Monazite geochronology and geochemistry of meta-sediments in the Narryer Gneiss Complex, Western Australia: Constraints on the tectonothermal history and provenance

Iizuka, T, McCulloch, MT, Komiya, T, Shibuya, T, Ohta, K, Ozawa, H, Sugimura, E and Collerson, KD (2010) Monazite geochronology and geochemistry of meta-sediments in the Narryer Gneiss Complex, Western Australia: Constraints on the tectonothermal history and provenance. Contributions to Mineralogy and Petrology, 160 6: 803-823. doi:10.1007/s00410-010-0508-0


Author Iizuka, T
McCulloch, MT
Komiya, T
Shibuya, T
Ohta, K
Ozawa, H
Sugimura, E
Collerson, KD
Title Monazite geochronology and geochemistry of meta-sediments in the Narryer Gneiss Complex, Western Australia: Constraints on the tectonothermal history and provenance
Journal name Contributions to Mineralogy and Petrology   Check publisher's open access policy
ISSN 0010-7999
1432-0967
Publication date 2010-12
Sub-type Article (original research)
DOI 10.1007/s00410-010-0508-0
Volume 160
Issue 6
Start page 803
End page 823
Total pages 21
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2011
Language eng
Abstract Mt. Narryer and Jack Hills meta-sedimentary rocks in the Narryer Gneiss Complex of the Yilgarn Craton, Western Australia are of particular importance because they yield Hadean detrital zircons. To better understand the tectonothermal history and provenance of these ancient sediments, we have integrated backscattered scanning electron images, in situ U-Pb isotopic and geochemical data for monazites from the meta-sediments. The data indicate multiple periods of metamorphic monazite growth in the Mt. Narryer meta-sediments during tectonothermal events, including metamorphism at ~3.3-3.2 and 2.7-2.6 Ga. These results set a new minimum age of 3.2 Ga for deposition of the Mt. Narryer sediments, previously constrained between 3.28 and ~2.7 Ga. Despite the significant metamorphic monazite growth, a relatively high proportion of detrital monazite survives in a Fe- and Mn-rich sample. This is likely because the high Fe and Mn bulk composition resulted in the efficient shielding of early formed monazite by garnet. In the Jack Hills meta-sediments, metamorphic monazite growth was minor, suggesting the absence of high-grade metamorphism in the sequence. The detrital monazites provide evidence for the derivation of Mt. Narryer sediments from ca. 3.6 and 3.3 Ga granites, likely corresponding to Meeberrie and Dugel granitic gneisses in the Narryer Gneiss Complex. No monazites older than 3.65 Ga have been identified, implying either that the source rocks of >3.65 Ga detrital zircons in the sediments contained little monazite, or that >3.65 Ga detrital minerals had experienced significant metamorphic events or prolonged sedimentary recycling, resulting in the complete dissolution or recrystallization of monazite. © 2010 Springer-Verlag.
Keyword Monazite
Ancient zircon
Hadean
LA-ICPMS
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2011 Collection
 
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Created: Sun, 02 Jan 2011, 00:17:34 EST