ORCID Profile
0000-0003-0209-5827
Current Organisation
University of South Australia
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Publisher: Informa UK Limited
Date: 02-2006
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 03-2010
Publisher: Geological Society of London
Date: 07-2015
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 03-2020
Publisher: MDPI AG
Date: 25-08-2021
DOI: 10.3390/MIN11090916
Abstract: Detrital zircon grains preserved within clasts and the matrix of a basal diamictite sequence directly overlying the Carrapateena IOCG deposit in the Gawler Craton, South Australia are shown here to preserve U–Pb ages and geochemical signatures that can be related to underlying mineralisation. The zircon geochemical signature is characterised by elevated heavy rare-earth element fractionation values (GdN/YbN ≥ 0.15) and high Eu ratios (Eu/Eu* ≥ 0.6). This geochemical signature has previously been recognised within zircon derived from within the Carrapateena orebody and can be used to distinguish zircon associated with IOCG mineralisation from background zircon preserved within stratigraphically equivalent regionally unaltered and altered s les. The results demonstrate that zircon chemistry is preserved through processes of weathering, erosion, transport, and incorporation into cover sequence materials and, therefore, may be dispersed within the cover sequence, effectively increasing the geochemical footprint of the IOCG mineralisation. The zircon geochemical criteria have potential to be applied to whole-rock geochemical data for the cover sequence diamictite in the Carrapateena area however, this requires understanding of the presence of minerals that may influence the HREE fractionation (GdN/YbN) and/or Eu/Eu* results (e.g., xenotime, feldspar).
Publisher: American Geophysical Union (AGU)
Date: 06-2009
DOI: 10.1029/2008TC002325
Publisher: Elsevier BV
Date: 02-2004
Publisher: Informa UK Limited
Date: 06-2003
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 20-07-2006
Publisher: Elsevier BV
Date: 02-2011
Publisher: Elsevier BV
Date: 12-2011
Publisher: Society of Economic Geologists
Date: 03-2011
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier BV
Date: 04-2014
Publisher: Elsevier BV
Date: 03-2015
Publisher: Informa UK Limited
Date: 25-10-2021
Publisher: Geological Society of London
Date: 19-10-2010
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 20-01-2006
Publisher: Informa UK Limited
Date: 02-2006
Publisher: Elsevier BV
Date: 09-09-2005
Publisher: Elsevier BV
Date: 10-2005
Publisher: Informa UK Limited
Date: 08-2002
Publisher: Elsevier BV
Date: 10-2008
Publisher: Informa UK Limited
Date: 27-03-2022
Publisher: University of Chicago Press
Date: 11-2007
DOI: 10.1086/521611
Publisher: Elsevier BV
Date: 04-2017
Publisher: Informa UK Limited
Date: 06-2008
Publisher: Informa UK Limited
Date: 17-06-2020
Publisher: Geological Society of London
Date: 04-06-2016
DOI: 10.1144/SP424.2
Publisher: Informa UK Limited
Date: 08-02-2011
Publisher: Geological Society of America
Date: 2002
Publisher: Elsevier BV
Date: 07-2020
Publisher: Informa UK Limited
Date: 06-2002
Publisher: Society of Economic Geologists
Date: 05-2003
Publisher: Society of Economic Geologists
Date: 2014
DOI: 10.5382/SP.18.12
Publisher: Elsevier BV
Date: 09-2013
Publisher: Wiley
Date: 27-11-2007
Publisher: Elsevier BV
Date: 06-2004
Publisher: MDPI AG
Date: 26-07-2021
DOI: 10.3390/MIN11080809
Abstract: The chemistry of hydrothermal monazite from the Carrapateena and Prominent Hill iron oxide-copper-gold (IOCG) deposits in the IOCG-rich Gawler Craton, South Australia, is used here to define geochemical criteria for IOCG exploration in the Gawler Craton as follows: Monazite associated with IOCG mineralisation: La + Ce 63 wt% (where La 22.5 wt% and Ce 37 wt%), Y and/or Th 1 wt% and Nd 12.5 wt% Intermediate composition monazite (between background and ore-related compositions): 45 wt% La + Ce 63 wt%, Y and/or Th 1 wt%. Intermediate monazite compositions preserving Nd 12.5 wt% are considered indicative of Carrapateena-style mineralisation Background compositions: La + Ce 45 wt% or Y or Th 1 wt%. Mineralisation-related monazite compositions are recognised within monazite hosted within cover sequence materials that directly overly IOCG mineralisation at Carrapateena. Similar observations have been made at Prominent Hill. Recognition of these signatures within cover sequence materials demonstrates that the geochemical signatures can survive processes of weathering, erosion, transport and redeposition into younger cover sequence materials that overlie older, mineralised basement rocks. The monazite geochemical signatures therefore have the potential to be dispersed within the cover sequence, effectively increasing the geochemical footprint of mineralisation.
Publisher: Informa UK Limited
Date: 12-2000
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 10-2008
Publisher: Elsevier BV
Date: 04-2012
Publisher: Informa UK Limited
Date: 20-11-2019
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 06-2007
No related grants have been discovered for David Giles.