Processes of felsic melt migration through the mid-crust : evidence from field relations in the central zone of the Damara Belt, Namibia

The migration of granitic melt is the main mechanism that facilitates upward movement of heat and mass, and the chemical differentiation of the continental crust. Whereas the processes of melt segregation and emplacement are relatively well understood, melt ascent mechanisms are more speculative. Specific outstanding questions include the structure of melt conduits, the driving forces of melt ascent, and the timescales involved. The Central Zone of the Damara Belt presents a snapshot of melt migration through subsolidus, mid-crustal rocks. Outcrops selected for detailed investigation are representative of a variety of mestasedimentary rock types and strain environments, and all contain pervasive and interconnected leucosome networks representative of melt movement through, and emplacement into these rocks.

Grantor dc:publisher.institution

Department of Geological Sciences

Year dc:date.issued

2012

Author dc:creator

• Faber, Carly

Advisor dc:contributor.advisor

• Diener, Johann

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/10446

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/10446