Skip Navigation

This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (25)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by ZHANG, M.
Right arrow Articles by NORMAN, M.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Petrology Volume 42 Number 4 Pages 685-719 2001
© Oxford University Press 2001

Petrogenesis and Geodynamic Implications of Late Cenozoic Basalts in North Queensland, Australia: Trace-element and Sr–Nd–Pb Isotope Evidence

MING ZHANG1,*, P. J. STEPHENSON2, SUZANNE Y. O’REILLY1, MALCOLM T. McCULLOCH3 and MARC NORMAN1,{dagger}

1GEMOC ARC NATIONAL KEY CENTRE, DEPARTMENT OF EARTH AND PLANETARY SCIENCES, MACQUARIE UNIVERSITY, SYDNEY, N.S.W. 2109, AUSTRALIA
2DEPARTMENT OF EARTH SCIENCES, JAMES COOK UNIVERSITY, TOWNSVILLE, QLD. 4811, AUSTRALIA
3RESEARCH SCHOOL OF EARTH SCIENCES, AUSTRALIAN NATIONAL UNIVERSITY, CANBERRA, A.C.T. 0200, AUSTRALIA

Radiogenic isotopic (Sr–Nd–Pb) and trace-element compositions of late Cenozoic basalts from two discrete geographical regions in North Queensland, Australia, can be used to identify contributions from geochemically distinctive mantle source components. The North Queensland basalts have positive {Delta}7/4Pb and {Delta}8/4Pb values (relative to the Northern Hemisphere Reference Line), and high 206Pb/204Pb and 87Sr/86Sr at given {epsilon}Nd relative to Tertiary basalts in New South Wales, eastern Australia. The northernmost Cooktown nephelinites in North Queensland are isotopically depleted with low 87Sr/86Sr and 206Pb/204Pb and high 143Nd/144Nd compared with the more southern enriched Atherton–Nulla basalts. Sr–Nd–Pb isotopic data fit with two-component mixing between an isotopically depleted Indian Ocean mid-ocean ridge basalt source component and an enriched mantle component with an EM2 signature. The geochemical characteristics of the isotopically enriched Atherton–Nulla basalts are consistent with contributions from a subcontinental lithospheric mantle modified by subduction-related metasomatism. The isotopically depleted Cooktown nephelinites show HIMU-like incompatible element signatures that can be attributed to contributions from amphibole- and apatite-bearing assemblages in the lithospheric mantle. The low 206Pb/204Pb and high {epsilon}Nd of these depleted basalts are not correlated with their respective high U/Pb and low Sm/Nd parent/daughter element ratios. This decoupling implies that the formation of the metasomatic amphibole and apatite assemblages must be a close precursor of the magmatism, possibly connected with the eastward migration of the Indian Ocean asthenosphere and/or subduction at the northeastern margin of the Australian plate during early Tertiary time.

KEY WORDS: Cenozoic; basalt; Queensland; Australia; isotopes


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J PetrologyHome page
H. S. Cunningham, S. P. Turner, A. Dosseto, H. Patia, S. M. Eggins, and R. J. Arculus
Temporal Variations in U-series Disequilibria in an Active Caldera, Rabaul, Papua New Guinea
J. Petrology, March 12, 2009; (2009) egp009v1.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
A. J. Irving and D. H. Green
Phase Relationships of Hydrous Alkalic Magmas at High Pressures: Production of Nepheline Hawaiitic to Mugearitic Liquids by Amphibole-Dominated Fractional Crystallization Within the Lithospheric Mantle
J. Petrology, April 1, 2008; 49(4): 741 - 756.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
C. COOK, R. M. BRIGGS, I. E. M. SMITH, and R. MAAS
Petrology and Geochemistry of Intraplate Basalts in the South Auckland Volcanic Field, New Zealand: Evidence for Two Coeval Magma Suites from Distinct Sources
J. Petrology, March 1, 2005; 46(3): 473 - 503.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
L. M. LARSEN, A. K. PEDERSEN, B. SUNDVOLL, and R. FREI
Alkali Picrites Formed by Melting of Old Metasomatized Lithospheric Mantle: Manitdlat Member, Vaigat Formation, Palaeocene of West Greenland
J. Petrology, January 1, 2003; 44(1): 3 - 38.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
D. T. MURPHY, B. S. KAMBER, and K. D. COLLERSON
A Refined Solution to the First Terrestrial Pb-isotope Paradox
J. Petrology, January 1, 2003; 44(1): 39 - 53.
[Abstract] [Full Text] [PDF]

Home page
 J PetrologyHome page
E.-R. NEUMANN, E. WULFF-PEDERSEN, N. J. PEARSON, and E. A. SPENCER
Mantle Xenoliths from Tenerife (Canary Islands): Evidence for Reactions between Mantle Peridotites and Silicic Carbonatite Melts inducing Ca Metasomatism
J. Petrology, May 1, 2002; 43(5): 825 - 857.
[Abstract] [Full Text] [PDF]

Home page
 Reviews in Mineralogy and GeochemistryHome page
T. J. Dunai and D. Porcelli
Storage and Transport of Noble Gases in the Subcontinental Lithosphere
Reviews in Mineralogy and Geochemistry, January 1, 2002; 47(1): 371 - 409.
[Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.