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Artykuły w czasopismach na temat „Hf-Nd-Pb isotopic compositions”

Autor: Grafiati

Data publikacji: 16 listopada 2024

Data aktualizacji: 31 lipca 2025

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1

Vezinet, Adrien, Emilie Thomassot, Yan Luo, Chiranjeeb Sarkar, and D. Graham Pearson. "Diachronous Redistribution of Hf and Nd Isotopes at the Crystal Scale—Consequences for the Isotopic Evolution of a Poly-Metamorphic Crustal Terrane." Geosciences 12, no. 1 (2022): 36. http://dx.doi.org/10.3390/geosciences12010036.

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In metamorphic rocks, mineral species react over a range of pressure–temperature conditions that do not necessarily overlap. Mineral equilibration can occur at varied points along the metamorphic pressure–temperature (PT) path, and thus at different times. The sole or dominant use of zircon isotopic compositions to constrain the evolution of metamorphic rocks might then inadvertently skew geological interpretations towards one aspect or one moment of a rock’s history. Here, we present in-situ U–Pb/Sm–Nd isotope analyses of the apatite crystals extracted from two meta-igneous rocks exposed in t

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2

Tong, Jie, Haibo Zou, Zipei Guo, Liwen Chang, Lizhu Wang, and Yongwei Zhao. "Geochronology and Origin of Quaternary Dacites from the Daliuchong Volcano in the Tengchong Volcanic Field (TVF), SE Tibetan Plateau." Minerals 14, no. 10 (2024): 990. http://dx.doi.org/10.3390/min14100990.

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Quaternary volcanoes from the southeastern Tibetan Plateau occur at the Tengchong volcanic field (TVF). The Daliuchong volcano is the largest volcano in the TVF, which has the most felsic compositions with explosive eruptions. The eruption history and origin of the Daliuchong volcano are a matter of debate. In the present paper, we report the groundmass K-Ar ages, whole-rock Sr-Nd-Pb-Hf isotopes, zircon U-Pb ages, and Hf-O isotopic compositions for the Daliuchong volcano to constrain its eruption history and petrogenesis. The groundmass K-Ar ages and zircon U-Pb ages indicate mid-Pleistocene (

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3

Linghu, Miaomiao, Zimu Li, Jinfeng Sun, and Jiheng Zhang. "Magma Source and Petrogenesis of the Early Cretaceous Granites in The Liaodong Peninsula: Evidence from In Situ Apatite Sr-Nd and Zircon Hf-O Isotopes." Minerals 13, no. 4 (2023): 545. http://dx.doi.org/10.3390/min13040545.

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Apatite Sr-Nd and zircon Hf-O isotopes are broadly used to trace magma sources and constrain magma evolution processes, further improving our understanding of the origin of granitoids. We present zircon U-Pb ages, whole-rock major and trace elements, and whole-rock Sr-Nd-Hf, zircon Hf-O, and apatite Sr-Nd isotopic data for the coarse-grained quartz monzonite, biotite monzogranite, and granite porphyry in the Yushulinzi pluton in the Liaodong Peninsula, the eastern North China Craton, to establish their magma sources and petrogenesis. The coarse-grained quartz monzonite, biotite monzogranite, a

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4

Roulleau, Emilie, and Ross Stevenson. "Geochemical and isotopic (Nd–Sr–Hf–Pb) evidence for a lithospheric mantle source in the formation of the alkaline Monteregian Province (Quebec)." Canadian Journal of Earth Sciences 50, no. 6 (2013): 650–66. http://dx.doi.org/10.1139/cjes-2012-0145.

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We present new major element and isotopic (Nd–Sr–Hf–Pb) data and modelling from alkaline rocks of the Monteregian Igneous Province of southern Quebec (Canada) that constrain the mantle source and the magmatic origin of these rocks. The whole-rock chemical composition of the intrusions is consistent with fractional crystallization of an assemblage of olivine ± clinopyroxene (± plagioclase) derived from ocean island basalts (OIB)-like magmas, and variations in the Sr and Nd isotope compositions suggest as much as 20% crustal contamination. The bulk of the Nd–Sr–Hf and Pb isotopic data form a tig

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5

Bogina, Maria, Boris Belyatsky, Evgenii Sharkov, Alexey Chistyakov, and Robert Krymsky. "Origin of the Middle Paleoproterozoic Tiksheozero Ultramafic-Alkaline-Carbonatite Complex, NE Fennoscandian Shield: Evidence from Geochemical and Isotope Sr-Nd-Hf-Pb-Os Data." Minerals 11, no. 6 (2021): 570. http://dx.doi.org/10.3390/min11060570.

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This article reports new geochemical, Sr-Nd-Hf-Pb and Re-Os data on the rocks of the Middle Paleoproterozoic (1.99 Ga) Tiksheozero ultramafic-alkaline-carbonatite complex confined to the northeastern margin of the Karelian Craton. We focus on the poorly studied silicate rocks. Based on petrographic and geochemical research, the silicate rocks are subdivided into two groups: an ultramafic-mafic series depleted in REE, and other incompatible elements and an alkaline series enriched in these elements. Isotope studies showed that all rocks have juvenile isotope signatures and were likely derived f

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6

Bell, K., A. N. Zaitsev, J. Spratt, S. Fröjdö, and A. S. Rukhlov. "Elemental, lead and sulfur isotopic compositions of galena from Kola carbonatites, Russia – implications for melt and mantle evolution." Mineralogical Magazine 79, no. 2 (2015): 219–41. http://dx.doi.org/10.1180/minmag.2015.079.2.01.

