive section of the oceanic crust.
Discovery of "megamullions" reveals gateways into the ocean crust and ... by Tucholke, Brian E. / Oceanus
But studies of ophiolites suggested that the structure of the crust was more complex: The basalts in the upper, extrusive layer had different compositions and magnetic properties than the underlying layer of so-called sheeted dikes (relicts of the channels used by lavas to get to the surface).
Deep source of magnetic stripes by Weisburd, Stefi / Science News
 
 
 
Dictionary, Thesaurus, and Translations
?

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.