干旱区生态环境知识资源中心(Arid): Unravelling the Neoproterozoic accretionary history of Oman, using an array of isotopic systems in zircon

Arid

DOI	10.1144/jgs2018-125
	Unravelling the Neoproterozoic accretionary history of Oman, using an array of isotopic systems in zircon
	Blades, M. L.1; Alessio, B. L.1; Collins, A. S.1; Foden, J.1; Payne, J. L.2; Glorie, S.1; Holden, P.4; Thorpe, B.1; Al-Khirbash, S.3
通讯作者	Blades, M. L.
来源期刊	JOURNAL OF THE GEOLOGICAL SOCIETY
ISSN	0016-7649
EISSN	2041-479X
出版年	2020
卷号	177 期号:2 页码:357-378
英文摘要	The Omani basement is a critical window into the Neoproterozoic tectonic geography of the Mozambique Ocean and the amalgamation of Gondwana. It is located east of the juvenile arc terranes of the Arabian-Nubian Shield, yet the relationship between the two is not well understood. Magmatic and detrital zircon samples were analysed from four main basement terranes: Mirbat, the Huqf, Jebel Ja'alan and Al Jobah. The U-Pb (zircon) ages from igneous samples give ages between 838 and 765 Ma. The Lu-Hf and oxygen isotopes show that the zircons are juvenile (epsilon(Hf)(t) values 10.5-8.7), with low delta O-18 values (c. 2-6 parts per thousand). Detritus from sediments in Mirbat, the southernmost basement outcrop, preserves a main age peak at c. 786 Ma, with Lu-Hf between +6.05 and +12.64. Lu-Hf isotopic data for Proterozoic detrital zircons from Jebel Ja'alan suggest that this region was depositionally connected to a source yielding both evolved Tonian and Neoarchean to Paleoproterozoic detritus. These sources could correlate to the terranes in India and South China, which record similarly low delta O-18 values. These data support a model in which Oman formed in its own tectonic domain, accreting onto the Neoproterozoic active margin of a continent.
类型	Article
语种	英语
国家	Australia ; Oman
收录类别	SCI-E
WOS记录号	WOS:000537276100009
WOS关键词	U-PB ZIRCON ; ARABIAN-NUBIAN SHIELD ; HUQF SUPERGROUP ; CRUSTAL EVOLUTION ; EASTERN DESERT ; FIQ GLACIATION ; SINGLE ZIRCONS ; KHIDA TERRANE ; BILLION YEARS ; MIRBAT AREA
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/2XILL650/318855
作者单位	1.Univ Adelaide, Ctr Tecton Resources & Explorat TRaX, Dept Earth Sci, Adelaide, SA 5005, Australia; 2.Univ South Australia, Ctr Tecton Resources & Explorat TRaX, Sch Built & Nat Environm, Adelaide, SA 5001, Australia; 3.Sultan Qaboos Univ, Muscat, Oman; 4.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
推荐引用方式 GB/T 7714	Blades, M. L.,Alessio, B. L.,Collins, A. S.,et al. Unravelling the Neoproterozoic accretionary history of Oman, using an array of isotopic systems in zircon[J],2020,177(2):357-378.
APA	Blades, M. L..,Alessio, B. L..,Collins, A. S..,Foden, J..,Payne, J. L..,...&Al-Khirbash, S..(2020).Unravelling the Neoproterozoic accretionary history of Oman, using an array of isotopic systems in zircon.JOURNAL OF THE GEOLOGICAL SOCIETY,177(2),357-378.
MLA	Blades, M. L.,et al."Unravelling the Neoproterozoic accretionary history of Oman, using an array of isotopic systems in zircon".JOURNAL OF THE GEOLOGICAL SOCIETY 177.2(2020):357-378.