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AbstractGalena from four REE-rich (Khibina, Sallanlatvi, Seblyavr, Vuoriyarvi) and REE-poor (Kovdor) carbonatites, as well as hydrothermal veins (Khibina) all from the Devonian Kola Alkaline Province of northwestern Russia was analysed for trace elements and Pb and S isotope compositions. Microprobe analyses show that the only detectable elements in galena are Bi and Ag and these vary from not detectable to 2.23 and not detectable to 0.43 wt.% respectively. Three distinct galena groups can be recognized using Bi and Ag contents, which differ from groupings based on Pb isotope data. The Pb isot

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7

Xia, Shugang, Yu Qi, Shengyao Yu, et al. "Magma Mixing Origin for the Menyuan Granodioritic Pluton in the North Qilian Orogenic Belt, China." Minerals 15, no. 4 (2025): 391. https://doi.org/10.3390/min15040391.

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Magma mixing or mingling is not just a geological phenomenon that widely occurs in granitoid magmatism, but a complex dynamic process that influences the formation of mafic microgranular enclaves (MMEs) and the diversity of granitic rocks. Herein, we carried out a comprehensive study that encompassed the petrology, mineral chemistry, zircon U-Pb ages, Lu-Hf isotopes, whole-rock elements, and Sr-Nd isotope compositions of the Menyuan Granodioritic Pluton in the northern margin of the Qilian Block, to elucidate the petrogenesis and physical and chemical processes occurring during magma mixing. T

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8

CINTRON FRANQUI, NADJA OMARA, SUNG HI CHOI, and DER-CHUEN LEE. "Peridotites and basaltic rocks within an ophiolitic mélange from the SW igneous province of Puerto Rico: relation to the evolution of the Caribbean Plate." Geological Magazine 154, no. 1 (2016): 96–118. http://dx.doi.org/10.1017/s001675681500093x.

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AbstractThe geology of Puerto Rico is divided into three regions: the north, central and SW igneous provinces. Characterized by its Jurassic ophiolitic mélange basement, lithology of the SW Igneous Province (SIP) is not related to either of the other two provinces. The ophiolitic mélange is exposed in three peridotite belts: Monte del Estado, Rio Guanajibo and Sierra Bermeja. We present geochemical data to identify the tectonic setting of the SIP peridotite formation and its relation to the evolution of the Caribbean Plate. Comparisons of spinel Cr no. (13–21), Mg no. (63.3–69.6) and TiO2sugge

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9

Xu, Wang-Chun, Hong-Fei Zhang, Li-Ran Chen, Bi-Ji Luo, Liang Guo, and Jing-Liang Guo. "Transition from the lithospheric to asthenospheric mantle-derived magmatism in the Early Jurassic along eastern Bangong–Nujiang Suture, Tibet: Evidence for continental arc extension induced by slab rollback." GSA Bulletin 133, no. 1-2 (2020): 134–48. http://dx.doi.org/10.1130/b35554.1.

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Abstract The transition of the geochemical signature in mafic rocks along the eastern Bangong–Nujiang suture in Tibet contains important information about geodynamic processes in the upper mantle. This study recognized two episodes of Early Jurassic gabbros from the Kaqiong terrane, a microblock within the Bangong–Nujiang suture zone. Early gabbros (ca. 197–191 Ma) appear as lenses in the basement complex and were overprinted by amphibolite/granulite-facies metamorphism at ca. 180 Ma. Later undeformed hornblende gabbros (ca. 177–175 Ma) occur as dikes intruding into the basement complex. The e

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10

Garçon, Marion, Catherine Chauvel, Christian France-Lanord, Mara Limonta, and Eduardo Garzanti. "Which minerals control the Nd–Hf–Sr–Pb isotopic compositions of river sediments?" Chemical Geology 364 (January 2014): 42–55. http://dx.doi.org/10.1016/j.chemgeo.2013.11.018.

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11

Xu, Wen-Liang, Jia-Hui Chen, Ai-Hua Weng, et al. "Stagnant slab front within the mantle transition zone controls the formation of Cenozoic intracontinental high-Mg andesites in northeast Asia." Geology 49, no. 1 (2020): 19–24. http://dx.doi.org/10.1130/g47917.1.

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Abstract The geochemistry of Cenozoic intracontinental high-Mg andesites (HMAs) in northeast Asia, together with regional geophysical data, offers an opportunity to explore the genetic relationship between the formation of intracontinental HMAs and subduction of the Pacific plate. Compared with primary HMAs in arcs, Cenozoic intracontinental HMAs in northeast Asia have lower Mg# [100 × Mg/(Mg + Fe2+)] values (53–56) and CaO contents (5.8–6.6 wt%), higher alkali (Na2O + K2O) contents (5.15–6.45 wt%), and enriched Sr-Nd-Hf isotopic compositions (87Sr/86Sr = 0.7056–0.7059; εNd = −4.9 to −3.4; εHf

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12

Jweda, Jason, Louise Bolge, Cornelia Class, and Steven L. Goldstein. "High Precision Sr-Nd-Hf-Pb Isotopic Compositions of USGS Reference Material BCR-2." Geostandards and Geoanalytical Research 40, no. 1 (2015): 101–15. http://dx.doi.org/10.1111/j.1751-908x.2015.00342.x.

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13

Wang, Jing, Jun He, Jingxin Zhao, Yizeng Yang, and Fukun Chen. "Multiple-Stage Neoproterozoic Magmatism Recorded in the Zhangbaling Uplift of the Northeastern Yangtze Block: Evidence from Zircon Ages and Geochemistry." Minerals 13, no. 4 (2023): 562. http://dx.doi.org/10.3390/min13040562.

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The Yangtze Block records Neoproterozoic magmatism and sedimentation related to the breakup of Rodinia and is an important piece in the reconstruction of the supercontinent. However, the tectonic setting and position of this block in Rodinia remain a subject of debate. In the present study, we report the zircon U-Pb ages and Hf isotopic composition of zircon and geochemical and Nd-Pb isotopic compositions for meta-volcanic rocks exposed in the Zhangbaling uplift of the NE Yangtze Block. The volcanic rocks, dominated by rhyolite and dacite, belong to the calc-alkaline series and show geochemica

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14

Filipov, Petyo. "Mafic adakite-like magmatism at the Cretaceous–Paleogene boundary from the Northwest Rhodopes, Bulgaria." Review of the Bulgarian Geological Society 84, no. 3 (2023): 81–84. http://dx.doi.org/10.52215/rev.bgs.2023.84.3.81.

