A New Mechanism of Granite Emplacement: Instruction in Active Extensional Shear Zones

Traditionally, two main emplacement mechanisms have been emphasized in geological research: 'forceful' intrusion, whereby buoyancy-driven magmas physically push the crust aside, creating granitic diapirs and balloons; and 'passive' emplacement characterized by replacive mechanism...

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Bibliographic Details
Published in:Nature (London) 1990-02, Vol.343 (6257), p.452-452
Main Authors: Hutton, D H W, Dempster, T J, Brown, P E, Becker, S D
Format: Article
Language:English
Subjects:
Diapirs
Geographic profiles
Geology
Land
Online Access:Get full text
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Summary:Traditionally, two main emplacement mechanisms have been emphasized in geological research: 'forceful' intrusion, whereby buoyancy-driven magmas physically push the crust aside, creating granitic diapirs and balloons; and 'passive' emplacement characterized by replacive mechanisms such as cauldron subsidence and stoping. The discovery of a new igneous intrusion mechanism is reported.
ISSN:0028-0836
1476-4687