A stable isotope investigation into fluid-rock interaction during regional metamorphism in western dronning maud land, East Antarctica
Includes bibliographical references. The Sverdrupfjella Group in western Dronning Maud Land forms part of a 1200 Ma to 900 Ma orogenic belt which experienced a thermal overprint at around 500 Ma. Although the degree of tectonic reworking during this later event remains uncertain, evidence for late f...
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| Format: | Master Thesis |
| Language: | English |
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University of Cape Town
2001
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| Online Access: | http://hdl.handle.net/11427/9706 https://open.uct.ac.za/bitstream/11427/9706/1/thesis_sci_2001_johnstone_wp%20%281%29.pdf |
| Summary: | Includes bibliographical references. The Sverdrupfjella Group in western Dronning Maud Land forms part of a 1200 Ma to 900 Ma orogenic belt which experienced a thermal overprint at around 500 Ma. Although the degree of tectonic reworking during this later event remains uncertain, evidence for late fluid alteration is widespread. In this study, the high-grade metamorphic rocks which make up the Sverdrupfjella Group were sampled in the central Kirwanveggen area. The stable isotope and whole-rock composition of these rocks have been determined, in order to test whether zones of intense fluid-rock interaction can be used as evidence for Pan African overprinting of Grenvillian orogenesis in western Dronning Maud Land. |
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