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New findings of monzogabbro and gabbro-monzodiorite dykes aged 62 Ma reveal the existence of magmatism in the gap between termination of the Late Cretaceous subduction-related and start of the early–middle Eocene post-collisional magmatic stages in the Rhodope Massif. Their geochemical compositions strongly resemble adakitic signature as well as hornblende and epidote geobarometers predicted lower crustal conditions (20–30 km depth) of crystallization. Detailed studies on U-Pb geochronology of zircon populations and Sr-Nd-Hf isotopic compositions point to significant assimilation of the local

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15

Zhong, Yun, Xu Zhang, Zhilei Sun, et al. "Sr–Nd–Pb–Hf Isotopic Constraints on the Mantle Heterogeneities beneath the South Mid-Atlantic Ridge at 18–21°S." Minerals 10, no. 11 (2020): 1010. http://dx.doi.org/10.3390/min10111010.

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In an attempt to investigate the nature and origin of mantle heterogeneities beneath the South Mid-Atlantic Ridge (SMAR), we report new whole-rock Sr, Nd, Pb, and Hf isotopic data from eight basalt samples at four dredge stations along the SMAR between 18°S and 21°S. Sr, Nd, and Pb isotopic data from SMAR mid-ocean ridge basalts (MORBs) at 18–21°S published by other researchers were also utilized in this study. The SMAR MORBs at 18–21°S feature the following ratio ranges: 87Sr/86Sr = 0.70212 to 0.70410, 143Nd/144Nd = 0.512893 to 0.513177, 206Pb/204Pb = 18.05 to 19.50, 207Pb/204Pb = 15.47 to 15

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16

Wang, Xiao-Jun, Li-Hui Chen, Albrecht W. Hofmann, et al. "Recycled ancient ghost carbonate in the Pitcairn mantle plume." Proceedings of the National Academy of Sciences 115, no. 35 (2018): 8682–87. http://dx.doi.org/10.1073/pnas.1719570115.

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The extreme Sr, Nd, Hf, and Pb isotopic compositions found in Pitcairn Island basalts have been labeled enriched mantle 1 (EM1), characterizing them as one of the isotopic mantle end members. The EM1 origin has been vigorously debated for over 25 years, with interpretations ranging from delaminated subcontinental lithosphere, to recycled lower continental crust, to recycled oceanic crust carrying ancient pelagic sediments, all of which may potentially generate the requisite radiogenic isotopic composition. Here we find that δ26Mg ratios in Pitcairn EM1 basalts are significantly lower than in n

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17

JIA, Xiaohui, Xiaodi WANG, Xiaofei QIU, and Wenqiang YANG. "Petrogenesis and Tectonic Implications of the Kwangsian Orogen: Constraints from Geochemistry and Sr‐Nd‐Hf Isotopic Compositions of the Early Paleozoic Peraluminous and Aluminous Granitoids in Northern Guangdong, SE China." Acta Geologica Sinica - English Edition 99, no. 3 (2025): 707–24. https://doi.org/10.1111/1755-6724.15296.

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AbstractThis study presents whole‐rock major, trace elements and Sr‐Nd‐Hf isotopic compositions, as well as zircon U‐Pb geochronological data, for the peraluminous and aluminous granitoids in northern Guangdong Province, South China, in order to investigate their petrogenesis and tectonic implications. The Qingzhou granodiorites (458.5–455.4 Ma) are peraluminous (A/CNK = 1.05–1.96). They have relatively high initial 87Sr/86Sr ratios (ISr = 0.7087–0.7148), low εNd(t) values (–11.2 to –10.1) and a variety of zircon εHf(t) values in the range –13.4 to +4.81. By contrast, the Damaoshan granodiorit

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18

Tan, Jun, Jun-Hao Wei, Shao-Qing Zhao, et al. "Petrogenesis of Late Triassic high-Mg diorites and associated granitoids with implications for Paleo-Tethys evolution in the northeast Tibetan Plateau." GSA Bulletin 132, no. 5-6 (2019): 955–76. http://dx.doi.org/10.1130/b35225.1.

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Abstract Recent research on Paleo-Tethys tectonics has identified a huge late Paleozoic to Mesozoic igneous belt that extends more than 2500 km in the northeast Tibetan Plateau. However, the magma genesis and evolution in this belt remains a subject of considerable debate. This paper presents a combination of zircon U-Pb ages, mineral compositions, major and trace element concentrations, and Sr-Nd-Hf isotopic data for the plutons across the Zhiduo arc belt that marks the site connecting different tectonic-magmatic units. The studied rocks from one quartz diorite, two granodiorite plutons, and

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19

Hopkinson, Thomas, Nigel Harris, Nick M. W. Roberts, et al. "Evolution of the melt source during protracted crustal anatexis: An example from the Bhutan Himalaya." Geology 48, no. 1 (2019): 87–91. http://dx.doi.org/10.1130/g47078.1.

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Abstract The chemical compositions of magmatic zircon growth zones provide powerful insight into evolving magma compositions due to their ability to record both time and the local chemical environment. In situ U-Pb and Hf isotope analyses of zircon rims from Oligocene–Miocene leucogranites of the Bhutan Himalaya reveal, for the first time, an evolution in melt composition between 32 and 12 Ma. The data indicate a uniform melt source from 32 Ma to 17 Ma, and the progressive addition of an older source component to the melt from at least ca. 17 Ma. Age-corrected ɛHf ratios decrease from between

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20

Delavault, Hélène, Catherine Chauvel, Emilie Thomassot, Colin W. Devey, and Baptiste Dazas. "Sulfur and lead isotopic evidence of relic Archean sediments in the Pitcairn mantle plume." Proceedings of the National Academy of Sciences 113, no. 46 (2016): 12952–56. http://dx.doi.org/10.1073/pnas.1523805113.

