Geochemical characteristics and tectonic implications of the Neoproterozoic A-type granites in Red Sea State, Sudan

ZHOU Zuo-min; LI Yong; LIU Xiao-yang; WU Xing-yuan

doi:10.19948/j.12-1471/P.2023.01.08

2023 Vol. 46, No. 1

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ZHOU Zuo-min, LI Yong, LIU Xiao-yang, WU Xing-yuan. 2023. Geochemical characteristics and tectonic implications of the Neoproterozoic A-type granites in Red Sea State, Sudan. North China Geology, 46(1): 71-79,86. doi: 10.19948/j.12-1471/P.2023.01.08

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ZHOU Zuo-min, LI Yong, LIU Xiao-yang, WU Xing-yuan. 2023. Geochemical characteristics and tectonic implications of the Neoproterozoic A-type granites in Red Sea State, Sudan. North China Geology, 46(1): 71-79,86. doi: 10.19948/j.12-1471/P.2023.01.08

Geochemical characteristics and tectonic implications of the Neoproterozoic A-type granites in Red Sea State, Sudan

1. Tianjin Center, China Geological Survey, Tianjin 300170, China;
2. Mining institute of Southern Africa, China Geological Survey, Tianjin 300170, China;
3. Wuhan Center, China Geological Survey, Wuhan 430205, China

Received Date: 16 December 2021

Abstract

Abstract

The Red Sea State of Sudan is located in the Nubian shield.A series of Neoproterozoic granites are identified in the Red Sea State, which consist of medium-coarse-and medium-fine-grained syenogranites and middle-fine-grained alkli feldspar granites.Zircon U-Pb dating implies the granites are intruded in 713 ±4 Ma, which are formed in Pan-African orogenic event.They show high SiO₂ contents (70.80%~77.83%).They are metaluminous or weak peraluminous with A/CNK ratios of 0.94~1.08 and A/NK ratios of 1.12~1.44.They show the similar Chondrite-normalized REE and multi-trace elements patterns.The REE patterns are rightinclined with REE medium differentiations of LREE/HREE ratios of 2.46~7.13 and display“V”shaped curve and medium to strong Eu anomaly with δEu values of 0.30~0.57.The granites are characterized by the enrichment of large ion lithophile elements (LILEs) such as Th, U, K and high field-strength elements (HFSEs)such as Zr, Hf and by the depleted Nb, Ta, Sr, P and Ti contents.They show low I_Sr ratios, depleted ε_Nd(t), ε_Hf(t)values and the similar T_DM1 and T_DM2 values.The granites chemically show A₂-type affinity.We propose that the 713 Ma A-type magmatism might be driven by upwelling of asthenosphere and subsequent partial melts of juvenile crust of Nubian shield on conditions of obvious Heating and decompression in a back-arc extensional setting.
- Red Sea State in Sudan /
- Nubian shield /
- Neoproterozoic /
- A-type granite /
- juvenile crust /
- back-arc extensional setting

