Dr Steve Sheppard
|Position||Senior Research Fellow|
|Faculty||Faculty of Science and Engineering|
|School||Western Australian School of Mines|
|Department||Department of Applied Geology|
|Phone||+61 8 9266 9076|
I completed my BSc (Hons) at the Australian National University in 1987, and received a PhD from the University of Western Australia in 1992. I worked for the Geological Survey of Western Australia from 1994–2011, before going on to work for the Mineral Resources Authority in PNG, and then for a junior iron ore exploration company in Perth. I joined Curtin University in March 2015 on a contract until December 2016. I have also worked as a freelance editor for an English-language editing company.
I am presently working with Professor Birger Rasmussen's group on an ARC Linkage Grant "Chronostratigraphic and tectonothermal history of the northern Capricorn Orogen: Constructing a geological framework for understanding mineral systems" and an ARC Discovery Grant "The origin of iron formations: implications for ancient ocean chemistry and the evolution of microbial life". Whilst at the Geological Survey of Western Australia, I was one of the first users and exponents of digital field mapping techniques in 2001. In 2006 I introduced in situ phosphate geochronology to mapping programs via a collaboration with Professor Birger Rasmussen, and in 2007 initiated the use of magnetotelluric surveys to support the mapping. The mapping and allied studies produced a major reinterpretation of the geological history of the Capricorn Orogen.Back to top
Memberships, Awards and Training
I am a member of the Geological Society of Australia, Geological Society of America, the Society of Economic Geologists, and the Australian Institute of Geoscientists. In 2001–2002 I was the editor of the monthly newsletter for Geological Society of Australia's Western Australia Division.Back to top
I worked as a contract exploration geologist with Placer Pacific at Granny Smith mine in 1993. At the start of 1994 I accepted a position in the regional mapping branch at GSWA, where I spent 17 years, mainly mapping in the Gascoyne Province and Halls Creek Orogen. In 2011 I took up a position as Manager of Geological Mapping at the Mineral Resources Authority in PNG. From May 2012 to March 2015 I worked as a Senior Exploration Geologist for Brockman Mining Ltd, a junior iron ore company, on greenfields project generation and advanced projects in the Pilbara region. In March this year I joined Curtin University to work with Professor Birger Rasmussen and his group on ARC-funded projects on the Capricorn Orogen, and BIF and iron ore mineralisation.Back to top
I am interested in the origin of bedded iron ore deposits in Western Australia, USA and Canada. This research utilises in situ ion microprobe dating of uranium-bearing accessory minerals to constrain the timing and tectonic setting of mineralization. I am also researching various aspects of the tectonic evolution of the Proterozoic Capricorn Orogen; in particular, the Gascoyne Province where I spent about ten field seasons mapping the granitic and metamorphic rocks, and sampling for geochronology and whole-rock chemistry.Back to top
Field mapping, igneous petrology, whole-rock chemistry, tectonics, and mineral explorationBack to top
Journal Articles (Research)
- Johnson, S., F. Korhonen, C. L. Kirkland, J. Cliff, E. Belousova, and S. Sheppard. 2017.“An isotopic perspective on growth and differentiation of Proterozoic orogenic crust: From subduction magmatism to cratonization.”Lithos 268-271: 76-86.
Journal Articles (Research)
- Rasmussen, B., J. Zi, S. Sheppard, B. Krapez, and J. R. Muhling. 2016.“Multiple episodes of hematite mineralization indicated by U-Pb dating of iron-ore deposits, Marquette Range, Michigan, USA.”Geology 44 (7): 547-550.
- Sheppard, S., I. Fletcher, B. Rasmussen, J. Zi, J. R. Muhling, S. Occhipinti, M. Wingate, and S. Johnson. 2016.“A new Paleoproterozoic tectonic history of the eastern Capricorn Orogen, Western Australia, revealed by U–Pb zircon dating of micro-tuffs.”Precambrian Research 286: 1-19.
- Sheppard, S., B. Krapez, J. Zi, B. Rasmussen, and I. Fletcher. 2016.“The 1320 Ma intracontinental Wongawobbin Basin, Pilbara, Western Australia: A far-field response to Albany–Fraser–Musgrave tectonics.”Precambrian Research 285: 58-79.
