GEMOC - Department of EPS - Faculty of Science

Integrated in-situ U-Pb, Hf-isotope and trace-element analysis of detrital zircons: event signatures in the Pur-Banera Belt, Rajastan
W.L. Griffin^1,2, S.E. Jackson¹, E. A. Belousova¹ and S. Walters³
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining, 3. GeoDiscovery Group abstract

New insights into Re-Os systematics in the lithospheric mantle from in-situ analysis of sulfide phases
Olivier Alard¹, Laurie Reisberg², William L. Griffin^1,3, Jean-Pierre Lorand⁴, Suzane Y. O'Reilly¹ , Norman J. Pearson¹ and Stuart Graham¹
1. GEMOC Macquarie, 2. CRPG, CNRS, France, 3. CSIRO Exploration and Mining, 4 Laboratoire de Mineralogie, Museum National d'Histoire Naturelle, France. abstract

Sr-Nd-Pb isotopic systematics of North Queensland basalts: implications for mantle heterogeneity in eastern Australia and regional geodynamics
Ming Zhang¹, S.Y. O'Reilly¹ and J. Stephenson²
1, GEMOC Macquarie, 2, Dept of Earth Sciences, James Cook University abstract

Determination of copper isotope ratios by LA-MC-ICP-MS
A. Botfield, S.E. Jackson, W.L. Griffin and N.J. Pearson, GEMOC Macquarie abstract

Re and Os systematics of magnetite and ilmenite: a potential geochronometer for altered alkaline ultramafic rocks
S. Graham^1,3, S.R. Shee² and D.D. Lambert¹
1. Victorian Institute of Earth and Planetary Sciences, Monash University, 2. Stockdale Prospecting Ltd, 3. GEMOC Macquarie abstract

Tracking magma mixing and crust-mantle interaction with in-situ Hf-isotope analysis of zircons: Pingtan mafic-felsic complex, SE China
W.L. Griffin^1,2, X. Wang³, S.E. Jackson¹ , N.J. Pearson¹, S.Y. O'Reilly¹ and X. Xu³
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining, 3. Dept. of Geology, Nanjing University abstract

Residual and Mobile Mantle Sulfides: LAM-MC-ICPMS Analysis of Re-Os isotopes
O.Alard, N.J. Pearson, W.L. Griffin, S. Graham and S.E. Jackson
GEMOC Macquarie abstract

Measurement of selenium isotope abundance variations by ICP-MS,
D. Wulff1, B.D. Batts¹, H.R. Krouse² and S.E. Jackson³
1. Dept Chemistry, Macquarie, 2. Dept Physics and Astronomy, University of Calgary, Canada, 3. GEMOC Macquarie

CARBONATITE WORKSHOP, UNIVERSITE JEAN MONNET, ECOLE NATIONALE SUPERIEURE DES MINES, SAINT ETIENNE, FEBRUARY 21-22 2000

Carbonatites at 200 km: Quenched melt inclusions in megacrystalline lherzolite xenoliths, Slave Craton, Canada.
A.E. van Achterbergh, A.E.¹, W.L. Griffin^1,2, K. Kivi³ , N.J. Pearson¹ , and S.Y. O'Reilly¹
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining,, 3. Kennecott Canada Inc

Volatile-bearing ultramafic to mafic xenoliths from the Kerguelen archipelago (Southern Indian Ocean): Evidence for carbonatites in the mantle. B. Moine¹, M. Grégoire^1,J-Y Cottin^2, S.M.F. Sheppard³, S. Y. O'Reilly¹, and A. Giret²
1. GEMOC Macquarie, 2. Departement. de Géologie -Petrologie-Geochimie Université Jean. Monnet, Saint-Etienne, France, 3. Departement. des Sciences de la Terre, ENS-Lyon, France

8TH INTERNATIONAL SYMPOSIUM ON EXPERIMENTAL MINERALOGY, PETROLOGY AND GEOCHEMISTRY, BERGAMO, ITALY, 16-19 APRIL 2000

The effect of rutile on high-field-strength-element behaviour in the crust-mantle system
T.H. Green, GEMOC Macquarie abstract

Minor and trace element partitioning between peridotite phases and carbonatitic melts and their relevance to natural carbonatites
T.H. Green and J. Adam, GEMOC Macquarie

