Intrusion - Wikipedia, the free encyclopedia
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An intrusion is any formation of intrusive igneous rock; rock formed from magma that cools and solidifies within the crust of a planet. In contrast, an extrusion consists of extrusive rock; rock f...
en.wikipedia.org/wiki/Intrusion
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Most geology textbooks describe the mechanism of granite pluton emplacement in terms of the very slow (millions of years) ascent of a large bodies (diapirs) of magma. In the lower – relatively ductile - part of the ... The suggested scenario for formation of upper-crustal granitic bodies can be summarized as follows:
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records.viu.ca/~earles/granite-dec00.htm
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During normal-dextral shear, the Bums Bluff pluton, a sheeted, moderately east-dipping, syn-magmatically sheared tonalite- granodiorite intruded syn ... 1997 Granitoid pluton formation by spreading of continental crust: the Wiley Glacier complex, northwest Palmer Land, Antarctica. Tectonophysics, 283 (1-4). 35-60.
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Two plutons are examined, the subvolcanic 98 Ma old Jackass Lakes pluton, central Sierra Nevada, California, and the voluminous middle crustal 442 Ma old Andalshatten pluton, central Norway.
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geosphere.geoscienceworld.org/cgi/content/abstract/5/3/...
geosphere.geoscienceworld.org/cgi/content/abstract/5/3/270
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The Acadian-age Waldoboro Pluton Complex (WPC), mid-coastal Maine, consists of seven granitoid units surrounded by migmatitic, peraluminous gneisses and schists (predominantly Bucksport or Sebascodegan Formation).
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petrology.oxfordjournals.org/cgi/content/abstract/35/5/...
petrology.oxfordjournals.org/cgi/content/abstract/35/5/1241
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ELSEVIER Tectonophysics 283 (1997) 3560 TECTPHYSICS II III II III Granitoid pluton formation by spreading of continental crust: the Wiley Glacier complex, ...
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linkinghub.elsevier.com/retrieve/pii/S0040195197001509
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Magnetic-petrologic studies on metasedimentary rocks from the low-pressure–high-temperature contact-metamorphic aureole of the Joshua Flat–Beer Creek pluton at the southern rim of the Inyo batholith, California, reveal the effect of contact metamorphism on magnetic minerals.
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bulletin.geoscienceworld.org/cgi/content/abstract/114/1...
bulletin.geoscienceworld.org/cgi/content/abstract/114/11/1438
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indeed, tectonic overpressuring was probably essential for producing sufficiently high magma pressures for laccolith formation at this midcrustal level. Simple thermal modeling, using microstructural and thermobarometric data, indicates that the total duration of emplacement of the pluton did not exceed 30 000 yr.
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bulletin.geoscienceworld.org/cgi/content/abstract/113/8...
bulletin.geoscienceworld.org/cgi/content/abstract/113/8/976
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Author(s): Kontny A, Dietl C ... Source: Geological Society of America Bulletin 114(11): 1438-1451 ... Letzte Änderung: 2007-07-08 12:09 p...
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www.agk.uni-karlsruhe.de/struktur/english/468.php
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