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The age of undeformed dacite intrusions within the Kolaka Fault zone, SE Sulawesi, Indonesia

White, Lloyd; Hall, Robert; Armstrong, Richard


We present petrologic, geochemical and U-Pb sensitive high resolution ion microprobe (SHRIMP) data from previously undocumented dacite intrusions from the SE Arm of Sulawesi. The dacites occur in a strand of a major fault (the Kolaka Fault) that crosses the SE Arm of Sulawesi and northern Bone Bay. U-Pb SHRIMP dating shows the "Kolaka Dacite" yields zircon grains and overgrowths that range between ca. 4 and 7. Ma, indicating active magmatism in SE Sulawesi at this time. The youngest age...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Journal of Asian Earth Sciences
DOI: 10.1016/j.jseaes.2014.08.014


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