AUSTRALIAN PALAEOMAGNETISM ROCKMAGNETISM AND ENVIRONMENTAL MAGNETISM 2000 WORKSHOP, CANBERRA, 3-4 MAY 2000

Paleomagnetism of the Newcastle Range, Queensland
Kari Anderson, GEMOC Macquarie

WORLD GEOTHERMAL CONGRESS, KYUSHU-TOHOKU, JAPAN, JUNE 2000

Initial calculations of performance for an Australian hot dry rock reservoir
D. Swenson¹, P. Chopra² and D. Wyborn²
1. Mechanical and Nuclear Engineering Department, Kansas State University, 2. GEMOC ANU abstract

2000 WESTERN PACIFIC GEOPHYSICS MEETING, TOKYO, JAPAN, 27-30 JUNE 2000

A new mid-Carboniferous paleomagnetic pole from northern Australia: further constraints on Gondwana's APWP
Kari Anderson, GEMOC Macquarie

15TH AUSTRALIAN GEOLOGICAL CONVENTION, SYDNEY, 3-7 JULY 2000

A new mid-Carboniferous paleomagnetic pole from northern Australia: further constraints on Gondwana's APWP
Kari Anderson, GEMOC Macquarie

Use and abuse of the term calcalkaline
Richard J. Arculus, GEMOC ANU

High arsenic granites in the New England Batholith
Michael Cook, GEMOC Macquarie

Multiple origins of the eastern Australian alluvial diamonds
R.M. Davies¹, Suzanne Y. O'Reilly¹ and W.L. Griffin^1,2
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining abstract

The Walcha Road Adamellite: a large zoned pluton in the New England Batholith
R.H. Flood and S.E. Shaw, GEMOC Macquarie

Geology of the Glenelg River Complex segment of the Delamerian Orogenic Belt
C.M Gray¹, A.I.S. Kemp², J.A.C. Anderson¹ , D.J. Bushell¹, D.J. Ferguson¹ and J. Fitzherbert³
1. Department of Earth Sciences, La Trobe University, 2. GEMOC ANU, 3. Department of Geology and Geophysics, University of Sydney

Pressure effect on accessory mineral saturation in evolved granitic melts with differing K/Na ratios
Trevor H. Green, GEMOC Macquarie abstract

Tracking magma mixing: in-situHf-isotope analysis of zircons
W.L. Griffin^1,2, X. Wang^1,3, S.E. Jackson¹ , N.J. Pearson¹, S.Y. O'Reilly¹ and X. Xu^1,3
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining, 3. Department of Geology, Nanjing University abstract

Genesis of peraluminous granitic rocks: a source-based perspective
Tony I.S. Kemp¹, D.J. Ellis¹ and C.M. Gray²
1. GEMOC ANU, 2. Department of Earth Sciences, La Trobe University

The link between crustal anatexis and mafic magmatism for the petrogenesis of granitic rocks: an example from western Victoria
Tony I.S. Kemp¹, D.J. Ellis¹ and C.M. Gray²
1. GEMOC ANU, 2. Department of Earth Sciences, La Trobe University

Palaeomagnetic investigation of late Palaeozoic volcanic units from the northern New England Orogen, Queensland
M.A. Lackie, GEMOC Macquarie abstract

Synthesis of palaeomagnetic results from Siluro-Ordovician rocks of the Lachlan Fold Belt
M.A. Lackie¹, P.W. Schmidt² and D.A. Clark²
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining abstract

Early Permian palaeomagnetic poles from Australia: the Mount Leyshon Intrusive Complex and the Tuckers Igneous Complex, north Queensland
D.A. Clark¹ and M.A. Lackie²
1. CSIRO Exploration and Mining, 2. GEMOC Macquarie abstract

4-D Lithosphere Mapping in Australia and global comparisons
Suzanne Y. O'Reilly¹, W.L. Griffin^1.2, O. Gaul¹ and N. Pearson¹
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining abstract

Regional lithospheric domains in Australia from gravity modelling
Yvette H. Poudjom Djomani¹, Suzanne Y. O'Reilly¹ , William L. Griffin^1.2
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining abstract

Was the continental lithosphere desperately flat in the Archaean?
P.F. Rey1, Y.H. Poudjom Djomani2, G. Houseman1, S.Y. O’Reilly2, W L. Griffin2
1. Department of Earth Sciences, Monash University, 2. GEMOC Macquarie

Why geochemical tracers have failed us in our search for the source of the mesothermal gold ore fluid
John Ridley, GEMOC Macquarie abstract

High resolution, high sensitivity imaging and analysis of minerals and inclusions (fluid and melt) using the new CSIRO-GEMOC nuclear microprobe
Chris G. Ryan¹, Esmé van Achterbergh², Brent M. McInnes¹, Patrick J. Williams³, Guoyi Dong³ and Khin Zaw⁴
1. CSIRO Exploration and Mining, 2. GEMOC Macquarie, 3. Economic Geology Research Unit, James Cook University, 4. Centre for Ore Deposit Studies, University of Tasmania abstract