Korhonen, FJ, Johnson, SP, Fletcher IR, Rasmussen, B, Sheppard, S, Muhling, JR, Dunkley, DJ, Wingate, MTD, Roberts, MP,
Kirkland, CL 2015, Pressure–temperature–time evolution of the Mutherbukin Tectonic Event, Capricorn Orogen: Geological Survey
of Western Australia, Report 146, 64p.
Hollis, JA, Kemp, AIS, Tyler, IM, Kirkland, CL, Wingate, MTD, Phillips, C, Sheppard, S, Belousova, E and Gréau, Y, 2014, Basin
formation by orogenic collapse: zircon U–Pb and Lu–Hf isotope evidence from the Kimberley and Speewah Groups, northern
Australia: Geological Survey of Western Australia, Report 137, 46p.
Bodorkos, S., Sheppard, S., Sircombe, K.N., Saroa, D. & Tsiperau, C., 2013, New SHRIMP U-Pb zircon ages from the Wau-Bulolo region, Papua New Guinea: Geoscience Australia, Record 2013/025, 56p. http://www.ga.gov.au/metadata-gateway/metadata/record/gcat_de3c43fb-5bd7-231a-e044-00144fdd4fa6/New+SHRIMP+U-Pb+zircon+ages+from+the+Wau-Bulolo+region%2C+Papua+New+Guinea
Reading, AM, Tkalčić, H, Kennett, BLN, Johnson, SP and Sheppard, S, 2012, Seismic structure of the crust and uppermost mantle of the Capricorn and Paterson Orogens and adjacent cratons, Western Australia, from passive seismic transects: Precambrian Research, v. 196–197, p. 295–308.
Sheppard, S, Page, RW, Griffin, TJ, Rasmussen, B, Fletcher, IR, Tyler, IM, Kirkland, CL, Wingate, MTD, Hollis, JA and Thorne, AM
2012, Geochronological and isotopic constraints on the tectonic setting of the c. 1800 Ma Hart Dolerite and the Kimberley and
Speewah Basins, northern Western Australia: Geological Survey of Western Australia, Record 2012/7, 28p.
Johnson, SP, Sheppard, S, Rasmussen, B, Wingate, MTD, Kirkland, CL, Muhling, JR, Fletcher, IR and Belousova, EA 2011, Two collisions, two sutures: Punctuated pre-1950 Ma assembly of the West Australian Craton during the Ophthalmian and Glenburgh Orogenies: Precambrian Research, v. 189, p. 239–262.
Sheppard, S, Bodorkos, S, Johnson, SP, Wingate, MTD and Kirkland, CL 2010, The Paleoproterozoic Capricorn Orogeny:
intracontinental reworking not continent–continent collision: Geological Survey of Western Australia, Report 108, 33p.
Selway, K, Sheppard, S, Thorne, AM, Johnson, SP and Groenewald, PB, 2009, Identifying the lithospheric structure of a Precambrian orogen using magnetotellurics: The Capricorn Orogen, Western Australia: Precambrian Research, v. 168, p. 185–196.
Sheppard, S, Rasmussen, B, Muhling, JR, Farrell, TR and Fletcher, IR, 2007, Grenvillian-aged orogenesis in the Palaeoproterozoic Gascoyne Complex, Western Australia: 1030–950 Ma reworking of the Proterozoic Capricorn Orogen: Journal of Metamorphic Geology, v. 25, p. 477–494.
Rasmussen, B, Sheppard, S and Fletcher, IR, 2006, Testing ore deposit models using in situ U-Pb geochronology of hydrothermal monazite: Paleoproterozoic gold mineralization in northern Australia: Geology, v. 34, p. 77–80.
Rasmussen, B, Fletcher, IR and Sheppard, S, 2005, Isotopic dating of the migration of a low-grade metamorphic front during orogenesis: Geology, v. 33, p. 773–776.
Sheppard, S, Occhipinti, SA and Nelson, DR, 2005, Intracontinental reworking in the Capricorn Orogen, Western Australia: the 1680 – 1620 Ma Mangaroon Orogeny: Australian Journal of Earth Sciences, v. 52, p. 443–460.
Sheppard, S, Occhipinti, SA and Tyler, IM, 2004, A 2005–1970 Ma Andean-type batholith in the southern Gascoyne Complex, Western Australia: Precambrian Research, v. 128, p. 257–277.Back to top