Journal article

Granite-greenstone connection in western victoria: an example from the bushy creek igneous complex

J Whelan, J Hergt, J Woodhead

AUSTRALIAN JOURNAL OF EARTH SCIENCES | TAYLOR & FRANCIS LTD | Published : 2007

Abstract

The Bushy Creek Igneous Complex includes rock types ranging from greenstone through diorite, granodiorite and granite to aplite and was emplaced in the Grampians-Stavely Zone 30 km southeast of the Grampians Ranges at ca 495 Ma. Striking correlations with varying silica contents are observed in major- and trace-element abundances which, coupled with a close spatial and temporal association, suggests a strong petrogenetic link between all rock types. It is proposed that these trends reflect the operation of fractional crystallisation processes dominated by hornblende (and/or clinopyroxene) and plagioclase at lower silica levels, changing to an assemblage dominated by plagioclase and accessory..

View full abstract