The petrogenesis of the Kirwan Basalts of Dronning Maud Land, Antarctica

The 420 m thick sequence of Kirwan basalt crops out along the southernmost 50 km of the Kirwanveggen Escarpment (74°S, 6°W). There is little variation in major element chemistry of these basalts (SiO2 49·3–51·6 wt.%; MgO 5·1–6·6 wt.%), but the concentrations of certain incompatible elements (e.g., Z...

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Bibliographic Details
Published in:Journal of Petrology
Main Authors: Harris, Chris, Marsh, Julian S, Duncan, Andrew R, Erlank, Anthony J
Format: Article in Journal/Newspaper
Language:English
Published: 1990
Subjects:
Antarc*
Antarctica
Dronning Maud Land
Online Access:http://hdl.handle.net/10962/145492
http://vital.seals.ac.za:8080/vital/access/manager/Repository/vital:38443
https://doi.org/10.1093/petrology/31.2.341
Description
Summary:The 420 m thick sequence of Kirwan basalt crops out along the southernmost 50 km of the Kirwanveggen Escarpment (74°S, 6°W). There is little variation in major element chemistry of these basalts (SiO2 49·3–51·6 wt.%; MgO 5·1–6·6 wt.%), but the concentrations of certain incompatible elements (e.g., Zr) vary by factors of approximately two or more.

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