The Bermagui dykes: geochemical affinities and relationships to structure in the SE Lachlan Fold Belt
A.G. Sprigg^1.2, D.W. Durney¹ and K.A. Dadd^1,2
1. Department of Earth and Planetary Sciences, Macquarie University, 2. GEMOC Macquarie

Repeated mobilisation of gold as a polymetallic melt at the Challenger deposit, South Australia
Andrew Tomkins¹ and John Mavrogenes^1,2
1. GEMOC ANU, 2. RSES ANU

Variation in the distribution of gold within arsenopyrite and loellingite during pro- and retrograde metamorphism
Andrew Tomkins¹ and John Mavrogenes^1,2
1. GEMOC ANU, 2. RSES ANU

Large-scale global convection in the mantle beneath Australia from 55 Ma to now
Ming Zhang and Suzanne Y. O'Reilly, GEMOC Macquarie abstract

INTERNATIONAL GEOLOGICAL CONGRESS (IGC), RIO DE JANEIRO, AUGUST 2000

The laser ablation microprobe (LAM)-ICP-MS: a powerful trace element and isotopic microprobe
S.E. Jackson, GEMOC Macquarie
Nuclear waste disposal - the Oklo analogue
D.J. Mossman1, S.E. Jackson2 and F. Gauthier-Lafaye3
1. Dept Geography, Mount Allison University, Canada, 2. GEMOC Macquarie, 3.Ecole et Observatoire des Sciences de la Terre, Centre National de la Recherche Scientifique, France

GOLDSCHMIDT 2000, OXFORD, UNITE D KINGDOM, 3-8 SEPTEMBER 2000

Os isotope systematics of the Massif Central mantle lithosphere: In-situ and whole-rock studies
Alard O.1, Pearson N.J.1, Reisberg L.2, Lorand J.-P.3, Griffin W.L.1 and O'Reilly S.Y. 1
1. GEMOC Macquarie, 2. CRPG-CNRS, Nancy-les-Vandoeuvre, France, 3. Laboratoire de Mineralogie, Museum National d'Histoire Naturelle, Paris, France abstract

In-situ analysis of Highly siderophile trace elements and Re-Os isotopes by LAM óICPMS and LAM-MC-ICPMS reveal the residual and mobile nature of mantle sulfides.
Alard O.1, Griffin W.L.1,2, Lorand, J.P.3, Pearson N.J.1 and O'Reilly S.Y1.
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining, 3. Laboratoire de Mineralogie, Museum National d'Histoire Naturelle, Paris, France abstract

A partitioning origin for strontium anomalies in mantle-derived melts
J. Blundy1 and T. Green2
1. Dept. Earth Sciences, Bristol, 2. GEMOC, Macquarie

Tracking magma mixing: in-situ Hf-isotope analysis of zircons
W.L. Griffin1,2, X. Wang1,3, S.E. Jackson1, N.J. Pearson1, S.Y. O'Reilly1 and X. Xu1,3
1. GEMOC Macquarie, 2. CSIRO Exploration and Mining, 3. Department of Geology, Nanjing University, Nanjing, China abstract

Progress in the Application of Laser Ablation Microprobe (LAM)-ICP-MS to in Situ U-Pb Zircon Geochronology
Simon E. Jackson, William Griffin, Ashwini Sharma and Elena Belousova, GEMOC Macquarie abstract

Platinum group elements geochemistry of abyssal peridotites: an integrated study in the MARK area (Mid-Atlantic Ridge, 20-24°N) using ICP-MS, LAM-ICPMS, SEM and nuclear microprobe (NMP).
Luguet A.1, Alard O.2, Lorand J.P.1, Pearson N.J.2, Ryan C.G.3 and O'Reilly S.Y.2.
1. Laboratoire de Minéralogie, ESA 7058, MNHN, 75005 Paris, France, 2. GEMOC Macquarie, 3. CSIRO Exploration and Mining abstract

Structure and composition of the mantle beneath the Minusa region SW of the Siberian Craton: A Sr-Nd isotope and trace element study
V. Malkovets1, D, Ionov2, A. Agashev3, Y. Litasov4, Y, Orihashi5, S.Y. O’Reilly6 and W.L.Griffin6
1. Institute of Mineralogy and Petrology, Novosibirsk, Russia, 2. Département de Géologie, Université Jean Monnet, St Etienne, France, 3. Dept. Earth and Planetary Sciences Hokkaido University, Japan, 4. Institute of Geology, Geophysics and Mineralogy, Novosibirsk, Russia, 5. Dept. Earth and Planetary Sciences Tokyo Institute of Technology, Japan, 6. GEMOC Macquarie

