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Mid- to lower-crustal architecture of the northern Lachlan and southern Thomson orogens: evidence from O-Hf isotopes

Waltenberg, K.; Bodorkos, Simon; Armstrong, Richard; Fu, Bin


The nature of the substrate below the northern Lachlan Orogen and the southern Thomson Orogen is poorly understood. We investigate the nature of the mid- to lower-crust using O and Lu–Hf isotope analyses of zircons from magmatic rocks that intrude these regions, and focus on the 440–410 Ma time window to minimise temporal effects while focussing on spatial differences. Over the entire region, weighted mean δ18O values range from 5.5 to 9.8‰ (relative to VSMOW, Vienna Standard Mean Oceanic...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Australian Journal of Earth Sciences
DOI: 10.1080/08120099.2018.1463928
Access Rights: Open Access


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