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The isotopic diversity of oceanic island basalts (OIB) is usually attributed to the influence, in their sources, of ancient material recycled into the mantle, although the nature, age, and quantities of this material remain controversial. The unradiogenic Pb isotope signature of the enriched mantle I (EM I) source of basalts from, for example, Pitcairn or Walvis Ridge has been variously attributed to recycled pelagic sediments, lower continental crust, or recycled subcontinental lithosphere. Our study helps resolve this debate by showing that Pitcairn lavas contain sulfides whose sulfur isotop

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21

Tao, Lu, Fa-Bin Pan, Rong Liu, Chong Jin, Bao-Jian Jia, and Xiaobo He. "Petrogenesis of the Cretaceous granitoids in Zhejiang, northeast South China Block and their implications for episodic retreat and roll-back of the Paleo-Pacific Plate." GSA Bulletin 132, no. 7-8 (2019): 1514–36. http://dx.doi.org/10.1130/b35426.1.

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Abstract Two Cretaceous granitoid belts (i.e., the northwest and southeast belts) have been identified in Zhejiang, northeast South China Block. In this study, seven granitoid plutons from both the two belts were collected for zircon U-Pb dating, whole-rock geochemistry, Sr-Nd isotope, and zircon Hf isotope analyses. Chronologically, the Longyou (132 Ma), Sucun (136 Ma), Shanghekou (131 Ma), and Huangshitan (ca. 126 Ma) plutons from the northwest belt display older magma crystallization age than those of the Xiaoxiong (100 Ma), Zhujiajian (108 Ma), and Qingbang island (108 Ma) plutons from the

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22

Yang, Hang, Peng Wu, Anlin Liu, and Feng Wang. "Petrogenesis of the Eocene Highly Fractionated Granite Porphyry with REE Tetrad Effect: An Example from Western Yunnan, Southeastern Tibetan Plateau." Minerals 13, no. 11 (2023): 1390. http://dx.doi.org/10.3390/min13111390.

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Highly fractionated granites are widely distributed in the crust and provide unique windows into magmatic evolution. This study reports petrography, zircon U–Pb ages, trace elemental, and Hf isotopic, as well as whole-rock elemental and Nd isotopic data of highly fractionated granite porphyries from the Shiguanshan area in western Yunnan, southeastern Tibet. The granite porphyries were formed at 34.0 ± 0.3 Ma in a post-collisional setting. They are strongly peraluminous (A/CNK = 1.95–2.80), have high SiO2 content (SiO2 = 78.16–79.13 wt.%) and zircon saturation temperatures (803–829 °C, average

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23

Martin, Adam P., Alan F. Cooper, Richard C. Price, Philip R. Kyle, and John A. Gamble. "Chapter 5.2b Erebus Volcanic Province: petrology." Geological Society, London, Memoirs 55, no. 1 (2021): 447–89. http://dx.doi.org/10.1144/m55-2018-80.

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AbstractIgneous rocks of the Erebus Volcanic Province have been investigated for more than a century but many aspects of petrogenesis remain problematic. Current interpretations are assessed and summarized using a comprehensive dataset of previously published and new geochemical and geochronological data. Igneous rocks, ranging in age from 25 Ma to the present day, are mainly nepheline normative. Compositional variation is largely controlled by fractionation of olivine + clinopyroxene + magnetite/ilmenite + titanite ± kaersutite ± feldspar, with relatively undifferentiated melts being generate

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24

Fedorov, P. I., A. V. Koloskov, B. V. Beliatsky, and L. B. Golovneva. "SPATIOTEMPORAL CHANGE OF DEEP SOURCES FOR CENOZOIC VOLCANIC ROCKS IN THE EASTERN KORYAK HIGHLANDS." Tikhookeanskaya Geologiya 41 (2022): 3–19. http://dx.doi.org/10.30911/0207-4028-2022-41-3-3-19.

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A spatiotemporal analysis of the trace element ratios and the isotopic composition of Sr, Nd and Pb in Cenozoic post-accretionary volcanic rocks in the east of the Koryak Highlands (Northeastern Russia) has been carried out. The Early Paleogene volcanic complex is shown to be represented by moderately Ti-rich aluminous tholeiites with elevated contents of high field strength elements (HFSE) (except for Ta and Nb), which makes them similar to E-MORBs. Low (La/Yb)n and high Zr/Nb (25–35) ratios characterize one of the source components as depleted and similar to MORBs. At the same time, low rati

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Zhang, Yifan, Xu Ma, Jiafu Chen, Yuqi Liu, Yi Zhang, and Yongwei Ma. "Petrogenesis and Tectonic Significance of Middle Jurassic Mafic–Ultramafic Cumulate Rocks in Weiyuanpu, Northern Liaoning, China: Insights from Zircon Geochronology and Isotope Geochemistry." Minerals 15, no. 6 (2025): 651. https://doi.org/10.3390/min15060651.

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The tectonic evolution of the Paleo-Pacific Ocean and the destruction mechanism of the North China Craton (NCC) are still controversial. In this study, we conducted zircon U-Pb dating, whole-rock geochemistry, and Sr-Nd-Hf isotope analyses on the Weiyuanpu mafic–ultramafic intrusions in the eastern segment of the northern margin of the NCC to discuss their petrogenesis and tectonic implications. The Weiyuanpu mafic–ultramafic intrusions consist of troctolite, hornblendite, hornblende gabbro, gabbro, and minor diorite, anorthosite, characterized by cumulate structure. The main crystallization s

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Drolma, Yangchen, Kaijun Li, Yubin Li, et al. "Geochronology, Geochemistry, and In Situ Sr-Nd-Hf Isotopic Compositions of a Tourmaline-Bearing Leucogranite in Eastern Tethyan Himalaya: Implications for Tectonic Setting and Rare Metal Mineralization." Minerals 14, no. 8 (2024): 755. http://dx.doi.org/10.3390/min14080755.

