干旱区生态环境知识资源中心(Arid): Petrogenesis and tectonic implications of Tonian island arc volcanic rocks from the Gabgaba Terrane in the Arabian-Nubian Shield (NE Sudan)

Arid

DOI	10.1016/j.jseaes.2021.105006
	Petrogenesis and tectonic implications of Tonian island arc volcanic rocks from the Gabgaba Terrane in the Arabian-Nubian Shield (NE Sudan)
	Adam, Munir M. A.; Lv, Xinbiao; Fathy, Douaa; Rahman, Abdel Rahman A. Abdel; Ali, Asma A.; Mohammed, Adil S.; Farahat, Esam S.; Sami, Mabrouk
通讯作者	Adam, MMA ; Lv, XB ; Sami, M (corresponding author), Minia Univ, Fac Sci, Geol Dept, El Minia 61519, Egypt.
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2022
卷号	223
英文摘要	An integrated study of zircon U-Pb geochronology and geochemistry together with Lu-Hf isotopes, has been carried out on basaltic andesite and andesite from the Haweit area (Gabgaba Terrane, NE Sudan) to indicate their magmatic evolution. In-situ U-Pb zircon dating yielded a weighted mean age of 752 +/- 11 Ma for andesite and 773 +/- 17 Ma for basaltic andesite, suggesting they were generated during Tonian. The Haweit volcanic rocks are generally sub-alkaline and tholeiitic lavas. They are characterized by low Mg# (29-44), low TiO2 (0.70-1.41 wt %), and relatively high Al2O3 (14.60-18.30 wt%) indicating that they are not a primitive melt. The nearly flat REEs pattern of the basaltic andesites indicate that they were formed in an immature island arc setting. While andesites are slightly enriched in LREE and LILEs, suggesting more mature island arc setting. The calculated Hf-T-DM(C) (0.87-1.6 Ga) ages of zircons preclude the possibility of interaction of the parental magma with a pre-Neoproterozoic crustal source. The low (La/Yb)(N) (0.73-9.56) and high Zr/Nb (33-62) ratios, along with positive epsilon Hf(t) values (+1.33 to +12.5) indicate that the Haweit volcanic rocks were originated from depleted mantle with little crustal contamination. The geochemical data suggest that the parent magma of the Haweit volcanic rocks could be formed by low degree partial melting of spinel-bearing Iherzolite depleted mantle metasomatized by slab-derived fluids. The Haweit andesitic melts were later subjected to crustal assimilation before the final eruption of lavas during two stages of arc evolution.
英文关键词	Zircon U-Pb dating Lu-Hf isotope Tonian Subduction Gabgaba Terrane NE Sudan Andesitic rocks Island arc
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000722651300001
WOS关键词	HF ISOTOPIC COMPOSITIONS ; SOUTH EASTERN DESERT ; U-PB ZIRCON ; CHEMICAL CLASSIFICATION ; DEPLETED MANTLE ; TRACE-ELEMENTS ; LU-HF ; SM-ND ; EGYPT ; CRUST
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374417
作者单位	[Adam, Munir M. A.; Lv, Xinbiao] China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China; [Lv, Xinbiao] China Univ Geosci, Geol Survey, Wuhan 430074, Peoples R China; [Fathy, Douaa; Farahat, Esam S.; Sami, Mabrouk] Minia Univ, Fac Sci, Geol Dept, El Minia 61519, Egypt; [Rahman, Abdel Rahman A. Abdel; Mohammed, Adil S.] Univ Bahri, Coll Petr Geol & Minerals, Khartoum 11116, Sudan; [Ali, Asma A.] Alnawate Gold & Copper Min Co, Khartoum, Sudan; [Mohammed, Adil S.] China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Adam, Munir M. A.,Lv, Xinbiao,Fathy, Douaa,et al. Petrogenesis and tectonic implications of Tonian island arc volcanic rocks from the Gabgaba Terrane in the Arabian-Nubian Shield (NE Sudan)[J],2022,223.
APA	Adam, Munir M. A..,Lv, Xinbiao.,Fathy, Douaa.,Rahman, Abdel Rahman A. Abdel.,Ali, Asma A..,...&Sami, Mabrouk.(2022).Petrogenesis and tectonic implications of Tonian island arc volcanic rocks from the Gabgaba Terrane in the Arabian-Nubian Shield (NE Sudan).JOURNAL OF ASIAN EARTH SCIENCES,223.
MLA	Adam, Munir M. A.,et al."Petrogenesis and tectonic implications of Tonian island arc volcanic rocks from the Gabgaba Terrane in the Arabian-Nubian Shield (NE Sudan)".JOURNAL OF ASIAN EARTH SCIENCES 223(2022).