Metamorphic effect on zircon Lu–Hf and U–Pb isotope systems in ultrahigh-pressure eclogite-facies metagranite and metabasite

Zheng, Yong‐Fei; Wu, Yuan–Bao; Zhao, Zi‐Fu; Zhang, Shao‐Bing; Xu, Ping; Wu, Fu‐Yuan

doi:10.1016/j.epsl.2005.09.025

Cited by 341 publications

(254 citation statements)

References 60 publications

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“…Therefore, if zircon in a source rock dissolves during partial melting, the resulting hafnium isotopic composition of the melt will be less radiogenic than if zircon did not dissolve or was not present initially (Flowerdew et al 2006;Wu et al 2007). In the latter case, the melt composition will be influenced by other pre-existing or co-precipitating phases (Zheng et al 2005) and will usually inherit a signature close to that of the whole rock (e.g. Zeh et al 2007).…”

Section: A Identifying Sources Of Granitoids Through Hafnium Isotopesmentioning

confidence: 99%

Hidden Archaean and Palaeoproterozoic crust in NW Ireland? Evidence from zircon Hf isotopic data from granitoid intrusions

et al. 2009

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-The presence of major crystalline basement provinces at depth in NW Ireland is inferred from in situ Hf isotope analysis of zircons from granitoid rocks that cut structurally overlying metasedimentary rocks. Granitoids in two of these units, the Slishwood Division and the Tyrone Central Inlier, contain complex zircons with core and rim structures. In both cases, cores have average εHf values that differ from the average εHf values of the rims at 470 Ma (the time of granitoid intrusion). The Hf data and similarity in U-Pb age between the inherited cores and detrital zircons from the host metasedimentary rocks suggests local contamination during intrusion rather than transport of the grains from the source region at depth. Rims from the Slishwood Division intrusions have average εHf 470 values of −7.7, consistent with a derivation from juvenile Palaeoproterozoic crust, such as the Annagh Gneiss Complex or Rhinns Complex of NW Ireland, implying that the deep crust underlying the Slishwood Division is made of similar material. Rims from the Tyrone Central Inlier have extremely negative εHf 470 values of approximately −39. This isotopic signature requires an Archaean source, suggesting rocks similar to the Lewisian Complex of Scotland, or sediment derived wholly from it, occurs at depth in NW Ireland.

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Section: A Identifying Sources Of Granitoids Through Hafnium Isotopesmentioning

confidence: 99%

Hidden Archaean and Palaeoproterozoic crust in NW Ireland? Evidence from zircon Hf isotopic data from granitoid intrusions

et al. 2009

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“…Partial or total loss of Pb is a common feature during magmatic and metamorphic zircon growth due to alteration caused by later fluids [39][40][41][42][43][44][45] . Large variations in Ti and other traceelement concentrations as in the case of the studied detrital zircons might be due to repeated influxes of hotter fluids which might be caused by changes in the temperature or composition of melts parental to zircons 35,[46][47][48][49] .…”

Section: Resultsmentioning

confidence: 99%

Paleoarchean Zircons from Quartzite of South Bundelkhand Supracrustal Complex:Origin and Implications for Crustal Evolution in Bundelkhand Craton, Central India

Слабунов¹,

Singh²,

Joshi³

et al. 2017

Current Science

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The present study reports trace elemental data from 39 Paleoarchean (3.43 and 3.25 Ga) zircons separated from quartzite near Girar, which forms a part of the South Bundelkhand Supracrustal Complex in Central India. The zircons are prismatic, have well-developed oscillatory zoning and their Th/U ratio ranging from 0.27 to 8.62 is comparable to that of typical magmatic zircons. Crystallization temperature of 620-776C using titanium-in-zircon thermometer, positive slope of zircon REE patterns, positive Ce anomalies along with mineral inclusions like quartz, muscovite, magnetite and monazite suggest a granitic source for these quartzites. Sm-Nd isotopic data (T DM age = 3.29 Ga) along with zircon trace elemental data indicate the presence of granitic continental crust in southern Bundelkhand Craton at least during the Paleoarchean (3.4 Ga).

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“…The end member of the YZC crustal materials is comprised by 60% YZC upper/middle crust (SiO 2 = 76 wt.%) and 40% YZC lower crust (SiO 2 = 59 wt.%) . Wu et al, 2005a), and in (b) are zircon Hf model ages for UHP metaigneous rocks in the Dabe orogenic belt (data after (Zheng et al, 2005(Zheng et al, , 2006bChen et al, 2007;Zhao et al, 2008)). …”

Section: Resultsmentioning

confidence: 99%

Petrogenesis of the early Cretaceous volcanic rocks in the North Huaiyang tectono-magmatic unit of the Dabie Orogen, eastern China: Implications for crust–mantle interaction

Gao

Zhao

2016

Journal of Asian Earth Sciences

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Metamorphic effect on zircon Lu–Hf and U–Pb isotope systems in ultrahigh-pressure eclogite-facies metagranite and metabasite

Cited by 341 publications

References 60 publications

Hidden Archaean and Palaeoproterozoic crust in NW Ireland? Evidence from zircon Hf isotopic data from granitoid intrusions

Hidden Archaean and Palaeoproterozoic crust in NW Ireland? Evidence from zircon Hf isotopic data from granitoid intrusions

Paleoarchean Zircons from Quartzite of South Bundelkhand Supracrustal Complex:Origin and Implications for Crustal Evolution in Bundelkhand Craton, Central India

Petrogenesis of the early Cretaceous volcanic rocks in the North Huaiyang tectono-magmatic unit of the Dabie Orogen, eastern China: Implications for crust–mantle interaction

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