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Himalayan leucogranite is an excellent target for understanding the orogenic process of the India–Asia collision, but its origin and tectonic significance are still under debate. An integrated study of geochronology, geochemistry, and in situ Sr-Nd-Hf isotopes was conducted for a tourmaline-bearing leucogranite in the eastern Tethyan Himalaya using LA-ICP-MS, X-ray fluorescence spectroscopy, and ICP-MS and LA-MC-ICP-MS, respectively. LA-ICP-MS U-Pb dating of zircon and monazite showed that it was emplaced at ~19 Ma. The leucogranite had high SiO2 and Al2O3 contents ranging from 73.16 to 73.99

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Li, Min, Houtian Xin, Bangfang Ren, Yunwei Ren, and Wengang Liu. "Early–Middle Permian post-collisional granitoids in the northern Beishan orogen, northwestern China: evidence from U–Pb ages and Sr–Nd–Hf isotopes." Canadian Journal of Earth Sciences 57, no. 6 (2020): 681–97. http://dx.doi.org/10.1139/cjes-2019-0088.

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The geochemistry and Sr–Nd isotope, zircon U–Pb, and zircon Hf isotope compositions are reported for monzogranites and granodiorites from the Hazhu area in the northern Beishan orogen, northwestern China. Zircon U–Pb dating yielded ages of 270.1 ± 1.1 and 277.4 ± 1.2 Ma for the monzogranites and 263.6 ± 1.2 and 262.2 ± 1.1 Ma for the granodiorites. These monzogranites and granodiorites are metaluminous to weakly peraluminous I-type and belong to mid-K calc-alkaline and high-K calc-alkaline series. They exhibit high Mg# values and moderate degrees of differentiation (D.I. = 70.7–88.1). They are

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Jagoutz, Oliver, Pierre Bouilhol, Urs Schaltegger, and Othmar Müntener. "The isotopic evolution of the Kohistan Ladakh arc from subduction initiation to continent arc collision." Geological Society, London, Special Publications 483, no. 1 (2018): 165–82. http://dx.doi.org/10.1144/sp483.7.

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AbstractMagmatic arcs associated with subduction zones are the dominant active locus of continental crust formation, and evolve in space and time towards magmatic compositions comparable to that of continental crust. Accordingly, the secular evolution of magmatic arcs is crucial to the understanding of crust formation processes. In this paper we present the first comprehensive U–Pb, Hf, Nd and Sr isotopic dataset documenting c. 120 myr of magmatic evolution in the Kohistan-Ladakh paleo-island arc. We found a long-term magmatic evolution that is controlled by the overall geodynamic of the Neo-T

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Bai, Zhihan, Yang Yang, Xijun Liu, et al. "A Geochemical and Sr–Nd–Hf–O Isotopic Study of the Early Silurian Shandan Adakites in the Longshoushan Area: Implications for the Collisional Setting of the Proto–Tethyan North Qilian Orogen, Northwest China." Minerals 15, no. 4 (2025): 352. https://doi.org/10.3390/min15040352.

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The North Qilian Orogen experienced a series of late Neoproterozoic to early Paleozoic tectonic events, including the opening and closure of the Proto-Tethyan Qilian Ocean, as well as post-subduction processes. This study investigated the Shandan adakites in the Longshoushan area of the North Qilian Orogen, focusing on zircon U–Pb geochronology, whole-rock geochemistry, and Sr–Nd–Hf–O isotopic compositions. The Shandan adakites yield ages of ca. 446–440 Ma, suggesting they crystallized during the collision between the Alxa and Qilian blocks following the closure of the Proto-Tethyan North Qili

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Szilas, Kristoffer, J. Elis Hoffmann, Christina Hansmeier, et al. "Sm-Nd and Lu-Hf isotope and trace-element systematics of Mesoarchaean amphibolites, inner Ameralik fjord, southern West Greenland." Mineralogical Magazine 79, no. 4 (2015): 857–76. http://dx.doi.org/10.1180/minmag.2015.079.4.02.

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AbstractFragmented supracrustal rocks are typical components of Archaean high-grade gneiss terranes, such as those in the North Atlantic Craton. Here we present the first major, trace element and Nd-Hf isotope data for amphibolites collected in the yet poorly studied southern inner Ameralik fjord region of southern West Greenland. In addition, new U-Pb zircon ages were obtained from the surrounding TTG gneisses.Based on their trace-element patterns, two different groups of amphibolites can be distinguished. Following screening for post-magmatic alteration and outlying ε values, a reduced sampl

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Wang, Yuejun, Yuzhi Zhang, Xin Qian, et al. "Ordo-Silurian assemblage in the Indochina interior: Geochronological, elemental, and Sr-Nd-Pb-Hf-O isotopic constraints of early Paleozoic granitoids in South Laos." GSA Bulletin 133, no. 1-2 (2020): 325–46. http://dx.doi.org/10.1130/b35605.1.

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Abstract In order to verify the early Paleozoic accretionary assemblage in the Indochina interior and constrain the Prototethyan tectonic evolution in Southeast Asia, this study presents a set of new U-Pb geochronological, elemental, and Sr-Nd-Pb-Hf-O isotopic data for the fifty-two representative granitoids in South Laos. The granitoids from the Kontum terrane, Tam Ky-Phuoc Son tectonic zone, and southern Truong Son igneous zone in South Laos yield the crystallization ages of 464–485 Ma, 455–471 Ma, and 427–446 Ma, respectively, with a northerly younging trend within the Indochina interior. T

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Choi, Sung Hi, Samuel B. Mukasa, Alexandre V. Andronikov, and Maria C. Marcano. "Extreme Sr–Nd–Pb–Hf isotopic compositions exhibited by the Tinaquillo peridotite massif, Northern Venezuela: implications for geodynamic setting." Contributions to Mineralogy and Petrology 153, no. 4 (2006): 443–63. http://dx.doi.org/10.1007/s00410-006-0159-3.

