Mineralogical, Geochronological, and Geochemical Characteristics of Early Cretaceous Granite in South China: Implications for Tectonic Evolution and REE Mineralization

One of the most important geological features of South China are the widespread Mesozoic igneous rocks that play a key role in revealing the tectonic evolution of South China. Due to the thick covering of vegetation and Quaternary sediments, the early Cretaceous magmatism in southwestern South China is still not well constrained. In this paper, we report newly identified early Cretaceous granites in Guangxi, South China. Zircon U–Pb dating results showed that representative fine-grained and coarse-grained granites in northeastern Guangxi indicate the early Cretaceous ages of 141 ± 3 Ma and 141 ± 4 Ma, respectively. Geochemically, both fine-grained and coarse-grained granites had high 10,000 × Ga/Al ratios and belonged to A-type granite. They had undergone high degrees of magma differentiation, as evidenced by extremely negative Sr, Ba, and Eu anomalies. They had high REE (rare earth elements) contents (>451 ppm). The fine-grained granites were characterized by higher HREE (heavy rare earth elements) contents, lower LREE (light rare earth elements) contents, and lower LREE/HREE ratios than the coarse-grained granites. Integrated with regional geological data, the early Cretaceous granites were likely formed in a back-arc extensional environment in response to the increased subduction angle of the Paleo-Pacific plate. Different REE contents in the fine- and coarse-grained granites may be a result of fractional crystallization. Magma differentiation and hydrothermal alteration might have played an important role in REE mineralization of the early Cretaceous granites in Guangxi.

[1]  M. Ren,et al.  Petrogenesis of early cretaceous intermediate to felsic rocks in Shanghai, South China: Magmatic response to Paleo-Pacific plate subduction , 2022, Tectonophysics.

[2]  Shuang Yan,et al.  Granitic magma evolution to magmatic-hydrothermal processes vital to the generation of HREEs ion-adsorption deposits: Constraints from zircon texture, U-Pb geochronology, and geochemistry , 2022, Ore Geology Reviews.

[3]  L. Bagas,et al.  Geochemical and REE mineralogical characteristics of the Zhaibei Granite in Jiangxi Province, southern China, and a model for the genesis of ion-adsorption REE deposits , 2021, Ore Geology Reviews.

[4]  Xinquan Liang,et al.  A new insight into the eastern extension of the Proto-Tethyan margin of Gondwana by Early Paleozoic volcanic rocks in South China , 2021 .

[5]  Xiaoliang Liang,et al.  Characteristics and genesis of ion adsorption type REE deposits in the weathering crusts of metamorphic rocks in Ningdu, Ganzhou, China , 2021 .

[6]  F. Guo,et al.  Cretaceous crustal melting records of tectonic transition from subduction to slab rollback of the Paleo-Pacific Plate in SE China , 2021 .

[7]  Wei-dong Sun,et al.  Early cretaceous transformation from Pacific to Neo-Tethys subduction in the SW Pacific Ocean: Constraints from Pb-Sr-Nd-Hf isotopes of the Philippine arc , 2020 .

[8]  Huichuan Liu,et al.  Neoproterozoic active margin of the SW South China Block: Constraints from U Pb ages, Sr Nd isotopes and geochemical data for the gabbro and granodiorite along the Ailaoshan tectonic belt , 2020 .

[9]  N. Botelho,et al.  Geochemical and mineralogical characteristics of REEY occurrences in the Mocambo Granitic Massif tin-bearing A-type granite, central Brazil, and its potential for ion-adsorption-type REEY mineralization , 2019, Ore Geology Reviews.

[10]  Huichuan Liu,et al.  Break-away of South China from Gondwana: Insights from the Silurian high-Nb basalts and associated magmatic rocks in the Diancangshan-Ailaoshan fold belt (SW China) , 2018, Lithos.

[11]  Yun Zhou,et al.  New precise zircon U-Pb and muscovite 40Ar-39Ar geochronology of the Late Cretaceous W-Sn mineralization in the Shanhu orefield, South China , 2017 .

[12]  C. Bern,et al.  Ion-adsorption REEs in regolith of the Liberty Hill pluton, South Carolina, USA: An effect of hydrothermal alteration , 2017 .

[13]  A. Kröner,et al.  Late Cretaceous lithospheric extension in SE China: Constraints from volcanic rocks in Hainan Island , 2015 .

[14]  Peter A. Cawood,et al.  Neoproterozoic crustal growth of the Southern Yangtze Block: Geochemical and zircon U-Pb geochronological and Lu-Hf isotopic evidence of Neoproterozoic diorite from the Ailaoshan zone , 2015 .

[15]  Jiangang Fu,et al.  Isotopic geochemistry, zircon U–Pb ages and Hf isotopes of A-type granites from the Xitian W–Sn deposit, SE China: Constraints on petrogenesis and tectonic significance , 2015 .

