Synmagmatic deformation in the underplated igneous complex of the Ivrea-Verbano zone
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Abstract
The Ivrea-Verbano zone, northern Italy, contains an igneous complex up to 10 km thick that is thought to have been intruded near the interface between the continental crust and mantle during the late Paleozoic. New data indicate that this complex is pervasively deformed and concentrically foliated. Widespread deformation under hypersolidus conditions is indicated by growth of undeformed poikilitic phases across the foliation and segregation of late-stage melts into high-temperature faults and pressure shadows of boudins. The presence of analogous features in ophiolitic gabbros suggests that emplacement of the Ivrea- Verbano zone plutonic rocks involved large-scale flow of crystal mush in a dynamic, and possibly extensional, tectonic environment.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Synmagmatic deformation in the underplated igneous complex of the Ivrea-Verbano zone |
| Series title | Geology |
| DOI | 10.1130/0091-7613(1992)020<0613:SDITUI>2.3.CO;2 |
| Volume | 20 |
| Issue | 7 |
| Year Published | 1992 |
| Language | English |
| Publisher | Geological Society of America |
| Description | 4 p. |
| First page | 613 |
| Last page | 616 |
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