Abstract
Most of the geodynamic theories of deformation aswell asmetamorphismandmelting of continental lithosphere
are concentrated on plate boundaries and are dominated by the effects of subduction upon deformation of the
margins of continental lithospheric blocks. However, it is becoming increasingly apparent that suture zones, or
mobile belts, presumably representing fossil subduction zones, or other types of pre-deformation which occur
far from present plate boundaries, play a key role in intra-continental deformation. In such zones, the crust is
strongly sheared and the mantle lithosphere is metasomatized. Reworking of such settings reveals a surprisingly
large range of instabilities that develop in compressed lithosphere with lateral heterogeneities inherited from
previous deformational processes. Structural complexity arises,which is sensitive to lithospheric age and tectonic
setting. This complexity influences localization of deformation, topographic evolution, melt generation, and
melt generation, ascent and emplacement. In this paper, using fully coupled petrological–thermomechanical
modeling, various tectonic responses are correlated with magmatic events in intra-continental settings and are
compared to observed intra-cratonic orogenies and magmatic events.
are concentrated on plate boundaries and are dominated by the effects of subduction upon deformation of the
margins of continental lithospheric blocks. However, it is becoming increasingly apparent that suture zones, or
mobile belts, presumably representing fossil subduction zones, or other types of pre-deformation which occur
far from present plate boundaries, play a key role in intra-continental deformation. In such zones, the crust is
strongly sheared and the mantle lithosphere is metasomatized. Reworking of such settings reveals a surprisingly
large range of instabilities that develop in compressed lithosphere with lateral heterogeneities inherited from
previous deformational processes. Structural complexity arises,which is sensitive to lithospheric age and tectonic
setting. This complexity influences localization of deformation, topographic evolution, melt generation, and
melt generation, ascent and emplacement. In this paper, using fully coupled petrological–thermomechanical
modeling, various tectonic responses are correlated with magmatic events in intra-continental settings and are
compared to observed intra-cratonic orogenies and magmatic events.
| Original language | English |
|---|---|
| Pages (from-to) | 196-208 |
| Journal | Gondwana Research |
| Volume | 27 |
| DOIs | |
| Publication status | Published - 2015 |
| Externally published | Yes |
Keywords
- Intra-plate magmatism
- Intra-continental deformation
- Melt generation