[16]  Yu Hong-qin.  Weathered material granularity and geochemistry of weathering crust in ion-adsorption type REE deposit——A case from Yangminchong of Guposhan , 2015 .

[17]  S. Johnston,et al.  Cretaceous tectonic evolution of South China: A preliminary synthesis , 2014 .

[18]  Peter A. Cawood,et al.  Neoproterozoic subduction along the Ailaoshan zone, South China: Geochronological and geochemical evidence from amphibolite , 2014 .

[19]  Yu Yon.  Zircon LA-ICP-MS U-Pb and Sericite ~(40)Ar/~(39)Ar Ages at Shanhu W-Sn Deposit, Guangxi Province, China, and its Implications for W-Sn Minerlization , 2014 .

[20]  T. Sun,et al.  Crustal formation in the Nanling Range, South China Block: Hf isotope evidence of zircons from Phanerozoic granitoids , 2013 .

[21]  Lei Xie,et al.  Tin-carrier minerals in metaluminous granites of the western Nanling Range (southern China): Constraints on processes of tin mineralization in oxidized granites , 2013 .

[22]  Guowei Zhang,et al.  Phanerozoic tectonics of the South China Block: Key observations and controversies , 2013 .

[23]  Mao Jingwen,et al.  Major types and time–space distribution of Mesozoic ore deposits in South China and their geodynamic settings , 2013, Mineralium Deposita.

[24]  Shu Liangshu,et al.  An analysis of principal features of tectonic evolution in South China Block , 2012 .

[25]  L. Xiaofeng.  Spatial and Temporal Distributions and the Geological Setting of the W-Sn-Mo-Nb-Ta Deposits at the Northeast Guangxi, Southe China , 2012 .

[26]  Chunzeng Wang,et al.  The emplacement mechanisms and growth styles of the Guposhan-Huashan batholith in western Nanling Range, South China , 2011 .

[27]  Koichiro Watanabe,et al.  Geochemical and mineralogical characteristics of ion-adsorption type REE mineralization in Phuket, Thailand , 2011, Mineralium Deposita.

[28]  Xian‐Hua Li,et al.  The early Jurassic mafic-ultramafic intrusion and A-type granite from northeastern Guangdong, SE China: Age, origin, and tectonic significance , 2010 .

[29]  K. Zhao,et al.  Hf isotopic composition of zircons from the Huashan-Guposhan intrusive complex and their mafic enclaves in northeastern Guangxi: Implication for petrogenesis , 2010 .

[30]  K. Zhao,et al.  Middle to late Jurassic felsic and mafic magmatism in southern Hunan province, southeast China: Implications for a continental arc to rifting , 2009 .

[31]  Wang Rui-rui.  Early Mesozoic geotectonic processes in South China , 2009 .

[32]  Shan Gao,et al.  In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard , 2008 .

[33]  Jiang Shao.  Characteristics and Genesis of Mesozoic A-Type Granites and Associated Mineral Deposits in the Southern Hunan and Northern Guangxi Provinces along the Shi-Hang Belt,South China , 2008 .

[34]  Weidong Sun,et al.  The golden transformation of the Cretaceous plate subduction in the West Pacific , 2007 .

[35]  Renmin Hua,et al.  Zircon LA-ICP-MS U-Pb dating and Sr-Nd isotope study of the Guposhan granite complex, Guangxi, China , 2007 .

[36]  B. Bonin.  A-type granites and related rocks: Evolution of a concept, problems and prospects , 2007 .

[37]  Xian‐Hua Li,et al.  Formation of the 1300-km-wide intracontinental orogen and postorogenic magmatic province in Mesozoic South China: A flat-slab subduction model , 2007 .

[38]  S. Ishihara,et al.  Fractionated Ilmenite‐series Granites in Southwest Japan: Source Magma for REE‐Sn‐W Mineralizations , 2006 .

[39]  D. Clague,et al.  50-Ma Initiation of Hawaiian-Emperor Bend Records Major Change in Pacific Plate Motion , 2006, Science.

[40]  K. Zhao,et al.  Petrogenesis of Late Jurassic Qianlishan granites and mafic dykes, Southeast China: implications for a back-arc extension setting , 2006, Geological Magazine.

[41]  Tao Sun,et al.  Petrogenesis of Mesozoic granitoids and volcanic rocks in south China : a response to tectonic evolution. , 2006 .

[42]  Zhu Jin-Chu.  The Huashan—Guposhan A-type Granitoid Belt in the Western Part of the Nanling Mountains:Petrology, Geochemistry and Genetic Interpretations , 2006 .

[43]  Z. Hui.  Magma mixing origin of the mafic enclaves in Lisong Granite,NE Guangxi,western Nanling Mountains , 2006 .

