18 3 intrusive activity
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18.3 – Intrusive Activity. http://3dparks.wr.usgs.gov/2005/lakemead/images/volcanic.gif. Plutons. Intrusive igneous rock body, including __________, ________,sills & dikes Formed through ___________-building processes and ___________-oceanic collisions

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18.3 – Intrusive Activity

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18 3 intrusive activity

18.3 – Intrusive Activity

http://3dparks.wr.usgs.gov/2005/lakemead/images/volcanic.gif


Plutons

Plutons

  • Intrusive igneous rock body, including __________, ________,sills & dikes

  • Formed through ___________-building processes and ___________-oceanic collisions

  • Can be __________ at Earth’s surface to uplift and erosion

http://www.geo.hunter.cuny.edu/bight/images/pluton.jpg


Batholiths stocks

Batholiths & Stocks

  • The _______ plutons are called Batholiths.

  • Batholiths are _________-grained, irregularly shaped, igneous rock mass that covers at least ________ km2

  • Stocks are ___________ shaped plutons but ___________ in size.

  • Both generally form 5-______ km below Earth’s surface and are _________ in the interior of major _____________ chains


Laccoliths

Laccoliths

  • Relatively _____________

  • ____________-shaped pluton that forms when magma ___________ into parallel rock layers ________ to Earth’s surface

  • Laccoliths have

    ________ bottoms

    and ___________

    tops.

http://www.indiana.edu/~geol105/images/gaia_chapter_5/dike&sill.jpg


Sills

Sills

  • Pluton that forms when magma ________ parallel rock ______________

http://www.austmus.gov.au/geoscience/images/earth_diagrams/volcano_structure.gif


Dikes

Dikes

  • Pluton that cuts __________ preexisting rocks and often forms when magma ____________ cracks in surrounding rock ____________

http://www.waipahums.k12.hi.us/eportfolio05-06/wisportfolio05-06/team8d_portfolios/y_kenneth_e_portfolio/volcano_files/image002.png


Plutons tectonics

Plutons & Tectonics

  • ____________ plutons form as the result of _____________-building processes.

  • Plutons are thought to form as a result of _________________-continental and ___________-continental convergence.


Reinforcement

Reinforcement

  • T/F

  • Batholiths are common in the interiors of mountain chains.

  • Laccoliths have curved bottoms and flat tops.

  • Sills form when magma is forced between rock layers.

  • Most igneous activity occurs deep within earth.


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