干旱区生态环境知识资源中心(Arid): Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt

Arid

DOI	10.1016/j.jafrearsci.2020.103807
	Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt
	Kiyokawa, Shoichi 1,2,3; Suzuki, Taishi 1; Horie, Kenji 4; Takehara, Mami 4; El-Dokouny, Hanna A.5; Dawoud, Maher 5; Abuelhasan, Mohamed M.5
通讯作者	Kiyokawa, Shoichi
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2020
卷号	165
英文摘要	The El-Dabbah Group is a > 7500 m-thick sequence of metavolcanic rocks, volcaniclastics, and banded ironformation located within the Nubian Shield, Central Eastern Desert, Egypt. The sequence preserves lower greenschist-facies island arc rocks. We used detailed mapping to reconstruct the stratigraphic and tectonic history of the El-Dabbah Group and the surrounding sedimentary basins. The El-Dabbah Group was identified as deposition at central rift zone of an oceanic island arc and was overlies by the subaerial sedimentary rocks (the Atshan Formation and the Hammamat Group). Four faulting were distinguished within the El-Dabbah area: (1) top-to-the-S low-angle thrusting; (2) NNE side down normal faulting; (3) sinistral displacement on north-south faults; and (4) WNE trend N-side-down normal faulting with the Hammamat Group. We obtained the crystallization ages of a granite (638.1 +/- 2.9 Ma) and a quartz porphyry (659.6 +/- 3.0 Ma). The detrital zircon age of the Hammamat Group show peaks at 650, 680, and 790 Ma. These evidences suggest, three sedimentation-deformation stages were identified in this area. Stage 1 involved sedimentation of island-arc-derived volcaniclastic rocks at 770-700 Ma and to thrust related accretion at 700-680 Ma. Stage 2 involved collisional and transtensional deformation related to formation of the subaerial basin that contains the Atshan Formation at 670-640 Ma, the normal fault, the strike-slip fault and granite intrusion during 660-620 Ma. Stage 3 involved orogenic collapse, regional strike-slip-related sedimentation and deformation of the Hammamat Group at 610-570 Ma. We show that the El-Dabbah Group records a history of oceanic island arc accretion, collision, and collapse within the northern East African Orogeny during 770-570 Ma in Neoproterozoic.
英文关键词	Neoproterozoic El-Dabbah group Hammamat group Oceanic island arc Volcaniclastic sequence Accretion Transtension
类型	Article
语种	英语
国家	Japan ; South Africa ; Egypt
收录类别	SCI-E
WOS记录号	WOS:000526109900009
WOS关键词	METAMORPHIC CORE COMPLEX ; ARABIAN-NUBIAN SHIELD ; BANDED IRON-FORMATION ; PAN-AFRICAN ; OBLIQUE CONVERGENCE ; CONTINENTAL LITHOSPHERE ; EVOLUTION ; BELT ; SYSTEM ; ORIGIN
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/2XILL650/314845
作者单位	1.Kyushu Univ, Dept Earth & Planetary Sci, 744 Motooka Nishiku, Fukuoka 8190395, Japan; 2.Univ Johannesburg, Dept Geol, POB 524, ZA-2006 Johannesburg, South Africa; 3.Kochi Univ, Ctr Adv Marine Core Res, Nanko Ku, B200 Monobe, Kochi 7838502, Japan; 4.Natl Inst Polar Res, 10-3 Midori Cho, Tachikawa, Tokyo 1908518, Japan; 5.Menoufiya Univ, Fac Sci, Dept Geol, Gamal Abd El Nasr St, Shibin Al Kawm, Menoufiya, Egypt
推荐引用方式 GB/T 7714	Kiyokawa, Shoichi,Suzuki, Taishi,Horie, Kenji,et al. Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt[J],2020,165.
APA	Kiyokawa, Shoichi.,Suzuki, Taishi.,Horie, Kenji.,Takehara, Mami.,El-Dokouny, Hanna A..,...&Abuelhasan, Mohamed M..(2020).Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,165.
MLA	Kiyokawa, Shoichi,et al."Tectonic and sedimentary history of the neoproterozoic metavolcanic-volcaniclastic rocks of the El-Dabbah Group, Central Eastern Desert, Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 165(2020).