LAM-MC-ICPMS analysis of mantle-derived sulfides: the key to Re-Os systematics of mantle peridotites
Pearson, N.J., Alard, O., Griffin, W.L., Graham, S. and Jackson, S.E., GEMOC Macquarie abstract

Basalts as probes of global convection and regional geochemical domains in the mantle beneath Australia
Suzanne Y. O'Reilly and Ming Zhang, GEMOC Macquarie abstract

Evaluation of Perchloric versus Nitric Acid Digestion for Precise Determination of Trace and Ultra Trace Elements by ICP-MS.
Sharma, A.L., Alard. O., Elhlou, S. and Pearson, N.J., GEMOC Macquarie abstract

SOCIETY OF ECONOMIC GEOLOGISTS SHORT COURSE "GOLD IN 2000", LAKE TAHOE, USA, 10-11 NOVEMBER 2000

Fluid chemistry of orogenic lode-gold deposits and implications for genetic models
John R. Ridley1 and Larryn W. Diamond2
1. GEMOC Macquarie, 2. Mineralogy and Petrology Group, Institute of Geological Sciences, University of Leoben, Austria abstract

GEOLOGICAL SOCIETY OF AMERICA MEETING, RENO, NEVADA, USA, NOVEMBER 2000

Lithogeochemistry of the Silurian (?) Passamaquoddy Bay sequence of the Coastal Volcanic Belt, southwestern New Brunswick: global and regional implication.
Dadd, K.A.1, van Wagoner, N.A.2 and Leybourne, M.3
1. GEMOC Macquarie, 2. Acadia University, Nova Scotia, Canada, 3. University of Texas, Dallas, USA abstract

AGU 2000 FALL MEETING, SAN FRANCISCO, USA, 15-19 DECEMBER 2000

Petrochemistry of the passive continental margin peridotite from Iberia Abyssal Plain (ODP Leg 173)
Natsue Abe, GEMOC Macquarie abstract

Multiple sulfide generations in mantle peridotites: interpreting Re-Os "depletion ages"
Griffin, W.L., Alard, O., Pearson, N.J. and O'Reilly, S.Y., GEMOC Macquarie abstract

Early Permian palaeomagnetic poles from North Queensland Australia: the Mount Leyshon Intrusive Complex and the Tuckers Igneous Complex
D.A. Clark1 and M.A. Lackie2
1. CSIRO Exploration and Mining, 2. GEMOC Macquarie

Secular geochemical variations of mafic rocks in the Jiyang Basin: tracking the destruction of old lithospheric mantle beneath the Sino-Korean Craton, north China
Ming Zhang1, Weiming Fan1,2, Suzanne Y. O'Reilly1, William L. Griffin1
1, GEMOC Macquarie, 2, Changsha Institute of Geotectonics, Chinese Academy of Sciences, Hunan, China abstract

6th AUSTRALASIAN SYMPOSIUM ON APPLIED ICP MASS SPECTROMETRY, UNIVERSITY OF CANBERRA, DECEMBER 2000

In-situ analysis of highly siderophile trace elements by LAM_ICPMS and Re-Os isotopes by LAM_MC_ICPMS reveals the residual and mobile nature of mantle sulfides
Alard, O.1, Pearson, N.J.1, Griffin, W.L.1, Lorand, J. P.2, Jackson, S. E.1 and O'Reilly, Suzanne Y.1.
1. GEMOC Macquarie 2. Laboratoire de Mineralogie, Museum National d'Histoire Naturelle, Paris, France abstract

A comparison of 213 vs 266 nm laser ablation for the analysis of rock-forming minerals
Jackson, S. E., Pearson, N.J., Sharma, A. and Griffin, W.L., GEMOC Macquarie abstract

Mass fractionation in the Nu plasma MC-ICPMS
Pearson, N.J., Griffin, W.L., Jackson, S. E. and O'Reilly, S. Y., GEMOC Macquarie abstract

Comparison of digestion techniques for precise determination of trace and ultra trace elements by ICP-MS
Sharma, A. L., Alard, O., Elhlou, S. and Pearson, N.J., GEMOC Macquarie abstract

GEMOC ARC National Key Centre

TITLES OF ABSTRACTS FOR CONFERENCE PRESENTATIONS IN 2000

2000 Annual Report