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Lu, Jia, Chen Zhang, and Dongdong Liu. "Geochronological, Geochemical and Sr-Nd-Hf Isotopic Studies of the A-type Granites and Adakitic Granodiorites in Western Junggar: Petrogenesis and Tectonic Implications." Minerals 10, no. 5 (2020): 397. http://dx.doi.org/10.3390/min10050397.

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Late Carboniferous magmatism in the Western Junggar region of the Central Asian Orogenic Belt (CAOB) provides a critical geological record of regional tectonic and geodynamic history. In this study, we determined the zircon U-Pb isotopic compositions, bulk-rock Sr-Nd-Hf isotopic compositions, and major and trace element geochemistry of two granitic bodies in the Western Junggar, with the aim of constraining their emplacement ages, magmatic origin, and geodynamic significance. Radiometric ages indicate that the plutons were emplaced during the Late Carboniferous (322–307 Ma). Plutons in the Nor

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Sun, Jungang, Ting Liang, Xiaohuang Liu, Xiong Zhang, Bei Liu, and Guorong Quan. "Triassic Thermal Pulse of TARIM Mantle Plume: Evidence from Geochronology, Geochemistry, and Nd Isotopes of the Mafic Dikes from the Halaqi Area, Xinjiang, China." Minerals 14, no. 3 (2024): 283. http://dx.doi.org/10.3390/min14030283.

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Owing to the paucity of research on synchronous mafic rocks in the Tarim Basin, the late Paleozoic–early Mesozoic tectonic development of this region is not well defined. The Halaqi region is situated on Tarim’s northwest edge, and numerous mafic dikes can be found cross-cutting the Permian strata. The whole-rock geochemistry, zircon U–Pb age, and Sr–Nd isotopic signature of these mafic rocks have never been reported before, and this contribution can offer geochronological and petrogenetic investigations that provide fresh insight into the geodynamic development of the area. Major oxide conten

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Mikuni, Kazuto, Naoto Hirano, Shiki Machida, et al. "Contribution of carbonatite and recycled oceanic crust to petit-spot lavas on the western Pacific Plate." Solid Earth 15, no. 2 (2024): 167–96. http://dx.doi.org/10.5194/se-15-167-2024.

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Abstract. Petit-spot volcanoes, occurring due to plate flexure, have been reported globally. As the petit-spot melts ascend from the asthenosphere, they provide crucial information of the lithosphere–asthenosphere boundary. Herein, we examined the lava outcrops of six monogenetic volcanoes formed by petit-spot volcanism in the western Pacific. We then analyzed the 40Ar/39Ar ages, major and trace element compositions, and Sr, Nd, and Pb isotopic ratios of the petit-spot basalts. The 40Ar/39Ar ages of two monogenetic volcanoes were ca. 2.6 Ma (million years ago) and ca. 0 Ma. The isotopic compos

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Liu, Huanan, Feng Yuan, Shengjin Zhao, Mingjing Fan, and Xiangguo Guo. "SHRIMP U–Pb Zircon Ages, Geochemistry and Sr–Nd–Hf Isotope Systematics of the Zalute Intrusive Suite in the Southern Great Xing’an Range, NE China: Petrogenesis and Geodynamical Implications." Minerals 10, no. 10 (2020): 927. http://dx.doi.org/10.3390/min10100927.

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An integrated zircon geochronological, elemental geochemical, and Sr–Nd–Hf isotopic investigation was carried out on a suite of dioritic–granitic rocks at Zalute in the southern Great Xing’an Range (SGXR), NE China, in order to probe the source and petrogenesis of these granitoid rocks and further constrain the geodynamical setting of early Early Cretaceous magmatism. The results of Sensitive High-Resolution Ion Micro Probe (SHRIMP) zircon U–Pb dating reveal that the Zalute dioritic–granitic rocks have a consistent crystallization age of ca. 137–136 Ma, consisting of quartz diorite (136 ± 1.4

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Chen, Wei, Xinbiao Lü, Xiaofeng Cao, and Wenjia Ai. "Petrogenesis and tectonic setting of the Dapingliang Late Neoproterozoic magmatic rocks in the eastern Kuluketage Block: geochronological, geochemical and Sr–Nd–Pb–Hf isotopic implications." Geological Magazine 157, no. 2 (2019): 173–200. http://dx.doi.org/10.1017/s0016756819000530.

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AbstractIn the past ten years, a great deal of geological study has been reported on the magmatic rocks exposed in the central and western region of the Kuluketage Block, while similar research in the eastern region has rarely been reported. In this paper, we report zircon U–Pb geochronological, zircon Lu–Hf isotopic, whole-rock elemental and Sr–Nd–Pb isotopic data for the Dapingliang intermediate-acid intrusive rocks in the eastern Kuluketage Block, in order to evaluate its petrogenesis and tectonic significance. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) zircon U

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WU, FU-YUAN, ROGER H. MITCHELL, QIU-LI LI, CHANG ZHANG, and YUE-HENG YANG. "Emplacement age and isotopic composition of the Prairie Lake carbonatite complex, Northwestern Ontario, Canada." Geological Magazine 154, no. 2 (2016): 217–36. http://dx.doi.org/10.1017/s0016756815001120.

