The influence of Al content on the Zener relaxation of Fe–Al alloys

Zheng-Cun, Zhou; Gao, Zhenzhong; Han, Fengpeng

doi:10.1088/0953-8984/15/40/017

Cited by 15 publications

(12 citation statements)

References 10 publications

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“…Therefore, whether the dated sample used by Tan et al [13] was from early Carboniferous strata needs further consideration. Moreover, many basic dykes with ages of early Permian or later [38,39] are widely developed in the Zhaheba area, from where the dated rocks were sampled by Zhang et al [12]. This extensive mafic magmatic event may have reset the zircon U-Pb systems, and resulted in the early Permian ages as reported by Zhang et al [12].…”

Section: Age Of the Volcanic Rocks From The Batamayineishan Formationmentioning

confidence: 91%

Zircon U-Pb and Hf isotopes of volcanic rocks from the Batamayineishan Formation in the eastern Junggar Basin

Zheng

Griffin

et al. 2010

Chin. Sci. Bull.

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An internal structural study was conducted to investigate U-Pb age, trace elements and Hf isotopes of basaltic zircons from the Batamayineishan Formation. The basalt was obtained from drill well San-Can 1 on the eastern Luliang uplift within the Junggar Basin. Trace element data of zircons show that all samples are magmatic, with similar REE patterns, including positive Ce (δCe=5.06-134), but negative Eu (δEu=0.06-0.55) anomalies and enrichment in heavy rare earth elements. Among 25 grains, the concordant ages were subdivided into three groups; ages of 300.4±1.3 Ma (n=11), 339.2±2.7 Ma (n=3) and 392.0±1.7 Ma (n=8). Three remaining grains were nearly concordant, with 206 Pb/ 238 U ages of 510±7, 488±6 and 453±6 Ma, respectively. The youngest concordant age (i.e., 300.4±1.3 Ma) could be interpreted as the formation age of the studied basaltic rock; this is consistent with the sampling position at the upper part of the Batamayineishan Formation. On the other hand, ages such as Ordovician and early Devonian are consistent with the ages of island-arc volcanic rocks (enrichment in Pb) or ophiolites around the basin. Moreover, the positive ε Hf (t) values of the early and middle Paleozoic zircons (+3.6-+10.5) may suggest that the basement traversed by the studied volcanic rocks may be Paleozoic in age, formed from the residual oceanic crust and island-arc complex. The ε Hf (t) values (+4.2-+17.1) of the late Paleozoic (~300.4 Ma) zircons suggest that the basaltic magmas were derived from partial melting of the asthenospheric mantle or depleted lithospheric mantle. These magmas were slightly contaminated by the existence of early-middle Paleozoic materials. The late Carboniferous basalts represent direct eruption of mantle-derived magmas at the upper crustal level during a post-collisional tectonic setting. We therefore consider that extensive vertical growth of the continental crust to have occurred before the late Carboniferous. Batamayineishan Formation, zircon U-Pb ages, Hf isotopes, continental crust growth, eastern Junggar Basin Citation:Su Y P, Zheng J P, Griffin W L, et al. Zircon U-Pb and Hf isotopes of volcanic rocks from the Batamayineishan Formation in the eastern Junggar Basin.

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Section: Age Of the Volcanic Rocks From The Batamayineishan Formationmentioning

confidence: 91%

Zircon U-Pb and Hf isotopes of volcanic rocks from the Batamayineishan Formation in the eastern Junggar Basin

Zheng

Griffin

et al. 2010

Chin. Sci. Bull.

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“…After this manuscript was submitted the paper by Zhou et al[90] was published. Results are inTable 1as alloy n.51b.…”

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confidence: 99%

Anelasticity of Fe–Al alloys, revisited

et al. 2004

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“…However while the activation enthalpies and temperature positions of Zener relaxation are well analyzed for 22-26 at% Al [13], in the DO3 ordered region, there are very few studies on the high Al concentration range, where the alloys are in B2 phase. This could be due to the fact that the Zener strength relaxation becomes smaller when approaching higher values of Al [14]. In the literature there is a certain scattering for the activation enthalpy of the Zener relaxation, going from 2.31 up to 2.46 eV [14][15][16][17][18][19].…”

Section: Analysis and Discussionmentioning

confidence: 99%