Paleoproterozoic tectonic evolution from subduction to collision of the Khondalite Belt in North China: Evidence from multiple magmatism in the Qianlishan Complex

Li，Wenxuan1; Yin，Changqing1,2; Lin，Shoufa3; Li，Wenjing4; Gao，Peng1; Zhang，Jian1,2; Qian，Jiahui1; Qiao，Hengzhong5

2022

10.1016/j.precamres.2021.106471

PRECAMBRIAN RESEARCH   影响因子和分区

0301-9268

1872-7433

This study presents detailed petrology, major and trace element chemistry, Sr-Nd isotope, and in-situ zircon U-Pb dating and Hf-O isotopes on granites from the Qianlishan Complex of the Khondalite Belt in North China. Zircon SIMS U-Pb data indicate three episodes of Paleoproterozoic magmatism at ca. 2.06 Ga, 1.95 Ga and 1.92 Ga. Of those, the ca. 2.06 Ga hornblende monzogranites and fine-grained potassic granites display typical features of A-type granite, represented by metaluminous affinity, high FeO/MgO ratios (3.29–5.63), and high Ga/Al and Zr + Nb + Ce + Y values with high zircon saturation temperatures (916–1000 °C). Moreover, they have positive zircon εHf values of +0.29 to +5.01 and homogenous δO values of 5.11–5.87 ‰, probably derived from the partial melting of calc-alkaline granitoids without addition of supracrustal rocks. The ca. 1.95 Ga garnet-bearing granites contain peraluminous minerals of garnet and muscovite and have high ASI index (>1.1) and δO values (7.14–9.18 ‰), indicating S-type granite. Their negative whole-rock εNd(t) values (−2.87 to −2.81) and zircon εHf(t) values (−4.06 to +1.29) suggest a source of ancient supracrustal rocks. The ca. 1.92 Ga coarse-grained potassic granites present metaluminous and magnesian signatures of I-type granite, including low A/CNK and FeO/MgO ratios. Their negative εHf(t) values (−5.00 to −1.64) and homogenous δO values (5.20–6.00%) suggest that the original magma was derived primarily from enriched lower crust. The results, combined with regional geology and previous studies, establish a prolonged magmatic-metamorphic evolution of the Khondalite Belt from subduction to collision, involving ca. 2.3–2.0 Ga subduction-related arc magmatism, ca. 1.95 Ga syn-collisional high-pressure high-temperature crustal anatexis, and ca. 1.92 Ga post-collisional magmatism and synchronous ultrahigh temperature metamorphism.

A-, S- and I-type granites Magmatic evolution Nd-Hf-O isotope North China Craton Partial melting

SCI

英语

其他

National Natural Science Foundation of China[41972216,41890831,41888101] ; Guangdong Province Introduced Innovative Research & Development Team[2016ZT06N331] ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311020002]

Geology

Geosciences, Multidisciplinary

WOS:000725208700003

ELSEVIER

GEOSCIENCES

2-s2.0-85119899255

Scopus

1.Guangdong Provincial Key Laboratory of Geodynamics and Geohazards,School of Earth Sciences and Engineering,Sun Yat-Sen University,Guangzhou,510275,China
2.Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),Zhuhai,519082,China
3.Department of Earth and Environmental Sciences,University of Waterloo,Waterloo,N2L 3G1,Canada
4.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China
5.Leshan Normal University,Leshan,614000,China

Li，Wenxuan,Yin，Changqing,Lin，Shoufa,et al. Paleoproterozoic tectonic evolution from subduction to collision of the Khondalite Belt in North China: Evidence from multiple magmatism in the Qianlishan Complex[J]. PRECAMBRIAN RESEARCH,2022,368.

Li，Wenxuan.,Yin，Changqing.,Lin，Shoufa.,Li，Wenjing.,Gao，Peng.,...&Qiao，Hengzhong.(2022).Paleoproterozoic tectonic evolution from subduction to collision of the Khondalite Belt in North China: Evidence from multiple magmatism in the Qianlishan Complex.PRECAMBRIAN RESEARCH,368.

Li，Wenxuan,et al."Paleoproterozoic tectonic evolution from subduction to collision of the Khondalite Belt in North China: Evidence from multiple magmatism in the Qianlishan Complex".PRECAMBRIAN RESEARCH 368(2022).