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AbstractAlkaline rock and carbonatite complexes, including the Prairie Lake complex (NW Ontario), are widely distributed in the Canadian region of the Midcontinent Rift in North America. It has been suggested that these complexes were emplaced during the main stage of rifting magmatism and are related to a mantle plume. The Prairie Lake complex is composed of carbonatite, ijolite and potassic nepheline syenite. Two samples of baddeleyite from the carbonatite yield U–Pb ages of 1157.2±2.3 and 1158.2±3.8 Ma, identical to the age of 1163.6±3.6 Ma obtained for baddeleyite from the ijolite. Apatite

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Wei, Pengfei, Dapeng Li, Ke Geng, et al. "Petrogenesis of the Weideshan Pluton in Jiaodong and Its Implications for Gold Polymetallic Mineralization: Constraints from Zircon U-Pb-Hf Isotopes, Petrogeochemistry, and Whole-Rock Sr-Nd Isotopes." Minerals 14, no. 1 (2023): 7. http://dx.doi.org/10.3390/min14010007.

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The Early Cretaceous Weideshan granites are associated with large-scale Au and polymetallic Cu-Mo-Pb-Zn mineralization. To investigate the petrogenesis of the Weideshan granite and constrain its tectonic setting during the Early Cretaceous, we conducted a zircon U-Pb-Hf isotope and whole-rock geochemical and Sr-Nd isotopic study of the granite. In situ zircon U-Pb dating of three granite samples yielded Early Cretaceous ages of 112.83 ± 0.80, 112.64 ± 0.91, and 111.82 ± 0.78 Ma. The samples had high-K calc-alkaline compositions and were enriched in the light rare earth and large-ion lithophile

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Zheng, Hao, Li-Feng Zhong, Argyrios Kapsiotis, Guan-Qiang Cai, Zhi-Feng Wan, and Bin Xia. "Post-spreading Basalts from the Nanyue Seamount: Implications for the Involvement of Crustal- and Plume-Type Components in the Genesis of the South China Sea Mantle." Minerals 9, no. 6 (2019): 378. http://dx.doi.org/10.3390/min9060378.

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Fresh samples of basalts were collected by dredging from the Nanyue intraplate seamount in the Southwest sub-basin of the South China Sea (SCS). These are alkali basalts displaying right-sloping, chondrite-normalized rare earth element (REE) profiles. The investigated basalts are characterized by low Os content (60.37–85.13 ppt) and radiogenic 187Os/188Os ratios (~0.19 to 0.21). Furthermore, 40Ar/39Ar dating of the Nanyue basalts showed they formed during the Tortonian (~8.3 Ma) and, thus, are products of (Late Cenozoic) post-spreading volcanism. The Sr–Nd–Pb–Hf isotopic compositions of the Na

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Gao, Nan, Yingkui Xu, Dan Zhu, et al. "Isotopic decoupling of K from Sr and Nd in the Saima alkaline complex, NE China: interactions of cratonic roots and asthenosphere." Geological Magazine, April 5, 2023, 1–8. http://dx.doi.org/10.1017/s001675682300016x.

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Abstract We report high-precision K isotopes, apatite U–Pb ages, whole-rock elements and Sr–Nd isotopes for the Saima nephelite syenite in the North China Craton. Trace-element and Sr–Nd–Hf–O isotope data indicate the presence of subducting sediments in the source region, while K isotopic compositions show a narrow range between –0.54 ‰ and –0.28 ‰, with an average of –0.41 ± 0.06 ‰, identical to the value of the asthenosphere. The nearly identical K isotopic compositions are low probability events compared with the K isotopic compositions of island arc lavas reported previously (–1.55 ‰ to +0

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Yang, Lei, Jia-Min Wang, Xiao-Chi Liu, Gautam P. Khanal, and Fu-Yuan Wu. "Sr-Nd-Hf Isotopic Disequilibrium During the Partial Melting of Metasediments: Insight From Himalayan Leucosome." Frontiers in Earth Science 10 (May 5, 2022). http://dx.doi.org/10.3389/feart.2022.891960.

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Radiogenic isotopes of granitoids are widely applied to fingerprint the source of granitoids and study the magma mingling and assimilation processes, aiming to decipher the planetary differentiation. This weapon is based on the assumption that crustal melts inherit the radiogenic isotopes of protoliths. However, complicated melting processes in the crust would drive the radiogenic isotopes of melt away from the source, thus calling for a clear understanding of the behaviors of radiogenic isotopes during crustal melting. This study investigated the joint behavior of Rb-Sr, Sm-Nd, and Lu-Hf isot

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Wei, Wei, Xin-Biao Lv, and Xiang-Dong Wang. "The granite porphyry hidden in the Shuangjianzishan deposit, southern Great Xing’an Range, NE China: geochronology, isotope geochemistry and tectonic implications." Geological Magazine, October 8, 2020, 1–15. http://dx.doi.org/10.1017/s0016756820001065.

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Abstract The Shuangjianzishan vein-type Ag-Pb-Zn deposit in the southern Great Xing’an Range (GXR), NE China, is hosted in the slate of the Lower Permian Dashizhai Formation intruded by granite porphyry. In this paper, U–Pb zircon ages and bulk-rock and isotope (Sr, Nd, Pb and Hf) compositions are reported to investigate the derivation, evolution and geodynamic setting of this granite porphyry. It is closely associated with Pb-Zn-Ag mineralization in the southern GXR and contains important geological information relating to regional tectonic evolution. Laser ablation – inductively coupled plas

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Tao, Lu, Biji Luo, Hongfei Zhang, et al. "Multiple mantle metasomatism recorded by Triassic post-collisional ultrapotassic and tholeiitic magmatism in West Qinling, NW China." Journal of the Geological Society, August 20, 2024. http://dx.doi.org/10.1144/jgs2024-020.