[44]  Gu Shengyan.  Study on Zircon LA-ICP-MS U-Pb Dating and Sr-Nd Isotope of the Guposhan Granite in Guangxi , 2006 .

[45]  M. B. Ohoud,et al.  Discrimination between primary magmatic biotites, reequilibrated biotites and neoformed biotites , 2005 .

[46]  Yue-heng Yang,et al.  Petrogenesis of the Neoproterozoic bimodal volcanic rocks along the western margin of the Yangtze Block: New constraints from Hf isotopes and Fe/Mn ratios , 2005 .

[47]  P. Jian,et al.  Alkaline syenites in eastern Cathaysia (South China): link to Permian-Triassic transtension , 2005 .

[48]  D. Henry,et al.  The Ti-saturation surface for low-to-medium pressure metapelitic biotites: Implications for geothermometry and Ti-substitution mechanisms , 2005 .

[49]  Zhu Jin.  Niumiao and Tong' an intrusive bodies of NE Guangxi: Petrology, zircon SHRIMP U-Pb geochronology and geochemistry. , 2005 .

[50]  Shi Shi-ding.  Geological characteristics and genesis of the Guposhan tin orefield in Guangxi , 2005 .

[51]  Xie Cai-fu.  Ascertainment of the Jinjiling aluminous A-type granite, Hunan Province and its tectonic settings , 2005 .

[52]  Hu Jian,et al.  Comparative Investigations of A-type Granites in the Coastal and the Nanling Inland Areas of SE China, and Their Tectonic Significances , 2005 .

[53]  D. Günther,et al.  Accurate U‐Pb Age and Trace Element Determinations of Zircon by Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry , 2004 .

[54]  Chien-Chih Chen,et al.  Jurassic intraplate magmatism in southern Hunan-eastern Guangxi: 40Ar/39Ar dating, geochemistry, Sr-Nd isotopes and implications for the tectonic evolution of SE China , 2004, Geological Society, London, Special Publications.

[55]  R. Korsch,et al.  TEMORA 1: a new zircon standard for Phanerozoic U–Pb geochronology , 2003 .

[56]  F. Guo,et al.  Geochemistry of early Mesozoic potassium-rich diorites-granodiorites in southeastern Hunan Province, South China: Petrogenesis and tectonic implications , 2003 .

[57]  C. Miller,et al.  Hot and cold granites? Implications of zircon saturation temperatures and preservation of inheritance , 2003 .

[58]  J. Clemens.  S-type granitic magmas—petrogenetic issues, models and evidence , 2003 .

[59]  K. Ludwig.  User's Manual for Isoplot 3.00 - A Geochronological Toolkit for Microsoft Excel , 2003 .

[60]  F. Zuo.  On the lithodemic units of Mesozoic granitoid in east Guangxi --a case from Guposhan-Huashan granitic pluton , 2002 .

[61]  Hubert Staudigel,et al.  Testing the fixed hotspot hypothesis using Ar-40/Ar-39 age progressions along seamount trails. , 2001 .

[62]  B. Chappell.  Aluminium saturation in I- and S-type granites and the characterization of fractionated haplogranites , 1999 .

[63]  S. Guggenheim,et al.  Nomenclature of the Micas , 1998, Mineralogical Magazine.

[64]  S. Jackson,et al.  A Compilation of New and Published Major and Trace Element Data for NIST SRM 610 and NIST SRM 612 Glass Reference Materials , 1997 .

[65]  P. King,et al.  Characterization and Origin of Aluminous A-type Granites from the Lachlan Fold Belt, Southeastern Australia , 1997 .

[66]  A. P. Douce,et al.  Titanium substitution in biotite: an empirical model with applications to thermometry, O2 and H2O barometries, and consequences for biotite stability , 1993 .

[67]  G. Eby.  Chemical subdivision of the A-type granitoids:Petrogenetic and tectonic implications , 1992 .

[68]  W. McDonough,et al.  Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes , 1989, Geological Society, London, Special Publications.

[69]  J. Whalen,et al.  A-type granites: geochemical characteristics, discrimination and petrogenesis , 1987 .

[70]  J. D. Cr-nlrnNs.  Origin of an A-type granite: Experimental constraints , 1986 .

[71]  A. Tindle,et al.  Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks , 1984 .

[72]  T. M. Harrison,et al.  Zircon saturation revisited: temperature and composition effects in a variety of crustal magma types , 1983 .

[73]  W. Collins,et al.  Nature and origin of A-type granites with particular reference to southeastern Australia , 1982 .

[74]  S. Uyeda,et al.  Plate Tectonics and the Japanese Islands: A Synthesis , 1974 .

[75]  B. Chappell,et al.  Two contrasting granite types , 1974 .