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References

[1]	魏浩,徐九华,王建雄,等.非洲东北部阿拉伯-努比亚地盾(ANS)构造演化与金成矿作用[J].地质与勘探,2015,51(2):383-394. Google Scholar
[2]	ORIOLO S, OYHANTÇABAL P, WEMMER K, et al.Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle[J].Geoscience Frontiers,2017. Google Scholar
[3]	KENNEDY W Q.The structural differentiation of Africa in the Pan-African (±500 m.y.) tectonic episode[J].In: Leeds University Research Institute for African, 1964, 8:48-49. Google Scholar
[4]	KRÖNER.Late Precambrian plate tectonics and orogeny: a need to redefine the term Pan-African[J].In: Klerkx, J., Michot, J.(Eds.), African Geology.Royal, 1984:23-28. Google Scholar
[5]	STERN R J.Arc assebly and continental collision in the Neoproterozoic East African Orogen: Implications for the Consolidation of Gondwanaland[J].Annual Review of Earth and Planetary Sciences, 1994, 22:319-351. Google Scholar
[6]	ORIOLO S, OYHANT ÇABAL P, WEMMER K, et al.Contemporaneous assembly of Western Gondwana and final Rodinia break-up: Implications for the supercontinent cycle[J].Geoscience Frontiers, 2017. Google Scholar
[7]	EVUK D, FRANZ G, FREI D, et al.The Neoproterozoic evolution of the central-eastern Bayuda Desert (Sudan)[J].Precambrian Research, 2014, 240:108-125. Google Scholar
[8]	FROST B R, BARNES C G, COLLINS W J, et al.A Geochemical Classification for Granitic Rocks[J].Journal Of Petrology, 2001, 42:2033-2048. Google Scholar
[9]	SUN S S, MCDONOUGH W F.Chemical and isotopic systematics of oceanic basalts:implications for mantle composition and processes[J].Geological Society, London, Special Publications, 1989, 42(1):313-345. Google Scholar
[10]	WOLF M B, LONDON D.Apatite dissolution into peraluminous haplogranitic melts:An experimental study of solubilities and mechanisms[J].Geochimica Et Cosmochimica Acta, 1994, 58(19):4127-4145. Google Scholar
[11]	CHAPPELL B W.Aluminium saturation in I-and S-type granites and the characterization of fractionated haplogranites[J].Lithos, 1999, 46(3):535-551. Google Scholar
[12]	周佐民.碱质A 型花岗岩的判别、成因与构造环境[J].华南地质与矿产,2011,27(3):215-220. Google Scholar
[13]	BONIN B.A-type granites and related rocks:Evolution of a concept, problems and prospects[J].Lithos, 2007, 97(1-2):1-29. Google Scholar
[14]	EBY G N.Chemical subdivision of the A-type granitoids:Petrogenetic and tectonic implications[J].Geology.1992, 20:641-644. Google Scholar
[15]	WHALEN J B, CURRIE K L, CHAPPELL B W.A-type granites: geochemical characteristics, discrimination and petrogenesis[J].Contributions to Mineralogy and Petrology, 1987, 95(4):407-419. Google Scholar
[16]	COLLINS W J, BEAMS S D, WHITE A J R, et al.Nature and origin of A-type granites with particular reference to southeastern Australia[J].Contributions to Mineralogy and Petrology, 1982, 80(2):189-200. Google Scholar
[17]	CREASER R A, PRICE R C, WORMALD R J.A-type granites revisited: Assessment of a residual-source model[J].Geology, 1991, 19(2):163. Google Scholar
[18]	LOISELLE M C, WONES D R.Characteritics and origin of anorogenic granites[J].Geolosical society of American Bulletin(Abstracts with Programs), 1979, 11:468. Google Scholar
[19]	MINGRAM B, TRUMBULL R B, LITTMAN S, et al.A petrogenetic study of anorogenic felsic magmatism in the Cretaceous Paresis ring complex, Namibia:evidence for mixing of crust and mantle-derived components[J].Lithos, 2000, 54(1):1-22. Google Scholar
[20]	LITVINOVSKY B A, JAHN B, ZANVILEVICH A N, et al.Crystal fractionation in the petrogenesis of an alkali monzodiorite -syenite series: the Oshurkovo plutonic sheeted complex, Transbaikalia, Russia[J].2002, 64:97-130. Google Scholar