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Mantle properties and metasomatic processes, together with interlayer interactions at orogenic belts are still under debate. The post-collisional magmatic rocks could provide secondhand constraints on these issues. Hereby, an integrated geochronologic, geochemical, and isotopic study was conducted on post-collisional Zhanwa dolerites, Dashui granodiorite–monzonite-monzogabbro complex, and Jiuzigou pyroxenite–syenite complex at West Qinling. The Zhanwa dolerites, being tholeiitic with flat trace elemental pattern, were mixtures of melts from asthenospheric and oceanic slab-fluid-metasomatized l

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Bollen, Elizabeth M., Harold H. Stowell, Ruth F. Aronoff, et al. "Reconciling garnet Lu-Hf and Sm-Nd, and monazite U-Pb ages for a prolonged metamorphic event, northern New Mexico." Journal of Petrology, April 4, 2022. http://dx.doi.org/10.1093/petrology/egac031.

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Abstract Garnet Sm-Nd and Lu-Hf isotopic data are increasingly used in tandem to characterize tectono-metamorphic events and their duration because the two chronometers may yield a progression from older Lu-Hf to younger Sm-Nd ages. In this contribution, we utilize garnet compositional zoning and monazite U-Pb ages to evaluate explanations for differences in garnet Sm-Nd and Lu-Hf ages for low- to mid-amphibolite facies rocks from the Picuris and Tusas Mountains, New Mexico. Ten Sm-Nd ages, eight Lu-Hf garnet ages (6 previously published), and four matrix monazite U-Pb dates span 1422–1370 Ma,

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Lei, Ming, Jianlin Chen, and Maoliang Zhang. "Origin of Late Cenozoic Basaltic Magmatism in Inner Mongolia, NE China: Constraints From Sr–Nd–Hf–Pb–Mo–He Isotopes." Geochemistry, Geophysics, Geosystems 24, no. 12 (2023). http://dx.doi.org/10.1029/2023gc011166.

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AbstractThis paper presents a study of the late Cenozoic Chifeng basalts (CBs) of NE China, including their olivine He isotopic compositions, whole‐rock major‐ and trace‐element contents, and whole‐rock Sr–Nd–Hf–Pb–Mo isotopic compositions, with the aim of constraining their mantle source. Results show that the basalts have high MgO, low CaO contents, and high FeOT/MnO values, which indicate that their mantle lithology was most likely pyroxenite. The CBs also exhibit ocean‐island‐basalt‐like trace‐element patterns (e.g., enrichment in light rare earth elements and high‐field‐strength elements)

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Williamson, Nicole M. B., Dominique Weis, James S. Scoates та Michael O. Garcia. "Emergence of the Loa Mantle Component in the Hawaiian Islands Based on the Geochemistry of Kauaʻi Shield‐Stage Basalts". Geochemistry, Geophysics, Geosystems 24, № 10 (2023). http://dx.doi.org/10.1029/2023gc010980.

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AbstractKauaʻi shield‐stage lavas are central to understanding the origin of the distinct Kea and Loa Hawaiian geochemical trends in Hawaiian basalts. These trends reflect two geochemically distinct sides in the Hawaiian plume, with Loa to the southwest and Kea to the northeast. The geochemistry and Sr‐Nd‐Hf isotopic compositions of shield‐stage lavas from Kauaʻi show a transition from Kea to Loa across the island with the Loa mantle source becoming dominant as the volcano grew. This geochemical transition is gradual from west to east Kauaʻi and supports the hypothesis that the Kauaʻi volcano

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Jung, S., J. A. Pfänder, O. Nebel, et al. "High-K andesites as witnesses of a continental arc system in the Western Alps, Italy: constraints from HFSE and Hf–Nd–Sr–Pb–O isotope systematics." Contributions to Mineralogy and Petrology 178, no. 2 (2023). http://dx.doi.org/10.1007/s00410-022-01983-w.

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AbstractGeochemical and isotopic data are presented for ~ 32 Ma-old high-K andesites and dacites from the Alpine Chain. The samples consist of plagioclase, amphibole, titanomagnetite and rare biotite and quartz. Geochemical and isotope data indicate that slab-derived fluids, sediment melts and presumably AFC processes involving continental crust played a key role in the petrogenesis of the high-K rocks. A contribution of fluids is suggested based on the overall enrichment of large-ion lithophile elements and related high Ba/La, Ba/Zr, Ba/Th, Ba/Nb and Pb/Nd, sometimes distinctively higher than

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Zhang, Yuzhi, Xiaoqing Yu, Yuejun Wang, et al. "Reconstructing the East Palaeotethyan assemblage boundary at West Indonesia: Constraints from Triassic granitoids in Bangka and Belitung islands." Geological Society, London, Special Publications 531, no. 1 (2022). http://dx.doi.org/10.1144/sp531-2022-144.

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Abstract The geodynamic evolution of the Palaeotethyan Ocean is key for understanding the development of the Pangea. The main continents of Southeast Asia were welded together in response to the closure of Palaeotethyan Ocean. However, the precise location of the sutures and timing of the collisions are poorly constrained, especially the southward continuation from Peninsular Malaysia into west Indonesia. This study presents new zircon U-Pb geochronological, petrologic, elemental and Sr-Nd-Pb-Hf-O isotopic data in order to investigate the origin and tectonic setting of the granitoids from the

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Chen, Jing-Yuan, Jin-Hui Yang, Ji-Heng Zhang, Jin-Feng Sun, Yu-Sheng Zhu, and Eva Hartung. "Generation of Cretaceous high-silica granite by complementary crystal accumulation and silicic melt extraction in the coastal region of southeastern China." GSA Bulletin, April 26, 2021. http://dx.doi.org/10.1130/b35745.1.

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It is generally hypothesized that high-silica (SiO2 &gt; 75 wt%) granite (HSG) originates from crystal fractionation in the shallow crust. Yet, identifying the complementary cumulate residue of HSG within plutons remains difficult. In this work, we examine the genetic links between the porphyritic monzogranite and HSG (including porphyritic granite, monzogranite, and alkali feldspar granite) from the coastal area of southeastern China using detailed zircon U-Pb ages, trace elements, Hf-O isotopes, and whole-rock geochemistry and Nd-Hf isotopic compositions. Zircon U-Pb ages indicate that t

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