The influence of fractionation of REE-enriched minerals on the zircon partition coefficients

Zhong, Shihua; Li, Sanzhong; Seltmann, Reimar; Lai, Zhiqing; Zhou, Jie

doi:10.1016/j.gsf.2020.10.002

Cited by 23 publications

(3 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1d). The reason for such overlaps is that the trace element chemistry of zircon is affected by many different variables in addition to parental melt composition (e.g., temperature, pressure, oxygen fugacity, and competition from other minerals [40][41][42] ). Differentiating the relative significance (and thus further deconvolving the effects) of these variables is extremely challenging, especially for detrital grains that lack a direct link with the source rock from which they were derived 39 .…”

Section: Resultsmentioning

confidence: 99%

I-type and S-type granites in the Earth’s earliest continental crust

Zhong

Liu

et al. 2023

Commun Earth Environ

Self Cite

View full text Add to dashboard Cite

The composition and origin of Earth’s earliest continental crust remains enigmatic due to the absence of Hadean (>4 Ga) age rocks. Here we address this question by using machine learning to examine the provenance of the 4.4–3.3 Ga Jack Hills zircons, which constitute the best archive of Earth’s earliest continental crust. Our results reveal that although some Jack Hills zircons may be derived from trondhjemite-tonalite-granodiorite series rocks, which were common during the Archean (4–2.5 Ga), most (as high as ~70%) are sourced from igneous (I-) and sedimentary (S-) type granites. This finding provides clear evidence for rocks other than the trondhjemite-tonalite-granodiorite suite in the Earth’s earliest continental crust. Considering that I- and S-type granites are typical of modern convergent plate margins, the presence of a high proportion of Jack Hills zircons from these rocks supports the operation of a horizontal, mobile-lid tectonic regime in the early Earth.

show abstract

Section: Resultsmentioning

confidence: 99%

I-type and S-type granites in the Earth’s earliest continental crust

Zhong

Liu

et al. 2023

Commun Earth Environ

Self Cite

View full text Add to dashboard Cite

show abstract

“…Yb), is that zircon itself has a markedly high partition coefficient for Yb (~200; Claiborne et al, 2018)orders of magnitude higher than that of most other igneous minerals. Therefore, as soon as zircon starts to crystallise, HREE in the melt will become depleted, and thus the ratio involving REEs will change through the magmatic history whilst zircon is crystallising/dissolving (Zhong et al, 2021). As such, a detrital zircon ratio will be just a snapshot of this complex evolution.…”

Section: Hree-dependant Proxiesmentioning

confidence: 99%

Regional trends and petrologic factors inhibit global interpretations of zircon trace element compositions

Roberts,

Spencer,

Puetz

et al. 2024

Preprint

View full text Add to dashboard Cite

The trace element composition of zircon reveals information about the melt that they are derived from, as such, detrital zircon trace element compositions can be used to interrogate melt compositions, and thus the evolution of the continental crust in time and space. Here, we present a global database of detrital zircon compositions and use it to test whether average global trends for five common petrogenetic proxies truly represent secular changes in continental evolution. We demonstrate that the secular trend is broadly comparable across continental regions for Ti-in-zircon temperatures, but for other trace element ratios interrogated, secular trends are highly variable between continental regions. Because trace element ratios result from multiple petrologic variables, we argue that these petrogenetic proxies can be overinterpreted if projected to global geologic processes. In particular, we caution against the interpretation of crustal thickness from trace elements in zircon, and we argue that our results negate current hypotheses concerning secular changes in crustal thickness.

show abstract

“…Due to its unique stability and crystallization mechanism in igneous rocks, geochemical variations (i.e., trace element, Hf isotopic compositions) in zircons (ZrSiO 4 ) chemistry may preserve important information about the magmatic process (Siégel et al, 2018;Zhong et al, 2021). Zircons from the Lengshan andesite display variable Eu*/ Eu anomalies, Ti-in-zircon temperatures and ε Hf (t) values (Table S2 Considering the occurrence of xenocryst zircons grains (ages ranging from 1,752 to 2,184 Ma), it can be summarized that the formation of the Lengshan andesite may follow the three stages:…”

Section: Variations In Zircon Chemistry and Related Magmatic Processmentioning

confidence: 99%

Late‐Triassic high‐Mg andesite from the Zhangguangcai Range (NEChina): Hydrous melting of depleted mantle wedge in active continental margin

et al. 2022

View full text Add to dashboard Cite

The Zhangguangcai Range is located in the junction zone of the Palaeo-Asian and Palaeo-Pacific tectonic regimes; Mesozoic igneous rocks in this area are considered to have been formed in an active continental margin, which is related to the western subduction of the Palaeo-Pacific Plate beneath the Eurasian continent. However, the nature of the mantle wedge and related melting mechanism remains unclear. This paper reports zircon U-Pb data, whole-rock geochemistry, and zircon Lu-Hf isotope for a Late-Triassic high-Mg andesite in the southern part of the Zhangguangcai Range. Zircons from the andesite yield a concordant 206 Pb/ 238 U age of 218.6 ± 3.3 Ma, which is contemporary with the diorite in the study area. The Lengshan high-Mg andesite is characterized by moderate SiO 2 (57.30-60.15 wt.%), high Mg# (61-67), Al 2 O 3 (15.05-17.35 wt.%),(La/Yb) N (16.9-22.4), and variable Na 2 O/K 2 O (1.06-1.59). Its insignificant Eu negative anomalies (Eu/Eu* = 0.88-0.99) and high Sr/Y (68.4-96.4) may prove the existence of garnet or amphibole in the residual melt, where feldspar is more or less absent. The andesite is enriched in Rb, Ba and depleted in Nb, Ta, Ti, and other high-field-strength elements, with Nb/Ta ratios of 14.6-17.2, U/Th ratios of 0.28-0.31. In combination with its depleted zircon Lu-Hf isotopic compositions (e.g., ε Hf (t) = À0.48 to +13.1), it is proposed that the high-Mg andesite formed by hydrous melting of the mantle wedge, which was metasomatized by slab-derived adakitic melts. The subsequent assimilation of ancient crust results in the formation of some zircons with negative Eu*/Eu anomalies (0.05-0.1) and ε Hf (t) values (À13.8 to À18.5), which is approved by the relative evolved whole-rock Sr-Nd isotopic compositions.

show abstract

The influence of fractionation of REE-enriched minerals on the zircon partition coefficients

Cited by 23 publications

References 55 publications

I-type and S-type granites in the Earth’s earliest continental crust

I-type and S-type granites in the Earth’s earliest continental crust

Regional trends and petrologic factors inhibit global interpretations of zircon trace element compositions

Late‐Triassic high‐Mg andesite from the Zhangguangcai Range (NEChina): Hydrous melting of depleted mantle wedge in active continental margin

Contact Info

Product

Resources

About