[21]	TURNER S P, FODEN J D, MORRISON R S.Derivation of some A2 type magmas by fractionation of basaltic magma:An example from the Pathaway Ridge, South Australia[J].Lithos, 1992, 28:151-179. Google Scholar
[22]	FROST C D, FROST B R, CHAMBERLAIN K R, et al.Petrogenesis of the 1.43 Ga Sherman batholith, SE Wyoming, USA: a reduced, rapakivi-type anorogenic granite[J].Journal of Petrology, 1999, 40(12):1771-1802. Google Scholar
[23]	赵振华,王中刚,邹天人,等.新疆乌伦古富碱侵入岩成因探讨[J].地球化学,1996,25(3):205-220. Google Scholar
[24]	ANDERSON L J, BENDER E E.Nature and origin of Proterozoic A-type granitic magmatism in the southwestern United States of America[J].Lithos, 1989, 23:19-52. Google Scholar
[25]	RÄMÖ O T, MCLEMORE V T, HAMILTON M A, et al.Intermittent 1630-1220 Ma magmatism in central Mazatzal province:New geochronologic piercing points and some tectonic implications[J].Geology, 2003, 31(4):335. Google Scholar
[26]	YANG J H, WU F Y, CHUNG S L, et al.A hybrid origin for the Qianshan A-type granite, northeast China: Geochemical and Sr-Nd-Hf isotopic evidence[J].Lithos, 2006, 89(1-2):89-106. Google Scholar
[27]	王德滋,周新民.中国东南部晚中生代花岗质火山-侵入杂岩成因与地壳演化[J].北京:科学出版社,2002:160-188. Google Scholar
[28]	SISSON T W, RATAJESKI K, HANKINS W B, et al.Voluminous granitic magmas from common basaltic sources[J].Contributions to Mineralogy and Petrology, 2005, 148(6):635-661. Google Scholar
[29]	LITVINOVSKY B A, JAHN B M, EYAL M.Mantle-derived sources of syenites from the A-type igneous suites -New approach to the provenance of alkaline silicic magmas[J].Lithos, 2015, 232:242-265. Google Scholar
[30]	任军平,王杰,古阿雷,等.赞比亚东北部正长花岗岩的锆石U-Pb 年龄和Lu-Hf 同位素特征[J].地质调查与研究,2019,42(3):161-165. Google Scholar
[31]	SUN K, ZHANG L L, ZHAO Z D, et al.Episodic crustal growth in the Tanzania Craton: evidence from Nd isotope compositions[J].China Geology, 2018, 1(2):210-224. Google Scholar
[32]	吴兴源,刘晓阳,任军平,等.坦桑尼亚Panda 山碳酸岩地球化学特征及岩石成因研究进展[J].地质调查与研究,2019,42(2):86-95. Google Scholar
[33]	ALI K A, MOGHAZI A M, MAURICE A E, et al.Composition, age, and origin of the-620 Ma Humr Akarim and Humrat Mukbid A-type granites: No evidence for pre-Neoproterozoic basement in the Eastern Desert, Egypt[J].International Journal of Earth Sciences, 2012, 101:1705-1722. Google Scholar
[34]	EBY G N.The A-type granitoids: A review of their occurrence and chemical characteristics and speculations on their petrogenesis[J].Lithos, 1990, 26(1-2):115-134. Google Scholar
[35]	吴锁平,王梅英,戚开静.A 型花岗岩研究现状及其述评[J].岩石矿物学杂志,2007,(1):57-66. Google Scholar
[36]	贾小辉,王强,唐功建.A 型花岗岩的研究进展及意义[J].大地构造与成矿学,2009,33(3):465-480. Google Scholar
[37]	李小伟,莫宣学,赵志丹,等.关于A 型花岗岩判别过程中若干问题的讨论[J].地质通报,2010,(Z1):278-285. Google Scholar
[38]	MILANI L, LEHMANN J, NAYDENOV K V, et al.A-type magmatism in a syn-collisional setting:The case of the Pan-African Hook Batholith in Central Zambia[J].Lithos, 2015, 216-217:48-72. Google Scholar
[39]	ABDELSALAM M G, STERN R J.Mapping Precambrian structures in the Sahara Desert with SIR-C/X-SAR radar:The Neoproterozoic Keraf Suture, NE Sudan[J].Journal of Geophysical Research: Planets, 1996, 101(E10): 23063-23076. Google Scholar
[40]	DOBRETSOV N L, BUSLOV M M, VERNIKOVSKY V A.Neoproterozoic to Early Ordovician Evolution of the Paleo-Asian Ocean: Implications to the Break-up of Rodinia[J].Gondwana Research, 2003, 6(2):143-159. Google Scholar
[41]	KHAIN E V, BIBIKOVA E V, SALNIKOVA E B, et al.The Palaeo-Asian ocean in the Neoproterozoic and early Palaeozoic: new geochronologic data and palaeotectonic reconstructions[J].Precambrian Research, 2003, 122(1):329-358. Google Scholar
[42]	赵凯,姚华舟,王建雄,等.厄立特里亚Koka 花岗岩锆石U-Pb年代学、地球化学特征及其地质意义[J].地球科学,2020,45(1):156-167. Google Scholar