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- W4306164611 endingPage "106872" @default.
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- W4306164611 abstract "Many economic gold deposits formed in the Neoarchean under greenschist facies conditions in association with ductile–brittle shear zones that were conduits for sulfur-bearing hydrothermal fluids. Although the large-scale architecture and formation history of Neoarchean structurally controlled gold deposits has been the subject of many studies, the timing, rates, and durations of mineralization-related alteration remain challenging to deconvolve owing to a lack of event-specific geochronometers and the potential multitude of overprinting processes. In an effort to better understand the alteration history along the mineralized Zuleika Shear Zone in the Eastern Goldfields Superterrane of the Yilgarn Craton in Western Australia, we present the results of biotite Rb–Sr from 13 drill core samples (seven with apatite Sr isotopes) from the Kundana gold camp and the Carbine area. The Kundana district is a lode gold deposit that represents an ideal case study area to test the longevity of mineralization-associated alteration systems. We use in situ laser ablation collision cell triple quadrupole mass spectrometry on biotite from a range of characteristic alteration assemblages with well-defined relative growth ages. Biotite Rb–Sr ages constrain the timing of four different alteration stages between ∼2700 and 2550 Ma. The correlation between relative alteration chronology and Rb–Sr age and the lack of any relationship between grain size and age supports an interpretation of Rb–Sr ratios reflecting biotite growth during hydrothermal alteration with subsequent rapid cooling. Initial 87Sr/86Sr ratios of biotite and apatite are similar and indicate compositions that are more radiogenic than chondritic values and generally slightly more radiogenic than modelled Neoarchean Bulk Silicate Earth values, consistent with a mixture of mantle and crustal fluid sources. Ti-in-biotite thermometry yields temperatures between 540 and 615 °C, peaking towards the main gold mineralization phase. Although it is not possible to link individual Rb–Sr ages to specific faulting events, the absolute age dating for the various alteration assemblages indicates a prolonged, multiphase alteration system lasting ∼150 Ma. Long-term permeability networks with episodic short-lived fluid pulses that outlast terrane- or camp-scale deformation may not only apply to Neoarchean lode gold deposits, but to any tectonically driven zone of weakness in the continental crust." @default.
- W4306164611 created "2022-10-14" @default.
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- W4306164611 date "2022-11-01" @default.
- W4306164611 modified "2023-10-14" @default.
- W4306164611 title "Episodic alteration within a gold-bearing Archean shear zone revealed by in situ biotite Rb–Sr dating" @default.
- W4306164611 cites W1025143415 @default.
- W4306164611 cites W11107958 @default.
- W4306164611 cites W1524759453 @default.
- W4306164611 cites W1534749586 @default.
- W4306164611 cites W1786993418 @default.
- W4306164611 cites W1827364463 @default.
- W4306164611 cites W1947555207 @default.
- W4306164611 cites W1963549305 @default.
- W4306164611 cites W1963567059 @default.
- W4306164611 cites W1963974986 @default.
- W4306164611 cites W1964128599 @default.
- W4306164611 cites W1966583953 @default.
- W4306164611 cites W1970680726 @default.
- W4306164611 cites W1971863423 @default.
- W4306164611 cites W1972342782 @default.
- W4306164611 cites W1972619580 @default.
- W4306164611 cites W1976558278 @default.
- W4306164611 cites W1977274984 @default.
- W4306164611 cites W1978991677 @default.
- W4306164611 cites W1981244912 @default.
- W4306164611 cites W1981736444 @default.
- W4306164611 cites W1985920750 @default.
- W4306164611 cites W1992123305 @default.
- W4306164611 cites W1993768319 @default.
- W4306164611 cites W1995418957 @default.
- W4306164611 cites W1995835522 @default.
- W4306164611 cites W1997746397 @default.
- W4306164611 cites W1998743294 @default.
- W4306164611 cites W1998850284 @default.
- W4306164611 cites W1999982623 @default.
- W4306164611 cites W2001790553 @default.
- W4306164611 cites W2001792895 @default.
- W4306164611 cites W2002843018 @default.
- W4306164611 cites W2004131413 @default.
- W4306164611 cites W2004818826 @default.
- W4306164611 cites W2005925547 @default.
- W4306164611 cites W2008902986 @default.
- W4306164611 cites W2009550871 @default.
- W4306164611 cites W2011607179 @default.
- W4306164611 cites W2013680228 @default.
- W4306164611 cites W2018009306 @default.
- W4306164611 cites W2018716539 @default.
- W4306164611 cites W2023121641 @default.
- W4306164611 cites W2023737199 @default.
- W4306164611 cites W2025037750 @default.
- W4306164611 cites W2026021257 @default.
- W4306164611 cites W2026239216 @default.
- W4306164611 cites W2026969831 @default.
- W4306164611 cites W2032789292 @default.
- W4306164611 cites W2034090467 @default.
- W4306164611 cites W2038202477 @default.
- W4306164611 cites W2038934119 @default.
- W4306164611 cites W2038968833 @default.
- W4306164611 cites W2042473341 @default.
- W4306164611 cites W2050935007 @default.
- W4306164611 cites W2053381713 @default.
- W4306164611 cites W2054239625 @default.
- W4306164611 cites W2056138560 @default.
- W4306164611 cites W2056351010 @default.
- W4306164611 cites W2058170098 @default.
- W4306164611 cites W2058638070 @default.
- W4306164611 cites W2060245822 @default.
- W4306164611 cites W2061095231 @default.
- W4306164611 cites W2061504828 @default.
- W4306164611 cites W2066313292 @default.
- W4306164611 cites W2069499712 @default.
- W4306164611 cites W2072242234 @default.
- W4306164611 cites W2073319546 @default.
- W4306164611 cites W2075297859 @default.
- W4306164611 cites W2075901285 @default.
- W4306164611 cites W2077043332 @default.
- W4306164611 cites W2078151478 @default.
- W4306164611 cites W2081507714 @default.
- W4306164611 cites W2081957479 @default.
- W4306164611 cites W2084749351 @default.
- W4306164611 cites W2087806970 @default.
- W4306164611 cites W2088673087 @default.
- W4306164611 cites W2089507620 @default.
- W4306164611 cites W2089982870 @default.
- W4306164611 cites W2093478080 @default.
- W4306164611 cites W2095473629 @default.
- W4306164611 cites W2100411277 @default.
- W4306164611 cites W2100593302 @default.
- W4306164611 cites W2103018042 @default.
- W4306164611 cites W2109130692 @default.
- W4306164611 cites W2115951676 @default.
- W4306164611 cites W2119339013 @default.